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STEP 10. Voltage measurement at the A-02 ASC-ECU ZC601292 0003 ASC-ECU MB991997 Check harness A-02 ASC-ECU (1) Disconnect the ASC-ECU connector, connect special tool (2) Turn the ignition switch to the ON position. (3) Measure the voltage between the wheel speed sensor circuit OK: Approximately battery voltage Q:Is the check result normal? YES: Go to Step 13. NO: Go to Step 11. STEP 11. Connector check: A-02 ASC-ECU connector, Q:Is the check result normal? YES: Go to Step 12. NO: Repair the defective connector. STEP 12. Wiring harness check between A-02 ASC-ECU ⦆ Check for open circuit in wheel speed sensor <RL> circuit Q:Is the check result normal? YES: Replace the wheel speed sensor. NO: Repair the wiring harness. STEP 13. Check for wheel speed sensor as a single unit Q:Is the check result normal? YES: Go to Step 14. NO: Replace the wheel speed sensor. STEP 14. Check whether the diagnostic trouble code is (1) Erase the diagnostic trouble code. (2) Drive the vehicle at 12mph (20 km/h) or more. NOTE: The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12mph (20 km/h) or ACTIVE SKID CONTROL SYSTEM (ASC) 35C-27 DIAGNOSIS |