Diagnostic trouble code (DTC) information
Condition
Solenoid S1 operates in tandem with solenoid S2 to control gear-shifting. Diagnostic trouble code (DTC) TCM-0003 is stored if the control module registers that the signal is too low in the circuit for solenoid S1 when the solenoid should be activated. Solenoid S1 cannot then be activated.
Substitute Value
- The control module "Limp Home" program initiated.
Possible Source
- Short-circuit to ground in signal cable.
- Defective solenoid.
Fault symptom[s]
- General orange warning lamp lit.
- Malfunction indicator lamp (MIL) lit.
- No lock-up function.
- Harsh gear shifting.
- No shifting.
HINT: Harsh shifting - due to disabled line pressure solenoid STH control. This results in constant maximum line pressure.
HINT: No shifting - because the transmission control module (TCM) prevents activation of the solenoids. This stops gear-shifting. The transmission only operates in 3rd gear in positions 1 and 2, 4th gear in positions D and 3, and reverse gear in position R. Shifting can only be carried out manually between 3rd, 4th and reverse gears.