6531620

Check actuator motor

(1)

Ignition "OFF".

(2)

Disconnect DR Air Mix actuator.

(3)

Connect (+) terminal of battery to terminal 3 of Air Mix actuator and (-) terminal to terminal 4

(4)

Verify that the Air mix actuator(Temperature actuator) operates to the "cool" or "warm" position.

(5)

Dose the actuator work properly?

YES

Go to "Check potentiometer" procedure.

Substitute with a known-good actuator and check for proper operation. If the problem is corrected, replace actuator and then go to "Verification of Vehicle Repair" procedure.

Check actuator potentiometer

(1)

Ignition "ON".

(2)

Connect DR Air Mix actuator.

(3)

Measure voltage between terminal "6" and "7" of Air Mix actuator while operating the temp switch.

Specification : Refer the specifications in fig3)

(4)

Is the measured voltage within specifications in fig3)?

YES

Check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "Verification of Vehicle Repair" procedure.

Substitute with a known-good actuator and check for proper operation. If the problem is corrected, replace actuator and then go to "Verification of Vehicle Repair" procedure.