1. Check for continuity between the millimeter wave radar unit 5P connector No. 5 terminal and body ground.

Is there continuity?

YES | - | Repair a short to ground in the wire between the adaptive cruise control (ACC) unit and the millimeter wave radar unit.■
NO | - | Check for loose or poor connections. If OK, replace the adaptive cruise control (ACC) unit , then go to Step 18 .

1. Clear the DTCs with the HDS.

1. Turn the ignition switch ON (II).

1. Watch the adaptive cruise control (ACC) indicator.

Do the indicators come on?

YES | - | Go to Step 21 .
NO | - | Intermittent failure, the system is OK at this time.■

1. Check for DTCs with the HDS.

Is DTC 61 indicated?

YES | - | Check for loose or poor connections. If OK, Replace the millimeter wave radar unit. After replacement, do the millimeter wave radar unit aiming. ■
NO | - | Troubleshoot the indicated DTC(s). If there are no DTCs, the system is OK at this time.■