HVAC Compressor Clutch Does Not Disengage GAS
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
|
Important:: Before performing the following diagnostic check and repair any DTC's found stored within the VCM. Refer to Powertrain On Board Diagnostic (OBD) System Check (5.7L) or Powertrain On Board Diagnostic (OBD) System Check (7.4L) in Engine Controls. | ||||
1 | Has the HVAC Compressor Controls System Check been performed? | -- | Go to Step 2 | |
2 |
Does the compressor clutch disengage? | -- | Go to Step 6 | Go to Step 3 |
3 | Connect a DMM (volts) between cavity A6 of the A/C clutch relay socket and ground. Is voltage greater than the value given? | 0.5v | Go to Step 4 | Go to Step 5 |
4 | Locate and repair the short to battery voltage between cavity A6 and the A/C Compressor Clutch. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
5 | Replace the A/C Compressor Clutch. Refer to Compressor Clutch Plate/Hub Assembly Replacement . Is the repair complete? | -- | -- | |
6 |
Does the relay click? | -- | Go to Step 8 |
Go to Step 7 |
7 | Replace the A/C Compressor Clutch Relay. Is the repair complete? | -- | -- | |
8 |
Is continuity present? | -- | Go to Step 9 | Go to Step 10 |
9 | Locate and repair the short to ground between the A/C Compressor Clutch Relay and cavity 1 of VCM, C3. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
10 |
Is battery voltage present? | -- | Go to Step 12 | Go to Step 11 |
11 | Replace the HVAC Control Module. Refer to Control Assembly Replacement Control Assembly Replacement. Is the repair complete? | -- | -- | |
12 | Locate and repair the short to battery voltage between the HVAC Control Module, C3, cavity 10 and VCM, C3, cavity 25. Refer to Wiring Repairs in Wiring Systems. | -- | -- | |
HVAC Compressor Clutch Does Not Disengage DIESEL
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
|
Important:: Before performing the following diagnostic check and repair any DTC's found stored within the PCM. Refer to Powertrain On Board Diagnostic (OBD) System Check (6.5L) in Engine Controls. | ||||
1 | Has the HVAC Compressor Controls System Check been performed? | -- | Go to Step 2 | |
2 |
Does the compressor clutch disengage? | -- | Go to Step 6 | Go to Step 3 |
3 | Connect a DMM (volts) between cavity A6 of the A/C clutch relay socket and ground. Is voltage greater than the value given? | 0.5v | Go to Step 4 | Go to Step 5 |
4 | Locate and repair the short to battery voltage between cavity A6 and the A/C Compressor Clutch. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
5 | Replace the A/C Compressor Clutch. Refer to Compressor Clutch Plate/Hub Assembly Replacement . Is the repair complete? | -- | -- | |
6 |
Does the relay click? | -- | Go to Step 8 |
Go to Step 7 |
7 | Replace the A/C Compressor Clutch Relay. Is the repair complete? | -- | -- | |
8 |
Is continuity present? | -- | Go to Step 9 | Go to Step 10 |
9 | Locate and repair the short to ground between the A/c Compressor Clutch Relay and cavity D5 of PCM C3. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
10 |
Is battery voltage present? | -- | Go to Step 12 | Go to Step 11 |
11 | Replace the HVAC Control Module. Refer to Control Assembly Replacement Control Assembly Replacement. Is the repair complete? | -- | -- | |
12 | Locate and repair the short to battery voltage between the HVAC Control Module, C3, cavity 10 and PCM, C1, cavity C2. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
