Trouble Code Conditions

SPECIAL TOOLS
Volvo scan tool No. 998 8686, or equivalent

CONDITION
Lock-up solenoid SL controls the transmission lock-up function. Solenoid SL operates when battery voltage is applied 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-333 is posted if the TCM registers a short-circuit to ground in the solenoid SL circuit when the solenoid should be activated. Solenoid SL cannot then be activated.

SUBSTITUTE VALUE
The TCM "Emergency mode 1'' program has been initiated.

POSSIBLE SOURCE
- Short-circuit to ground in signal cable.
- Defective solenoid
- Defective control module

FAULT SYMPTOM(S)
- No lock-up function.
- No adaption of the gear slippage times at high altitude (High Altitude Compensation).

TESTING PROCEDURE
Start fault-tracing at Short-circuit to ground. Short-Circuit To Ground