A/C Compressor Clutch Circuit Troubleshooting
  1. Measure the voltage between the A/C compressor clutch relay 4P socket No. 4 terminal and body ground.
Is there battery voltage?
YES -
Go to Step 13 .
NO -
Repair open in the wire between the No. 16 (7.5 A) fuse in the driver's under-dash fuse/relay box and the A/C compressor clutch relay.■
  1. Turn the ignition switch to LOCK (0).
  1. Reinstall the A/C compressor clutch relay.
  1. Jump the SCS line with the HDS.
    NOTE: This step must be done to protect the powertrain control module (ECM/PCM) from damage.
  1. Disconnect ECM/PCM connector A (44P) (R20A3 engine model) or ECM/PCM connector A (49P) (K24Z3 engine model).