Ignition "OFF"
Disconnect Driver Direction actuator and A/C control Module main harness connector.
Connect(+) terminal of battery to DEF(+) of Driver Direction actuator and (-) terminal to VENT(-). (Component side)
Verify that the Driver Direction actuator operates to the DEF position.
Verify that the Driver Direction actuator operates to the VENT position with reverse connecting. (VENT(+) and DEF(-) ). (Component side)
Specification : Refer the specifications in Fig.1)
Actuator harness | DEF (+) | VENT (-) | Door position |
Battery terminal | 12 V | ground | DEF.Mode |
ground | 12 V | VENT.Mode |
Fig.1) ※ Function of the actuator motor according to terminal connection type. (observe safety regulations)
Is "Door position" display near the specified value?
 | ▶ Go to "Check potentiometer" procedure. |
 | ▶ Substitute with a known-good Driver Direction actuator and check for proper operation. If the problem is corrected, replace Driver Direction actuator and then go to "Verification of Vehicle Repair" procedure. |
Ignition "OFF"
Connect Driver Direction actuator and A/C control Module main harness connector.
Ignition "ON"
Measure voltage between Signal(F/B) terminal of Driver Direction actuator harness connector and Sensor ground(-) terminal of A/C-Module harness connector .(Component side)
Specification : Refer the specifications in Fig.2)
Mode Door Position | Voltage |
VENT | 0.3 |
BI-LEVEL | 1.4 |
FLOOR | 2.5 |
MIX | 3.6 |
DEF | 4.7 |
Fig.2) ※ Voltage value of Direction potentiometer as a function of position of mode switch
Is "voltage" display near the specified value?
| ▶ 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 Driver Direction actuator and check for proper operation. If the problem is corrected, replace Driver Direction actuator and then go to "Verification of Vehicle Repair" procedure. |
