3.
Measure voltage value between terminal "1" of A/C control unit and chassis ground.
1)
Specification : 5V
Engine "ON".
Disconnect DR Direction Actuator.
Measure voltage value between terminal "1" of A/C control unit and chassis ground.
Specification : 5V
Is the measured voltage within specifications?
YES
Go to "Check DR Direction Actuator" procedure.
NO
Substitute with a known-good A/C Control Unit and check for proper operation.
If the problem is corrected, replace A/C Control Unit and then go to "Verification of Vehicle Repair" procedure.
Check actuator motor
Ignition "OFF".
Disconnect DR Direction Actuator.
Connect (+) terminal of battery to one motor terminal and (-) terminal to the other motor terminal of DR Direction actuator
Dose the actuator work properly?
YES
Go to "Check potentiometer" procedure.
NO
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
Ignition "ON".
Connect DR Direction Actuator.
Measure voltage between terminal "5" and "6" of DR Direction Actuator while operating the temp switch.
Specification : Refer the specifications in fig3)
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.
NO
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.
