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CHASSIS ELECTRICAL – IGNITION SWITCH, ENGINE IMMOBILISER 54A-6 Inspection Procedure 4 Checking the power supply and earth circuit system of the immobiliser ECU Measure at the immobiliser ECU connector D-54 OK: Battery voltage (2) Voltage between 3 & body earth OK: Connectivity Check connectors C-54 Check connectors: B-19X, C-23, C-22, C-54 Check the harness between the engine control relay and the Confirm the trouble symptoms Check the harness between the immobiliser ECU and Confirm the trouble symptoms Immobiliser ECU check Terminal voltage check table Terminal No. Signal Check conditions Terminal voltage 3 Immobiliser ECU earth At all times 0V 5 Engine ECU - - 7 Immobiliser ECU power At all times Battery voltage 10 Ignition key ring aerial input - - 11 Ignition key ring aerial output - - ACX01564AB (2) NG (1) NG OK NG NG Repair Repair OK NG NG |