STEP 1. Check of short to power supply, short to ground, and open circuit in INFP, INFG line between the inside transmission antenna assembly (front) connector and the KOS-ECU connector.
STEP 3. Check whether the diagnostic trouble code is stored again.
(1) Erase the DTC.
(2) Turn the power supply mode of the engine switch from OFF to ON.
(3) Check if the DTC is stored.
(4) Turn the power supply mode of the engine switch from ON to OFF.
Is the DTC stored?
Replace KOS-ECU and register the ID codes (Refer to ). Intermittent malfunction is suspected (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Deal with Intermittent Malfunction ).