Engine Controls - Tests W/Codes - Body Control Computer

• Introduction
• Description
• Operation
  • Body Control Computer
  • CCD Bus System
  • Compass/Temperature Module
  • Electronic Vehicle Information Center (EVIC)
  • Electronic Instrument Cluster (EIC)
  • Engine Compartment Node
  • Light Outage Module
  • Mechanical Instrument Cluster (Mic)
  • Overhead Travel Information System (OTIS)
  • Traveler Module
  • Vehicle Theft Security System (VTSS)
    • Notes
    • Initialization & Verification
    • Manual Override Mode & Tamper Alert Mode
    • Self-Diagnostic Mode
• Self-Diagnostic System
  • Notes
  • Body Control Computer Tests Directory
  • Pretest Inspection
• Diagnostic Procedure
  • Notes
  • Introduction
  • Entering On-Board Diagnostics
  • Clearing DTCS
  • Scan Tool Problems & Error Messages
• Connector Identification
  • Body Control System Connectors
• Self-Diagnostic Tests
  • Notes
  • Test 1A - Identifying Vehicle Equipment & System Problems
  • Test 1B - Identifying Diagnostic Trouble Codes
  • Test 29A - Diagnosing Chime System
  • Test 30A - Chime Inoperative At All Times
  • Test 31A - Chime Inoperative With External Lamps On
  • Test 32A - Chime Inoperative With Seat Belt Unfastened
  • Test 33A - Chime Inoperative With Key In Ignition
  • Test 34A - Diagnosing Courtesy Lamp Circuit
  • Test 35A - Courtesy Lamp System & Power Supply
  • Test 36A - One Inoperative Courtesy Lamp
  • Test 37A - Courtesy Lamp Inputs
  • Test 38A - Open Courtesy Lamp Switch Circuit
  • Test 38B - Shorted Courtesy Lamp Switch Circuit
  • Test 39A - Open Left Front Door Ajar Circuit
  • Test 39B - Shorted Left Front Door Ajar Circuit
  • Test 40A - Right Front Door Ajar Circuit
  • Test 40B - Shorted Left Front Door Ajar Circuit
  • Test 41A - Left Rear Door Ajar Circuit
  • Test 42A - Right Rear Door Ajar Circuit
  • Test 43A - Identifying Vehicle Headlamp System
  • Test 44A - Diagnosing Headlamp Time Delay
  • Test 45A - Headlamps Will Not Turn Off
  • Test 46A - Headlamp Time Delay Will Not Turn On
  • Test 46B - Headlamp Time Delay Will Not Turn On
  • Test 47A - Identifying Headlamp System Problems (With Auto Headlamp System)
  • Test 48A - Headlamp & Parking Lamps Inoperative In Auto Mode
  • Test 48B - Auto Headlamp Sun Sensor Input Circuit
  • Test 49A - Headlamps Inoperative In Auto Mode
  • Test 50A - Parking Lamps Inoperative In Auto Mode
  • Test 51A - Headlamps & Parking Lamps Do Not Turn Off
  • Test 52A - Parking Lamps Will Not Turn Off
  • Test 53A- Inoperative Illuminated Entry
  • Test 54A - Identifying Instrument Cluster Problems
  • Test 55A - Instrument Cluster Gauge Problem
  • Test 56A - All Gauges Inoperative
  • Test 56B - All Gauges Inoperative
  • Test 57A - Instrument Cluster Sense Circuits
  • Test 57B - Instrument Cluster Sense Circuits
  • Test 58A - Identifying Warning Lamp Problems
  • Test 58B - Instrument Cluster Printed Circuit Board
  • Test 59A - Communication With Transmission Control Module
  • Test 60A - Diagnosing Instrument Cluster Illumination Problem
  • Test 60B - Parking Lamp Switch Output Circuit Short To Ground
  • Test 60C - Parking Lamp Switch Output Circuit Short To
  • Test 61A - Parking Lamp Switch Power Supply
  • Test 62A - Open Panel Lamps Driver Circuit
  • Test 63A - Diagnosing Parking Lamp Switch
  • Test 64A - Parking Lamp Switch Output Circuit Short To Ground
  • Test 65A - Faulty Temperature Gauge/Lamp
  • Test 66A - Faulty Gauge
  • Test 67A - Fuel Gauge/Lamp Operation Full At All Times
  • Test 68A - Fuel Gauge/Lamp Empty At All Times
  • Test 68B - Fuel Gauge/Lamp Empty At All Times
  • Test 68C - Fuel Gauge/Lamp Operation
  • Test 69A - Faulty Speedometer
  • Test 70A - Oil Pressure Switch Sense Circuit Short To Ground
  • Test 70B - Open Oil Pressure Switch Sense Circuit
  • Test 71A - Seat Belt Switch Circuit Short To Ground
  • Test 72A - Open Seat Belt Switch Circuit
  • Test 73A - Diagnosing Parking Brake Warning Lamp
  • Test 73B - Open Brake Fluid Level Switch Circuit
  • Test 73C - Open Parking Brake Switch Circuit
  • Test 73D - Open Parking Brake Switch Circuit
  • Test 73E - Shorted Parking Brake Circuit
  • Test 74A - Gauges Do Not Go To Zero With Key Off
  • Test 75A - Identifying Key-In Lamp Problems
  • Test 76A - Inoperative Key-In Lamp
  • Test 77A - Key-In Lamp On Constantly
  • Test 78A - Diagnosing Message Center
  • Test 79A - Washer Fluid Lamp Circuit
  • Test 79B - Inoperative Washer Fluid Lamp
  • Test 80A - Door Ajar Lamp Circuit
  • Test 81A - Diagnosing Overhead Travel Information System
  • Test 82A - Blank Screen Or No Response Condition On OTIS
  • Test 83A - OTIS Ambient Temperature Sensor
  • Test 84A - OTIS Ambient Temperature Sensor
  • Test 85A - Testing OTIS Mileage & Distance Functions
  • Test 86A - Testing OTIS Switches
  • Test 87A - Auto Door Lock Problem
  • Test 88A - All Doors Fail To Lock & Unlock From Any Switch
  • Test 88B - All Doors Fail To Lock & Unlock From Any Switch
  • Test 88C - Shorted Switch Circuit
  • Test 89A - One Door Fails To Lock & Unlock From Any Switch
  • Test 90A - All Doors Fail To Lock & Unlock From One Switch
  • Test 91A - All Doors Fail To Lock From Any Switch
  • Test 92A - All Doors Fail To Unlock From Any Switch
  • Test 93A - Repairing Inoperative Door Lock Inhibit Switch
  • Test 94A - Diagnosing Automatic Speed Sensitive Door Locks
  • Test 95A - Identifying Power Door Lock & Remote Keyless Entry
  • Test 96A - Left Front Door Fails To Lock & Unlock From Any Switch
  • Test 97A - Left Front Door Lock Problem
  • Test 98A - Left Front Door Unlock Problem With Remote Keyless
  • Test 99A - All Doors (Except Left Front) Fail To Lock & Unlock
  • Test 100A - All Doors (Except Left Front) Fail To Lock
  • Test 101A - All Doors (Except Left Front) Fail To Unlock
  • Test 102A - Remote Keyless Entry Problem
  • Test 103A - Diagnosing Wiper System Problems
  • Test 104A - Wiper Switch, Controller & Power Supply
  • Test 104B - Wiper Switch Mode Sense Circuit
  • Test 104C - Wiper Motor Output Circuit Short
  • Test 104D - On/Off (Intermittent) Wiper Motor Relay & Control Circuit
  • Test 104E - Inoperative Wiper Motor Low Speed
  • Test 104F - Wiper Switch Power Supply
  • Test 104G - Wiper Switch Power Supply Short To Ground
  • Test 105A - Wiper Motor High Speed Operation
  • Test 106A - Wiper Motor Low Speed Operation
  • Test 107A - Wiper Motor Intermittent Speed Operation
  • Test 108A - Open Park Switch Sense Circuit
  • Test 109A - Washer Pump Operation
  • Test 110A - Wipers Operate In High Speed Only
  • Test 111A - Wipers Operate Constantly With Ignition On
  • Test 112A - Testing Fused Ignition Switch Output To Body
  • Test 113A - Body Control Module (BCM) No Response Condition
  • Test 114A - Powertrain Control Module No Response Condition
  • Test 115A - Repairing Scan Tool Blank Screen
  • Test VER-1 - Verification Procedure
• Vehicle Communications Tests
  • Notes
  • Test 1A - Trouble Codes
  • Test 2A - Blank Scan Tool Message Screen
  • Test 3A - Ram Test Failure
  • Test 4A - Cartridge Error
  • Test 5A - Key Pad Test Failure
  • Test 6A - Low Or High Battery
  • Test 7A - Bus Short To Battery
  • Test 7B - Bus Short To Battery
  • Test 7C - Bus Short To Battery
  • Test 7D - Bus Short To Battery
  • Test 7E - Bus Short To Battery
  • Test 7F - Bus Short To Battery
  • Test 7G - Bus Short To Battery
  • Test 7H - Bus Short To Battery
  • Test 8A - Bus Short To 5 Volts
  • Test 8B - Bus Short To 5 Volts
  • Test 8D - Bus Short To 5 Volts
  • Test 8E - Bus Short To 5 Volts
  • Test 8F - Bus Short To 5 Volts
  • Test 8G - Bus Short To 5 Volts
  • Test 8H - Bus Short To 5 Volts
  • Test 9A - Bus Short To Ground
  • Test 9B - Bus Short To Ground
  • Test 10A - Bus (+) & Bus (-) Shorted Together
  • Test 11A - No Termination
  • Test 11C - No Termination
  • Test 12A - Bus Bias Level Or Bus (+/-) Open
  • Test 12C - Bus Bias Level Or Bus (+/-) Open
  • Test 12G - Bus Bias Level Or Bus (+/-) Open
  • Test 13A - No Bus Bias
  • Test 13C - No Bus Bias
  • Test 13K - No Bus Bias
  • Test 14A - Not Receiving Bus Messages Correctly
  • Test VER-1 - Verification Procedure