ZDX V6-3.7L (2010)
A/C Signal: Testing and Inspection
A/C Signal Circuit Troubleshooting
1. Start the engine.
2. Turn the blower switch on.
3. Turn the A/C switch on.
4. Check the A/C CLUTCH in the DATA LIST with the HDS.
Does it indicate ON?
YES -
Go to step 5.
NO -
Do the A/C compressor clutch circuit troubleshooting See: Heating and Air Conditioning/Testing and Inspection/Component Tests and General
Diagnostics/A/C Compressor Clutch Circuit Troubleshooting.
5. Check the A/C system operation.
Does the A/C system operate?
YES -
The air conditioning system circuit is OK.
NO -
Go to step 6.
6. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
7. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
8. Activate the A/C CLUTCH in the INSPECTION MENU with the HDS.
Is there a clicking noise from the A/C compressor clutch?
YES -
Do the A/C system test See: Heating and Air Conditioning/Testing and Inspection/Component Tests and General Diagnostics/A/C System Test.
NO -
Go to step 9.
9. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
10. Jump the SCS line with the HDS.
11. Disconnect PCM connector A (49P).
12. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
13. Momentarily connect PCM connector terminal A13 to body ground with a jumper wire several times.
