( TL19E00G10500016685FAAT00 )

Climate Control-Navigation Communication Line Circuit Troubleshooting

1. Operate the climate control system in several modes.

Is the climate control system OK?

YES | - | Go to Step 2 .
NO | - | Do the self-diagnostic function with the HDS or the climate control unit. ■

1. Do the Navi system link.

Is the Air-Con or TALK/BACK icon red?

YES

-

- If Air-con icon is red, go to Step 3 .
- If TALK/BACK icon is red, go to ‘‘voice control does not work/respond'' in the navigation system symptom troubleshooting. ■

NO | - | Go to Step 9 .

1. Turn the ignition switch to LOCK (0).

1. Disconnect navigation unit connector B (32P).

1. Disconnect climate control unit connector B (12P).

1. Check for continuity between the following terminals of climate control unit connector B (12P) and navigation unit connector B (32P).

   12P: | 32P:
   No. 7 | No. 20
   No. 9 | No. 21
   No. 8 | No. 4

Is there continuity?

YES | - | Go to Step 7 .
NO | - | Repair open in the wire(s) between the climate control unit and the navigation unit.■