Check For Intermittent Problems

HINT: 

Inspect the vehicle's hybrid vehicle control ECU using check mode. Intermittent problems are easier to detect with the Techstream when the hybrid vehicle control ECU is in check mode. In check mode, the hybrid vehicle control ECU 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. Refer to DTC CHECK / CLEAR .
2. Switch the hybrid vehicle control ECU from normal mode to check mode using the Techstream. Refer to CHECK MODE PROCEDURE .
3. Perform a simulation test. Refer to HOW TO PROCEED WITH TROUBLESHOOTING .
4. Check and wiggle the harness(es), connector(s) and terminal(s). Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE .