Diagnostic Fault Information
WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
Blower Motor Malfunction
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
| Blower motor control module battery positive voltage. | 1 | 1 | 2 | - |
| Blower motor speed control | 2 | 1 | 1 | - |
| High blower motor relay control | 2 | 1 | 1 | - |
| Front blower motor low reference | 1 | 1 | 1 | - |
| Blower motor control ground | - | 1 | 1 | - |
| 1. Blower motor inoperative 2. Blower motor always ON |
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