Climate Control Panel Troubleshooting (With Navigation System)

Climate Control Panel Troubleshooting (With Navigation System)

1. Check the No.3 (7.5 A) fuse in the driver's under-dash fuse/relay box.

Is the fuse OK?

YES - Go to step 2.

NO - Replace the fuse and recheck.

2. Disconnect the climate control panel 16P connector.
3. Turn the ignition switch ON (II).




4. Measure the voltage between the No.6 terminal of the climate control panel 16P connector and body ground.

Is there battery voltage?

YES - Go to step 5.

NO - Repair open in the wire between the No.3 fuse in the driver's under-dash fuse/relay box and the climate control panel.

5. Turn the ignition switch OFF.
6. Disconnect climate control unit connectors A (16P) and B (26P).




7. Check for continuity between the following terminals of climate control panel 16P connector, and climate control unit connectors A (16P) and B (26P).

PANEL 16P UNIT 16P
No.4 No.11
No.5 No.13
No.13 No.12
PANEL 16P UNIT 26P
No.7 No.2
No.11 No.16


Is there continuity?

YES - Go to step 8

NO - Repair any open in the wire(s) between the climate control panel and climate control unit.




8. Check for continuity between the No.4, 5, 7,11 and 13 terminals of the climate control panel 16P connector and body ground individually.

Is there continuity?

YES - Repair any short to body ground in the wire (s) between the climate control panel and the climate control unit.

NO - Check for loose wires or poor connections at the climate control panel 16P connector. If the connections are good, substitute a known-good climate control panel and go to step 9.

9. Reconnect the climate control panel 16P connector.
10. Reconnect climate control unit connectors A (16P) and B (26P).
11. Turn the ignition switch ON (II), and check the climate control panel display.

Does the climate control panel display work?

YES - Repair is complete.

NO - Check for loose wires or poor connections at climate control unit connectors A (16P) and B (26P). If the connections are good, substitute a known-good climate control unit, and recheck. If the symptom/indication goes away, replace the original climate control unit.