Check for continuity between the adaptive cruise control (ACC) unit 20P connector No. 1 terminal and adaptive cruise control (ACC) relay 5P connector No. 1 terminal. Is there continuity?
YES | - | Check for loose or poor connections. If OK, replace the adaptive cruise control (ACC) unit. ■
NO | - | Repair an open in the wire between the adaptive cruise control (ACC) unit and the adaptive cruise control (ACC) relay.■
Check the brake light with the brake pedal pressed. Are the bulbs OK?
YES | - | Intermittent failure. The system is OK at this time. Check for loose or poor connections.■
NO | - | Go to Step 44 .
Do the brake pedal test and adjustment. Test the brake pedal position switch. Check the brake lights with the brake pedal pressed. Do the brake lights come on?
YES | - | Intermittent failure. The system is OK at this time. Check for loose or poor connections.■
NO | - | Repair an open in the BLK wire or poor ground (G701).■