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EC-372 < DTC/CIRCUIT DIAGNOSIS > [VQ35DE] P1564 ASCD STEERING SWITCH 1. Turn ignition switch ON. 2. Select “MAIN SW”, “CANCEL SW”, “RESUME/ACC SW” and “SET SW” in “DATA MONITOR” mode with 3. Check each item indication under the following conditions. Without CONSULT-III 1. Turn ignition switch ON. 2. Check the voltage between ECM harness connector terminals under the following conditions. Is the inspection result normal? YES >> GO TO 8. NO >> GO TO 3. 3. CHECK ASCD STEERING SWITCH GROUND CIRCUIT FOR OPEN AND SHORT 1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. 3. Disconnect combination switch harness connector. 4. Check the continuity between combination switch and ECM harness connector. 5. Also check harness for short to ground and short to power. Is the inspection result normal? YES >> GO TO 5. NO >> GO TO 4. 4. DETECT MALFUNCTIONING PART Check the following. >> Repair open circuit, short to ground or short to power in harness or connectors. Monitor item Condition Indication MAIN SW MAIN switch Pressed ON Released OFF CANCEL SW CANCEL switch Pressed ON Released OFF RESUME/ACC SW RESUME/ACCEL- Pressed ON Released OFF SET SW SET/COAST switch Pressed ON Released OFF ECM Condition Voltage (V) Con- nector + – Terminal Terminal E16 85 (ASCD steering switch signal) 92 (ASCD steering switch ground) MAIN switch: Pressed Approx. 0 CANCEL switch: Pressed Approx. 1 SET/COAST switch: Pressed Approx. 2 RESUME/ACCELERATE switch: Pressed Approx. 3 All ASCD steering switches: Released Approx. 4 Combination switch ECM Continuity Terminal Connector Terminal 16 E16 92 Existed |