RDX AWD L4-2.3L Turbo (2010)
A/C Signal: Testing and Inspection
HVAC
A/C Signal Circuit Troubleshooting
NOTE:
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If the blower does run, or if there is a blower motor DTC, the compressor and the cooling fans will not operate (No signal).
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Do not use this troubleshooting procedure if any of the following items are operative: A/C condenser fan, radiator fan, A/C compressor. Refer to
the symptom troubleshooting index.
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Before doing any symptom troubleshooting, check for powertrain DTCs See: Testing and Inspection/Initial Inspection and Diagnostic Overview.
1. Connect the HDS to the DLC and check for blower motor DTCs.
Are there any DTCs?
YES -
Do the appropriate DTC troubleshooting.
NO -
Go to step 2.
2. Start the engine.
3. Turn on the A/C.
4. Check the blower motor operates at all speeds.
Does the blower motor operate at all speeds?
YES -
Go to step 5.
NO -
Repair the problem in the blower motor circuit See: Testing and Inspection/Diagnostic Trouble Code Tests and Associated Procedures/B Code
Charts/B1241.
5. Check the A/C SWITCH in the PGM-FI Data List with the HDS.
Is the A/C SWITCH ON?
YES -
The A/C signal is OK at this time.
NO -
Go to step 6.
6. Check the evaporator temperature sensor input to the climate control unit See: Heating and Air Conditioning/Testing and Inspection/Initial
Inspection and Diagnostic Overview.
If the evaporator temperature sensor #5 reading above 0 °C (32 °F)?
YES -
Go to step 10.
NO -
Go to step 7.
