Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
DEFINITION: Checking the mechanical action of the A/C compressor clutch | ||||
1 | Perform a CCOT System A/C diagnosis. Refer to CCOT System A/C Diagnosis . Is the repair complete? | -- | System OK | Go to Step 2 |
2 |
Does the test lamp light? | -- | Go to Step 4 | Go to Step 3 |
3 | Locate and repair the open in CKT 150 (BLK) between the A/C compressor clutch and ground. Is the repair complete? | -- | System OK | -- |
4 |
Does the test lamp light? | -- | Go to Step 6 | Go to Step 5 |
5 | Locate and repair the open in CKT 59 (DK GRN) between the underhood fuse-relay center and the A/C compressor clutch. Is the repair complete? | -- | System OK | -- |
6 | With the ignition switch in the ON position, connect a test lamp from the A/C compressor clutch relay cavity B4 to ground. Does the test lamp light? | -- | Go to Step 8 | Go to Step 7 |
7 | Locate and repair the open in CKT 1240 (ORN) from the A/C compressor fuse to the A/C compressor clutch relay in the underhood fuse-relay center. Is the repair complete? | -- | System OK | -- |
8 | With the ignition switch in the ON position, connect a test lamp from the A/C compressor clutch relay cavity A4 to ground. Does the test lamp light? | -- | Go to Step 10 | Go to Step 9 |
9 | Locate and repair the open in CKT 639 (PNK) from the IGN E fuse to the A/C compressor clutch relay in the underhood fuse-relay center. Is the repair complete? | -- | System OK | -- |
10 |
Does the test lamp light? | -- | Go to Step 12 | Go to Step 11 |
11 | Locate and repair the open in CKT 459 (DK GRN/WHT) between the A/C compressor clutch relay and the PCM or VCM. Is the repair complete? | -- | System OK | -- |
12 |
Does the test lamp light? | -- | Go to Step 14 | Go to Step 13 |
13 | Replace the A/C compressor clutch relay. Is the repair complete? | -- | System OK | -- |
14 | Inspect to determine if the vehicle is gasoline powered. Is this a gasoline-powered vehicle? | -- | Go to Step 15 | Go to Step 19 |
15 |
Does the test lamp light? | -- | Go to Step 17 | Go to Step 16 |
16 | Locate and repair the open in CKT 451 (BLK/WHT) between the VCM connector C3 cavity 17 and ground. Is the repair complete? | -- | System OK | -- |
17 | Connect a self-powered test lamp between the VCM connector C3 cavity 18 and ground. Does the test lamp light? | -- | Go to Step 23 | Go to Step 18 |
18 | Locate and repair the open in CKT 451 (BLK/WHT) between the VCM connector C3 cavity 18 and ground. Is the repair complete? | -- | System OK | -- |
19 | Connect a test lamp between the PCM connector C3 cavity D7 and ground. Does the test lamp light? | -- | Go to Step 21 | Go to Step 20 |
20 | Locate and repair the open in CKT 551 (TAN/WHT) between the PCM connector C3 cavity D7 and ground. Is the repair complete? | -- | System OK | -- |
21 | Connect a self-powered test lamp between the PCM connector C3 cavity D6 and ground. Does the test lamp light? | -- | Go to Step 25 | Go to Step 22 |
22 | Locate and repair the open in CKT 451 (BLK/WHT) between the PCM connector C3 cavity D6 and ground. Is the repair complete? | -- | System OK | -- |
23 | Connect a test lamp between VCM connector C3 cavity 25 and the ground. Does the test lamp light? | -- | Go to Step 27 | Go to Step 24 |
24 | Replace the VCM. Is the repair complete? | -- | System OK | -- |
25 |
Does the test lamp light? | -- | Go to Step 27 | Go to Step 26 |
26 | Replace the PCM. Is the repair complete? | -- | System OK | -- |
27 |
Does the test lamp light? | -- | Go to Step 29 | Go to Step 28 |
28 | Locate and repair the open in CKT 762 (DK GRN/WHT) between the A/C compressor high pressure switch and the PCM or VCM. Is the repair complete? | -- | System OK | -- |
29 | Connect a self-powered test lamp between pins A and B of the A/C compressor high pressure cut-out switch. Does the test lamp light? | -- | Go to Step 30 | Go to Step 31 |
30 | Determine if the vehicle is diesel or gas powered. Is the vehicle diesel powered? | -- | Go to Step 32 | Go to Step 34 |
31 | Replace the A/C compressor high pressure cut-out switch. Is the repair complete? | -- | System OK | -- |
32 |
Does the test lamp light? | -- | Go to Step 36 | Go to Step 33 |
33 | Locate and repair the open in CKT 603 (DK GRN) between the A/C compressor cycling switch and the A/C compressor high pressure cut-out switch. Is the repair complete? | -- | System OK | -- |
34 |
Does the test lamp light? | -- | Go to Step 36 | Go to Step 35 |
35 | Locate and repair the open in CKT 66 (LT GRN) between the A/C compressor high pressure cutout switch and the HVAC module. Is the repair complete? | -- | System OK | -- |
36 |
Does the test lamp light? | -- | Go to Step 37 | Go to Step 38 |
37 | Determine if the vehicle is diesel or gas powered. Is the vehicle diesel powered? | -- | Go to Step 39 | Go to Step 41 |
38 | Replace the A/C compressor cycling switch. Is the repair complete? | -- | System OK | -- |
39 |
Does the test lamp light? | -- | Go to Step 41 | Go to Step 40 |
40 | Locate and repair the open in CKT 66 (LT GRN) between the HVAC control module and the A/C compressor cycling switch. Is the repair complete? | -- | System OK | -- |
41 |
Does the test lamp light? | -- | Go to Step 43 | Go to Step 42 |
42 | Locate and repair the open in CKT 141 (BRN) between the IP fuse block and the HVAC control module. Is the repair complete? | -- | System OK | -- |
43 | Replace the HVAC control module. Is the repair complete? | -- | System OK | -- |
