Trouble Code Conditions

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Trouble Code Conditions
- Lock-up solenoid SL controls the transmission lock-up function. Solenoid SL operates when it receives battery voltage from the transmission control module (TCM) and is activated during different driving conditions depending on road speed, throttle position and the driving mode selected. Diagnostic trouble code (DTC) AT-331 is stored if the transmission control module registers a short-circuit to supply voltage in the solenoid SL circuit when the solenoid should not be activated. Solenoid SL is probably permanently activated.

Substitute value(s)
- The transmission control module "Emergency mode I" program has been initiated.

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

Fault symptom(s)
- Since the solenoid is permanently activated the lockup function is permanently engaged on 2nd, 3rd and 4th gears. Harsh gear shifting. Engine braking on 2nd, 3rd and 4th gears.
- Start fault-tracing. Short Circuit To Supply