Pin Voltage Tests

NOTE: Unless stated otherwise in testing procedures, perform all voltage tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance. Voltage readings may vary slightly due to battery condition or charging rate.

POWERTRAIN CONTROL MODULE (PCM) PIN VOLTAGE ASSIGNMENTS (S-TYPE V6)

Terminal No. (Wire Color)

Circuit

Active

Inactive

Connector FH1

1 (White/Red)

Accelerator Pedal Position Sensor No. 2 (APP2) Feedback

1.4 Volts At Idle ⁽¹⁾

.....

Not Used

.....

3 (Gray)

SCP Network

2-1600 Hz

.....

4 (Blue)

SCP Network

2-1600 Hz

.....

5 (Brown)

APP1 Reference Ground

Ground

6 (Brown/Blue)

EVAP Canister Close Valve Activate

Ground

Battery Voltage

7 (White)

Gear Selector State

Ground=P, R, N, 4

Battery Voltage=D, 3, 2

8 (White/Red)

Gear Selector State

Ground=P, R, D, 3

Battery Voltage=N, 4, 2

9 (Brown/Blue)

A/C Compressor Clutch Relay Activate

Ground

Battery Voltage

10 (Brown/Red)

APP3 Reference Ground

Ground

Not Used

.....

12 (Brown/Red)

EVAP Canister Purge Valve Activate

Ground (Pulse Width Modulated)

Battery Voltage

13 (Yellow/Green)

PCM Flash Programming

Encoded Communications

.....

Not Used

.....

15 (White)

APP1 Feedback

4.02 Volts At Idle ⁽²⁾

.....

16 (White/Blue)

APP3 Feedback

0.9 Volt At Idle ⁽¹⁾

.....

17 (Brown)

IAT, FTP, APP2 Sensors Common Reference Ground

Ground

Not Used

.....

Not Used

20 (Yellow)

APP2, FTP, A/C Pressure Sensors Common Reference Voltage

5 Volts

21 (White/Blue)

Gear Selector State

Ground=P, N, D, 2

Battery Voltage=R, 4, 3

Not Used

.....

23 (Yellow/Red)

APP1 Reference Voltage

5 Volts

24 (Black)

Ground Supply

Ground

25 (Black)

Ground Supply

Ground

26 (Black)

Ground Supply

Ground

27 (Black)

Ground Supply

Ground

28 (Orange/Yellow)

Brake Cancel Switch Input

Ground=Brake Off

Battery Voltage=Brake On

Not Used

.....

Not Used

.....

31 (White/Blue)

MAF Sensor Feedback

Zero Volts KOEO

1 Volt At Idle

32 (Green/Yellow)

Ignition Switched Power Supply

Battery Voltage

Ground

33 (Green/Orange)

Ignition Switched Power Supply

Battery Voltage

Ground

Not Used

.....

Not Used

.....

36 (Brown/Yellow)

Cooling Fan Activate Request

Ground

Battery Voltage

37 (White)

PSP Switch Input

Ground

Battery Voltage

38 (Brown/Blue)

MAF Sensor Reference Ground

Ground

Not Used

.....

40 (Orange)

Brake On/Off Signal

Ground=Brake Off

Battery Voltage=Brake On

41 (White/Green)

D-4 J Gate Switch

Ground=D

Battery Voltage=4

42 (White/Purple)

A/C Pressure Sensor Feedback

0-5 Volts ⁽³⁾

.....

43 (Brown/Yellow)

Ground Supply

Ground

44 (Orange/Yellow)

Battery Power Supply

Battery Voltage

Not Used

.....

Not Used

.....

47 (White/Blue)

Airbag Deployment Signal

Encoded Communications

.....

Not Used

.....

49 (Gray/Purple)

Serial Communications

Encoded Communications

.....

Not Used

.....

51 (White/Purple)

IAT Sensor Feedback

0.61 Volt At 194°F (90°C) ⁽⁴⁾

.....

52 (White/Purple)

FTP Sensor Feedback

4.9 Volts=Low Pressure

0.2 Volts=High Pressure

Not Used

.....

Not Used

.....

55 (Yellow/Blue)

APP3 Reference Voltage

5 Volts

56 (Black/Orange)

Cruise Control Switch Pack Reference Ground

Ground

57 (Yellow/Blue)

Cruise Control Switch Pack Mode Request

⁽⁵⁾

.....

58 (White/Purple)

Fuel Pump Control Signal

Pulse Width Modulated (PWM) ⁽⁶⁾

.....

Connector GB1

1 (Brown)

Shift Solenoid Valve No. 1 Control

Ground

Battery Voltage

2 (Brown/Red)

Shift Solenoid Valve No. 2 Control

Ground

Battery Voltage

3 (Brown/White)

Shift Solenoid Valve No. 3 Control

Ground

Battery Voltage

4 (Brown/Yellow)

Shift Solenoid Valve No. 4 Control

Ground

Battery Voltage

5 (Brown/White)

TCC Solenoid Valve Control Drive

Ground (Pulse Width Modulated)

Battery Voltage

Not Used

.....

7 (Brown/Green)

Pressure Regulator No. 1 Control Drive

Ground (Pulse Width Modulated) ⁽⁷⁾

.....

Not Used

.....

9 (White)

Transmission Range 3A

Ground

Battery Voltage

10 (White/Red)

Transmission Range 4

Ground

Battery Voltage

Not Used

.....

12 (Brown/White)

Pressure Regulator No. 2 Control Drive

Ground (Pulse Width Modulated) ⁽⁷⁾

.....

13 (Brown/Yellow)

Pressure Regulator No. 3 Control Drive

Ground (Pulse Width Modulated) ⁽⁷⁾

.....

Not Used

.....

15 (Brown/Blue)

Downstream HO2S Heater ("A" Bank)

Ground (Pulse Width Modulated)

.....

16 (Brown/Green)

Downstream HO2S Heater ("B" Bank)

Ground (Pulse Width Modulated)

.....

17 (Brown)

Sensor Signal Ground

Ground

18 (White/Blue)

Transmission Range 2

Ground

Battery Voltage

Not Used

.....

Not Used

.....

21 (White/Black)

Intermediate Speed Sensor Signal

107 Hz At 1000 RPM (Park)

.....

22 (White/Green)

Transmission Range 1

Ground

Battery Voltage

23 (White/Red)

Fluid Temperature Sensor Feedback

1.2 Volts At 194°F (90°C) ⁽⁴⁾

.....

Not Used

.....

Not Used

.....

26 (White/Red)

Output Speed Sensor Signal

140 Hz At 10 MPH; 280 Hz At 20 MPH

.....

27 (White/Purple)

Turbine Speed Sensor Signal

540 Hz At 10 MPH; 1080 Hz At 20 MPH

.....

28 (White/Blue)

Downstream HO2S Input ("A" Bank)

0.1-0.9 Volt At Idle (Switching)

.....

29 (White/Green)

Downstream HO2S Input ("B" Bank)

0.1-0.9 Volt At Idle (Switching)

.....

30 (White/Blue)

Pressure Switch Input

Ground

Battery Voltage

Not Used

.....

Not Used

.....

Connector PI1

Not Used

.....

2 (Brown/White)

Injector 1A Activate

Ground (Pulsed)

Battery Voltage

Not Used

.....

Not Used

.....

5 (Gray/Red)

Generator Warning

Battery Voltage (MIL Off)

Ground (MIL On)

Not Used

.....

7 (Brown)

Upstream HO2S Heater Control ("B" Bank)

Ground (Pulse Width Modulated)

Battery Voltage

8 (Brown/Red)

Upstream HO2S Heater Control ("A" Bank)

Ground (Pulse Width Modulated)

Battery Voltage

Not Used

.....

10 (White/Black)

VVT Control ("A" Bank)

Ground

Battery Voltage

11 (Brown/Green)

Injector 2B Activate

Ground (Pulsed)

Battery Voltage

12 (Brown/Green)

Ignition Coil 1B Activate

Ground

Battery Voltage

13 (Brown/Blue)

Ignition Coil 3A Activate

Ground

Battery Voltage

14 (Brown)

Injector 2A Activate

Ground (Pulsed)

Battery Voltage

15 (Brown)

TP Sensor Signal Ground

Ground

16 (Black/Green)

EGR Vacuum Regulator Activate

Ground (Pulse Width Modulated)

Battery Voltage

17 (Brown)

Sensor Signal Common Ground

Ground

18 (Gray)

Throttle Motor Control Signal

Ground (Pulse Width Modulated), 9.9% At Idle ⁽⁸⁾

.....

19 (Gray)

Throttle Motor Control Signal

Ground (Pulse Width Modulated), 9.9% At Idle ⁽⁸⁾

.....

20 (Yellow/Black)

IP, TP Sensors Common Reference Voltage

5 Volts

21 (Brown/Yellow)

Injector 3B Activate

Ground (Pulsed)

Battery Voltage

22 (Brown/Yellow)

Ignition Coil 2B Activate

Ground

Battery Voltage

23 (Brown/Red)

Ignition Coil 2A Activate

Ground

Battery Voltage

24 (Brown/Red)

Injector 3A Activate

Ground (Pulsed)

Battery Voltage

25 (White)

Actual Throttle Angle

0-20 Milliamps

.....

Not Used

.....

Not Used

.....

Not Used

.....

29 (Brown/Yellow)

IMT Bottom Valve Activate

Ground

Battery Voltage

30 (Brown/White)

Ignition Coil 3B Activate

Ground

Battery Voltage

31 (Brown)

Ignition Coil 1A Activate

Ground

Battery Voltage

32 (Brown/Blue)

Injector 2A Activate

Ground (Pulsed)

Battery Voltage

33 (White/Purple)

VVT Control ("B" Bank)

Ground

Battery Voltage

Not Used

.....

Not Used

.....

Not Used

.....

37 (Brown/Green)

IMT Top Valve Activate

Ground

Battery Voltage

Not Used

.....

39 (White/Green)

EOT Sensor Feedback

0.61 Volt At 194°F (90°C) ⁽⁴⁾

.....

40 (White/Purple)

CHT Sensor Feedback

0.61 Volt At 194°F (90°C) ⁽⁴⁾

.....

41 (White/Blue)

DPFE Sensor Feedback

1 Volt At Idle, 3.5 Volts At Full Load

.....

42 (Gray/Black)

Knock Sensor Ground ("A" Bank)

Ground

43 (Gray/Red)

Knock Sensor Ground ("B" Bank)

Ground

44 (White/Red)

Upstream HO2S Input ("A" Bank)

0.1-0.9 Volt At Idle (Switching)

.....

45 (White)

Upstream HO2S Input ("B" Bank)

0.1-0.9 Volt At Idle (Switching)

.....

Not Used

.....

47 (White/Blue)

EFT Sensor Feedback

0.61 Volt At 194°F (90°C) ⁽⁴⁾

.....

48 (Yellow)

TP Sensor Reference Voltage

Battery Voltage

49 (White/Green)

IP Sensor Feedback

2.6 Volts At 36 psi (248 kPa) ⁽³⁾

.....

50 (White/Red)

Generator Load Signal

Zero Volts (Pulse Width Modulated)

61% At Idle (Increases With Load)

51 (White/Black)

Knock Sensor Feedback ("A" Bank)

Zero KHz=No Knock; 2-20 KHz=Knock

.....

52 (White/Red)

Knock Sensor Feedback ("B" Bank)

Zero KHz=No Knock; 2-20 KHz=Knock

.....

53 (White/Purple)

CMP Sensor Signal ("A" Bank)

5 Hz At Idle

.....

54 (White/Black)

CMP Sensor Signal ("B" Bank)

5 Hz At Idle

.....

55 (Gray/Red)

CKP Sensor Feedback

5 Volts (45 Hz=1000 RPM; 90 Hz=2000 RPM)

.....

56 (White/Red)

CKP Sensor Ground

Ground

57 (White)

TP Sensor No. 1 Feedback

4.1 Volts At Idle ⁽²⁾

.....

58 (White)

TP Sensor No. 2 Feedback

0.8 Volt At Idle ⁽¹⁾

.....

59 (White/Red)

TP Sensor No. 3 Feedback

1.4 Volts At Idle ⁽¹⁾

.....

Not Used

.....

⁽¹⁾	Voltage increases with acceleration.

⁽²⁾	Voltage decreases with acceleration.

⁽³⁾	Voltage increases with pressure increase.

⁽⁴⁾	Voltage decreases with temperature increase.

⁽⁵⁾	Zero Volts=On; 1.4 Volts=Cancel; 2.4 Volts=Decrease; 3.2 Volts=Increase; 3.8 Volts=Resume; 4.5 Volts=On.

⁽⁶⁾	4.5 Volts (PWM @ 69%)=Idle; 8.6 Volts (PWM @ 25%)=KOEO.

⁽⁷⁾	Ground=Maximum Pressure; Battery Voltage=No Pressure.

⁽⁸⁾	Increases with throttle opening.

POWERTRAIN CONTROL MODULE (PCM) PIN VOLTAGE ASSIGNMENTS (S-TYPE V8)

Terminal No. (Wire Color)

Circuit

Active

Inactive

Connector FH1

1 (White/Red)

Accelerator Pedal Position Sensor No. 2 (APP2) Feedback

1.4 Volts At Idle ⁽¹⁾

.....

Not Used

.....

3 (Gray)

SCP Network

2-1600 Hz

.....

4 (Blue)

SCP Network

2-1600 Hz

.....

5 (Brown)

APP1 Reference Ground

Ground

6 (Brown/Blue)

EVAP Canister Close Valve Activate

Ground

Battery Voltage

7 (White)

Gear Selector State

Ground=P, R, N, 4

Battery Voltage=D, 3, 2

8 (White/Red)

Gear Selector State

Ground=P, R, D, 3

Battery Voltage=N, 4, 2

9 (Brown/Blue)

A/C Compressor Clutch Relay Activate

Ground

Battery Voltage

10 (Brown/Red)

APP3 Reference Ground

Ground

Not Used

.....

12 (Brown/Red)

EVAP Canister Purge Valve Activate

Ground (Pulse Width Modulated)

Battery Voltage

13 (Yellow/Green)

PCM Flash Programming

Encoded Communications

.....

Not Used

.....

15 (White)

APP1 Feedback

4.02 Volts At Idle ⁽²⁾

.....

16 (White/Blue)

APP3 Feedback

0.9 Volt At Idle ⁽¹⁾

.....

17 (Brown)

IAT, FTP, APP2 Sensors Common Reference Ground

Ground

Not Used

.....

Not Used

.....

20 (Yellow)

APP2, FTP, A/C Pressure Sensors Common Reference Voltage

5 Volts

21 (White/Blue)

Gear Selector State

Ground=P, N, D, 2

Battery Voltage=R, 4, 3

Not Used

.....

23 (Yellow/Red)

APP1 Reference Voltage

5 Volts

24 (Black)

Ground Supply

Ground

25 (Black)

Ground Supply

Ground

26 (Black)

Ground Supply

Ground

27 (Black)

Ground Supply

Ground

28 (Orange/Yellow)

Brake Cancel Switch Input

Ground=Brake Off

Battery Voltage=Brake On

Not Used

.....

Not Used

.....

31 (White/Blue)

MAF Sensor Feedback

Zero Volts KOEO

1 Volt At Idle

32 (Green/Yellow)

Ignition Switched Power Supply

Battery Voltage

Ground

33 (Green/Orange)

Ignition Switched Power Supply

Battery Voltage

Ground

Not Used

.....

Not Used

.....

36 (Brown/Yellow)

Cooling Fan Activate Request

Ground

Battery Voltage

37 (White)

PSP Switch Input

Ground

Battery Voltage

38 (Brown/Blue)

MAF Sensor Reference Ground

Ground

Not Used

.....

40 (Orange)

Brake On/Off Signal

Ground=Brake Off

Battery Voltage=Brake On

41 (White/Green)

D-4 J Gate Switch

Ground=D

Battery Voltage=4

42 (White/Purple)

A/C Pressure Sensor Feedback

0-5 Volts ⁽³⁾

.....

43 (Brown/Yellow)

Ground Supply

Ground

44 (Orange/Yellow)

Battery Power Supply

Battery Voltage

Not Used

.....

Not Used

.....

47 (White/Blue)

Airbag Deployment Signal

Encoded Communications

.....

48 (White/Purple)

Coolant Level Sensor

Ground

Battery Voltage

49 (Gray/Purple)

Serial Communications

Encoded Communications

.....

Not Used

.....

51 (White/Purple)

IAT Sensor Feedback

0.61 Volt At 194°F (90°C) ⁽⁴⁾

.....

52 (White/Purple)

FTP Sensor Feedback

4.9 Volts=Low Pressure

0.2 Volts=High Pressure

Not Used

.....

Not Used

.....

55 (Yellow/Blue)

APP3 Reference Voltage

5 Volts

56 (Black/Orange)

Cruise Control Switch Pack Reference Ground

Ground

57 (Yellow/Blue)

Cruise Control Switch Pack Mode Request

⁽⁵⁾

.....

58 (White/Purple)

Fuel Pump Control Signal

Pulse Width Modulated (PWM) ⁽⁶⁾

.....
.....

Connector GB1

1 (Brown)

Shift Solenoid Valve No. 1 Control

Ground

Battery Voltage

2 (Brown/Red)

Shift Solenoid Valve No. 2 Control

Ground

Battery Voltage

3 (Brown/White)

Shift Solenoid Valve No. 3 Control

Ground

Battery Voltage

4 (Brown/Yellow)

Shift Solenoid Valve No. 4 Control

Ground

Battery Voltage

5 (Brown/White)

TCC Solenoid Valve Control Drive

Ground (Pulse Width Modulated)

Battery Voltage

Not Used

.....

7 (Brown/Green)

Pressure Regulator No. 1 Control Drive

Ground (Pulse Width Modulated) ⁽⁷⁾

.....

Not Used

.....

9 (White)

Transmission Range 3A

Ground

Battery Voltage

10 (White/Red)

Transmission Range 4

Ground

Battery Voltage

Not Used

.....

12 (Brown/White)

Pressure Regulator No. 2 Control Drive

Ground (Pulse Width Modulated) ⁽⁷⁾

.....

13 (Brown/Yellow)

Pressure Regulator No. 3 Control Drive

Ground (Pulse Width Modulated) ⁽⁷⁾

.....

Not Used

.....

15 (Brown/Blue)

Downstream HO2S Heater ("A" Bank)

Ground (Pulse Width Modulated)

.....

16 (Brown/Green)

Downstream HO2S Heater ("B" Bank)

Ground (Pulse Width Modulated)

.....

17 (Brown)

Sensor Signal Ground

Ground

18 (White/Blue)

Transmission Range 2

Ground

Battery Voltage

Not Used

.....

Not Used

.....

21 (White/Black)

Intermediate Speed Sensor Signal

107 Hz At 1000 RPM (Park)

.....

22 (White/Green)

Transmission Range 1

Ground

Battery Voltage

23 (White/Red)

Fluid Temperature Sensor Feedback

1.2 Volts At 194°F (90°C) ⁽⁴⁾

.....

Not Used

.....

Not Used

.....

26 (White/Red)

Output Speed Sensor Signal

140 Hz At 10 MPH; 280 Hz At 20 MPH

.....

27 (White/Purple)

Turbine Speed Sensor Signal

540 Hz At 10 MPH; 1080 Hz At 20 MPH

.....

28 (White/Blue)

Downstream HO2S Input ("A" Bank)

0.1-0.9 Volt At Idle (Switching)

.....

29 (White/Green)

Downstream HO2S Input ("B" Bank)

0.1-0.9 Volt At Idle (Switching)

.....

30 (White/Blue)

Pressure Switch Input

Ground

Battery Voltage

Not Used

.....

Not Used

.....

Connector PI1

1 (Brown/Red)

Ignition Coil 2A Activate

Ground

Battery Voltage

2 (Brown/White)

Injector 1A Activate

Ground (Pulsed)

Battery Voltage

Not Used

.....

Not Used

.....

5 (Gray/Red)

Generator Warning

Battery Voltage (MIL Off)

Ground (MIL On)

Not Used

.....

7 (Brown)

Upstream HO2S Heater Control ("B" Bank)

Ground (Pulse Width Modulated)

Battery Voltage

8 (Brown/Red)

Upstream HO2S Heater Control ("A" Bank)

Ground (Pulse Width Modulated)

Battery Voltage

9 (Brown)

Air-Assisted Injection Control

Ground (Pulse Width Modulated)

Battery Voltage

10 (White/Black)

VVT Control ("A" Bank)

Ground

Battery Voltage

11 (Brown/Green)

Injector 1B Activate

Ground (Pulsed)

Battery Voltage

12 (Brown/White)

Ignition Coil 2B Activate

Ground

Battery Voltage

13 (Brown/Green)

Ignition Coil 4A Activate

Ground

Battery Voltage

14 (Brown)

Injector 2A Activate

Ground (Pulsed)

Battery Voltage

15 (Brown)

TP Sensor Signal Ground

Ground

Not Used

.....

17 (Brown)

Sensor Signal Common Ground

Ground

18 (Gray)

Throttle Motor Control Signal

Ground (Pulse Width Modulated), 9.9% At Idle ⁽⁸⁾

.....

19 (Gray)

Throttle Motor Control Signal

Ground (Pulse Width Modulated), 9.9% At Idle ⁽⁸⁾

.....

20 (Yellow/Black)

IP, TP Sensors Common Reference Voltage

5 Volts

21 (Brown/Yellow)

Injector 2B Activate

Ground (Pulsed)

Battery Voltage

22 (Brown/Blue)

Ignition Coil 3A Activate

Ground

Battery Voltage

23 (Brown/Yellow)

Ignition Coil 1B Activate

Ground

Battery Voltage

24 (Brown/Red)

Injector 3A Activate

Ground (Pulsed)

Battery Voltage

25 (White)

Actual Throttle Angle

0-20 Milliamps

.....

Not Used

.....

Not Used

.....

Not Used

.....

29 (Brown/White)

Injector 3B Activate

Ground (Pulsed)

Battery Voltage

30 (Brown)

Ignition Coil 3B Activate

Ground

Battery Voltage

31 (Brown)

Ignition Coil 1A Activate

Ground

Battery Voltage

32 (Brown/Blue)

Injector 4A Activate

Ground (Pulsed)

Battery Voltage

33 (White/Purple)

VVT Control ("B" Bank)

Ground

Battery Voltage

Not Used

.....

Not Used

.....

Not Used

.....

37 (Brown)

Injector 4B Activate

Ground (Pulsed)

Battery Voltage

38 (Brown/Red)

Ignition Coil 4B Activate

Ground

Battery Voltage

39 (White/Green)

EOT Sensor Feedback

0.61 Volt At 194°F (90°C) ⁽⁴⁾

.....

Not Used

.....

Not Used

.....

42 (Gray/Black)

Knock Sensor Ground ("A" Bank)

Ground

43 (Gray/Red)

Knock Sensor Ground ("B" Bank)

Ground

44 (White/Red)

Upstream HO2S Input ("A" Bank)

0.1-0.9 Volt At Idle (Switching)

.....

45 (White)

Upstream HO2S Input ("B" Bank)

0.1-0.9 Volt At Idle (Switching)

.....

46 (White)

ECT Sensor Feedback

0.61 Volt At 194°F (90°C) ⁽⁴⁾

.....

47 (White/Blue)

EFT Sensor Feedback

0.61 Volt At 194°F (90°C) ⁽⁴⁾

.....

48 (Yellow)

TP Sensor Reference Voltage

Battery Voltage

49 (White/Green)

IP Sensor Feedback

2.6 Volts At 36 psi (248 kPa) ⁽³⁾

.....

50 (White/Red)

Generator Load Signal

Zero Volts (Pulse Width Modulated)

61% At Idle (Increases With Load)

51 (White/Black)

Knock Sensor Feedback ("A" Bank)

Zero KHz=No Knock; 2-20 KHz=Knock

.....

52 (White/Red)

Knock Sensor Feedback ("B" Bank)

Zero KHz=No Knock; 2-20 KHz=Knock

.....

53 (White/Black)

CMP Sensor Signal ("A" Bank)

5 Hz At Idle

.....

54 (White/Purple)

CMP Sensor Signal ("B" Bank)

5 Hz At Idle

.....

55 (Gray/Red)

CKP Sensor Feedback

5 Volts (45 Hz=1000 RPM; 90 Hz=2000 RPM)

.....

56 (White/Red)

CKP Sensor Ground

Ground

57 (White)

TP Sensor No. 1 Feedback

4.1 Volts At Idle ⁽²⁾

.....

58 (White)

TP Sensor No. 2 Feedback

0.8 Volt At Idle ⁽¹⁾

.....

59 (White/Red)

TP Sensor No. 3 Feedback

1.4 Volts At Idle ⁽¹⁾

.....

Not Used

.....

⁽¹⁾	Voltage increases with acceleration.

⁽²⁾	Voltage decreases with acceleration.

⁽³⁾	Voltage increases with pressure increase.

⁽⁴⁾	Voltage decreases with temperature increase.

⁽⁵⁾	Zero Volts=On; 1.4 Volts=Cancel; 2.4 Volts=Decrease; 3.2 Volts=Increase; 3.8 Volts=Resume; 4.5 Volts=On.

⁽⁶⁾	4.5 Volts (PWM @ 69%)=Idle; 8.6 Volts (PWM @ 25%)=KOEO.

⁽⁷⁾	Ground=Maximum Pressure; Battery Voltage=No Pressure.

⁽⁸⁾	Increases with throttle opening.

ENGINE CONTROL MODULE (ECM) PIN VOLTAGE ASSIGNMENTS (1998-99 XJR)

Terminal No. (Wire Color)

Circuit

Active

Inactive

Connector EM10

1 (White/Red)

Ignition Switched Power Supply

Battery Voltage

Zero Volts

2 (Blue/Green)

A/C Control Module Load Inhibit

Ground

Battery Voltage

3 (Blue/Light Green)

A/C Control Module Electrical Load Signal

Battery Voltage

Ground

4 (Blue/Brown)

A/C Control Module Compressor Clutch Request

Battery Voltage

Ground

5 (White/Pink)

Ignition Switched Power Supply

Battery Voltage

6 (Orange)

OK To Start

Encoded Communications

.....

Not Used

.....

Not Used

.....

9 (Brown/Orange)

Battery Power Supply

Battery Voltage

10 (Blue/Gray)

Brake Switch

Ground

Battery Voltage

11 (Purple/Green)

Cruise Control Brake Cancel Request

Ground (Applied)

Battery Voltage

12 (Pink)

Serial Communications

.....

13 (Orange)

Serial Communications

.....

14 (Orange/Blue)

Parking Brake Switch

Ground (Applied)

Battery Voltage

15 (Red/Gray)

Park/Neutral Confirmation

Battery Voltage=P, N

Ground=R, D, 4, 3, 2

16 (Purple/Pink)

EMS Control Relay Activate

Ground

Battery Voltage

17 (Yellow)

Security Acknowledge

Encoded Communications

.....

Not Used

.....

Not Used

.....

20 (Black/Green)

IAT, ECT, TP, Mechanical Guard Position, Pedal Position Sensors Common Reference Ground

Ground

21 (Blue/White)

Mechanical Guard Position, Pedal Position, TP Sensors Common Reference Voltage

5 Volts

22 (Black)

Ground

23 (Black/Pink)

Ground

Not Used

.....

25 (Green)

CAN Network

15-1500 Hz

.....

26 (Yellow)

CAN Network

15-1500 Hz

.....

27 (Green)

CAN Network

15-1500 Hz

.....

28 (Yellow)

CAN Network

15-1500 Hz

.....

Connector EM11

1 (Gray/Red)

Cruise Control Set +/-

7.3 Volts="+"; 8.8 Volts="-"

Battery Voltage

Not Used

.....

3 (Purple)

ECM Programming

Battery Voltage

4 (White/Blue)

Cruise Control On Request

Battery Voltage

Ground

5 (Gray/Green)

Cruise Control Cancel/Resume

7.3 Volts=Resume; 8.8 Volts=Cancel

.....

6 (Green/Orange)

Engine Crank

Ground (Cranking)

Battery Voltage

7 (Red/Green)

FTP Sensor Feedback

4.9 Volts=Low Pressure

0.2 Volts=High Pressure

8 (Blue/White)

Mechanical Guard, Pedal Position, TP, FTP Sensors Common Reference Voltage

5 Volts

9 (Blue/Yellow)

ECT Feedback

0.41 Volt At 194°F (90°C) ⁽¹⁾

.....

10 (Green)

TPS Feedback

0.5 Volt=Idle; 4.75 Volts=WOT

.....

11 (Blue)

TPS Feedback

0.5 Volt=Idle; 4.75 Volts=WOT

.....

12 (Black/Green)

IAT, ECT, TP, Mechanical Guard Position, Pedal Position, FTP Sensors Common Reference Ground

Ground

13 (Black/Yellow)

Mechanical Guard Position Feedback

0.5 Volt=Idle; 4.75 Volts=WOT

.....

14 (Black/Green)

Mechanical Guard Position, Pedal Position, TP Sensors Shield

Ground

15 (Red)

Pedal Position Feedback

0.5 Volt=Idle; 4.75 Volts=WOT

.....

16 (Pink)

Pedal Position Feedback

0.5 Volt=Idle; 4.75 Volts=WOT

.....

Connector EM12

1 (Yellow/Blue)

EGR Valve Winding S1 Supply

Ground

Battery Voltage

2 (Yellow/Green)

EGR Valve Winding S2 Supply

Ground

Battery Voltage

3 (Yellow/Brown)

EGR Valve Winding S3 Supply

Ground

Battery Voltage

4 (Yellow/Red)

EGR Valve Winding S4 Supply

Ground

Battery Voltage

5 (White/Blue)

Refrigerant 4-Way Pressure Switch

Ground At 290 psi (2000 kPa)

.....

6 (Red/White)

Refrigerant 4-Way Pressure Switch

Ground At 174 psi (1200 kPa)

.....

7 (Blue/Purple)

IATS 2 Feedback

2.38 Volts At 68°F (20°C) ⁽¹⁾

.....

8 (Gray/Light Green)

Ignition Module No. 2 Switching Feedback

23 Hz At Idle (5 Volts)

.....

9 (Gray/Green)

Ignition Module No. 1 Switching Feedback

23 Hz At Idle (5 Volts)

.....

10 (Red/Yellow)

A/C Compressor Relay Activate

Ground

Battery Voltage

Not Used

.....

12 (Blue/Purple)

IATS Feedback

0.98 Volt At 50°F (10°C) ⁽¹⁾

.....

13 (Green/Yellow)

MAFS Feedback

1.2 Volts At Idle ⁽²⁾

.....

14 (Green)

Upstream HO2S Input ("B" Bank)

0.1-0.9 Volt At Idle (Switching)

.....

15 (Red)

Upstream HO2S Input ("A" Bank)

0.1-0.9 Volt At Idle (Switching)

.....

16 (Brown)

Downstream O2S Input ("B" Bank)

0.1-0.9 Volt At Idle (Switching)

.....

17 (Blue)

Downstream O2S Input ("A" Bank)

0.1-0.9 Volt At Idle (Switching)

.....

18 (Black/Yellow)

MAFS Reference Ground

Ground

.....

19 (Black/Yellow)

MAFS Reference Ground

Ground

.....

Not Used

.....

Not Used

.....

22 (Black/Purple)

HO2S, O2S Common Shield

Ground

.....

Connector EM13

1 (Pink/Brown)

Fuel Pump Relay Activate

Ground

Battery Voltage

2 (White)

ECM Programming

.....

3 (Gray/Purple)

Cruise Control On LED

Ground

Battery Voltage

4 (Orange/Pink)

Canister Close Valve Activate

Ground

Battery Voltage

Not Used

.....

Not Used

.....

Not Used

.....

Not Used

.....

9 (Pink/Black)

Fuel Pump Relay Activate

Ground

Battery Voltage

10 (Red/Yellow)

Intercooler Pump Relay Activate

Ground

Battery Voltage

11 (Purple/White)

Vacuum Switching Valve No. 3 Activate

Ground

Battery Voltage

12 (Red/White)

Vacuum Switching Valve No. 1 Activate

Ground

Battery Voltage

13 (Purple/Yellow)

Vacuum Switching Valve No. 2 Activate

Ground

Battery Voltage

14 (Green/Red)

Throttle Motor Power Relay Activate

Ground

Battery Voltage

15 (White)

Series Low Speed Fan Activate

Ground

Battery Voltage

16 (White/Blue)

Parallel High Speed Fan Activate

Ground

Battery Voltage

17 (Brown)

Knock Sensor Feedback ("B" Bank)

Zero KHz=No Knock; 2-20 KHz=Knock

.....

18 (Gray)

Knock Sensor Feedback ("A" Bank)

Zero KHz=No Knock; 2-20 KHz=Knock

.....

19 (Yellow)

CKPS Signal

5 Volts (45 Hz=1000 RPM; 90 Hz=2000 RPM)

.....

20 (Black)

CMPS Signal

5 Hz At Idle

.....

Not Used

.....

22 (Blue/Black)

Ignition Coil Relay Activate

Ground

Battery Voltage

23 (Light Green/Pink)

Ignition Module No. 1 Switching (Coil 4A)

5 Hz At Idle

.....

24 (Light Green/Orange)

Ignition Module No. 2 Switching (Coil 3A)

5 Hz At Idle

.....

25 (Light Green/White)

Ignition Module No. 2 Switching (Coil 2A)

5 Hz At Idle

.....

26 (Light Green/Blue)

Ignition Module No. 1 Switching (Coil 1A)

5 Hz At Idle

.....

27 (Black/Green)

CKPS, CMPS, Knock Sensors Common Shield

Ground

28 (Purple)

CKPS Signal

5 Volts (45 Hz=1000 RPM; 90 Hz=2000 RPM)

.....

29 (Orange)

CMPS Signal Ground

Ground

Not Used

.....

31 (Light Green/Yellow)

Ignition Module No. 2 Switching (Coil 4B)

5 Hz At Idle

.....

32 (Light Green/Red)

Ignition Module No. 1 Switching (Coil 3B)

5 Hz At Idle

.....

33 (Light Green/Gray)

Ignition Module No. 1 Switching (Coil 2B)

5 Hz At Idle

.....

34 (Light Green/Purple)

Ignition Module No. 2 Switching (Coil 1B)

5 Hz At Idle

.....

Connector EM14

1 (Green/Yellow)

Throttle Motor Power Supply

Battery Voltage

Ground

2 (Green/Yellow)

Throttle Motor Power Supply

Battery Voltage

Ground

3 (White/Red)

Ignition Switched Power Supply

Battery Voltage

Ground

4 (Black/Pink)

Ground

5 (Red)

Throttle Motor Power Supply

Battery Voltage

Ground

6 (Red)

Throttle Motor Power Supply

Battery Voltage

Ground

7 (Black)

Ground

8 (Black)

Ground

9 (Black)

Ground

10 (Black)

Ground

11 (Green)

Throttle Motor Power Supply

Ground

12 (Green)

Throttle Motor Power Supply

Battery Voltage

Ground

Connector EM15

1 (Purple/Gray)

Upstream HO2S Heater Ground ("B" Bank)

Ground

2 (Purple/Blue)

Upstream HO2S Heater Ground ("A" Bank)

Ground

3 (Purple/Brown)

EVAP Valve Activate

Ground (Valve Open)

Battery Voltage

4 (Black/Orange)

Injector 3B Activate

Ground

Battery Voltage

5 Black/Yellow)

Injector 2B Activate

Ground

Battery Voltage

6 (Black/White)

Injector 4A Activate

Ground

Battery Voltage

7 (Black/Blue)

Injector 1A Activate

Ground

Battery Voltage

Not Used

.....

Not Used

.....

Not Used

.....

11 (Black)

Ground

12 (Black)

Ground

Not Used

.....

Not Used

.....

15 (Black/Purple)

Injector 4B Activate

Ground

Battery Voltage

16 (Black/Green)

Injector 3A Activate

Ground

Battery Voltage

17 (Black/Brown)

Injector 2A Activate

Ground

Battery Voltage

18 (Black/Gray)

Injector 1B Activate

Ground

Battery Voltage

Not Used

.....

Not Used

.....

Not Used

.....

22 (Black

Ground

⁽¹⁾	Voltage decreases as temperature increases.

⁽²⁾	Voltage increases as engine RPM increases.

ENGINE CONTROL MODULE (ECM) PIN VOLTAGE ASSIGNMENTS (1998 XK8)

Terminal No. (Wire Color)

Circuit

Active

Inactive

Connector EM10

1 (White/Red)

Ignition Switched Power Supply

Battery Voltage

Zero Volts

2 (Blue/Green)

A/C Control Module Load Inhibit

Ground

Battery Voltage

3 (Blue/Light Green)

A/C Control Module Electrical Load Signal

Battery Voltage

Ground

4 (Blue/Brown)

A/C Control Module Compressor Clutch Request

Battery Voltage

Ground

5 (White/Pink)

Ignition Switched Power Supply

Battery Voltage

6 (Orange)

OK To Start

Encoded Communications

.....

Not Used

.....

Not Used

.....

9 (Brown/Orange)

Battery Power Supply

Battery Voltage

10 (Blue/Gray)

Brake Switch

Ground

Battery Voltage

11 (Purple/Green)

Cruise Control Brake Cancel Request

Ground (Applied)

Battery Voltage

12 (Pink)

Serial Communications

.....

13 (Orange)

Serial Communications

.....

14 (Orange/Blue)

Parking Brake Switch

Ground (Applied)

Battery Voltage

15 (Green)

Park/Neutral Confirmation

Battery Voltage=P, N

Ground=R, D, 4, 3, 2

16 (Purple/Pink)

EMS Control Relay Activate

Ground

Battery Voltage

17 (Yellow)

Security Acknowledge

Encoded Communications

.....

Not Used

.....

Not Used

20 (Black/Green)

IAT, ECT, TP, Mechanical Guard Position, Pedal Position Sensors Common Reference Ground

Ground

21 (Blue/White)

Mechanical Guard Position, Pedal Position, TP Sensors Common Reference Voltage

5 Volts

22 (Black)

Ground

23 (Black/Pink)

Ground

Not Used

.....

25 (Green)

CAN Network

15-1500 Hz

.....

26 (Yellow)

CAN Network

15-1500 Hz

.....

27 (Green)

CAN Network

15-1500 Hz

.....

28 (Yellow)

CAN Network

15-1500 Hz

.....

Connector EM11

1 (Gray/Red)

Cruise Control Set +/-

7.3 Volts="+"; 8.8 Volts="-"

Battery Voltage

Not Used

.....

3 (Purple)

ECM Programming

Battery Voltage

4 (White/Blue)

Cruise Control On Request

Battery Voltage

Ground

5 (Gray/Green)

Cruise Control Cancel/Resume

7.3 Volts=Resume; 8.8 Volts=Cancel

.....

6 (Green/Orange)

Engine Crank

Ground (Cranking)

Battery Voltage

7 (Red/Green)

FTP Sensor Feedback

4.9 Volts=Low Pressure

0.2 Volts=High Pressure

8 (Blue/White)

Mechanical Guard, Pedal Position, TP, FTP Sensors Common Reference Voltage

5 Volts

9 (Blue/Yellow)

ECT Feedback

0.41 Volt At 194°F (90°C) ⁽¹⁾

.....

10 (Green)

TPS Feedback

0.5 Volt=Idle; 4.75 Volts=WOT

.....

11 (Blue)

TPS Feedback

0.5 Volt=Idle; 4.75 Volts=WOT

.....

12 (Black/Green)

IAT, ECT, TP, Mechanical Guard Position, Pedal Position, FTP Sensors Common Reference Ground

Ground

13 (Black/Yellow)

Mechanical Guard Position Feedback

0.5 Volt=Idle; 4.75 Volts=WOT

.....

14 (Black/Green)

Mechanical Guard Position, Pedal Position, TP Sensors Shield

Ground

15 (Red)

Pedal Position Feedback

0.5 Volt=Idle; 4.75 Volts=WOT

.....

16 (Pink)

Pedal Position Feedback

0.5 Volt=Idle; 4.75 Volts=WOT

.....

Connector EM12

Not Used

.....

Not Used

.....

Not Used

.....

Not Used

.....

5 (White/Blue)

Refrigerant 4-Way Pressure Switch

Ground At 290 psi (2000 kPa)

.....

6 (Yellow/White)

Refrigerant 4-Way Pressure Switch

Ground At 174 psi (1200 kPa)

.....

Not Used

.....

8 (Gray/Light Green)

Ignition Module No. 2 Switching Feedback

23 Hz At Idle (5 Volts)

.....

9 (Gray/Green)

Ignition Module No. 1 Switching Feedback

23 Hz At Idle (5 Volts)

.....

10 (Red/Yellow)

A/C Compressor Relay Activate

Ground

Battery Voltage

Not Used

.....

12 (Blue/Purple)

IATS Feedback

0.98 Volt At 50°F (10°C) ⁽¹⁾

.....

13 (Green/Yellow)

MAFS Feedback

1.2 Volts At Idle ⁽²⁾

.....

14 (Green)

Upstream HO2S Input ("B" Bank)

0.1-0.9 Volt At Idle (Switching)

.....

15 (Red)

Upstream HO2S Input ("A" Bank)

0.1-0.9 Volt At Idle (Switching)

.....

16 (Brown)

Downstream O2S Input ("B" Bank)

0.1-0.9 Volt At Idle (Switching)

.....

17 (Blue)

Downstream O2S Input ("A" Bank)

0.1-0.9 Volt At Idle (Switching)

.....

18 (Black/Yellow)

MAFS Reference Ground

Ground

.....

19 (Black/Yellow)

MAFS Reference Ground

Ground

.....

Not Used

.....

Not Used

.....

22 (Black/Purple)

HO2S, O2S Common Shield

Ground

.....

Connector EM13

1 (Pink/Brown)

Fuel Pump Relay Activate

Ground

Battery Voltage

2 (White)

ECM Programming

.....

.....
.....

3 (Gray/Purple)

Cruise Control On LED

Ground

Battery Voltage

4 (Orange/Pink)

Canister Close Valve Activate

Ground

Battery Voltage

Not Used

.....

Not Used

.....

Not Used

.....

Not Used

.....

Not Used

.....

Not Used

.....

11 (Purple/White)

Vacuum Switching Valve No. 3 Activate

Ground

Battery Voltage

12 (Red/White)

Vacuum Switching Valve No. 1 Activate

Ground

Battery Voltage

13 (Purple/Yellow)

Vacuum Switching Valve No. 2 Activate

Ground

Battery Voltage

14 (Green/Red)

Throttle Motor Power Relay Activate

Ground

Battery Voltage

15 (White)

Series Low Speed Fan Activate

Ground

Battery Voltage

16 (White/Blue)

Parallel High Speed Fan Activate

Ground

Battery Voltage

17 (Brown)

Knock Sensor Feedback ("B" Bank)

Zero KHz=No Knock; 2-20 KHz=Knock

.....

18 (Gray)

Knock Sensor Feedback ("A" Bank)

Zero KHz=No Knock; 2-20 KHz=Knock

.....

19 (Yellow)

CKPS Signal

5 Volts (45 Hz=1000 RPM; 90 Hz=2000 RPM)

.....

20 (Black)

CMPS Signal

5 Hz At Idle

.....

Not Used

.....

22 (Blue/Black)

Ignition Coil Relay Activate

Ground

Battery Voltage

23 (Light Green/Pink)

Ignition Module No. 1 Switching (Coil 4A)

5 Hz At Idle

.....

24 (Light Green/Orange)

Ignition Module No. 2 Switching (Coil 3A)

5 Hz At Idle

.....

25 (Light Green/White)

Ignition Module No. 2 Switching (Coil 2A)

5 Hz At Idle

.....

26 (Light Green/Blue)

Ignition Module No. 1 Switching (Coil 1A)

5 Hz At Idle

.....

27 (Black/Green)

CKPS, CMPS, Knock Sensors Common Shield

Ground

28 (Purple)

CKPS Signal

5 Volts (45 Hz=1000 RPM; 90 Hz=2000 RPM)

.....

29 (Orange)

CMPS Signal Ground

Ground

Not Used

.....

31 (Light Green/Yellow)

Ignition Module No. 2 Switching (Coil 4B)

5 Hz At Idle

.....

32 (Light Green/Red)

Ignition Module No. 1 Switching (Coil 3B)

5 Hz At Idle

.....

33 (Light Green/Gray)

Ignition Module No. 1 Switching (Coil 2B)

5 Hz At Idle

.....

34 (Light Green/Purple)

Ignition Module No. 2 Switching (Coil 1B)

5 Hz At Idle

.....

Connector EM14

1 (Green/Yellow)

Throttle Motor Power Supply

Battery Voltage

Ground

2 (Green/Yellow)

Throttle Motor Power Supply

Battery Voltage

Ground

3 (White/Red)

Ignition Switched Power Supply

Battery Voltage

Ground

4 (Black/Pink)

Ground

5 (Red)

Throttle Motor Power Supply

Battery Voltage

Ground

6 (Red)

Throttle Motor Power Supply

Battery Voltage

Ground

7 (Black)

Ground

8 (Black)

Ground

9 (Black)

Ground

10 (Black)

Ground

11 (Green)

Throttle Motor Power Supply

Ground

12 (Green)

Throttle Motor Power Supply

Battery Voltage

Ground

Connector EM15

1 (Purple/Gray)

Upstream HO2S Heater Ground ("B" Bank)

Ground

2 (Purple/Blue)

Upstream HO2S Heater Ground ("A" Bank)

Ground

3 (Purple/Brown)

EVAP Valve Activate

Ground (Valve Open)

Battery Voltage

4 (Black/Orange)

Injector 3B Activate

Ground

Battery Voltage

5 Black/Yellow)

Injector 2B Activate

Ground

Battery Voltage

6 (Black/White)

Injector 4A Activate

Ground

Battery Voltage

7 (Black/Blue)

Injector 1A Activate

Ground

Battery Voltage

8 (Red/Green)

VVT Solenoid ("B" Bank)

Ground

Battery Voltage

9 (Red/Yellow)

VVT Solenoid ("A" Bank)

Ground

Battery Voltage

Not Used

.....

11 (Black)

Ground

12 (Black)

Ground

Not Used

.....

Not Used

.....

15 (Black/Purple)

Injector 4B Activate

Ground

Battery Voltage

16 (Black/Green)

Injector 3A Activate

Ground

Battery Voltage

17 (Black/Brown)

Injector 2A Activate

Ground

Battery Voltage

18 (Black/Gray)

Injector 1B Activate

Ground

Battery Voltage

Not Used

.....

Not Used

.....

Not Used

.....

22 (Black

Ground

⁽¹⁾	Voltage decreases as temperature increases.

⁽²⁾	Voltage increases as engine RPM increases.

ENGINE CONTROL MODULE (ECM) PIN VOLTAGE ASSIGNMENTS (1999 XJ8 & XK8)

Terminal No. (Wire Color)

Circuit

Active

Inactive

Connector EM80

1 (Purple/Brown)

EVAP Valve Activate

Ground (Valve Open)

Battery Voltage

2 (Orange/Pink)

Canister Close Valve Activate

Ground

Battery Voltage

3 (Black)

Ground (Power)

Ground

4 (Green)

Throttle Motor Power Supply

Battery Voltage

Ground

5 (Green)

Throttle Motor Power Supply

Battery Voltage

Ground

6 (Red)

Throttle Motor Power Supply

Battery Voltage

Ground

7 (Red)

Throttle Motor Power Supply

Battery Voltage

Ground

8 (Green/Yellow)

Throttle Motor Power Supply

Battery Voltage

Ground

9 (Green/Yellow)

Throttle Motor Power Supply

Battery Voltage

Ground

10 (White/Blue)

Refrigerant 4-Way Pressure Switch

Ground At 290 psi (2000 kPa)

.....

11 (Blue/Brown)

A/C Control Module Compressor Clutch Request

Battery Voltage

Ground

12 (Blue/Green)

Electrical Load Inhibit

Ground

Battery Voltage

Not Used

.....

Not Used

.....

15 (Gray/Green)

EOT Feedback

2.5 Volts At 96°F (34°C); 5 Volts At 194°F (90°C) ⁽¹⁾

.....

16 (Gray/Purple)

Cruise Control On LED

Ground

Battery Voltage

17 (Orange)

Serial Communications

.....

18 (Pink)

Serial Communications

.....

19 (White)

ECM Programming

.....

20 (Purple/Green)

Cruise Control Brake Cancel Request

Ground (Applied)

Battery Voltage

21 (Black)

Ground (Throttle Motor No. 1)

Ground

22 (Red/White)

Refrigerant 4-Way Pressure Switch

Ground At 174 psi (1200 kPa)

.....

23 (Blue/Light Green)

A/C Control Module Electrical Load Request (Heated Windshield)

Battery Voltage

Ground

Not Used

.....

25 (Red/Yellow)

A/C Compressor Relay Activate

Ground

Battery Voltage

Not Used

.....

27 (Purple)

ECM Programming

.....

Not Used

.....

29 (Black/Pink)

Ground (Logic 2)

Ground

Not Used

.....

31 (Black)

Ground (Throttle Motor No. 2)

Ground

Connector EM81

1 (Orange/Yellow)

VVT Solenoid + ("A" Bank)

Battery Voltage (12% Duty Cycle At Idle) ⁽²⁾

Ground

2 (Red/Yellow)

VVT Solenoid - ("A" Bank)

Ground

3 (Purple/Pink)

EMS Control Relay Activate

Ground

Battery Voltage

4 (White/Blue)

Parallel (High) Speed Fan Activate

Ground

Battery Voltage

5 (White)

Series (Low) Speed Fan Activate

Ground

Battery Voltage

6 (Orange/Green)

VVT Solenoid + ("B" Bank)

Battery Voltage (12% Duty Cycle At Idle) ⁽²⁾

Ground

7 (Red/Green)

VVT Solenoid - ("B" Bank)

Ground

8 (Black)

Ground (Power)

Ground

9 (Pink)

Pedal Position Feedback (PPS/1)

0.5 Volt=Idle; 4.75 Volts=WOT

.....

10 (Blue)

TPS Feedback (TPS/1)

0.5 Volt=Idle; 4.75 Volts=WOT

.....

Not Used

.....

12 (Red/Blue)

Park/Neutral Confirmation

Battery Voltage (P, N)

Ground (R, D, 4, 3, 2)

13 (White/Blue)

Cruise Control On Request

Battery Voltage

Ground

14 (Gray/Red)

Cruise Control Set (+/-)

7.3 Volts="+"; 8.8 Volts="-"

Battery Voltage

15 (Gray/Green)

Cruise Control Cancel/Resume

7.3 Volts=Resume; 8.8 Volts=Cancel

Battery Voltage

16 (Red/Green)

FTP Sensor Feedback

4.9 Volts=Low Pressure

0.2 Volts=High Pressure

17 (White/Red)

EMS Switched Power Supply 1

Battery Voltage

Zero Volts

18 (Red)

Pedal Position Feedback (PPS/2)

0.5 Volt=Idle; 4.75 Volts=WOT

.....

19 (Green)

TPS Feedback (TPS/2)

0.5 Volt=Idle; 4.75 Volts=WOT

.....

Not Used

.....

21 (Black)

Ground (Logic 1)

Ground

22 (Orange/Blue)

Parking Brake Switch

Ground (Applied)

Battery Voltage

Not Used

.....

24 (Black/Green)

Pedal Position, Throttle Position Sensors Shield

Ground

ECM Connector EM82

1 (Blue/White)

Sensor Supply Voltage 1

5 Volts

2 (Green/Orange)

Engine Crank

Ground (Cranking)

.....

Not Used

.....

4 (Red)

Upstream HO2S ("A" Bank) - Variable Current

3.5 Volts

.....

5 (Green)

Upstream HO2S ("B" Bank) - Variable Current

3.5 Volts

.....

6 (Green/Red)

Throttle Motor Power Relay Activate

Ground

Battery Voltage

7 (Black/Green)

Sensor Signal Ground 1

Ground

8 (Blue/Gray)

Brake Switch

Ground

Battery Voltage

9 (White/Pink)

Ignition Switched Power Supply

Battery Voltage

10 (Yellow)

Upstream HO2S ("A" Bank) - Constant

3.8 Volts

.....

11 (White)

Upstream HO2S ("B" Bank) - Constant

3.8 Volts

.....

12 (Green/Purple)

Inertia Switch Activated

Ground

Battery Voltage

13 (White/Red)

EMS Switched Power Supply 2

Battery Voltage

Zero Volts

14 (Blue/Yellow)

ECT Feedback

0.41 Volt At 194°F (90°C) ⁽³⁾

.....

15 (Orange)

OK To Start

Encoded Communications

.....

16 (Yellow)

Security Acknowledge

Encoded Communications

.....

17 (Blue/Purple)

IATS Feedback

0.98 Volt At 194°F (90°C) ⁽³⁾

.....

Connector EM83

Not Used

.....

Not Used

.....

3 (Purple/Blue)

Air Assist Close Valve Activate

8 Volts At Idle (78% Duty Cycle)

.....

4 (Pink/Brown)

Fuel Pump Relay Activate

Ground

Battery Voltage

5 (Blue/White)

Sensor Supply Voltage 2

5 Volts

6 (Black/Green)

Sensor Shield

Ground

7 (Purple)

CKPS Signal Ground

Ground

8 (Yellow)

CKPS Signal

5 Volts (1000 RPM=45 Hz; 2000 RPM=90 Hz)

.....

9 (Brown)

CMPS Signal Ground ("A" Bank)

Ground

10 (Gray/Green)

Ignition Coils OBD Monitor (1A, 2B, 3B, 4A)

23 Hz At Idle (5 Volts)

.....

11 (Gray/Light Green)

Ignition Coils OBD Monitor (1B, 2A, 3A, 4B)

23 Hz At Idle (5 Volts)

.....

12 (Black/Purple)

HO2S Shield

Ground

13 (Black/Green)

Sensor Signal Ground 2

Ground

14 (Gray)

Knock Sensor Feedback ("A" Bank)

0 KHz=No Knock; 2-20 KHz=Knock

.....

15 (Green)

CAN Network

15-1500 Hz

.....

16 (Green)

CAN Network

15-1500 Hz

.....

17 (Orange)

CMPS Signal Ground ("B" Bank)

Ground

18 (Black)

CMPS Signal ("B" Bank)

0.7-1.0 Volt AC (1000 RPM=43 Hz; 2000 RPM=72 Hz)

.....

19 (Green)

CMPS Signal ("A" Bank)

0.7-1.0 Volt AC (1000 RPM=43 Hz; 2000 RPM=72 Hz)

.....

20 (Brown/Orange)

Battery Power Supply

Battery Voltage

21 (Blue)

Downstream HO2S ("A" Bank)

0.1-0.9 Volt At Idle (Switching)

.....

22 (Brown)

Downstream HO2S ("B" Bank)

0.1-0.9 Volt At Idle (Switching)

.....

23 (Brown)

Knock Sensor Feedback ("B" Bank)

0 KHz=No Knock; 2-20 KHz=Knock

.....

24 (Yellow)

CAN Network

15-1500 Hz

.....

25 (Yellow)

CAN Network

15-1500 Hz

.....

26 (Black/Yellow)

MAFS Reference Ground

Ground

27 (Black/Yellow)

MAFS Reference Ground

Ground

28 (Green/Yellow)

MAFS Feedback

1.2 Volts At Idle ⁽⁴⁾

.....

Connector EM84

1 (Black)

Downstream HO2S Heater Ground

Ground

2 (Black/Blue)

Injector 1A Activate

Ground

Battery Voltage

3 (Black/Orange)

Injector 3B Activate

Ground

Battery Voltage

4 (Black/Yellow)

Injector 2B Activate

Ground

Battery Voltage

5 (Black/White)

Injector 4A Activate

Ground

Battery Voltage

6 (Black/Gray)

Injector 1B Activate

Ground

Battery Voltage

7 (Purple/Green)

Downstream HO2S Heater Control ("A" Bank)

Ground (20-60% Duty Cycle)

Battery Voltage

Not Used

.....

9 (Green/White) ⁽⁵⁾

Ignition Module Switching (Coil 4A)

Ground (85-90% Duty Cycle At Idle)

Battery Voltage

10 (Green/Orange) ⁽⁵⁾

Ignition Module Switching (Coil 3A)

Ground (85-90% Duty Cycle At Idle)

Battery Voltage

11 (Green/Red) ⁽⁵⁾

Ignition Module Switching (Coil 2A)

Ground (85-90% Duty Cycle At Idle)

Battery Voltage

12 (Green/Blue) ⁽⁵⁾

Ignition Module Switching (Coil 1A)

Ground (85-90% Duty Cycle At Idle)

Battery Voltage

13 (Black/Purple)

Injector 4B Activate

Ground

Battery Voltage

14 (Black/Green)

Injector 3A Activate

Ground

Battery Voltage

15 (Purple/Red)

Downstream HO2S Heater Control ("B" Bank)

Ground (20-60% Duty Cycle)

Battery Voltage

16 (Black)

Injector Ground (1A, 2A, 3B, 4A)

Ground

17 (Green/Purple) ⁽⁵⁾

Ignition Module Switching (Coil 4B)

Ground (85-90% Duty Cycle At Idle)

Battery Voltage

18 (Green/Pink) ⁽⁵⁾

Ignition Module Switching (Coil 3B)

Ground (85-90% Duty Cycle At Idle)

Battery Voltage

19 (Green/Gray) ⁽⁵⁾

Ignition Module Switching (Coil 2B)

Ground (85-90% Duty Cycle At Idle)

Battery Voltage

20 (Green/Black) ⁽⁵⁾

Ignition Module Switching (Coil 1B)

Ground (85-90% Duty Cycle At Idle)

Battery Voltage

21 (Black/Brown)

Injector 2A Activate

Ground

Battery Voltage

22 (Black)

Injector Ground (1B, 2A, 3A, 4B)

Ground

Connector EM85

1 (Purple/Blue)

Upstream HO2S Heater Control ("A" Bank)

Ground (85-90% Duty Cycle At Idle)

Battery Voltage

2 (Purple/Gray)

Upstream HO2S Heater Control ("B" Bank)

Ground (85-90% Duty Cycle At Idle)

Battery Voltage

Not Used

.....

Not Used

.....

5 (Blue)

ECM Cooling Fan Activate

Ground

Battery Voltage

6 (Black)

Upstream HO2S Heater Ground ("A" Bank)

Ground

7 (Black)

Upstream HO2S Heater Ground ("B" Bank)

Ground

8 (White/Green)

HO2S Heater OBD Monitor

Battery Voltage (Heaters Active)

.....

Not Used

.....

Not Used

.....

Not Used

.....

Not Used

.....

⁽¹⁾	Voltage increases as temperature increases.

⁽²⁾	Duty cycle increases with advance.

⁽³⁾	Voltage decreases as temperature increases.

⁽⁴⁾	Voltage increases as engine RPM increases.

⁽⁵⁾	On early 1999 production XJ8, wire color is different. Use ECM connector terminal number for wire identification.