Engine Management

Scan Tool 16 (MIL 33):

Trouble Code Number
- Scan tool 16
- General Scan Tool (None listed)
- MIL 33

Fault Message
- A/C Clutch Relay Circuit

Background
- The PCM provides a switched ground to the A/C clutch relay.
- The PCM can prevent operation of the A/C clutch in selected situations such as during wide-open throttle or for a brief period at start-up.
- This DTC indicates an open or short-circuit condition in the circuit.

Range of Check
- Ignition switch: ON
- Battery voltage: 10 V or more
- 30 seconds or more after starting the engine

Set Condition
- Open or short circuit is detected in the A/C clutch relay control circuit for 3 seconds.

Probable Cause
- Compressor clutch relay open or shorted
- A/C control circuit defective
- Inoperative circuit driver in PCM