CHECK A/C CONTROL UNIT POWER CIRCUIT.

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

Connector & terminal

(i88) No. 32 (+) — 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.