Case IH 2712 – ZTC: ZTC - CAN message PTCTL2 signal TLOP error or not available

The fault indicates a Controller Area Network (CAN) bus communication error. Specifically, the PTCTL2 (Powertrain Control 2) message, which carries the TLOP (Transmission Lubrication Oil Pressure) signal, is experiencing a timeout, is invalid, or is completely unavailable on the network. This means the control system is not receiving the required transmission lubrication oil pressure data to safely monitor and operate the transmission.

• Steiger T4B
• Steiger

1. 1

   Check the CAN bus wiring harness for broken wires, defective connectors, or open circuits between the transmission sensors, the engine controller, and the ZTC module.

2. 2

   Test the CAN network for short circuits to vehicle ground or battery voltage, which can cause interference and message timeouts.

3. 3

   Verify the physical Transmission Lubrication Oil Pressure sensor and its supply voltage to ensure it is not electrically defective.

1. 1

   Locate the break or short in the wiring harness

   Locate the break or short in the wiring harness between the TLOP sensor and the ZTC.

2. 2

   Repair the damaged wire/connector

   Repair the damaged wire or connector found during the harness inspection.

3. 3

   Replace the Transmission Lubrication Oil Pressure sensor

   Replace a failed Transmission Lubrication Oil Pressure sensor if it is internally shorted.