Celica L4-1998cc 2.0L DOHC (3S-GE) (1986)
Air Door Actuator / Motor: Testing and Inspection
Air Mix Servomotor
Inspect servo motor operation.
1. With the positive (+) battery lead connected to terminal 8, and the negative (-) battery lead connected to terminal 2, check that the lever moves
smoothly from WARM to COOL.
NOTE: This check is should not be performed if the wire harness or any of the seven poles connector are corroded or damaged in any way.
2. With the positive (+) battery lead connected to terminal 2, and the negative (-) battery lead connected to terminal 8, check that the lever moves
smoothly from COOL to WARM.
NOTE: This check is should not be performed if the wire harness or any of the seven poles connector are corroded or damaged in any way.
3. While operating the servo motor from either points (1) or (2), measure the resistance values of terminals 1 and 14.
Position
Resistance (Ohms)
COOL
1,900 +/- 100
WARM
200 +/- 50
The resistance values from COOL to WARM will successively decrease.