01315 Transmission Control Module – NO Signal /Comunication

Fault code 01315 Transmission Control Module – NO Signal /Comunication indicate problem with automatic gear box. VW vehicle is fitted with DSG(direct shift gear ) gear box. DSG gear box is electronically controlled with dual clutch, multiple shaft. fualt code 01315 Transmission Control Module – NO Signal /Comunication store in control module when transimission control module send wrong signal to other control module or recieve no signal from other control module. there could be also the problem of power supply or ground or faulty gear mechatrnonic or vlave body.

Causes of 01315 Transmission Control Module – NO Signal /Comunication :

  • Blown fuse.
  • Broken wiring harness.
  • Faulty transmission control module.
  • Faulty abs control module.

Symptoms of 01315 :

  • No communication with TCM.
  • No crank no start.
  • Fault code store in control module.
  • Also transmission indication light P will start blinking.

How to trouble shoot :

There might be two difference problem for this fault code. one is problem of wiring harness, blown fuse or loose connection. the second one is faulty mechatronic,valve body or transmission control module (if present) it self.

CASE#1 :

check fuse in fuse box of transmission control module, if blown then change fuse. check power supply to the control module of gear if present. in some vehicle transmission control module is located out side the gear box. so if transmission control module is out side the gear box. check power supply, ground or CAN line of transmission control module. if all the power supply, ground and CAN line signal is good then go to check the failure of valve body present in the gear box. also power supply, ground of valve body and mechatronic fitted at the gear box.

If all the system like gear control unit, valve body mechatronic is located inside the gear box. then directly remove the socket of gear box and check power supply, ground, CAN line signal at the socket. if all the power supply, ground and CAN line is good. then it is clear that the problem is inside the gear box. Also check resistane of CAN line, after removing socket connect multimeter pin to the pin of CAN high and CAN low there should be 60 ohms. there might be the problem of mechatronic or valve body which causing to store fault code.

Solution of 01315 Transmission Control Module – NO Signal /Comunication :

  • Replace fualty or blown fuse.
  • Repair damage wiring harness.
  • Replace fautly transmission control module.
  • Also replace faulty mechatronic or valve body.

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