Transmission Control Systems

1. MEASURE SIGNAL VOLTAGE INPUT OF TCU.
a. Turn ignition switch ON (with engine OFF).
b. Measure signal voltage input of TCU.

Connector & Terminal/Specified value
(B44) No. 5 - Body /10 V, min.

2. CHECK HARNESS BETWEEN TCU AND ECU (MPFI).
a. Disconnect connector from TCU.
b. Disconnect connector from ECU.
c. Measure resistance between TCU connector and ECU connector.

Connector & Terminal/Specified value
(B44) No. 5 - (B56) No. 16/0 ohms
(B44) No. 5 - Body/1 Mohm, min.