Pontiac Montana (1999) – fuse box diagram
Year of production: 1999
Instrument Panel Fuse Block
The instrument panel fuse block is located at the right end of the instrument panel, on the passenger’s side of the vehicle.
| Fuses | Usage |
| HEADLAMP | Daytime Running Lamps (DRL) Control Module, Headlamp and Instrument Panel Dimmer Switch |
| PWR WDO | Front Power Windows |
| PWR/HEATED SEAT PSD | Six-Way Power Seats and Rear Side Door Actuator Motor |
| FRT HVAC HI BLWR | Blower Motor Hi Speed Relay Module |
| SWC BACKLIGHT | Steering Wheel Radio Control Switches (Illumination) |
| ELEC PRNDL | Instrument Cluster to PRNDL Indicators |
| PWR MIRROR | Power Remote Control Mirror Switch |
| CRUISE | Cruise Control Module, Switch and Release Switch |
| PWR QTR VENT | Interior Lamps and Multifunction Switch (Power Vent Switch) |
| FRT WPR/WSHR | Windshield Wiper/Washer Motor and Switch |
| PASS KEY | PASS-Key III System |
| PWR LOCK | Body Control Module (BCM) |
| HTD MIRROR | Heated Mirrors |
| RH T/LP | Not Used |
| RR FOG LP | Not Used |
| CIGAR/DLC | Cigarette Lighter and Data Link Connector (DLC) |
| T/SIG | Turn Signal Switch |
| RR HVAC | Rear Blower Motor, Rear Heater-A/C Control, Temperature Door Actuator (Rear) |
| SWC ACCY | Steering Wheel Radio Control Switches |
| HAZARD | Turn Signal Switch |
| RR PWR SCKT | Rear Electric Accessory Plug Housing |
| DRL | Daytime Running Lamps (DRL) Control Module |
| LH T/LP | Not Used |
| RR DEFOG | Rear Window Defogger Relay, Heated Mirrors |
| FRT PWR SCKT | Front Electric Accessory Plug Housing |
| SIR | Inflatable Restraint Control Module |
| FRT HVAC LOW/MED BLWR | Heater-A/C Control |
| MALL/RADIO/ DIC | BCM, Driver Information Display, Rear Seat Audio, ELC Sensor and Relay |
| STOP LAMP | Stoplamp Switch |
| ABS MOD BATT | Electronic Brake Control Module/Electronic Brake Traction Control Module (EBCM/EBTCM) |
| CAN VENT SOL | Evaporative Emissions (EVAP) Canister Vent Solonoid Valve |
| ELC | Electronic Level Control (ELC) Air Compressor and ELC Relay, Trailer Harness |
| CTSY LAMP | BCM |
| IGN 1 | BCM, Electronic Brake Control Indicator Lamp Driver Module, Instrument Panel Cluster, Rear Side Door Actuator Control Module, Rear Window Wiper/Washer and Multifunction Switch (Fog Lamp Switch/Traction Control Switch) and Stoplamp/Torque Converter Clutch (TCC) Switch |
| RR WPR WSHR | Rear Window Wiper Motor, Rear Window Wiper/Washer and Multifunction Switch (Rear Window Wiper/Washer Switch) |
| LH HEADLP LOW | Not Used |
| LH HEADLP HIGH | Not Used |
| ABS/TCS IGN | Electronic Brake Control Module/Electronic Brake Traction Control Module (EBCM/EBTCM) |
| ABS SOL | LH and RH Front Brake Solenoid Valve |
| HVAC/DRL | Air Inlet Actuator, DRL Control Module, Heater-A/C Control, Temperature Door Actuator (Front) and Rear Window Defogger Relay |
| BCM PRGRAM | Body Control Module (BCM) |
| RH HEAD LP LOW | Not Used |
| RH HEAD LP HIGH | Not Used |
| PCM/ABS | IGN MAIN Relay and PCM |
Underhood Fuse Block
This fuse block is located in the engine compartment, in front of the windshield washer fluid reservoir.
| Maxi Fuses | Usage | |
| 1 | COOL FAN 2 | Coolant Fans |
| 2 | — | Not Used |
| 3 | HEADLAMPS | Circuit Breakers: FRT HVAC HI BLWR, and HEADLAMP Fuses (Instrument Panel): HAZARD and STOPLAMP |
| 4 | BATT MAIN 2 | Circuit Breaker: PWR SEAT/PSD. Fuses (Instrument Panel): ELC and RR DEFOG |
| 5 | IGN MAIN 1 | Ignition Switch to Fuses (Instrument Panel): ABS/TCS IGN, CRUISE, DRL, ELEC PRNDL, IGN 1, PSD, SIR, T/SIG and PCM [IGN MAIN Relay (Underhood Electrical Center Fuses: A/C CLU, ELEK IGN, IGN 1-U/H, INJ, TCC)] |
| 6 | COOL FAN 1 | Coolant Fans |
| 7 | BATT MAIN 1 | Fuses (Instrument Panel): ABS MOD BATT, CIGAR/DLC, CTSY LAMP, FRT PWR SCKT, PWR LOCK, PWR MIRROR and RR PWR SCKT |
| 8 | -IGN MAIN 2 | Ignition Switch to Fuses (I/P): BCM PRGRM, FRT HVAC LOW/MED BLWR, FRT WPR/WSHR, HVAC/DRL, MALL/RADIO/DIC, PWR QRT VENT, RR HVAC, RR WPR/WSHR. SWC ACCY and PWR WDO Circuit Breaker |
| Mini relays | Usage | |
| 9 | COOL FAN | RH FAN 1, LH FAN 2 |
| 10 | COOL FAN 2 | LH FAN 2 |
| 11 | IGN MAIN | FUSES: A/C CLU, IGN 1-U/H, INS, ELEK IGN, TCC |
| 12 | COOL FAN 1 | RH FAN 1, LH FAN 2 |
| Micro relays | Usage | |
| 13 | A/C CLU | A/C Clutch |
| 14 | FUEL PUMP | Fuel Pump |
| 15 | F/PMP SPD CONT | Not Used |
| 16 | HORN | Horn |
| 17 | FOG LAMP | Left Fog Lamp, Right Fog Lamp, Fog Lamp Indicator |
| Mini fuses | Usage | |
| 18 | INJ | Fuel Injectors 1-6 |
| 19 | SPARE | Not Used |
| 20 | — | Not Used |
| 21 | IGN1-UH | Evaporative Emissions (EVAP) Canister Purge Valve, Heated Oxygen Sensors 1 and 2, Mass Air Flow (MAF) Sensor |
| 22 | SPARE | Not Used |
| 23 | SPARE | Not Used |
| 24 | SPARE | Not Used |
| 25 | ELEK IGN | Ignition Control Module (ICM) |
| 26 | SPARE | Not Used |
| 27 | B/U LAMP | Transaxle Range Switch to Back-up Lamps |
| 28 | A/C CLU | A/C Clutch Relay to A/C Compressor Clutch Oil |
| 29 | RADIO | 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 | ALT SENSE | Generator |
| 31 | TCC | Automatic Transaxle (Torque Converter Clutch Solenoids) Stoplamp Switch to PCM |
| 32 | FUEL PUMP | Fuel Pump Relay |
| 33 | ECM SENSE | Powertrain Control Module (PCM) |
| 34 | — | Not Used |
| 35 | FOG LP | Fog Lamp Relay |
| 36 | HORN | Horn Relay |
| 37 | PARK LP | Daytime Running Lamps (DRL) Control Module, Headlamps and Instrument Panel Dimmer Switch Theft-Deterrent Relay to Headlamp |
| 38 | — | Not Used |
| 39 | SPARE | Not Used |
| 40 | — | Mini Fuse Puller |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.