Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: HVAC Schematics Connector End View Reference: HVAC Connector End Views | |||
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 compressor clutch relay from the underhood fuse block. 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 complete the repair? | Go to Step 11 | -- |
5 | Test the A/C compressor clutch relay. The switch should be normally open between terminals 1 and 3. Did the relay test OK? | Go to Step 6 | Go to Step 8 |
6 |
Does the A/C compressor clutch disengage? | Go to Step 9 | Go to Step 7 |
7 | Test the A/C compressor clutch relay control circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 11 | Go to Step 10 |
8 | Replace the A/C compressor relay. Refer to Compressor Relay Replacement . Did you complete the replacement? | Go to Step 11 | -- |
9 | Replace the A/C switch. Refer to Heater and Air Conditioning Control Replacement . Did you complete the replacement? | Go to Step 11 | -- |
10 | Replace the PCM. Refer to Powertrain Control Module Replacement Engine-Engine Controls LNK or Powertrain Control Module Replacement Engine-Engine Controls LV6. Did you complete the replacement? | Go to Step 11 | -- |
11 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 |
