Transmission Control Systems

1. MEASURE SIGNAL VOLTAGE INPUT OF TCU.
a. Raise vehicle and place safety stands.
On AWD models, raise all wheels off floor.
b. Start the engine. Set vehicle in 12 miles/h condition.
c. Measure signal voltage input of TCU.

Connector & Terminal/Specified value
(B44) No. 12 - (B46) No. 20 / AC 1 V, min.

2. CHECK HARNESS/CONNECTOR BETWEEN TCU AND VEHICLE SPEED SENSOR 1.
a. Disconnect connector from TCU.
b. Disconnect connector from transmission.

c. Measure resistance between TCU connector and transmission connector.

Connector & Terminal/Specified value
(B44) No. 12 - (B16) No. 16/0 ohms
(B44) No. 12 - Body /1 M Ohms min.
(B46) No. 20 - (B16) No. 9/0 ohms
(B46) No. 20 - Body /1 M Ohms min.

3. CHECK VEHICLE SPEED SENSOR 1.
a. Disconnect connector from transmission.
b. Measure resistance between transmission connector receptacle's terminals.

Connector & Terminal/Specified value
(E19) No 16 - No. 9/450 - 650 ohms