STEP 1. Resistance measurement at camera-ECU connector (GND terminal).
(1) Disconnect the connector, and measure at the wiring harness side.
(2) Measure the resistance between the camera-ECU connector (GND terminal) and body ground.OK: The resistance should be 2 ohms or less
Is the check result normal?
Go to Step 2. Repair the ground circuit.
STEP 2. Voltage measurement at camera-ECU connector (+B terminal).
(1) Disconnect the connector, and measure at the wiring harness side.
(2) Check the voltage between the camera-ECU connector (+B terminal) and body ground.OK: The voltage should measure approximately 12 volts (battery positive voltage)
Is the check result normal?
: Go to Step 4. Go to Step 3.
STEP 3. Check of short to ground, and open circuit in +B line between camera-ECU and fusible link.
STEP 4. Voltage measurement at camera-ECU converter connector (ACC terminal).
(1) Disconnect the connector, and measure at the wiring harness side.
(2) Check the voltage between camera-ECU connector (ACC terminal) and body ground.OK: The voltage should measure approximately 12 volts (battery positive voltage)
Is the check result normal?
Go to Step 6. Go to Step 5.
STEP 5. Check of short to ground, and open circuit in ACC line between fusible link and camera-ECU connector.
STEP 6. Retest the system.