Blower Motor Inoperative
WARNING: This page is about a different car, the 2004 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
Blower Motor Inoperative
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: HVAC Schematics Connector End View Reference: HVAC Connector End Views |
|||
| 1 | Did you review the Air Delivery Description and Operation and the Air Temperature Description and Operation perform the necessary inspections? | Go to Step 2 | Go to Symptoms - HVAC Systems - Manual |
| 2 | Operate the blower motor at each speed. Does the blower motor operate at any speed? |
Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
| 3 |
|
Go to Step 12 | Go to Step 4 |
| 4 | Test the blower motor supply voltage circuit for an open. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 16 | Go to Step 5 |
| 5 | Test the blower motor ground circuit for an open between the blower motor and S223. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 16 | Go to Step 6 |
| 6 | Test that the heater relay is open between terminals 3 and 5 and that there is continuity between terminals 3 and 4. Did the relay test OK? |
Go to Step 7 | Go to Step 11 |
| 7 | Test the heater relay coil and switch supply voltage circuits for an open. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 16 | Go to Step 8 |
| 8 | Test the heater relay control circuit for an open. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 16 | Go to Step 9 |
| 9 | Test the blower switch ground circuit for an open. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 16 | Go to Step 10 |
| 10 | Inspect for a poor connection at the harness connector of the blower switch. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 16 | Go to Step 13 |
| 11 | Inspect for a poor connection at the harness connector of the heater relay. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 16 | Go to Step 14 |
| 12 | Inspect for a poor connection at the harness connector of the blower motor. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 16 | Go to Step 15 |
| 13 | Replace the blower switch. Refer to Blower Switch Replacement
. Did you complete the replacement? |
Go to Step 16 | - |
| 14 | Replace the heater relay. Refer to Blower Motor Relay Replacement
. Did you complete the replacement? |
Go to Step 16 | - |
| 15 | Replace the blower motor. Refer to Blower Motor Replacement
. Did you complete the replacement? |
Go to Step 16 | - |
| 16 | Operate the system in order to verify the repair. Did you correct the condition? |
System OK | Go to Step 3 |