Component Tests and General Diagnostics

A/C CUTOFF SYSTEM INSPECTION
1. Position the vehicle on a chassis roller and start the engine.
2. (MTX) Shift the transaxle into other than Neutral and release the clutch pedal.
(ATX) Shift the selector lever into other than P and N.
3. Turn the A/C switch and the fan switch on.
4. Fully open the throttle valve. Then, 3-6 seconds after, check if the operation sound of the A/C compressor electromagnetic clutch is heard.
5. If the operation sound if not heard, do as follows.

New Generation Star (NGS) Tester Connected To DLC-2:

a. Connect the Special Service Tools (SST)s New Generation Star (NGS) tester.
b. Turn the A/C relay from OFF to ON by using the SIMULATION TEST function and check for the operation sound of the relay.
I If the operation sound is heard, check the following.
^ PCM terminal voltage
^ Load/no load distinction signal
^ Closed throttle position signal

II. If the operation sound is not heard, check the following.
^ A/C relay
^ Open circuit in wiring harnesses and connector (Main relay - A/C relay - PCM)