Transmission Control Systems

1. MEASURE SIGNAL VOLTAGE OUTPUT EMITTED FROM TCU.
a. Raise vehicle and support with safety stands. On 4-wheel drive models, raise all wheels off ground.
b. Warm up the engine and transmission.
c. Move selector lever to "D."
d. Measure signal voltage output emitted from TCU while idling the engine.

Connector & Terminal/Specified value
(B33) No. 14 - No. 10/10 - 14 V

2. CHECK HARNESS BETWEEN TCU AND SHIFT SOLENOID 1.
a. Disconnect connector from TCU.
b. Disconnect connector from transmission.
c. Measure resistance between TCU connector and transmission connector, and between TCU connector and body.

Connector & Terminal/Specified value
(B33) No. 14 - (B16) No. 3/0 ohms
(B33) No. 14 - Body/1 M Ohms min.
(B33) No. 10 - (B16) No. 4/0 ohms
(B33) No. 10 - Body/1 M Ohms min

3. CHECK SHIFT SOLENOID 1's GROUND LINE.
a. Disconnect connector from transmission.
b. Measure resistance between transmission connector receptacle and transmission case.

Connector & Terminal/Specified value
(E19) No. 4 - Transmission/0 ohms

4. CHECK SHIFT SOLENOID 1.
a. Disconnect connector from transmission.
b. Measure resistance between transmission connector receptacle's terminals.

Connector & Terminal/Specified value
(E19) No. 3 - No. 4/20 - 30 ohms