Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information
981 3190 Replaced by 9511428 981 3190 Replaced by 951 1428 998 8686 Replaced by 9511532 998 8686 Replaced By 9511532
Condition




Shift solenoids S2 and S1 operate in tandem to control gear-shifting. The solenoids are controlled by power stages in the transmission control module (TCM). The transmission control module (TCM) opens the power stages to activate the solenoids and sends a voltage through the circuit. Solenoid S2 is activated in back-up (reverse), 1st and 2nd gears. Diagnostic trouble code (DTC) AT- 222 is stored if the transmission control module (TCM) registers an open-circuit or short-circuit to supply voltage in the solenoid S2 circuit when the solenoid should not be activated.
Diagnostic trouble code (DTC) AT-222 is also stored if the control module registers a short-circuit in the power stage for solenoid S2 when it should not be activated, and the gear shift selector is in position D, 3 or L. Solenoid S2 cannot be activated or is activated constantly (depending on fault cause).

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

Possible source
- Open-circuit in the signal cable.
- Short-circuit to supply voltage in the signal cable.
- Open-circuit in power ground.
- Defective solenoid.
- Contact resistance in the terminals.
- Fault in control module.

Fault symptom[s]
- The warning lamp in the combined instrument panel flashes.
- Deterioration in performance because the transmission control module (TCM) prevents activation of the solenoids, this stops gear-shifting. The transmission only operates in 3rd gear in positions 3 and L, 4th gear in position D and back-up (reverse) gear in position R. Shifting can only be carried out manually between 3rd, 4th, and back-up (reverse) gear. If there is a short-circuit to supply voltage in the solenoid circuit the transmission will probably only operate in 1st gear.
- No line pressure solenoid STH control, resulting in constant maximum line pressure. This leads to harsher shifting and gear meshing.
- No lock-up function.