Step | Action | Values | Yes | No |
|---|---|---|---|---|
DEFINITION: The front blower motor will not operate in medium-2 speed only. | ||||
1 | Did you review the HVAC blower operation and perform the necessary inspections? | -- | Go to Step 2 | Go to Symptoms |
2 |
Does the blower motor operate? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 |
Does the test lamp illuminate? | -- | Go to Step 5 | Go to Step 4 |
4 | Inspect CKT 72 (LT BLU) between the heater and A/C controller connector and the blower motor resistor/relay connector for an open or high resistance. Refer to Wiring Repairs in Wiring Systems. Did you find the condition? | -- | Go to Step 6 | -- |
5 | Replace the blower motor resistor/relay. Refer to Blower Motor Resistor Replacement . Did you complete the repair? | -- | Go to Step 7 | -- |
6 | Replace the heater and A/C controller. Refer to Control Assembly Replacement . Did you complete the repair? | -- | Go to Step 7 | -- |
7 | Operate the blower motor in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 3 |
