Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Was the HVAC Compressor Controls System Check performed? | Go to Step 2 | ||
2 |
Important: In order to avoid a misdiagnosis, ensure that the air conditioning (A/C) refrigerant system is in the proper mechanical condition (no leaks, the correct refrigerant level, etc.) before proceeding. Start the engine. Does the test lamp light? | -- | Go to Step 3 | Go to Step 4 |
3 | Replace the A/C compressor clutch. Refer to Compressor Clutch Coil and/or Pulley Rim . Is the repair complete? | -- | -- | |
4 |
Does the test lamp light? | -- | Go to Step 5 | Go to Step 6 |
5 | Repair the open in the BLK/RED wire between the A/C compressor clutch relay and the A/C compressor clutch. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
6 | Backprobe the A/C compressor clutch relay connector with a test lamp from terminal 4 to ground. Does the test lamp light? | -- | Go to Step 8 | Go to Step 7 |
7 | Repair the open in the RED/WHT wire between the A/C fuse and the A/C compressor clutch relay. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
8 | Backprobe the A/C compressor clutch relay connector with a test lamp from terminal 1 to ground. Does the test lamp light? | -- | Go to Step 10 | Go to Step 9 |
9 | Repair the open in the LT GRN wire between the junction block and the A/C compressor clutch relay. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
10 |
Does the A/C compressor clutch engage? | -- | Go to Step 11 | Go to Step 12 |
11 | Connect a test lamp from the A/C compressor control module connector terminal 8 to ground. Does the test lamp light? | -- | Go to Step 16 | Go to Step 15 |
12 | Backprobe the A/C compressor clutch relay connector with a fused jumper wire from terminal 2 to ground. Does the compressor clutch engage? | -- | Go to Step 14 | Go to Step 13 |
13 | Replace the A/C compressor clutch relay. Refer to Compressor Relay Replacement . Is the repair complete? | -- | -- | |
14 | Repair the open in the PNK wire between the A/C compressor clutch relay and the A/C compressor control module. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
15 | Repair the open in the BLK/WHT wire between S202 and the A/C compressor control module. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
16 | Connect a test lamp from the A/C compressor control module connector terminal 3 to B+. Does the test lamp light? | -- | Go to Step 18 | Go to Step 17 |
17 | Repair the open in the BLK /BLU or the BLK wire between the A/C compressor control module terminal 3 and G201. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
18 | Connect a test lamp from the A/C compressor control module connector terminal 9 to B+. Does the test lamp light? | -- | Go to Step 20 | Go to Step 19 |
19 | Repair the open in the BLK wire between the A/C compressor control module and G201. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
20 | Connect a test lamp from the A/C compressor control module connector terminal 11 to ground. Does the test lamp light? | -- | Go to Step 22 | Go to Step 21 |
21 | Backprobe the A/C switch connector with a test lamp from terminal 2 to ground. Does the test lamp light? | -- | Go to Step 24 | Go to Step 23 |
22 | Connect a test lamp from the A/C compressor control module connector terminal 12 to B+. Does the test lamp light? | -- | Go to Step 27 | Go to Step 28 |
23 | Backprobe the A/C switch connector with a test lamp from terminal 1 to ground. Does the test lamp light? | -- | Go to Step 25 | Go to Step 26 |
24 | Repair the open in the BLU/WHT wire between the A/C switch and the A/C compressor control module. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
25 | Replace the A/C switch. Refer to Air Conditioning (A/C) Cooling Fan Switch Replacement . Is the repair complete? | -- | -- | |
26 | Repair the open in the PNK/BLK wire between S233 and the A/C switch. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
27 |
Is the resistance greater than the specified value? | 2000ohms | Go to Step 32 | Go to Step 33 |
28 |
Does the test lamp light? | -- | Go to Step 29 | Go to Step 31 |
29 | Inspect for an open in the ORN/BLK wire between the A/C compressor control module and the refrigerant pressure switch. Did you find an open? | -- | Go to Step 39 | Go to Step 30 |
30 | Replace the refrigerant pressure switch. Refer to Pressure Cycling Switch Replacement . Is the repair complete? | -- | -- | |
31 | Repair the open in the BLK wire between the refrigerant pressure switch and G103. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
32 | Replace the evaporator temperature sensor. Refer to Air Conditioning (A/C) Temperature Sensor Replacement . Is the repair complete? | -- | -- | |
33 |
Is the resistance greater than the specified value? | 2000ohms | Go to Step 34 | Go to Step 35 |
34 | Repair the open in the WHT/BLU or the YEL/GRN wire between the A/C compressor control module and the evaporator temperature sensor. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
35 |
Is the resistance less than the specified value? | Infinite | Go to Step 36 | Go to Step 37 |
36 | Repair the short to ground in the LT GRN/RED wire between the PCM and the A/C compressor control module. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
37 |
Does the test lamp light? | -- | Refer to Air Conditioning (A/C) Idle Circuit Diagnosis in 1.0L or Air Conditioning (A/C) Idle Circuit Diagnosis 1.3L in Engine Controls | Go to Step 38 |
38 | Replace the A/C compressor control module. Refer to Air Conditioning (A/C) Compressor Control Module Replacement . Is the repair complete? | -- | -- | |
39 | Repair the open in the ORN/BLK wire between the A/C compressor control module and the refrigerant pressure switch. Is the repair complete? | -- | -- |
