Pinpoint Test E: The Air Conditioning (A/C) Is Inoperative
WARNING: This page is about a different variant/trim than selected.
- E1 USE THE RECORDED DTCs FROM THE PCM SELF-TEST
- Using the recorded results from the PCM self-test:
- Is DTC P2611, P1459, P1464, P0537, P0538, or P0645 present?
- Yes : Refer to ENGINE CONTROLS - POWERTRAIN DTC CHARTS AND DESCRIPTION - (HYBRID) to continue diagnosis.
- No : GO to E2.
- E2 CHECK THE REFRIGERANT PRESSURE
- Key in OFF position.
- Connect the manifold set to the service ports.
- Is the pressure 345 - 1,724 kPa (50 - 250 psi)?
- Yes : GO to E3.
- No : CHECK the system for refrigerant leaks. Refer to HVAC CONTROL SYSTEM - GENERAL INFORMATION article for procedures. .
- E3 CHECK THE A/C CLUTCH RELAY
- Disconnect: A/C Clutch Relay C1008.
- Carry out the A/C clutch relay component test. Refer to COMPONENT TESTING .
- Is the A/C clutch relay OK?
- Yes : GO to E4.
- No : INSTALL a new A/C clutch relay. TEST the system for normal operation.
- E4 CHECK CIRCUIT 1483 (WH/PK) FOR VOLTAGE
- Measure the voltage between the A/C compressor clutch relay C1008-3, circuit 1483 (WH/PK), harness side and ground.
- Is the voltage greater than 10 volts?
- Yes : GO to E5.
- No : REPAIR the circuit. TEST the system for normal operation.
- E5 CHECK CIRCUIT 321 (GY/WH) FOR AN OPEN
- Disconnect: A/C Compressor Clutch C100.
- Connect a fused (5A) jumper wire between the A/C clutch relay C1008-3, circuit 1483 (WH/PK), harness side and the A/C clutch relay C1008-5, circuit 321 (GY/WH), harness side.
- Measure the voltage between the A/C compressor C100-1, circuit 321 (GY/WH), harness side and ground.
- Is the voltage greater than 10 volts?
- Yes : REMOVE the jumper wire. GO to E6.
- No : REPAIR the circuit. TEST the system for normal operation.
- E6 CHECK CIRCUIT 57 (BK) FOR AN OPEN
- Measure the resistance between the A/C compressor clutch C100-2, circuit 57 (BK), harness side and ground.
- Is the resistance less than 5 ohms?
- Yes : GO to E7.
- No : REPAIR the circuit. TEST the system for normal operation.
- E7 CHECK THE CLUTCH AIR GAP
- Measure the A/C compressor clutch air gap at 3 equally spaced locations between the clutch hub and the A/C compressor clutch pulley.
- Is the A/C compressor clutch air gap greater than 0.76 mm (0.030 in)?
- Yes : ADJUST the A/C compressor clutch air gap to within specification. Refer to HVAC CONTROL SYSTEM - GENERAL INFORMATION article for procedure. . TEST the system for normal operation.
- No : INSTALL a new A/C compressor clutch coil. REFER to HVAC SYSTEM - AIR CONDITIONING . TEST the system for normal operation.