[55B] AUTOMATIC AIR CONDITIONER - - TROUBLESHOOTING - SYMPTOM PROCEDURES - INSPECTION PROCEDURE 5: The blower air volume cannot be changed. | PRINT PAGE / INDEX / PRIOR / NEXT

INSPECTION PROCEDURE 5: The blower air volume cannot be changed.
| COMMENTS ON TROUBLE SYMPTOM If the blower air volume can not be changed when the blower switch is operated, the circuit between blower motor and A/C-ECU may be defective.
| POSSIBLE CAUSES Blower motor (blower linear controller) Damaged the wiring harness or connectors Malfunction of the automatic air conditioner control panel (A/C-ECU)
| DIAGNOSIS
| Step 1. MUT-II/III actuator test Carry out the actuator test. Item 01, 02, 03, 04: Blower motor Q: Does the blower motor work normally? YES: Replace the automatic air conditioner control panel (A/C-ECU) NO: Go to Step 2.
| Step 2. Connector check: C-27 A/C-ECU connector and C-32 blower linear controller connector Q: Is the check result normal? YES: Go to Step 3. NO: Repair the connector.
| Step 3. Check the wiring harness between C-27 A/C-ECU connector terminal No.2 and C-32 blower linear controller connector terminal No.5. Check the input line for open or short circuit. Q: Is the check result normal? YES: Replace the air conditioner control panel (A/C-ECU) or the blower motor (blower linear controller). NO: Repair the wiring harness.

[55B] AUTOMATIC AIR CONDITIONER - - TROUBLESHOOTING - SYMPTOM PROCEDURES - INSPECTION PROCEDURE 5: The blower air volume cannot be changed. | PRINT PAGE / INDEX / PRIOR / NEXT

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