Transmission Control Systems

1. MEASURE SIGNAL VOLTAGE INPUT OF TCU.
a. Turn ignition switch ON (with engine OFF).
b. Measure signal voltage input emitted from throttle sensor with accelerator pedal fully depressed.


Connector & Terminal/Specified value
(B44) No. 8 - No. 8/
4.4 - 4.8 V (Throttle fully closed)
0.5 - 1.3 V (Throttle fully open)

2. CHECK HARNESS/CONNECTOR BETWEEN TCU AND THROTTLE SENSOR.
a. Disconnect connector from TCU.
b. Disconnect connector from throttle sensor.
c. Measure resistance between TCU and throttle sensor connectors.


Connector & Terminal/Specified value
(B44) No. 7 - (E8) No.2/0 ohms
(B44) No. 7 - Body /1 Mohm min.
(B44) No. 8 - (E8) No.4/0 ohms
(B44) No. 8 - Body /1 Mohm min.





3. CHECK THROTTLE SENSOR.
a. Disconnect connector from throttle sensor.
b. Measure resistance between throttle sensor terminals.

Connector & Terminal/Specified value
No.2 - No.4/
10 - 12 K Ohm (Throttle fully closed)
3 - 5 K Ohm (Throttle fully open)