CHECK A/C ON SIGNAL.

1) Turn the ignition switch to OFF.

2) Connect the A/C relay and all disconnected connectors.

3) Start the engine and turn the A/C switch to ON.

4) Turn the temperature control dial at maximum cool position.

5) Measure the voltage between auto A/C control module harness connector terminal and chassis ground.

Connector & terminal

(i88) No. 36 (+) — Chassis ground (−):

QUESTION
Is the voltage 5.5 V or more?
Yes	No
	Replace the auto A/C control module.