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INSPECTION PROCEDURE 5: Blower Air Amount cannot be Changed.
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COMMENTS ON TROUBLE SYMPTOM
If the blower air amount can not be changed when the blower switch is operated, the blower switch may be defective.
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TROUBLESHOOTING HINTS
- Malfunction of the resistor
- Damaged the wiring harness or connectors
- Malfunction of the blower switch
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| Step 1. Check that the blower motor operates when the blower switch is moved to the "4 (HI)" position. - Turn the ignition switch to the "ON" position.
- Turn the blower switch to the "4 (HI) " position.
Q: Is the check result normal?
YES:
Go to Step 2  .
NO:
Refer to Inspection procedure 4 "Blower fan and motor does not turn  ."
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| Step 2. Check the blower switch continuity.
Refer to .
Q: Is the check result normal?
YES:
Go to Step 3 .
NO:
Replace the blower switch.
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| Step 3. Check the resistor resistance value.
Refer to .
Q: Is the check result normal?
YES:
Go to Step 4 .
NO:
Replace the resistor.
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| Step 4. Connector check: C-08 blower switch connector and C-11 resistor connector Q: Is the check result normal?
YES:
Go to Step 5 .
NO:
Repair or replace the connector.
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| Step 5. Check the wiring harness between C-08 blower switch connector (terminals 1, 4 and 5) and C-11 resistor connector (terminals 4, 1 and 3). Q: Is the check result normal?
YES:
Go to Step 6 .
NO:
Repair the wiring harness.
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| Step 6. Connector check: C-11 resistor connector and C-12 blower motor connector Q: Is the check result normal?
YES:
Go to Step 7 .
NO:
Repair or replace the connector.
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| Step 7. Check the wiring harness between C-12 blower motor connector (terminal 1) and C-11 resistor connector (terminal 2). Q: Is the check result normal?
YES:
No action to be taken.
NO:
Repair the wiring harness.
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