A/C Signal Circuit Troubleshooting
  1. Measure the voltage between the A/C compressor 3P connector No. 3 terminal (R20A3 engine model) or No. 2 terminal (K24Z3 engine model) and body ground.
Is there battery voltage?
YES -
Go to Step 10 .
NO -
Go to Step 12 .
  1. Turn the ignition switch to LOCK (0).