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TROUBLESHOOTING ACTIVE STABILITY CONTROL SYSTEM (ASC) 35C-21 STEP 4. Voltage measurement at the A-58 ASC- AC606869 AC606869CY ASC-ECU MB991997 Check harness A-58 ASC-ECU (1) Disconnect the ASC-ECU connector, connect special tool ASC check harness (MB991997) to (2) Turn the ignition switch to the ON position. speed sensor (LH) power supply terminal (signal OK: 1 V or less Q: Is the check result normal? YES : Go to Step 5. NO (Not normal at the terminal No.45 or 46) : Go to Step 6. STEP 5. Resistance measurement at A-58 ASC- AC606869CZ ASC-ECU MB991997 Check harness A-58 ASC-ECU (1) Disconnect the ASC-ECU connector, connect special tool ASC check harness (MB991997) to (2) Measure the resistance between the front wheel speed sensor (LH) power supply terminal (signal OK: No continuity Q: Is the check result normal? YES : Go to Step 8. NO (Not normal at the terminal No.45 or 46) : Go to Step 6. STEP 6. Connector check: A-58 ASC-ECU Q: Is the check result normal? YES : Go to Step 7. NO : Repair the defective connector. Then go to |