Ignition "OFF"
Disconnect mode actuator and A/C control Module main harness connector.
Connect (+) terminal of battery to DEF(+) of mode actuator and (-) terminal to VENT(-) .(Component side)
Verify that the mode actuator operates to the DEF position.
Verify that the mode 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 Next 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 mode actuator and A/C control Module main harness connector.
Ignition "ON"
Measure voltage between Signal(F/B) terminal of mode actuator harness connector and Sensor ground(-) terminal of A/C control Module harness connector .(Component side)
Specification : Refer the specifications in Fig.2)
Mode Door Position | Voltage |
VENT | 0.3±0.15V |
BI-LEVEL | 1.4±0.4V |
FLOOR | 2.5±0.4V |
MIX | 3.6±0.4V |
DEF | 4.7±0.15V |
Fig.2) Voltage value of mode actuator 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 mode actuator and check for proper operation. If the problem is corrected, replace mode actuator and then go to "Verification of Vehicle Repair" procedure. |
