HVAC Compressor Clutch Does Not Disengage Gasoline
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 |
Did the compressor continue to run? | -- | Go to Step 2 | Go to Step 3 |
2 | Repair the short to B+ in CKT 59 (DK GRN). Is the repair complete? | -- | System OK | -- |
3 | Connect a test light from the A/C compressor relay connector, cavity 86 to B+. Did the test light illuminate? | -- | Go to Step 4 | Go to Step 5 |
4 |
Did the test light illuminate? | -- | Go to Step 6 | Go to Step 7 |
5 | Replace the A/C compressor relay. Refer to Compressor Relay Replacement . Is the repair complete? | -- | System OK | -- |
6 | Repair the short to ground in CKT 459 (DK GRN/WHT) between the A/C compressor relay connector, cavity 86, and the VCM connector C3, cavity 1. Is the repair complete? | -- | System OK | -- |
7 | Connect a test light from the VCM connector C3, cavity 25 to ground. Did the test light illuminate? | - | Go to Step 8 | Go to Step 9 |
8 | Disconnect the A/C compressor high pressure cut-off switch connector with the test light still connected. Did the test light remain on? | -- | Go to Step 10 | Go to Step 11 |
9 | Replace the VCM. Refer to VCM Replacement/Programming in Engine Controls. Is the repair complete? | -- | System OK | -- |
10 | Repair the short to B + in CKT 762 (DK GRN/WHT) between the VCM connector C3, cavity 25 and the A/C compressor high pressure cut-off switch connector, cavity B. Is the repair complete? | -- | System OK | -- |
11 | Repair the short to B + in CKT 203 (LT BLU) between the A/C compressor high pressure cutoff switch connector, cavity A and the heater and A/C control. Is the repair complete? | -- | System OK | -- |
HVAC Compressor Clutch Does Not Disengage Diesel MFI
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 |
Did the compressor continue to run? | -- | Go to Step 2 | Go to Step 3 |
2 | Repair the short to B+ in CKT 59 (DK GRN) between the A/C compressor relay connector, cavity 87 and the A/C compressor clutch connector, cavity A. Is the repair complete? | -- | System OK | -- |
3 | Connect a test light from the A/C compressor relay connector cavity 85 to ground. Did the test light illuminate? | -- | Go to Step 5 | Go to Step 4 |
4 | Replace the A/C compressor relay. Refer to Compressor Relay Replacement . Is the repair complete? | -- | System OK | -- |
5 | With the test light still connected, disconnect the A/C compressor high pressure cutoff switch. Does the test light still illuminate? | -- | Go to Step 6 | Go to Step 7 |
6 | Repair the short to B + in CKT 762 (DK GRN/WHT) between the A/C compressor high pressure cutoff switch connector, cavity B, to the A/C compressor relay connector, cavity 85. Is the repair complete? | -- | System OK | -- |
7 |
Does the test lamp still illuminate? | -- | Go to Step 8 | Go to Step 9 |
8 | Repair the short to B + in CKT 203 (LT BLU) between the A/C compressor high pressure cutoff switch connector, cavity A, and the A/C compressor refrigerant pressure switch connector, cavity A. Is the repair complete? | -- | System OK | -- |
9 | Repair the short to B + in CKT 922 (GRY) between the A/C compressor refrigerant pressure switch connector, cavity B and the heater and A/C control. Is the repair complete? | -- | System OK | -- |
HVAC Compressor Clutch Does Not Disengage Diesel EFI
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 |
Did the compressor continue to run? | -- | Go to Step 2 | Go to Step 3 |
2 | Repair the short to B + in CKT 59 (DK GRN) between the A/C compressor relay connector, cavity 87, and the A/C compressor clutch connector, cavity A. Is the repair complete? | -- | System OK | -- |
3 | Connect a test light from the A/C compressor relay connector, cavity 86 to B +. Did the test light illuminate? | -- | Go to Step 4 | Go to Step 5 |
4 |
Did the test light illuminate? | -- | Go to Step 6 | Go to Step 7 |
5 | Replace the A/C compressor relay. Refer to Compressor Relay Replacement . Is the repair complete? | -- | System OK | -- |
6 | Repair the short to ground in CKT 459 (DK GRN/WHT) between the A/C compressor relay connector, cavity 86 and the PCM connector C3, cavity D5. Is the repair complete? | -- | System OK | -- |
7 |
Did the test light illuminate? | -- | Go to Step 8 | Go to Step 15 |
8 | With the test light still connected, disconnect the A/C high pressure cutoff switch. Does the test light still illuminate? | -- | Go to Step 9 | Go to Step 10 |
9 | Repair the short to B + in CKT 762 (DK GRN/WHT) between the A/C compressor high pressure cutoff switch connector, cavity B and the PCM connector C1, cavity C2. Is the repair complete? | -- | System OK | -- |
10 |
Did the test light illuminate? | -- | Go to Step 11 | Go to Step 12 |
11 | Repair the short to B + in CKT 203 (LT BLU) between the A/C compressor refrigerant pressure switch connector, cavity A, and the A/C compressor high pressure cutoff switch connector, cavity A. Is the repair complete? | -- | System OK | -- |
12 |
Did the test light illuminate? | -- | Go to Step 13 | Go to Step 14 |
13 | Repair the short to B + in CKT 922 (GRY) between the A/C compressor refrigerant pressure switch connector, cavity B and the heater and A/C control. Is the repair complete? | -- | System OK | -- |
14 | Replace the heater and A/C control. Is the repair complete? | -- | System OK | -- |
15 | Replace the PCM. Refer to Powertrain Control Module Replacement/Programming in Engine Controls. Is the repair complete? | -- | System OK | -- |
