RM36D0EC _52 Drivetrain _138817 K121F CVT _0596468 CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM D

K121F CVT  CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM  CHECK FOR INTERMITTENT PROBLEMS  


HINT:

Troubleshoot malfunctions with the ECM in check mode. Intermittent problems are easier to detect with the GTS when the ECM is in check mode. In check mode, the ECM uses 1-trip detection logic, which is more sensitive to malfunctions than normal mode (default), which uses 2-trip detection logic.


1.

Clear the DTCs.

Click hereDrivetrain>K121F (CVT)>CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM>DTC CHECK / CLEAR

2.

Switch the ECM from normal mode to check mode using the GTS.

Click hereDrivetrain>K121F (CVT)>CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM>CHECK MODE PROCEDURE

3.

Perform a simulation test.

Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING

4.

Check and wiggle the harnesses, connectors and terminals.

Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>ELECTRONIC CIRCUIT INSPECTION PROCEDURE