UNDERHOOD Junction Block
NOTE:
Underhood junction block is located on the passenger's side of the vehicle, in front of the windshield washer fluid reservoir. See Fig 1.
UNDERHOOD FUSE BLOCK CIRCUIT IDENTIFICATION (2002)
| Maxi Fuse | Usage |
|---|---|
| 1 | Coolant Fans |
| 2 | Not Used |
| 3 | Circuit Breakers: Front Comfort Controls Hi Blower, and Headlamp Fuses (Instrument Panel): Hazard and Stoplamp |
| 4 | Circuit Breaker: Power Seat. Fuses (Instrument Panel): Electronic Level Control and Rear Defogger |
| 5 | Ignition Switch to Fuses (Instrument Panel): ABS/TCS Ignition, Cruise, DRL, Electronic PRNDL, Ignition 1, PSD, Air Bag, Turn Signal and Powertrain Control Module [IGN MAIN Relay (Underhood Fuse Block A/C Clutch, Electronic Ignition, Ignition 1-U/H, INJ, TCC)1 |
| 6 | Coolant Fans |
| 7 | Fuses (Instrument Panel): ABS Module Battery, Cigarette Lighter, Courtesy Lamps, Front Power Socket, Power Locks, Power Mirrors and Right Rear Power Socket |
| 8 | Ignition Switch to Fuses (I/P): Body Control Module Program, Front Comfort Controls Low/Medium Blower, Front Wiper/Washer, HVAC/DRL, MALL/Radio/DIC, Power Quarter Vent, Rear HVAC, Rear Wiper/Washer. SWC Accessory and Power Window Circuit Breaker |
| Mini Relays | Usage |
| 9 | Right Fan 1, Left Fan 2 Relay |
| 10 | Left Fan 2 |
| 11 | Fuses: A/C Clutch, Ignition 1 -U/H, INS, Electronic Ignition Relay, TCCRelay |
| 12 | Right Fan 1, Left Fan 2 |
| Micro Relays | Usage |
| 13 | A/C Clutch Relay |
| 14 | Fuel Pump Relay |
| 15 | Not Used |
| 16 | Horn Relay |
| 17 | Left Fog Lamp, Right Fog Lamp Relay, Fog Lamp Indicator |
| Mini Fuse | Usage |
| 18 | Fuel Injectors 1 -6 |
| 19 | Not Used |
| 20 | Not Used |
| 21 | Evaporative Emissions (EVAP) Canister Purge Valve, Heated Oxygen Sensors 1 and 2, Mass Air Flow (MAF) Sensor |
| 22 | Not Used |
| 23 | Not Used |
| 24 | Not Used |
| 25 | Ignition Control Module (ICM) |
| 26 | Not Used |
| 27 | Transaxle Range Switch to Back-up Lamps |
| 28 | A/C Clutch Relay to A/C Compressor Clutch Oil |
| 29 | Driver Information Display, Heater A/C Control, Radio, Rear Side Door Actuator Control Motor, Remote Control Door Lock Receiver (RCDLR), Security Indicator Lamp and Theft-Deterrent Shock Sensor |
| 30 | Generator |
| 31 | Automatic Transaxle (Torque Converter Clutch Solenoids) Stoplamp Switch to Powertrain Control Module |
| 32 | Fuel Pump Relay |
| 33 | Powertrain Control Module |
| 34 | Radio |
| 35 | Fog Lamp Relay |
| 36 | Horn Relay |
| 37 | Daytime Running Lamps (DRL) Control Module, Headlamps and Instrument Panel Dimmer Switch Theft-Deterrent Relay to Headlamps |
| 38 | Not Used |
| 39 | AIR |
| Diodes | |
| Air Conditioning Clutch Diode | |
| 40 | Mini Fuse Puller |
UNDERHOOD FUSE BLOCK CIRCUIT IDENTIFICATION (2003-05) (1 Of 3)
| Fuse | Usage |
| 1 | Coolant Fans |
| 2 | Not Used |
| 3 | Circuit Breakers: Front Comfort Controls Hi Blower, and Headlamp Fuses (Instrument Panel): Hazard and Stoplamp, PASS-Key |
| 4 | Circuit Breaker: Power Seat and Power Sliding Door. Fuses (Instrument Panel): Electronic Level Control and Rear Defogger, Trailer, Fog Lamps |
| 5 | Ignition Switch to Fuses (Instrument Panel): ABS/TCS Ignition, Cruise, DRL, Electronic PRNDL, Ignition 1, AWD, PSD, Air Bag, Turn Signal and Powertrain Control Module [IGN MAIN Relay (Underhood Fuse Block: A/C Clutch, Electronic Ignition, Ignition 1-U/H, INJ, TCC)] |
| 6 | Coolant Fans |
| 7 | Fuses (Instrument Panel): ABS Module Battery, Cigarette Lighter, Courtesy Lamps, Front Power Socket, Power Locks, Power Mirrors and Right Rear Power Socket, OnStar, RAP |
| 8 | Ignition Switch to Fuses (I/P): Body Control Module Program, Front Comfort Controls Low/Medium Blower, Front Wiper/Washer, HVAC/DRL, MALL/Radio/DIC, Power Quarter Vent, Rear HVAC, Rear Wiper/Washer. SWC Accessory and Power Window Circuit Breaker, RAP |
| 18 | Fuel Injectors 1-6 |
| 19 | Not Used |
| 20 | Not Used |
| 21 | Evaporative Emissions (EVAP) Canister Purge Valve, Heated Oxygen Sensors 1 and 2, Mass Air Flow (MAF) Sensor |
| 22 | Not Used |
| 23 | Not Used |
| 24 | Not Used |
| 25 | Ignition Control Module (ICM) |
| 26 | Not Used |
| 27 | Transaxle Range Switch to Back-up Lamps |
| 28 | A/C Clutch Relay to A/C Compressor Clutch Oil |
| 29 | Driver Information Display, Heater A/C Control, Radio, Rear (LH and RH) Side Door Actuator Control Motor, Remote Control Door Lock Receiver (RCDLR), Security Indicator Lamp and Theft-Deterrent Shock Sensor |
| 30 | Generator |
| 31 | Automatic Transaxle (Torque Converter Clutch Solenoids) Stoplamp Switch to Powertrain Control Module |
| 32 | Fuel Pump Relay |
| 33 | Powertrain Control Module |
| 34 | Not Used |
| 35 | Fog Lamp Relay |
| 36 | Horn Relay |
| 37 | Daytime Running Lamps (DRL) Control Module, Headlamps and Instrument Panel Dimmer Switch Theft-Deterrent Relay to Headlamps |
| 38 | Not Used |
| 39 | AIR |
UNDERHOOD FUSE BLOCK CIRCUIT IDENTIFICATION (2003-05) (2 Of 3)
| Fuse | Usage |
|---|---|
| 40 | Mini Fuse Puller |
| Air Conditioning Clutch Diode |
UNDERHOOD FUSE BLOCK CIRCUIT IDENTIFICATION (2003-05) (3 Of 3)
| Relay | Usage |
|---|---|
| 9 | Right Fan 1, Left Fan 2 |
| 10 | Left Fan 2 |
| 11 | Fuses: A/C Clutch, Ignition 1-U/H, Electronic Ignition, TCC, Injectors |
| 12 | Right Fan 1, Left Fan 2 |
| 13 | A/C Clutch |
| 14 | Fuel Pump |
| 15 | Not Used |
| 16 | Horn |
| 17 | Left Fog Lamp, Right Fog Lamp, Fog Lamp Indicator |