Control Unit Trouble Codes
WARNING: This page is about a different car, the 1994 Acura Legend. However, it is still accessible from the selected car via links, so may be relevant.
CONTROL UNIT TROUBLE CODES
| Code | System Affected |
|---|---|
| 1 | Pump Motor |
| 1-2 | Pump Motor Circuit |
| 1-3 | High Pressure Leakage |
| 1-4 | Pressure Switch |
| 1-8 | Accumulator Gas Leakage |
| 2-1 | Parking Brake Switch |
| 3-1 To 3-4 | Pulser(s) |
| 4-1 To 4-8 | Wheel Speed Sensor(s) |
| 5-4 & 5-8 | Rear Speed Sensor(s) |
| 6-1 | Front Fail-Safe Relay |
| 6-4 | Rear Fail-Safe Relay |
| 7-1 & 7-2 | Front Solenoid(s) Circuit |
| 7-4 | Rear Solenoid Circuit |
NOTE:
Use only high impedance Digital Volt-Ohmmeter (DVOM) for testing.
NOTE:
DO NOT disassemble ABS pump assembly. If any part is defective (accumulator, pump motor or pressure switch), replace entire assembly.