Section 20 (Body Computer Module)
WARNING: This page is about a different car, the 1988 Cadillac Allante and 1987 Cadillac Allante. However, it is still accessible from the selected car via links, so may be relevant.
- Description
- Operation
- Component Locations
- Trouble Shooting
- Self-Diagnostic System Check
- Self-Diagnostic System
- Input Tests
- Notes
- Bi03: Left Door Ajar
- Bi04: Right Door Ajar
- Bi08: Low Refrigerant Pressure (1987)
- Bi08: Low Refrigerant Pressure (1988)
- Bi09: Washer Fluid Level
- Bi10: Low Coolant Level
- Bi21: Brake Fluid Level
- Bi24: PRND321 Reverse Switch
- Bi30: Time/Temp Switch
- Bi41: Coolant Fans Feedback
- Bi51: Generator Feedback
- Bi60: Theft Alarm
- Bi61: Door Unlock Switch
- Bi62: Soft Top Up
- Bi63: Hard Top Connected
- Bi64: Low Oil Level
- Bi90: Right Turn Switch
- Bi91: Left Turn Switch
- Bi92: Headlights Switch
- Bi93: Hi Beam
- Bi94: Anti-Lock Brake Failure
- Bi95: Brake Switch
- Diagnostic Tests
- DTC B119: Twilight Photocell Circuit
- DTC B120: Twilight Delay Switch Pot Circuit
- DTC B120 & B122: Twilight Delay & Panel Dimming
- DTC B124: Vehicle Speed Sensor (VSS) Circuit Problem
- DTC B334: Loss Of ECM Serial Data
- DTC B335: Loss Of CCDIC Serial Data
- DTC B336: Loss Of IPC Serial Data
- DTC B337: Loss Of HVAC Programmer Data
- DTC B420: BCM Output Driver No. 1 Failure
- DTC B421: BCM Output Driver No. 2 Failure
- DTC B481: Anti-Lock Fault
- DTC B552: Keep Alive Memory Error
- DTC B556: Odometer Ee Prom Error
- DTC L010: Redundant TAILLAMP Relay Failure
- DTC L011: Redundant Headlamp Relay Failure
- DTC L110: Left Switch Pod (LSP) Communication Failure
- DTC L202: OSM No. 2 Communications Problem
- DTC L203: OSM No. 3 Communication Problem
- DTC L204: OSM No. 4 Communications Problem
- DTC L205: OSM No. 5 Communications Problem
- DTC L206: OSM No. 6 Communications Problem
- DTC L207: OSM No. 7 Communications Problem
- DTC L208: OSM No. 8 Communications Problem
- DTC L209: OSM No. 9 Communications Problem
- DTC L210: OSM No. 10 Communications Problem
- System Tests
- Notes
- Test A: Retained Accessory Power (Rap) Feature Does Not Operate Any Accessories
- Test B: Power Windows & Trunk Release Will Not Operate When Retained Accessory Power (Rap) Feature Is Activated
- Test C: Radio & Wipers Will Not Operate When Retained Accessory Power (Rap) Feature Is Activated
- Test D: Power Windows & Trunk Release Will Not Operate With Ignition In Run Or With Retained Accessory Power (Rap) Feature Activated
- Removal & Installation
- Connector Identification
- Wiring Diagrams