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AUTO-CRUISE CONTROL TSB Revision ENGINE AND EMISSION CONTROL 17-57 . CIRCUIT OPERATION . TECHNICAL DESCRIPTION (COMMENT) . TROUBLESHOOTING HINTS • Malfunction of the stoplight switch. • Damaged harness or connector. • Malfunction of the auto-cruise control-ECU. DIAGNOSIS Required Special Tool: • MB991223: Harness Set STEP 1. Check if the stoplight illuminates. YES : Go to Step 8. STEP 2. Check the 12-Volt supply circuit voltage at the harness side. (2) Measure the voltage between terminal 2 and ground. YES : Go to Step 5. AC103104AD CONNECTOR: C-89 CONNECTOR 1 2 3 4 ACX01922AC STOPLIGHT SWITCH |