Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: HVAC Schematics | |||
1 | Did you review the Air Delivery Description and Operation and the Air Temperature Description and Operation and perform the necessary inspections? | Go to Step 2 | |
2 |
Does the A/C compressor clutch disengage? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 | Remove the A/C MG relay from fuse and relay block 2. Does the A/C compressor clutch disengage? | Go to Step 5 | Go to Step 4 |
4 | Repair the short to voltage in the A/C compressor clutch supply voltage circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 13 | -- |
5 | Test the A/C MG relay for continuity between terminals 3 and 5.
Refer to
Does continuity exist? | Go to Step 11 | Go to Step 6 |
6 |
Does the A/C compressor clutch disengage? | Go to Step 12 | Go to Step 7 |
7 |
Does the A/C compressor clutch disengage? | Go to Step 9 | Go to Step 8 |
8 | Repair the short to ground in the A/C MG relay control circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 13 | -- |
9 | Test for a short to voltage in the A/C compressor control module supply voltage circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 13 | Go to Step 10 |
10 | Replace the A/C compressor control module. Refer to Air Conditioning (A/C) Compressor Control Module Replacement . Did you complete the replacement? | Go to Step 13 | -- |
11 | Replace the MG relay. Refer to Compressor Relay Replacement . Did you complete the replacement? | Go to Step 13 | -- |
12 | Replace the A/C switch. Refer to Control Assembly Replacement . Did you complete the replacement? | Go to Step 13 | -- |
13 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 |
