STEP 1.Using scan tool MB991958, diagnose the CAN bus line.
STEP 2. Diagnostic trouble code recheck after resetting CAN bus lines
STEP 4. Charging system check
STEP 5. Voltage measurement at the A-03 ASC-ECU connector
STEP 6. Connector check: A-03 ASC-ECU connector
Is the check result normal?
The open or short circuit may be present in the power supply circuit. Repair the wiring harness between the A-03 ASC-ECU connector terminal No.25 and fusible link No.27. Repair the defective connector.
STEP 7. Resistance measurement at A-03 ASC-ECU connector
STEP 8. Connector check: A-03 ASC-ECU connector
Is the check result normal?
An open circuit may be present in the ground circuit. Repair the wiring harness between the A-03 ASC-ECU terminal No.13 and body ground, and between the A-03 ASC-ECU terminal No.38 and body ground. Repair the defective connector.
STEP 9. Check whether the DTC is stored again.
(1) Erase the DTC.
(2) Turn the ignition switch to the "LOCK" (OFF) position.
(3) Turn the ignition switch to the "ON" position.
(4) Drive the vehicle at 12mph (20 km/h) or higher.note | The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12mph (20 km/h) or higher. |
Is DTC C1608 stored?
Replace the hydraulic unit (integrated with ASC-ECU) (Refer to ). Then go to Step 10. Go to Step 11.
STEP 10. Check whether the DTC is stored again.
(1) Erase the DTC.
(2) Turn the ignition switch to the "LOCK" (OFF) position.
(3) Turn the ignition switch to the "ON" position.
(4) Drive the vehicle at 12mph (20 km/h) or higher.note | The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12mph (20 km/h) or higher. |
Is DTC C1608 stored?
Return to Step 1. Go to Step 11.
STEP 11. Check the other DTCs.
(1) Erase the DTC.
(2) Turn the ignition switch to the "LOCK" (OFF) position.
(3) Turn the ignition switch to the "ON" position.
(4) Drive the vehicle at 12mph (20 km/h) or higher.note | The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12mph (20 km/h) or higher. |
Is any DTC stored?
Carry out the applicable troubleshooting for the DTC (Refer to ). The procedure is complete.