P0534 - Low A/C Cycling Period
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P0534 - LOW A/C CYCLING PERIOD
| Description: |
Indicates frequent A/C compressor clutch cycling. |
| Possible Causes: |
- Mechanical A/C system concern (such as low refrigerant charge, damaged A/C cycling switch).
- Intermittent open between the cycling pressure switch and the PCM.
- Intermittent open in the IGN RUN circuit to cycling pressure switch (if applicable).
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| Diagnostic Aids: |
- An intermittent open circuit, although possible, is unlikely.
- This test is designed to protect the transmission. In some strategies, the PCM unlocks the torque converter during A/C clutch engagement. If a concern is present that results in frequent A/C clutch cycling, damage could occur if the torque converter is cycled at these intervals. This test detects this condition, sets the DTC and prevents the torque converter from excessive cycling.
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| Application |
Key On Engine Off |
Key On Engine Running |
Continuous Memory |
| All |
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GO to X: Constant Control Relay Module (CCRM)
STEP 57 |