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Instrument Panel - Analog: Testing: Notes

NOTE: When testing suspect gauges/indicators, refer to appropriate illustrations to identify instrument cluster terminals. See Fig 1 .
INSTRUMENT INDICATORS CLUSTER CONNECTER PINS TEST (1)

Cavity  Wire Color  Ckt No.  Description 
A1 BLK/ORN 233 Brake Indicator (Grounded With Parking Brake Set)
A2 DK BLU 15 Right Turn Signal Indicator (Pulsing Battery Voltage With Right Turn Signal On)
A3 BRN 25 AMP Indicator Input (Grounded With Engine Not Charging)
A4 YEL 237 Fasten Belts Indicator Input
A5 BLK 152 Ground
A7 PNK/BLK 39 Ignition Power (Battery Voltage)
A8 LT BLU 14 Left Turn Signal Indicator (Pulsing Battery Voltage With Left Turn Signal On)
A9 TAN 31 Oil Pressure Indicator Input (Grounded With Low Oil Pressure)
A10 BRN 358 Inflatable Restraint Indicator
A11 WHT 852 Anti-Lock Indicator
A15 PPL/WHT 1572 Traction Off Indicator
A16 TAN 1299 Low Wash Fluid Indictor (Battery Voltage With Washer Fluid Level Low)
A17 LT GRN 11 High Beam Indicator Input (Battery Voltage With High Beams On)
B1 YEL/BLK 68 Low Coolant Indicator Input (Grounded When Coolant Level Is Low)
B2 BRN/WHT 419 Service Engine Soon Indicator
B4 BRN/WHT 1300 Firm Ride Indicator
B5 BRN/WHT 1173 Check Oil Level Indicator Input
B6 YEL 715 Low Fuel Indicator (Grounded When Fuel Level Is Low
B7 PPL 30 Fuel Gauge Sender Input (0-90 Ohms)
B8 BRN 50 Ignition Input (Battery Voltage)
B9 PNK/BLK 439 Ignition Input (Battery Voltage)
B10 BLK/WHT 803 Ground
B11 BLK/WHT 803 Ground
B12 DK GRN 389 Vehicle Speed Input
B13 DK GRN/WHT 635 Coolant Temperature Gauge Input
B14 PNK/BLK 1268 Hot Indicator Input
B15 DK GRN 264 Security Indicator Input
B16 BLK 152 Ground
B17 GRY 8 Illumination Input (Voltage Varied With Dimmer Adjusted And Lights On)
(1) Cavities not shown are NOT USED.
NOTE: Ground G102 is located in right front of engine compartment, under Electronic Ignition (EI) module. Ground G103 is located in right front of engine compartment, above right horn. Ground G202 is located in middle of left shroud. Ground G203 is located in middle of right shroud
Fig 1: Testing Instrument Indicators Cluster Connector Pins
G93D44886Courtesy of GENERAL MOTORS CORP.
INSTRUMENT GAUGES CLUSTER CONNECTOR C1 PINS TEST (1)

Cavity  Wire Color  Ckt No.  Description 
A1 GRY 8 Illumination Input To DIC Display
A2 BLK/WHT 803 English/Metric Input (Ground On Export Vehicles; Open On Domestic Vehicles)
A3 LT BLU 811 English/Metric Output To HVAC Programmer
A5 DK GRN 389 Vehicle speed Sensor Input
A6 DK GRN 44 Lights On Input (Battery Voltage With Lights On)
A7 BRN 50 Ignition Input (Battery Voltage With Ignition Switch In RUN Position)
A8 GRY 8 Illumination Input (Variable Voltage With Lights On & Dimmer Control Varied)
A10 PPL/WHT 1572 Traction Off Indicator
A12 BRN 25 Generator Input
A13 WHT 85 Cruise Indicator
A14 LT BLU 14 Left Turn Signal Indicator
A15 YEL 510 Temperature Gauge Input (55 Ohms @ 260°F & 1365 Ohms @ 100°F)
A16 WHT 121 Tachometer Input
A17 BLK 152 Ground
B1 TAN/WHT 33 Low Brake Fluid Input
B2 BLK/ORN 233 Park Brake Input
B4 BLK/YEL 745 Driver's Door Ajar Input (Grounded With Driver's Front Door Open)
B5 BLK/WHT 746 Passenger Door Ajar Input (Grounded With Passenger's Front Door Open)
B6 BLK/LT GRN 748 Rear Door Ajar Input (Grounded With Either Drvier's Or Passenger's Rear Door Open)
B7 BLK/WHT 99 Low Washer Fluid Level Input (Grounded When Washer Fluid Is Low)
B8 BRN/WHT 1173 Low Oil Level Input
B9 WHT 1279 Lamp Monitor Data Line
B10 DK BLU 1481 DIC Switch Assembly Column 1 Switch Input
B11 LT BLU 1482 DIC Switch Assembly Column 2 Switch Input
B12 DK GRN 1483 DIC Switch Assembly Column 3 Switch Input
B13 LT GRN 1484 DIC Switch Assembly Column 4 Switch Input
B14 LT GRN 1656 Traction Control Engaged Input
B15 YEL/BLK 68 Low Coolant Level Input (Grounded When Washer Fluid Is Low)
B16 PNK/BLK 39 Ignition Power Input (Battery Voltage With Ignition Switch In RUN, BULB TEST Or START Position)
B17 TAN 800 Serial Data Line
(1) Cavities not shown are NOT USED.
NOTE: Ground G102 is located in right front of engine compartment, under Electronic Ignition (EI) module. Ground G103 is located in right front of engine compartment, above right horn. Ground G104 is located in left front of engine compartment, above left horn. Ground G202 is located in middle of left shroud. Ground G203 is located in middle of right shroud.
Fig 2: Testing Instrument Gauges Cluster Connector C1 Pins
G93E44887Courtesy of GENERAL MOTORS CORP.
INSTRUMENT GAUGES CLUSTER CONNECTOR C2 PINS TEST (1)

Cavity  Wire Color  Ckt No.  Description 
A1 BRN 50 Ignition Power (Battery Voltage With Ignition Switch In RUN Position)
A2 BLK 152 Ground
A3 BLK/WHT 803 Ground
A4 GRY 8 Illumination Input (Variable Voltage With Lights On & Dimmer Control Adjusted)
A5 BRN 358 Inflatable Restraint Warning Lamp
A6 BRN/WHT 419 Service Engine Soon Indicator
A8 YEL 237 Fasten Belts Indicator
A9 LT GRN 11 High Beam Indicator (Battery Voltage With High Beam Headlights On)
A10 DK BLU 15 Right Turn Signal Indicator
A11 WHT 852 Anti-Lock Indicator
A13 PPL 30 Fuel Gauge Input (Less Than 2 Ohms At Empty & 90 Ohms At Full)
A14 TAN/BLK 231 Oil Pressure Sender Input (Less Than 2 Ohms At 0 PSI. & 86 Ohsm @ At 120 PSI)
A16 PNK/BLK 39 Ignition Power (Battery Voltage With Ignition Switch in RUN, BULB TEST Or START Positions)
A17 BRN 50 Ignition Power (Battery Voltage With Ignition In RUN Position)
B1 GRY 8 Illumination Input (Variable Voltage With Lights On & Dimmer Control Varied)
B5 PNK/BLK 439 Ignition Power (Battery Voltage With Ignition Switch In RUN Position)
B6 ORN 40 Battery Input
B7 RED 1485 DIC Switch Assembly Row 1 Strobe Output
B8 ORN 1486 DIC Switch Assembly Row 2 Strobe Output
B9 TAN 1487 DIC Switch Assembly Row 3 Strobe Output
B10 WHT 815 Chime Control Output
B11 TAN 1278 Lamp Monitor Serial Data Input
B16 PNK/BLK 1268 Coolant Over Temperature Input
(1) Cavities not shown are NOT USED.
NOTE: Ground G102 is located in right front of engine compartment, under Electronic Ignition (EI) module. Ground G103 is located in right front of engine compartment, above right horn. Ground G104 is located in left front of engine compartment, above left horn. Ground G202 is located in middle of left shroud. Ground G203 is located in middle of right shroud
Fig 3: Testing Instrument Gauges Cluster Connector C2 Pins
G93F44888Courtesy of GENERAL MOTORS CORP.
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