Engine Compartment Fuse-Relay Center
NOTE:
The Engine Compartment relay is in the engine compartment on the driver's side of the vehicle.
ENGINE COMPARTMENT FUSE BOX CIRCUIT IDENTIFICATION (2002)
| NAME | CIRCUITS PROTECTED |
|---|---|
| SPARE | Spare Fuse |
| A.I.R. | Air Pump |
| BLOWER | Front Blower Motor |
| ABS | Electronic Brake Control Module |
| [GN B | Ignition Switch |
| IGN A | Starter Relay, Ignition Switch |
| BATT | Instrument Panel Fuse Block |
| LIGHTING | Instrument Panel Fuse Block, Headlamp Switch |
| RH-HDLP | Right-hand Headlamp (Export only) |
| LH-HDLP | Left-hand Headlamp (Export only) |
| RH-HIBM | Right-hand High-beam Headlamp (Export only) |
| LH-HIBM | Left-hand High-beam Headlamp (Export only) |
| ETC | Electronic Throttle Control |
| RR BLOWER | Rear Auxiliary Blower Motor Relays |
| CNG | Compressed Natural Gas |
| ENG-I | Heated O2 Sensors, Mass Air Flow Sensor, Evap Canister Purge Valve. Crankshaft Position Sensor, Secondary Air Injection Relay (Diesel), Water in Fuel Sensor (Diesel). Fuel Heater (Diesel), Glowplug Relay (Diesel), Wastegate Solenoid (Diesel) |
| ECM-I | Ignition Coil, Camshaft Position Sensor, VCM***. Fuel Injectors. Coil Driver |
| IGN-E | Air Conditioning Clutch Relay |
| SPARE | Spare Fuse |
| SPARE | Spare Fuse |
| SPARE | Spare Fuse |
| A/C | Air Conditioning Clutch Relay |
| HORN | Horn Relay, Underhood Lamp(s) |
| ECM-B | Fuel Pump Relay, VCM, PCM, Fuel Pump and Engine Oil Pressure Switch |
| SPARE | Spare Fuse |
| SPARE | Spare Fuse |
| AUX A | Upfitter Provisions |
| AUX B | Upfitter Provisions |
| A/C RELAY | Air Conditioning |
| HORN RELAY | Horn |
| A.I.R. RELAY | Air |
| FUEL PUMP RELAY | Fuel Pump |
| STARTER RELAY | Starter |
| ABS EXPORT RELAY | ABS Export |
ENGINE COMPARTMENT FUSE BOX FUSE AND RELAY IDENTIFICATION (2003-04)
| FUSE AND RELAY NUMBER | FUSE AND RELAY DESCRIPTION |
|---|---|
| 1 | Radio Battery |
| 2 | Powertrain Control Module Battery |
| 3 | Left Rear Turn Lamp |
| 4 | Right Rear Turn Lamp |
| 5 | Backup Lamps Trailer Wiring |
| 6 | Ignition 0 |
| 7 | Stop Lamp |
| 8 | Right Rear Defogger/Heated Mirror |
| 9 | Right Daytime Running Lamp/Turn Signal |
| 10 | Left Daytime Running Lamp/ Turn Signal |
| 11 | Truck Body Control Module 4 |
| 12 | Fuel Pump |
| 13 | Trailer |
| 14 | Flasher |
| 15 | Horn |
| 16 | Truck Body Control Module 3 |
| 17 | Trailer Stop/Turn Signal |
| 18 | Truck Body Control Module 2 |
| 19 | Truck Body Control Module |
| 20 | Remote Function Actuator |
| 21 | Engine 2 |
| 22 | Ignition E |
| 23 | Engine 1 |
| 24 | Truck Body Control Module Ignition 1 |
| 25 | Spare |
| 26 | RPA/Inside Rearview Mirror |
| 27 | Crankcase |
| 28 | Brake Transmission Shift Interlock System |
| 29 | Auxiliary Power Outlets |
| 30 | Cigarette Lighter |
| 31 | Instrument Panel Cluster |
| 32 | Air Conditioning |
| 33 | Spare |
| 34 | Vent |
| 35 | Spare |
| 36 | Vehicle Back Up |
| 37 | Supplemental Inflatable Restraint System |
| 38 | Powertrain Control Module Ignition 1 |
| 39 | Oxygen Sensor B |
| 40 | Oxygen Sensor A |
| 41 | Windshield Wipers |
| 42 | Right Headlamp - Low Beam |
| 43 | Left Headlamp - Low Beam |
| 44 | Left Headlamp - High Beam |
| 45 | Right Headlamp - High Beam |
| 46 | Truck Body Control Module - Accessory |
| 47 | Front Windshiels Wiper |
| 48 | Anti-Lock Brakes |
| 49 | Ignition A |
| 50 | Trailer |
| 51 | Climate Control Blower |
| 52 | Ignition B |
| 53 | Windshield Wiper Relay |
| 54 | Air Conditioning Relay |
| 55 | Spare |
| 56 | Headlamp - High Beam Relay |
| 57 | Fuel Pump Relay |
| 58 | Headlamp - Low Beam Relay |
| 59 | Horn Relay |
| 60 | Power Seat Circuit Breaker |
| 61 | Starter Relay |
| 62 | Spare |
| 63 | Spare |
| 64 | Spare |