Inspection Procedure 4

BLOWER FAN AND MOTOR DOES NOT TURN.

DIAGNOSIS







STEP 1. Check the blower relay continuity.

Q: Is the blower relay continuity in good condition?

YES: Go to Step 2.
NO: Replace. Then go to Step 5.




STEP 2.Check the blower fan and motor operation.
When battery voltage is applied between the terminals, check that the motor operates.

Q: Is there any abnormal noise?

YES: Go to Step 3.
NO: Replace. Then go to Step 5.







STEP 3. Check the blower switch continuity.

Q: Is the blower switch continuity in good condition?

YES: Go to Step 4.
NO: Replace. Then go to Step 5.

Standard Value:

STEP 4. Check the resistor resistance value.
Use an ohmmeter to measure the resistance between the terminals as indicated. Check that the measured value is at the standard value.

Q: Is the measured value at the standard value?

YES: Go to Step 5.
NO: Replace. Then go to Step 5.

STEP 5. Check symptoms.

Q: Is the blower fan and motor turned?

YES: This diagnosis is complete. (If no malfunctions are not found in all steps, an intermittent malfunction is suspected. Refer to Introduction, How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction)
NO: Go to Step 1.