For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Was the entire HVAC diagnostic system check performed? | -- | Go to Step 2 | Go to Diagnostic System Check
2 |

1. Disconnect the electric air inlet actuator.
2. Place the ignition switch in the RUN position.
3. Using a test lamp, probe between the electric air inlet actuator connector terminal 5 and ground. Refer to Circuit Testing in Wiring Systems.

Is the test lamp on?

--

Go to Step 3

Go to Step 4

3 | Using a test lamp, probe the electric air inlet actuator connector terminals 7 and 5. Refer to Circuit Testing in Wiring Systems. Is the test lamp on? | -- | Go to Step 5 | Go to Step 6
4 | Repair the poor connection or open in circuit 241 between the electric air inlet actuator connector terminal 5 and S264. Refer to Wiring Repairs or Connector Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 13 | --
5 |

1. Set the heater-A/C control to the air recirculation position.
2. Using a test lamp, probe the electric air inlet actuator connector terminal 6 and ground. Refer to Circuit Testing in Wiring Systems.

Is the test lamp on?

--

Go to Step 7

Go to Step 8

6 | Repair the poor connection or open in circuit 150 between the electric air inlet actuator connector terminal 7 and S213. Refer to Wiring Repairs or Connector Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 13 | --
7 | Replace the electric air inlet actuator. Refer to Air Inlet Actuator Replacement . Is the repair complete? | -- | Go to Step 13 | --
8 | Using a test lamp, probe the heater-A/C control connector C2 terminal H and ground. Refer to Circuit Testing in Wiring Systems. Is the test lamp on? | -- | Go to Step 9 | Go to Step 10
9 | Repair the poor connection or open in circuit 684 between the heater-A/C control connector C2 terminal H and the electric air inlet actuator connector terminal 6. Refer to Wiring Repairs or Connector Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 13 | --
10 | Using a test lamp, probe the heater-A/C control connector C2 terminal K and B+. Refer to Circuit Testing in Wiring Systems. Is the test lamp on? | -- | Go to Step 11 | Go to Step 12
11 | Replace the heater-A/C control. Refer to HVAC Module Assembly Replacement . Is the repair complete? | -- | Go to Step 13 | --
12 | Repair the poor connection or open in circuit 150. Refer to Wiring Repairs or Connector Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 13 | --
13 |

1. Turn the ignition switch to the OFF position.
2. Reconnect all connectors/components removed.

Have all the repairs been made?

--

Go to Diagnostic System Check

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