NO.5 ABS WARNING LIGHT STAYS ON 4 S OR MORE WHEN THE IGNITION SWITCH IS TURNED TO THE ON POSITION

#
NO.5 ABS WARNING LIGHT STAYS ON 4 S OR MORE WHEN THE IGNITION SWITCH IS TURNED TO THE ON POSITION

B3E040367650W09

5 | ABS warning light stays on 4 s or more when the ignition switch is turned to the ON position.
[TROUBLESHOOTING HINTS] • ABS CM detects ABS system malfunction.

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | INSPECT WIRING HARNESS BETWEEN ABS HU/CM AND DLC-2 FOR CONTINUITY AND SHORT CIRCUIT • Perform DTC inspection. • Is any error message displayed regarding communication between ABS HU/CM and the WDS or equivalent? | Yes | If the communication error message is displayed even after inspecting according to the procedures displayed in the WDS or equivalent, go to Step 4.
No | Go to the next step.
2 | INSPECT FOR DTCs IN ABS HU/CM • Have DTCs been stored in memory? | Yes | Perform the applicable DTC inspection. (See DTC Table.)
No | Inspect the instrument cluster If the instrument cluster is normal, go to the next step. If the instrument cluster has a malfunction, repair the instrument cluster, go to the next step.
3 | INSPECT WIRING HARNESS BETWEEN ABS HU/CM AND DLC-2 FOR CONTINUITY • Disconnect the ABS HU/CM connector. • Is there continuity between connector terminal H, L and DLC-2? | Yes | Go to the next step.
No | Repair the wiring harness between the ABS HU/CM and DLC-2.
*4 | INSPECT WIRING HARNESS BETWEEN ABS HU/CM AND DLC-2 FOR SHORT TO POWER SUPPLY • Is the voltage approx. 12 V at connector terminal H, L? | Yes | Repair the wiring harness between the ABS HU/CM and DLC-2.
No | Go to the next step.
5 | INSPECT WIRING HARNESS BETWEEN ABS HU/CM AND DLC-2 FOR SHORT TO GROUND Is there continuity between connector terminal H, L and ground? | Yes | Repair the wiring harness between the ABS HU/CM and DLC-2.
No | Replace the ABS HU/CM (communication circuit malfunction in ABS HU/CM). (See ABS HU/CM REMOVAL/INSTALLATION.)

• When performing an asterisked (*) troubleshooting inspection, slightly shake the wiring harness and connectors while performing the inspection to discover whether poor contact points are the cause of any intermittent malfunction. If there is a problem, verify that the connectors, terminals and wiring harness are connected correctly and undamaged.