Diagnostic trouble code (DTC) information

Condition 

Fig 1: Identifying Lock-Up Solenoid, SL

Courtesy of VOLVO CARS OF NORTH AMERICA.

The lock-up solenoid SL controls the transmission lock-up function. Solenoid SL operates when it receives voltage from the control module and is activated under different driving conditions depending on road speed, throttle position and the driving mode selected. Diagnostic trouble code (DTC) TCM-0013 is stored if the control module registers that the signal in the solenoid SL circuit is missing when the solenoid should be activated. Solenoid SL cannot then be activated.

Substitute Value 

• The control module does not activate the lock-up solenoid.

Possible Source 

• Contact resistance in the terminals.
• Open-circuit in the signal cable.
• Defective solenoid.

Fault symptom[s] 

• General orange warning lamp lit.
• Malfunction indicator lamp (MIL) lit.
• No lock-up function.
• Harsh gear shifting.