ENTRY AND START SYSTEM (for Start Function), Diagnostic DTC:U0100

DTC Code DTC Name
U0100 Lost Communication with ECM

DESCRIPTION

The power management control ECU*1 or power source control ECU*2 receives shift position information from 2 sources. It receives a shift position P signal from the shift lock control unit assembly via a direct line, and shift position information from the ECM via CAN. If the information from these 2 sources is inconsistent, this DTC will be stored.

Tech Tips

When the power management control ECU*1 or power source control ECU*2 is replaced with a new one and the cable is connected to the negative (-) battery terminal, the power source mode becomes the IG-ON mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.

DTC No. DTC Detection Condition Trouble Area
U0100 The shift position information from the ECM (via CAN) and the shift lock control unit assembly (direct line) is inconsistent.

  • CAN communication system

  • Power management control ECU*1

  • Power source control ECU*2

  • Wire harness or connector

*1: for 1KR-FE and 1NR-FE

*2: for 1ND-TV

WIRING DIAGRAM

Refer to CAN communication system Click here.

INSPECTION PROCEDURE

Refer to CAN communication system Click here.