Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you review the HVAC operation and perform the necessary inspections? | -- | Go to Step 2 | Go to Symptoms |
2 | Inspect the A/C Compressor Fuse at the Underhood Fuse Block. Is the fuse operational? | -- | Go to Step 4 | Go to Step 3 |
3 |
Did you complete the repair? | -- | Go to Step 36 | -- |
4 | Inspect the IGN-E Fuse at the Underhood Fuse Block. Is the fuse operational? | -- | Go to Step 6 | Go to Step 5 |
5 |
Did you complete the repair? | -- | Go to Step 36 | -- |
6 |
Does the test lamp illuminate? | -- | Go to Step 7 | Go to Step 8 |
7 | Connect a DMM between CKT 603 (DK GRN/WHT) cavity 30 of the VCM connector C3 to ground. Does the test lamp illuminate? | -- | Go to Step 9 | Go to Step 10 |
8 |
Does the test lamp illuminate? | -- | Go to Step 11 | Go to Step 12 |
9 | Connect a test lamp between CKT 459 (DK GRN/WHT) cavity 1 of the VCM connector C3 to ground. Does the test lamp illuminate? | -- | Go to Step 13 | Go to Step 14 |
10 |
Does the test lamp illuminate? | -- | Go to Step 21 | Go to Step 22 |
11 | Use a DMM in order to test the CKT 762 (DK GRN/WHT) for continuity between the A/C high pressure cut-off switch cavity A and cavity 25 of the VCM connector C3. Does the DMM show continuity? | -- | Go to Step 15 | Go to Step 16 |
12 | Connect a test lamp between CKT 66 (LT GRN) cavity H of the heater and A/C control module connector C2 to ground. Does the test lamp illuminate? | -- | Go to Step 17 | Go to Step 18 |
13 |
Does the test lamp illuminate? | -- | Go to Step 19 | Go to Step 20 |
14 |
Does the test lamp illuminate? | -- | Go to Step 27 | Go to Step 28 |
15 | Replace the A/C high pressure cut-off switch. Did you complete the replacement? | -- | Go to Step 36 | -- |
16 | Repair the open in CKT 762 (DK GRN/WHT). Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 36 | -- |
17 | Repair the open in CKT 66 (LT GRN). Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 36 | -- |
18 | Connect a test lamp between CKT 141 (BRN) cavity E of the heater and A/C control module connector C2 to ground. Does the test lamp illuminate? | -- | Go to Step 25 | Go to Step 26 |
19 | Use a DMM in order to test for continuity from CKT 850 (BLK) cavity A of the A/C compressor clutch connector to ground. Does the DMM show continuity? | -- | Go to Step 32 | Go to Step 35 |
20 |
Does the test lamp illuminate? | -- | Go to Step 30 | Go to Step 31 |
21 | Use a DMM in order to test CKT 603 (DK GRN) for continuity between the switch and cavity 30 of the VCM connector C3. Does the DMM show continuity? | -- | Go to Step 23 | Go to Step 24 |
22 | Repair the open in CKT 850 (BLK). Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 36 | -- |
23 | Replace the A/C low pressure cut-off switch. Did you complete the replacement? | -- | Go to Step 36 | -- |
24 | Repair the open in CKT 603 (DK GRN). Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 36 | -- |
25 | Replace the heater and A/C control module. Refer to Control Assembly Replacement in Heating, Ventilation, and Air Conditioning. Did you complete the replacement? | -- | Go to Step 36 | -- |
26 | Repair the open in CKT 141 (BRN). Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 36 | -- |
27 | Connect a test lamp between the A/C enable relay CKT 1240 (ORN) cavity C6 and ground. Does the test lamp illuminate? | -- | Go to Step 20 | Go to Step 29 |
28 | Repair the open in CKT 639 (PNK). Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 36 | -- |
29 | Repair the open in CKT 1240 (ORN). Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 36 | -- |
30 |
Does the test lamp illuminate? | -- | Go to Step 32 | Go to Step 33 |
31 | Repair the open in CKT 459 (DK GRN/WHT). Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 36 | -- |
32 | Use a DMM in order to test for resistance between pin B and pin A of the A/C compressor clutch. Refer to Circuit Testing in Wiring Systems. Does the resistance measure less than the specified value? | 10 ohms | Go to Powertrain On Board Diagnostic (OBD) System Check in Engine Controls | Go to Step 34 |
33 | Repair the open in CKT 59 (DK GRN). Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 36 | -- |
34 | Replace the A/C compressor clutch. Refer to Compressor Clutch Plate/Hub Assembly Replacement . Did you complete the replacement? | -- | Go to Step 36 | -- |
35 | Repair the open in CKT 850 (BLK). Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 36 | -- |
36 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2 |
