Page 160 - Workshop Manual - Aumark (BJ1051)

04-16
Diagnose- ABS system

Malfunction Symptoms Table

1. If a malfunction persists while a normal code is displayed during DTC check, you
should check circuits for symptoms according to the order given in the following table
and then enter relevant troubleshooting pages to troubleshoot the problem.

Tip:
When replacing ABS control unit, solenoid valves, or sensors, turn ignition switch OFF and
disconnect battery negative cable.

Use of the table below will help you find causes of problems. The SNs show possibilities sorting of
causes of problems. Check each part according to this order and replace as needed.

Symptom Suspected area Refer to
1. Make sure DTC output is system Chapter 04 Diagnosis-ABS, ABS
normal code. Does Not Work
2. Power supply and ground circuit
ABS does not work. 3. Brake line for leakage.
4. ABS control unit
04
1. Make sure DTC output is system Chapter 04 Diagnosis-ABS, ABS
normal code. Can Not Work Effectively
2. Front wheel speed sensor circuit
3. Rear wheel speed sensor circuit
4. ABS solenoid valve
ABS can not work effectively.
5. Brake line for leakage, breakage,
deformation, etc.
6. ABS control unit

1. ABS malfunction indicator light Chapter 04 Diagnosis-ABS, ABS
ABS malfunction indicator light
always lighted up. circuit Malfunction Indicator Light Always
2. ABS control unit Lighted Up
1. ABS malfunction indicator light Chapter 04 Diagnosis-ABS, ABS
ABS malfunction indicator light does circuit Malfunction Indicator Light Does
not come on.
2. ABS control unit Not Come On
Chapter 04 Diagnosis-ABS, ASR
1. ASR (ABS) blink code indicator
ASR (ABS) blink code indicator light circuit (ABS) Blink Code Indicator Light
light always lighted up. Always Lighted Up
2. ABS control unit
Chapter 04 Diagnosis-ABS, ASR
1. ASR (ABS) blink code indicator
ASR (ABS) blink code indicator light circuit (ABS) Blink Code Indicator Light
light does not come on. Does Not Come On
2. ABS control unit

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