Section 15 (Body Control Modules)
WARNING: This page is about a different car, the 2002 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
- Description & Operation
- Component Locations
- Servicing
- Programming
- Trouble Shooting
- Self-Diagnostic System
- Diagnostic Tests
- Notes
- Chime
- Communication
- Electrically Heated Systems
- Driver Seat Heat Output Open/Sht To Battery (Laredo)
- Driver Seat Heat Output Open/Sht To Battery (Limited)
- Driver Seat Heat Output Short To Gnd (Limited)
- Driver Seat Heat Output Short To Ground (Laredo)
- Driver Thermistor Out Of Range High
- Driver Thermistor Out Of Range Low
- Passenger Seat Heat Output Open/Sht To Battery (Laredo)
- Passenger Seat Heat Output Open/Sht To Battery (Limited)
- Passenger Seat Heat Output Short To Gnd (Laredo)
- Passenger Seat Heat Output Short To Gnd (Limited)
- Passenger Thermistor Out Of Range High
- Passenger Thermistor Out Of Range Low
- Rear Def Relay Shorted Hi
- Rear Defogger Relay Open
- Exterior Lighting Systems
- Fog Lamp Relay Circuit Shorted Hi
- Fog Lamp Relay Circuit Shorted Lo/Open
- Hazard Relay Circuit Shorted Hi
- Headlamp Sw Open Circuit
- Headlamp Sw Short To Ground
- High Beam Relay Circuit Shorted Hi
- Low Beam Relay Circuit Shorted Hi
- Low Beam Relay Circuit Shorted Lo/Open
- Park Lamp Relay Circuit Shorted Hi
- Park Lamp Relay Circuit Shorted Lo/Open
- Rear Fog Lamp Relay Circuit Open
- Rear Fog Relay Output Shorted Hi
- HVAC
- Ambient Air Temp Failure (AZC) (Active)
- Ambient Air Temp Failure (AZC) (Stored)
- Blower Select Sw Open (AZC) (Active)
- Blower Select Sw Open (AZC) (Stored)
- Blower Select Sw Shorted (AZC) (Active)
- Blower Select Sw Shorted (AZC) (Stored)
- Cal Checksum Failure (AZC) (Active)
- Cal Checksum Failure (AZC) (Stored)
- Country Code Failure (AZC) (Active)
- Country Code Failure (AZC) (Stored)
- Defective I/R Sensor (AZC) (Active)
- Defective I/R Sensor (AZC) (Stored)
- Driver Blend Door Not Responding (AZC) (Active)
- Driver Blend Door Not Responding (AZC) (Stored)
- Driver Blend Door Range Too Large (AZC) (Active)
- Driver Blend Door Range Too Large (AZC) (Stored)
- Driver Blend Door Range Too Small (AZC) (Active)
- Driver Blend Door Range Too Small (AZC) (Stored)
- Engine Coolant Response Failure (AZC) (Active)
- Engine Coolant Response Failure (AZC) (Stored)
- Engine RPM Failure (AZC) (Active)
- Engine RPM Failure (AZC) (Stored)
- Evap Temp Sensor Open (MTC & AZC)
- Evap Temp Sensor Shorted (MTC & AZC)
- IAT Response Failure (AZC) (Active)
- IAT Response Failure (AZC) (Stored)
- Mode Door Range Too Large (AZC) (Active)
- Mode Door Range Too Large (AZC) (Stored)
- Mode Door Range Too Small (AZC) (Active)
- Mode Door Range Too Small (AZC) (Stored)
- Mode Motor Not Responding (AZC) (Active)
- Mode Motor Not Responding (AZC) (Stored)
- Mode Select Sw Open (AZC) (Active)
- Mode Select Sw Open (AZC) (Stored)
- Mode Select Sw Shorted (AZC) (Active)
- Mode Select Sw Shorted (AZC) (Stored)
- Pass Blend Door Not Responding (AZC) (Active)
- Pass Blend Door Not Responding (AZC) (Stored)
- Pass Blend Door Range Too Large (AZC) (Active)
- Pass Blend Door Range Too Large (AZC) (Stored)
- Pass Blend Door Range Too Small (AZC) (Active)
- Pass Blend Door Range Too Small (AZC) (Stored)
- Recirc Door Range Too Large (AZC) (Active)
- Recirc Door Range Too Large (AZC) (Stored)
- Recirc Door Range Too Small (AZC) (Active)
- Recirc Door Range Too Small (AZC) (Stored)
- Recirc Motor Not Responding (AZC) (Active)
- Recirc Motor Not Responding (AZC) (Stored)
- Vehicle Speed Failure (AZC) (Active)
- Vehicle Speed Failure (AZC) (Stored)
- Vehicle VIN Failure (AZC) (Active)
- Vehicle VIN Failure (AZC) (Stored)
- VF Dimming Failure (AZC) (Active)
- VF Dimming Failure (AZC) (Stored)
- Instrument Cluster
- ABS Lamp Circuit Short Airbag Lamp Driver Failure Brake Lamp Circuit Short
- ABS Lamp Open, Airbag Lamp Open &/Or Brake Lamp Open
- ABS Message Not Received By MIC
- ACM Message Not Received By MIC
- BCM Messages Not Received By MIC
- CHECKSUM Failure
- EATX Message Status
- No PCI BUS Communication
- PCM Message Not Received By MIC
- SKIM Message Not Received By MIC
- Interior Lighting
- Memory Seat
- Overhead Console
- Ambient Temperature Sensor Circuit Open
- Ambient Temperature Sensor Circuit Short
- BUS Messages Missing
- Compass Test Failure
- Coolant Level Switch Circuit Open (Gas Only)
- Demagnetize Compass
- EVIC Internal Failure
- No BCM Messages Received
- No PCM Messages Received
- Set Compass Variance As Per Service Information
- Washer Fluid Switch Failure
- Power Sunroof Systems
- Tire Pressure Monitoring System
- Vehicle Theft/Security Systems
- BCM Message Not Received (Export Only), Pre-Arm Timeout Failure (Export Only)
- Horn Relay Circuit Shorted Hi
- ITM - EEPROM Failure (Export Only), Loopback Failure (Export Only)
- ITM - Transducer Failure (Export Only)
- ITM - VIN Mismatch (Export Only)
- No Serial Communication (Export Only), Siren Communication Failure (Export Only)
- PCM Message Not Received (Export Only)
- Siren Battery Has Been Tampered (Export Only)
- Siren EEPROM Failure (Export Only), Siren Internal Battery (Export Only), Siren ROM Failure (Export Only)
- Windshield Wiper & Washer Systems
- Symptom Tests
- Chime
- Communication
- BUS +/- Signals Open Or No Response From Automatic Zone Control Module
- BUS +/- Signals Open Or No Response From Body Control Module
- BUS +/- Signals Open Or No Response From Driver Door Module
- BUS +/- Signals Open Or No Response From Instrument Cluster
- BUS +/- Signals Open Or No Response From Passenger Door Module
- BUS +/- Signals Open Or No Response From Seat Module
- BUS +/- Signals Open Or No Response From Sentry Key Immobilizer Module
- BUS +/- Signals Open Or No Response From Vehicle Information Center
- No Response From Adjustable Pedals Module
- No Response From Airbag Control Module
- No Response From Amplifier
- No Response From Controller Antilock Brake
- No Response From ECM (PCI BUS) - Diesel Only
- No Response From ECM (SCI ONLY) - Diesel Only
- No Response From Intrusion Transceiver Module
- No Response From PCM (PCI BUS) - Gas Only
- No Response From PCM (SCI Only) - Gas Only
- No Response From Radio
- No Response From Rain Sensor
- No Response From Shifter Assembly - Diesel Only
- No Response From Transmission Control Module - Diesel Only
- No Response From Transmission Control Module - Gas Only
- PCI BUS Communication Failure
- Unable To Access Driver Door Module And/Or Passenger Door Module With DRBIII(R)
- Door Ajar
- Driver Door Ajar Circuit Shorted To Ground
- Driver Door Ajar Circuit Open
- Hood Ajar Circuit Open (If Equipped)
- Hood Ajar Circuit Short To Ground (If Equipped)
- Left Rear Door Ajar Circuit Open
- Left Rear Door Ajar Circuit Shorted To Ground
- Liftgate Ajar Circuit Open
- Liftgate Ajar Circuit Short To Ground
- Liftgate Flip-Up Ajar Circuit Open
- Liftgate Flip-Up Ajar Circuit Short To Ground
- Passenger Door Ajar Circuit Open
- Passenger Door Ajar Circuit Short To Ground
- Right Rear Door Ajar Circuit Open
- Right Rear Door Ajar Circuit Short To Ground
- Electrically Heated Systems
- Driver Seat Back Heater Inoperative (Limited)
- Driver Seat Bolster Heater Inoperative (Limited)
- Driver Seat Cushion Heater Inoperative (Limited)
- Heated Seats Inoperative Due To Key-In Ignition Switch Input
- Passenger Seat Back Heater Inoperative (Limited)
- Passenger Seat Bolster Heater Inoperative (Limited)
- Passenger Seat Cushion Heater Inoperative (Limited)
- Rear Window Defogger Grid Inoperative
- Rear Window Defogger Switch Indicator Inoperative
- Exterior Lighting Systems
- Auto Headlamps Will Not Turn Off, Auto Headlamps Will Not Turn On
- Flash To Pass Inoperative
- Fog Lamps Will Not Turn Off
- Fog Lamps Will Not Turn On
- High Beam Headlamps Will Not Turn Off
- High Beam Headlamps Will Not Turn On
- Low Beam Headlamps Will Not Turn Off
- Low Beam Headlamps Will Not Turn On
- Park Lamps Will Not Turn Off
- Park Lamps Will Not Turn On
- Rear Fog Lamps Will Not Turn Off
- Rear Fog Lamps Will Not Turn On
- HVAC
- Instrument Cluster
- Airbag Indicator Not Operating Properly
- All Gauges Inoperative
- Brake Indicator Inoperative
- Brake Warning Indicator Always On
- Check Engine Indicator Not Operating Properly
- Check Gauges Indicator Inoperative
- Coolant Level Indicator Inoperative - Diesel Only
- Cruise On Indicator Not Operating Properly
- Fuel Gauge Not Operating Properly
- High Beam Indicator Inoperative
- Instrument Cluster Dimming Inoperative
- Low Coolant Indicator Always On - Diesel Only
- Low Fuel Indicator Inoperative
- O/D Off Indicator Inoperative
- Oil Pressure Gauge Not Operating Properly
- Seat Belt Indicator Inoperative
- Seatbelt Indicator Always On
- SKIM Indicator Inoperative
- Speedometer Not Operating Properly
- Tachometer Not Operating Properly
- Temperature Gauge Inoperative
- Trans Over Temp Indicator Inoperative
- Voltmeter Inoperative
- Water In Fuel Indicator Problems - Diesel Only
- Interior Lighting
- All Courtesy Lamps Inoperative
- Ash Tray Lamp Inoperative
- Courtesy Lamps Inoperative (Except Front Doors)
- Courtesy Lamps Inoperative From Dome Lamp Switch Only
- Courtesy Lamps Inoperative From Drivers Front Door Only
- Courtesy Lamps Inoperative From Left Rear Door Only
- Courtesy Lamps Inoperative From Liftgate
- Courtesy Lamps Inoperative From Liftgate Flip-Up Glass Only
- Courtesy Lamps Inoperative From Passenger Front Door Only
- Courtesy Lamps Inoperative From Right Rear Door Only
- Courtesy Lamps On At All Times (Except Both Front Door Courtesy Lamps If Equipped)
- Driver Door Courtesy Lamp Inoperative
- Glove Box Lamp Inoperative
- Heated Seat Switch Illumination Lamp Inoperative
- HVAC Control Illumination Lamps Inoperative
- I/P Courtesy Lamps Inop
- Liftgate Courtesy Lamp Disable Feature Inoperative
- Overhead, Rear And Liftgate Lamps Inoperative
- Passenger Door Courtesy Lamp Inoperative
- PRNDL/Transfer Case Illumination Lamps Inoperative
- Radio Illumination Lamps Inoperative
- Reading & Vanity Lamps Inoperative
- Memory Seat
- Overhead Console
- Average Fuel Economy Inaccurate Or Wrong Distance To Empty Inaccurate Or Wrong Distance To Service Inaccurate Or Wrong Elapsed Ignition On Time Inaccurate Or Wrong Instant Fuel Economy Inaccurate Or Wrong Trip Odometer Inaccurate Or Wrong
- EVIC Dimming Inoperative
- EVIC Inoperative
- Low Coolant Warning Always On - Gas Only
- Low Washer Fluid Message Always On
- Temperature Display Inaccurate Or Inoperative
- Power Door Locks/RKE Systems
- All Doors (Except Driver) Fail To Lock/Unlock
- All Doors (Except Driver) Fail To Lock
- All Doors (Except Driver) Fail To Unlock
- All Locks Inoperative From Driver Door Module
- All Locks Inoperative From Passenger Door Module
- Automatic Door Locks Inoperative
- Doors Lock With Key In Ignition & Front Door Open
- Driver Door Fails To Lock
- Driver Door Fails To Lock & Unlock
- Driver Door Fails To Unlock
- Left Rear Door Fails To Lock & Unlock
- Liftgate Lock Fails To Lock/Unlock
- Passenger Door Fails To Lock & Unlock
- Right Rear Door Fails To Lock & Unlock
- RKE Inoperative - Japan Only
- RKE Transmitter Inoperative
- RKE Transmitter Poor Range - Japan Only
- Power Mirror Systems
- Power Sunroof Systems
- Power Windows Systems
- All Power Windows Inoperative
- Driver Rear Window Inoperative From Both Switches
- Driver Rear Window Inoperative From DDM
- Driver Rear Window Inoperative From Rear Switch
- Driver Window Inoperative
- Passenger Rear Window Inoperative From Both Switches
- Passenger Rear Window Inoperative From DDM
- Passenger Rear Window Inoperative From Rear Switch
- Passenger Window Inoperative From Both Switches
- Passenger Window Inoperative From DDM
- Passenger Window Inoperative From PDM
- Vehicle Theft/Security Systems
- Alarm Trips On Its Own
- Drivers Door Key Fails To Disarm VTSS
- Hazard Lamps Fail To Flash With Alarm Tripped
- Headlamps Fail To Flash With Alarm Tripped
- Horn Fails To Sound With Alarm Tripped
- Intrusion Transceiver Module Sensitivity (Export Only)
- Theft Alarm Will Not Arm
- VTSS Does Not Trip From Drivers Door
- VTSS Does Not Trip From Hood (If Equipped)
- VTSS Does Not Trip From Left Rear Door
- VTSS Does Not Trip From Liftgate
- VTSS Does Not Trip From Liftgate Flip-Up Glass Only
- VTSS Does Not Trip From Passenger Front Door
- VTSS Does Not Trip From Right Rear Door
- VTSS Indicator Inoperative
- Verification Tests
- 45RFE/545RFE Transmission Verification Test VER 1
- Abs Verification Test VER 1
- Adjustable Pedals Verification Test VER 1
- Air Bag Verification Test VER 1
- Body Verification Test VER 1
- Powertrain Verification Test VER 1
- Road Test Verification
- Skis Verification
- Tire Pressure Verification Test
- Memory System Verification Test
- VTSS Verification Test 1A
- W5AJ400 Transmission Verification Test VER 1
- Removal & Installation
- Notes
- Adjustable Pedals Module
- Air Bag Control Module
- Body Control Module
- Center Console
- Controller Anti-Lock Brake
- Electronic Vehicle Information Center
- Memory Heated Seat Module, Heated Seat Module Or Memory Seat Module
- Overhead Console
- Powertrain Control Module
- Sentry Key Immobilizer Module
- Sun Roof Control Module
- Transmission Control Module
- Wiring Diagrams