Shift motor is used to change working range of transfer by utilizing Auto/low selection switch.
AUTO ?LOW Mode,LOW ? AUTO Mode
Position incoder provides feedback from the shift motor to the TCCU.
4 switch signals, from encoder, provide information on rotational direction and location of shift motor.
The MPS(Motor Position Sensor) receives 5 volts from the TCCU.
In cases where the mode switch is changes; the shift motor operates, and MPS contact point creates an ON/OFF signal.
When 5 volts is recieved by the TCCU, it monitors operation of shift motor.
This trouble code is set when motor has open circuit or is shorted to battery.
Item
Detecting Condition
Possible Cause
DTC Strategy
? Motor open/shorted to Battery
? Power supply malfunction.
? Shift motor,TCCU connector looseness and poor terminal to wire connection.
? Shift motor circuit open or short to B+.
? Faulty TCCU .
Enable Conditions
? Ignition cycle
Threshold Value
? V<4.0
Diagnostic Time
? 1.0 sec
MIL on condition
? 0.5 Hz
Fail Safe
? No Shifts