Read Faults
If there are no fault messages present, perform TEST 23A.
In some instances the cause of one fault message may trigger the setting of an additional fault message. If multiple fault messages appear on the DRBII when reading fault, fault repairs must be performed in the order in which they are displayed in the chart below. In only one fault has occurred, perform the indicated test for that fault message.
NOTE:
If a fault has occurred more than 2 key cycles ago, perform the Verification Test procedure (TEST VER-1) before any attempt is made to diagnose that particular fault message.
ALB READING FAULT MESSAGES
| Message | Go To: |
|---|---|
| CAB FAULT | TEST 2A |
| MODULATOR FAULT | TEST 3A |
| SOLENOID UNDERVOLTAGE FAULT | TEST 4A |
| LOW FLUID/PARKING BRAKE FAULT | TEST 5A |
| SYSTEM RELAY FAULT | TEST 6A |
| LOW ACCUMULATOR FAULT | TEST 7A |
| PRIMARY PRESSURE/DELTA PRESSURE FAULT | TEST 17A |
| BOOST PRESSURE FAULT | TEST 8A |
| RR WHEEL SPEED SENS CONTINUITY FAULT | TEST 9A |
| LR WHEEL SPEED SENS CONTINUITY FAULT | TEST 10A |
| RF WHEEL SPEED SENS CONTINUITY FAULT | TEST 11A |
| LF WHEEL SPEED SENS CONTINUITY FAULT | TEST 12A |
| RIGHT REAR WHEEL SPEED SENSOR FAULT | TEST 13A |
| LEFT REAR WHEEL SPEED SENSOR FAULT | TEST 14A |
| RIGHT FRONT WHEEL SPEED SENSOR FAULT | TEST 15A |
| LEFT FRONT WHEEL SPEED SENSOR FAULT | TEST 16A |
| ANTILOCK LAMP FAULT | TEST 18A |
| ANTILOCK LAMP FAULT | TEST 19A |
| EXCESS DECAY FAULT | TEST 20A |