AUXILIARY BATTERY RELAY
| CAUTION | When battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery. |
Note. For component location, see ELECTRICAL COMPONENT LOCATOR article.
AUXILIARY BLOWER MOTOR RELAY
| CAUTION | When battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery. |
Note. For component location, see ELECTRICAL COMPONENT LOCATOR article.
AUXILIARY BLOWER MOTOR SPEED RELAY
| CAUTION | When battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery. |
Note. For component location, see ELECTRICAL COMPONENT LOCATOR article.
BATTERY JUNCTION BOX (BJB)
| CAUTION | When battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery. |
Note. For component location, see ELECTRICAL COMPONENT LOCATOR article.
Scheme 342
| FUSE | AMPS | CIRCUITS PROTECTED |
|---|---|---|
| F11 | Not used | |
| F12 | 40 | Run/Start relay (modified vehicle) |
| F13 | 30 | Starter relay |
| F14 | 40 | Run/Start relay |
| F15 | 40 | Modified vehicle power (stripped chassis/modified vehicle) |
| F16 | 50 | Auxiliary blower motor relay (except cutaway) |
| F17 | 50 | Auxiliary battery diode (with auxiliary battery), F57, F63 |
| F18 | 30 | Trailer Brake Control (TBC) module |
| F19 | 30 | Upfitter relay 1 |
| F20 | 30 | Upfitter relay 2 |
| F21 | 50 | Fuel Injector Control Module (FICM) power relay (Diesel) |
| F22 | Not used | |
| F26 | Not used | |
| F27 | Not used | |
| F28 | 20 | Reversing lamp relay |
| F29 | 10 | A/C clutch relay |
| F30 | 10 | Stoplamp switch |
| F31 | 10 | Fuel Injector Control Module (FICM) power relay (Diesel), Instrument Panel Cluster (IPC) (stripped chassis) |
| F32 | 50 | Blower motor relay |
| F33 | 40 | Anti-lock Brake System (ABS) module |
| F34 | 20 | Horn relay (stripped chassis) |
| F35 | 40 | PCM power relay |
| F36 | 20 | Ignition switch (stripped chassis) |
| F41 | 10 | Generator, secondary (Diesel) |
| F42 | 15 | Data Link Connector (DLC) (stripped chassis) |
| F43 | 20 | Fuel pump relay |
| F44 | 10 | Upfitter relay 3 |
| F45 | 15 | Upfitter relay 4 |
| F46 | 10 | Powertrain Control Module (PCM), PCM power relay, Evaporative emission (EVAP) canister vent valve (gas) |
| F47 | 40 | Anti-lock Brake System (ABS) module |
| F48 | 20 | Trailer tow relay, left turn/stop, Trailer tow relay, right turn/stop |
| F49 | 30 | Windshield wiper relay |
| F50 | Not used | |
| F51 | 20 | Battery power (cutaway) |
| F52 | 10 | Run/Start relay (stripped chassis/modified vehicle) |
| F53 | 10 | Anti-lock Brake System (ABS) module, Steering position sensor (with AdvanceTrac®) |
| F54 | 10 | Powertrain Control Module (PCM) (gas), Fuel pump motor diode (gas) |
| F55 | 10 | Powertrain Control Module (PCM) (Diesel) |
| F56 | 20 | Fuel Injector Control Module (FICM), Fuel heater (Diesel) |
| F57 | 20 | Trailer tow relay, parking lamp |
| F58 | 15 | Trailer tow connector, 7-pin |
| F59 | Not used | |
| F63 | 30 | Trailer tow relay, battery charge (except stripped chassis) |
| F64 | Not used | |
| F65 | 20 | Power point 2, instrument panel (except stripped chassis) |
| F66 | 20 | Power point, rear (except stripped chassis) |
| F67 | 20 | Power point 1, instrument panel (except stripped chassis) |
| F68 | 50 | Modified vehicle power |
| F69 | Not used | |
| F70 | 30 | Instrument panel battery power (stripped chassis) |
| F71 | Not used | |
| F72 | 20 | Cigar lighter, front (except stripped chassis) |
| F73 | Not used | |
| F74 | 30 | Seat control switch, driver side front (except stripped chassis) |
| F75 | 20 | Powertrain Control Module (PCM) |
| F76 | 20 | Mass Air Flow/Intake Air Temperature (MAF/IAT) sensor, Heated oxygen sensors (gas), Evaporative emission (EVAP) canister purge valve (gas), EVAP canister purge valve (gas), Stoplamp switch (gas), EGR system module (4.6L), Electronic fan clutch (Diesel), EGR valve actuator (Diesel), Injection Pressure Regulator (IPR) Diesel), Glow Plug Control Module (GPCM) (Diesel), Universal heated oxygen sensors (gas) |
| F77 | 10 | A/C clutch relay, Reversing lamp relay. Heated Positive Crankcase Ventilation (PCV) valve (4.6L and 6.8L), Positive Crankcase Ventilation (PCV) heater fitting (4.6L) |
| F78 | 15 | Coil On Plug (COP) (gas), Ignition transformer capacitor 1 (gas), Ignition transformer capacitor 2 (4.6L and 5.4L), Fuel pump motor diode (Diesel) |
| F79 | 10 | Overdrive cancel switch. 4R75E transmission |
| F80 | 10 | Instrument Panel Cluster (IPC) run/start power (stripped chassis) |
| F81 | 15 | Fuel Injector Control Module (FICM) |
| F82 | Not used | |
| F84 | Not used |
COMPONENT TESTING PROCEDURE
FUSIBLE LINKS
| CAUTION | When battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery. |
Note. For component location, see ELECTRICAL COMPONENT LOCATOR article.
SMART JUNCTION BOX (SJB)
| CAUTION | When battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery. |
Note. For component location, see ELECTRICAL COMPONENT LOCATOR article.
Scheme 343
| FUSE | AMPS | CIRCUITS PROTECTED |
|---|---|---|
| F1 | 30 | Not used |
| F2 | 15 | Not used |
| F3 | 15 | Not used |
| F4 | 30 | Not used |
| F5 | 10 | Smart Junction Box (SJB), Brake shift interlock |
| F6 | 20 | Turn signal lamps, Hazard lamps, Stop lamps |
| F7 | 10 | Headlamp, left (low beam) |
| F8 | 10 | Headlamp, right (low beam) |
| F9 | 15 | Courtesy lamps |
| F10 | 15 | Switch illumination |
| F11 | 10 | Not used |
| F12 | 7.5 | Not used |
| F13 | 5 | Exterior rear view mirror switch |
| F14 | 10 | Accessory Protocol Interface Module (APIM), Global Positioning System Module (GPSM) |
| F15 | 10 | Satellite Digital Audio Receiver System (SDARS) module |
| F16 | 15 | Not used |
| F17 | 20 | Driver door unlock relay, Door lock relay, Liftgate glass release relay, Smart Junction Box (SJB) |
| F18 | 20 | Not used |
| F19 | 25 | Not used |
| F20 | 15 | Data Link Connector (DLC) (except stripped chassis) |
| F21 | 15 | Fog lamp relay, Smart Junction Box (SJB) |
| F22 | 15 | Park lamp relay |
| F23 | 15 | High beam relay |
| F24 | 20 | Horn relay |
| F25 | 10 | Demand lighting |
| F26 | 10 | Instrument Panel Cluster (IPC) |
| F27 | 20 | Ignition switch |
| F28 | 5 | Audio Control Module (ACM), In-dash computer (Work Solutions) |
| F29 | 5 | Instrument Panel Cluster (IPC) |
| F30 | 5 | Not used |
| F31 | 10 | Not used |
| F32 | 10 | Restraints Control Module (RCM) |
| F33 | 10 | Trailer Brake Control (TBC) module |
| F34 | 5 | Not used |
| F35 | 10 | Parking Aid Module (PAM), Video camera |
| F36 | 5 | Passive anti-theft transceiver |
| F37 | 10 | Climate control assembly, Temperature blend door actuator |
| F38 | 20 | Not used |
| F39 | 20 | Audio Control Module (ACM), In-dash computer (Work Solutions) |
| F40 | 20 | Audio Amplifier |
| F41 | 15 | Door lock switch, driver side, Door lock switch, passenger side, Door lock switch, rear doors, Rear view camera display mirror, Audio Control Module (ACM), Auto-dimming interior mirror |
| F42 | 10 | Upfitter switch |
| F43 | 10 | Customer access (stripped chassis) |
| F44 | 10 | Auxiliary battery diode |
| F45 | 5 | Windshield wiper motor, Windshield wiper relay, Trailer tow relay, battery charge |
| F46 | 7.5 | Passenger Airbag Deactivation (PAD) switch |
| F47 | 30 c.b. | Master window adjust switch, Window adjust switch, passenger side |
COMPONENT TESTING PROCEDURE
See also:
• ELECTRICAL COMPONENT LOCATOR