A/C Signal: Testing and Inspection

1. Start the engine.
2. Turn the A/C switch and fan switch on.
3. Verify that the A/C compressor magnetic clutch actuates.
- If it does not actuate, go to symptom troubleshooting "NO.23 A/C DOES NOT WORK SUFFICIENTLY."

4. Fully open the throttle valve and verify that the A/C compressor magnetic clutch does not actuate for 2 - 5 seconds.
- If it actuates, proceed to next step.




5. Connect the SSTs (NGS tester) to DLC-2.
6. Turn the A/C switch off.
7. Turn the ignition key to ON.
8. Select the SIMULATION TEST function on the NGS display.
9. Select IG ON TEST mode.
10. Select A/C RLY PID.
11. Press START.
12. Turn the A/C relay from off to on and inspect if the operation sound of the relay is heard.
- If the operation sound is heard, inspect TP V PID.
- If the operation sound is not heard, go to the next step.

13. A/C relay
14. Open or short to ground circuit in wiring harness and connectors (ignition key - A/C relay - PCM terminal 96)
15. A/C related parts