Auxiliary Blower Motor Always On Body Type VIN 3
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: HVAC Schematics Connector End View Reference: HVAC Connector End Views DEFINITION: The auxiliary blower motor operates with the auxiliary blower motor switch in the OFF position. | |||
1 | Did you perform the HVAC Diagnostic System Check? | Go to Step 2 | |
2 | Turn the auxiliary HVAC controls OFF. Is the auxiliary blower motor OFF? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 | Disconnect the auxiliary HVAC control module. Is the auxiliary blower motor OFF? | Go to Step 4 | Go to Step 5 |
4 | Inspect for poor connections at the harness connector of the auxiliary HVAC control module. Refer to Wiring Repairs and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 7 | Go to Step 6 |
5 | Repair a short to voltage in the appropriate auxiliary blower motor speed control circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 7 | -- |
6 | Replace the auxiliary HVAC control module. Refer to Auxiliary Heater and Air Conditioning Control Module Replacement . Did you complete the replacement? | Go to Step 7 | -- |
7 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 |
Auxiliary Blower Motor Always On Body Type VIN 6
Step | Action | Values | Yes | No |
|---|---|---|---|---|
Schematic Reference: HVAC Schematics Connector End View Reference: HVAC Connector End Views DEFINITION: The auxiliary blower motor operates with the HVAC controls in the OFF position. | ||||
1 | Did you perform the HVAC Diagnostic System Check? | -- | Go to Step 2 | |
2 |
Is the auxiliary blower motor OFF? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 | With the scan tool observe the auxiliary Blower Motor PWM Speed parameter in the REAR HVAC/RSA data list. Does the scan tool indicate that the auxiliary Blower Motor PWM Speed parameter is near the specified value? | 0% | Go to Step 4 | Go to Step 6 |
4 |
Is the auxiliary blower motor OFF? | -- | Go to Step 6 | Go to Step 5 |
5 | Inspect for poor connections at the harness connector of the auxiliary blower motor control processor. Refer to Wiring Repairs and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 9 | Go to Step 7 |
6 | Inspect for poor connections at the harness connector of the auxiliary HVAC control module. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 9 | Go to Step 8 |
7 | Replace the auxiliary blower motor control processor. Refer to Auxiliary Blower Motor Processor Replacement . Did you complete the replacement? | -- | Go to Step 9 | -- |
8 |
Important: Perform the recalibration procedure for the auxiliary HVAC control module. Replace the auxiliary HVAC control module. Refer to Auxiliary Heater and Air Conditioning Control Module Replacement . Did you complete the replacement? | -- | Go to Step 9 | -- |
9 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2 |
