DIAGNOSTIC CODE LISTINGS AND PROCEDURES
(WTEC III CONTROLS)
The following table presents information about the diagnostic codes which may
occur during the operation of the transmission. For additional information, refer to
TS2973EN Troubleshooting Manual for WTEC III Controls.
Code Listings And Procedures (WTEC III Controls)
CODES
QUICK CHECKS
MAIN
CODE
SUB
CODE
13
12
Check:
a. Battery direct ground and power connections are
tight and clean.
b. Vehicle batteries are charged.
c. Vehicle charging system is not over- or
under-charging.
d. VIM fuse is good.
e. VIM connections are tight, clean, and undamaged.
f. Vehicle manufacturer supplied wiring is correct.
g. ECU connectors are tight, clean, and undamaged.
ECU Input Voltage
Low
13
13
ECU Input Voltage
Medium Low
13
23
ECU Input Voltage
High
14
12, 23
Check:
a. Is transmission equipped with oil level sensor?
b. Engine speed sensor, output speed sensor,
temperature sensor, and oil level sensor are
working correctly.
c. Wiring harness has no opens, shorts-to-ground, or
shorts-to-battery.
Oil Level Sensor
21
12, 23
Check:
a. TPS connector is properly connected.
b. End of TPS cable is pulled out properly.
c. Engine fuel lever is in idle position.
d. Engine fuel lever provides proper amount of
stroke on TPS cable.
e. Wiring harness to TPS has no opens,
shorts-between-wires, or shorts-to-ground.
f. TPS for proper operation and resistance readings.
Throttle Position
Sensor
65
