Step | Action | Values | Yes | No |
|---|---|---|---|---|
Schematic Reference: HVAC Schematics Connector End View Reference: HVAC Connector End Views DEFINITION: The blower motor operates with the HVAC controls in the OFF position. | ||||
1 | Did you perform the Diagnostic System Check - Vehicle? | -- | Go to Step 2 | |
2 |
Is the blower motor OFF? | -- | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
3 | With the scan tool, observe the Commanded Blower parameter in the HVAC Systems Automatic data list. Does the scan tool indicate that the Commanded Blower parameter is near the specified value? | 0% | Go to Step 4 | Go to Step 8 |
4 |
Is the blower motor OFF? | -- | Go to Step 5 | Go to Step 7 |
5 |
Does the test lamp illuminate? | Go to Step 6 | Go to Step 7 | |
6 | Test the blower motor speed control circuit of the blower motor for a short to ground. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | -- | Go to Step 11 | Go to Step 8 |
7 | Inspect for poor connections at the harness connector of the blower motor. Refer to Wiring Repairs and Connector Repairs . Did you find and correct the condition? | -- | Go to Step 11 | Go to Step 9 |
8 | Inspect for poor connections at the harness connector of the HVAC control module. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | -- | Go to Step 11 | Go to Step 10 |
9 | Replace the blower motor. Refer to Blower Motor Replacement . Did you complete the replacement? | -- | Go to Step 11 | -- |
10 | Replace the HVAC control module. Refer to Control Module References for replacement, setup, and programming. 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 2 |
