Diagnostic Trouble Code (DTC) Information

Condition 

Fig 1: Identifying Transmission Control Module (TCM)

Courtesy of VOLVO CARS CORPORATION

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. Diagnostic trouble code (DTC) TCM-0016 is stored if the control module registers an internal fault in one of the amplifier circuits.

Substitute Value 

• The control module "Limp Home" program initiated.

Possible Source 

• Defective control module.

Fault symptom[s] 

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

HINT: Harsh gear shifting can be caused by: 

• No adaptation of the gear slippage times at high altitude (High Altitude Compensation).
• No reduction of line pressure when shifting.
• No torque limiting request to engine control module (ECM) when shifting.

HINT: No shifting - because the transmission control module (TCM) prevents activation of the solenoids. This stops gear-shifting.