Blower Motor Does Not Operate

Step 1: Check fuse/Relay




1. Check fuse.
2. If a fuse is open, check for a sort circuit in wiring harness before replacing fuse.
3. If fuse is OK, proceed to inspection.

Inspection

Blower relay




1. Disconnect blower relay.




2. Check for continuity between following terminals of the relay.
3. If not as specified, replace relay.
4. If correct, go to next step.
5. Apply 12 V to terminal 85 and ground the terminal 86.




6. Check for continuity between terminals 87 and 30.
7. If not as specified, replace the relay.
8. If fuse is OK, proceed to inspection.

Step 2: Check voltage at blower motor

1. Turn the ignition switch to ON position.
2. Verify that the blower switch is in OFF position.




3. Measure voltage at the following terminal of blower motor connector G-02.

Step 3: Check voltage at blower motor resistor assembly

1. Turn the ignition switch to ON position.
2. Verify that the blower and A/C switches are in OFF position.




3. Measure voltage at the following terminals of blower motor resistor connector G-03.

Step 4: Check voltage at blower switch

1. Turn the ignition switch to ON position.
2. Verify that the blower and A/C switches are in OFF position.




3. Measure voltage at the following terminals of blower switch connector G-04.

Step 5: Check ground at blower switch

1. Turn the ignition switch to OFF position.
2. Verify that the blower and A/C switches are in OFF position.




3. Use ohmmeter to check continuity from ground to following terminal of blower switch connector G-04.
4. Turn the blower switch to ON position.




5. Use ohmmeter to check continuity from ground to following terminal of blower switch connector G-04.

Inspection

Blower switch
1. Disconnect blower switch.




2. Check for continuity between following terminals of the blower switch.
3. If not as specified, replace the blower switch.