For 1990-2009 cars

Step | Action | Yes | No
--- | --- | --- | ---
1 | Was the HVAC System Check performed? | Go to Step 2 | Go to HVAC System Check
2 |

1. Start the engine.
2. Move the blower speed selector switch to any position except the OFF position.
3. Turn the air conditioning (A/C) switch to the ON position.

Does the A/C compressor clutch engage?

Go to Step 3

Go to HVAC Compressor Clutch Does Not Engage

3 | Backprobe the connector of the A/C condenser fan motor with a test lamp from terminal 2 to ground. Does the test lamp light? | Go to Step 4 | Go to Step 7
4 | Test for an open in the BLK wire between the A/C condenser fan motor and G103. Was an open found? | Go to Step 5 | Go to Step 6
5 | Repair the open in the BLK wire between the A/C condenser fan motor and G102. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | Go to HVAC System Check | --
6 | Replace the A/C condenser fan motor. Refer to Condenser Replacement . Is the repair complete? | Go to HVAC System Check | --
7 |

1. Remove the relay box from the wheelhousing.
2. Backprobe the A/C 2 condenser fan relay with a test lamp from terminal 3 to ground.

Does the test lamp light?

Go to Step 8

Go to Step 9

8 | Repair the open in the BLU/BLK wire or in the RED/BLU wire.The wire is between the A/C 2 condenser fan relay and the A/C condenser fan motor. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | Go to HVAC System Check | --
9 | Backprobe the A/C 2 condenser fan relay with a test lamp from terminal 4 to ground. Does the test lamp light? | Go to Step 11 | Go to Step 10
10 | Repair the open in the RED/WHT wire between S122 and the A/C 2 condenser fan relay. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | Go to HVAC System Check | --
11 | Backprobe the A/C 2 condenser fan relay with a test lamp from terminal 2 to B+. Does the test lamp light? | Go to Step 13 | Go to Step 12
12 | Repair the open in the BLK wire between the A/C 2 condenser fan relay and G102. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | Go to HVAC System Check | --
13 | Test the BLK/RED wire between S123 and the A/C 2 condenser fan relay for an open. Was an open found? | Go to Step 14 | Go to Step 15
14 | Repair the open in the BLK/RED wire between S123 and the A/C 2 condenser fan relay. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | Go to HVAC System Check | --
15 | Replace the A/C 2 condenser fan relay. Refer to Condenser Fan Relay Replacement . Is the repair complete? | Go to HVAC System Check | --