DTC Troubleshooting: 30
  1. Check for continuity between the ACC unit 20P connector No. 1 terminal and relay circuit board 10P connector No. 8 terminal.
Is there continuity?
YES -
Check for loose or poor connections. If the connections are OK, update the ACC unit, then recheck. If the ACC unit was already updated, replace the ACC unit. ■
NO -
Repair an open in the wire between the ACC unit and the relay circuit board.■
  1. Do the brake pedal adjustment.
  1. Test the brake pedal position switch.
  1. 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 (G901). ■