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AUTO-CRUISE CONTROL TSB Revision ENGINE AND EMISSION CONTROL 17-59 CIRCUIT OPERATION TECHNICAL DESCRIPTION (COMMENT) TROUBLESHOOTING HINTS • Malfunction of the park/neutral position switch. • Damaged harness or connector. • Malfunction of the auto-cruise control-ECU. DIAGNOSIS Required Special Tool: • MB991223: Harness Set STEP 1. Check the output circuit voltage at park/neutral 41. (2) Turn the ignition switch to "ON" position. backprobing. • Voltage should be battery positive voltage. • Voltage should be 0.5 volts or less. (4) Turn the ignition switch to "LOCK" (OFF) position. Q: Is the voltage within specifications? YES : Check that the malfunction is eliminated. If the malfunction is eliminated, replace the auto- .) Then check that the malfunction is eliminated. NO : Go to Step 2. AC003599 AB CONNECTOR: C-28 1 2 3 4 5 6 7 8 9 10 AC002393 B-41 CONNECTOR AD |