Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information

Condition




Shift solenoids S2 and S1 operate in tandem to control gear-shifting. The solenoids are controlled by amplifiers in the transmission control module (TCM). The transmission control module (TCM) opens the amplifiers to activate the solenoids and sends a voltage through the circuit. Solenoid S2 is activated in reverse, 2nd and 3rd gears. Diagnostic trouble code (DTC) TCM-0007 is stored if the control module registers that the signal is too high in the circuit for the solenoid when the solenoid should not be activated.

Substitute value
- The control module "Limp Home" program has been initiated.

Possible source
- Short-circuit to supply voltage in the signal cable.

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 and leads to harsher shifting and gear engagement.
No shifting - because the transmission control module (TCM) prevents activation of the solenoids. This prevents 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.