CHECK A/C CONTROL UNIT POWER CIRCUIT.

1) Remove the A/C control panel.

2) Disconnect the A/C control panel harness connector.

3) Measure the voltage between A/C control panel harness connector terminal and chassis ground after turning the ignition switch to ACC.

Connector & terminal

(i88) No. 15 (+) — Chassis ground (−):

QUESTION

Is the voltage 10 V or more?

Yes No

Check for open or short circuit in the harness between A/C control panel and fuse.