Electrical Components Inspections

INSPECTION OF A/T CONTROL UNIT



- Measure voltage between each terminal and terminal (15) or (48) by following "A/T CONTROL UNIT INSPECTION TABLE".

Pin Connector Terminal Layout:

- Pin connector terminal layout.


A/T CONTROL UNIT INSPECTION TABLE

Terminal No: 1 - 8:

Terminal No: 9 - 22:

Terminal No : 23 - 36:

Terminal No : 37 - 48:

INHIBITOR SWITCH



1. Disconnect control cable from manual shaft.










2. Check continuity between terminals (1) and (3) and between terminals (4) and (2), (5), (6), (7), (8), (9) while moving selector lever through each position.




3. If N.G., adjust inhibitor switch.
4. Check terminal continuity again.
5. If N.G., replace inhibitor switch.


FLUID TEMPERATURE SENSOR
- For removal and installation, refer to ON-VEHICLE SERVICE". Service and Repair






- Check resistance between two terminals while changing temperature as shown above.


REVOLUTION SENSOR
- For removal and installation, refer to "ON-VEHICLE SERVICE". Service and Repair







- Check resistance between terminals (1), (2) and (3)


TIMING SOLENOID VALVE
- For removal and installation, refer to "ON-VEHICLE SERVICE". Service and Repair



- Check resistance between two terminals.

Resistance: Timing solenoid valve 20 - 40 ohm

4-UNIT SOLENOID VALVE ASSEMBLY (Shift solenoid valve A, B, torque converter clutch solenoid valve and line pressure solenoid valve)
- For removal and installation, refer to "ON-VEHICLE SERVICE". Service and Repair







- Check resistance between terminals of each solenoid.


DROPPING RESISTOR



- Check resistance between two terminals.

Resistance: 11.2 - 12.8 ohm


OVERDRIVE SWITCH







- Check continuity between two terminals.