CHECK AMBIENT SENSOR POWER SUPPLY.

1) Turn the ignition switch to OFF.

2) Disconnect the ambient sensor harness connector.

3) Turn the ignition switch to ON.

4) Measure voltage between the ambient sensor harness connector terminal and chassis ground.

Connector & terminal

(F78) No. 1 (+) — Chassis ground (−):

QUESTION

Is the voltage 4 V or more?

Yes No

Check the harness for a open or short between the fuse and clock.