Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
DEFINITION: A/C compressor clutch will not disengage when no A/C request has been made and no Powertrain DTC has been set. | ||||
1 | Did you review the Compressor Controls Circuit Description and perform the necessary inspections? | -- | Go to Symptoms | |
2 | Verify that the HVAC compressor clutch does not disengage. Does the HVAC compressor clutch operate normally? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | |
3 |
Does the A/C compressor clutch coil disengage? | -- | ||
4 |
Important: Perform the reprogramming procedure for the PCM. Replace the Powertrain Control Module (PCM). Is the repair complete? | -- | -- | |
5 |
Does the A/C compressor clutch coil disengage? | -- | ||
6 |
Is circuit 459 continuous to ground? | -- | ||
7 | Repair a short to ground in circuit 459 between the underhood accessory wiring junction block and the PCM connector C2. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
8 | Replace the A/C CLU relay. Refer to Compressor Relay Replacement . Is the repair complete? | -- | -- | |
9 |
Is voltage present on circuit 59? | -- | ||
10 | Repair a short to B+ on circuit 59 between the underhood accessory wiring junction block and the A/C compressor clutch coil. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
11 | Replace the A/C compressor clutch coil. Refer to Air Conditioning Clutch Coil Replacement . Is the repair complete? | -- | -- | |
12 |
Did you correct the condition? | -- | System OK | |
