Section 18 (Anti-Lock Brake System)
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 1991 Pontiac Grand Prix, 1991 Oldsmobile Cutlass Supreme, 1991 Buick Regal, 1990 Pontiac Grand Prix, and 1990 Oldsmobile Cutlass Supreme. However, it is still accessible from the selected car via links, so may be relevant.
- Description
- Operation
- Safety Precautions
- Bleeding Brake System
- Diagnosis & Testing
- Tools & Equipment Required
- Hydraulic System Diagnosis Chart
- Pre-Diagnosis Inspection
- Symptom Testing
- Abs-III Function Check "A": System Function Check
- Abs-III Function Check "B": Hold Function Check
- Abs-III Function Check "C": Low Or No Boost Pressure Check
- Abs-III Function Check "D": Pump-Run Time Excessive
- Abs-III Function Check "E": Pump Run Time Insufficient
- Abs-III Function Check "F": External Leak Inspection
- Abs-III Function Check "G": Internal Fluid Leak To FRONTCHAMBER
- Abs-III Snapshot
- Enhanced Diagnostics
- INTERMITTENTS
- Abs-III Diagnostics Cannot Be Entered
- Code A001: Anti-Lock Warning Indicator Open Or Shorted To Ground
- Code A002: Anti-Lock Warning Indicator Shorted To Battery Or Diode Shorted
- Code A003, Anti-Lock Brake Diode Open Or Shorted To Ground
- Code A004, Enable Relay Or Solenoid Fault Detected
- Code A005, Front Enable Relay Open, Contacts Open, Fuse Open
- Code A006: Front Enable Coil Shorted To Battery
- Code A007: Rear Enable Relay Open, Contacts Open, Fuse Open
- Code A008: Rear Enable Coil Shorted To Battery
- Code A009: Right Front Hold Solenoid Open Or Shorted To Ground
- Code A010: Left Front Hold Solenoid Open Or Shorted To Ground
- Code A011: Rear Hold Solenoid Open Or Shorted To Ground
- Code A012: Right Front Release Solenoid Open Or Shorted To Ground
- Code A013: Left Front Release Solenoid Open Or Shorted To Ground
- Code A014: Rear Release Solenoid Open Or Shorted To Ground
- Code A015: One Or More Front Solenoids Shorted
- Code A016, One Or More Rear Solenoids Shorted
- Code A017, Right Front Hold Solenoid Shorted To Battery
- Code A018: Left Front Hold Solenoid Shorted To Battery
- Code A019: Rear Hold Solenoid Shorted To Battery
- Code A020: Right Front Release Solenoid Shorted To Battery
- Code A021: Left Front Release Solenoid Shorted To Battery
- Code A022: Rear Release Solenoid Shorted To Battery
- Code A023: Right Front Release Solenoid Energized Too Long
- Code A024: Left Front Release Solenoid Energized Too Long
- Code A025: Rear Release Solenoid Energized Too Long
- Code A026: Right Front Hold Solenoid Energized Too Long
- Code A027: Left Front Hold Solenoid Energized Too Long
- Code A028: Rear Hold Solenoid Energized Too Long
- Code A030: More Than One Speed Sensor Open Or Shorted To Ground
- Code A031: Pump Motor Feedback Circuit Open
- Code A032: Open Brake Switch Or Hydraulic Leak
- Code A033: Brake Switch Open
- Code A034: Brake Switch Shorted
- Code A035: Pump Motor Runs Too Long
- Code A036: Pump Motor Will Not Run
- Code A037: Front Enable Relay Coil Shorted To Ground
- Code A038: Rear Enable Relay Coil Shorted To Ground
- Code A039: Front Enable Relay Open Or Contacts Shorted To Battery
- Code A040: Rear Enable Relay Contacts Shorted To Battery
- Code A041: Brake Switch Circuit Open
- Code A042: Low Brake Pressure Circuit Open
- Code A043: System Voltage Is Low
- Code A044: Right Front Wheel Speed Is Zero
- Code A045: Left Front Wheel Speed Is Zero
- Code A046: Right Rear Wheel Speed Is Zero
- Code A047: Left Rear Wheel Speed Is Zero
- Code A048: Excessive Right Front Wheel Speed Acceleration
- Code A049: Excessive Left Front Wheel Speed Acceleration
- Code A050: Excessive Right Rear Wheel Speed Acceleration
- Code A051: Excessive Left Rear Wheel Speed Acceleration
- Code A052: Anti-Lock Brake Controller Calibration Error
- Code A054: Rear Enable Relay Circuit Open
- Code A055: Anti-Lock Brake Controller Voltage Fault
- Code A056: Open Brake Switch Or Hydraulic Leak
- Code A059: Low Brake Pressure During Abs Stop
- Code A060: Anti-Lock Brake Controller Internal Fault
- Code A062: Low Accumulator Pre-Charge
- Code A063: Both Rear Wheel Speed Sensors Open
- Removal & Installation
- Adjustments
- Wiring Diagram