Smart Key System (For Start Function)

THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function): U0100, U0129, U0142, U0155: Lost Communication with ECM / PCM
U0155 - Lost Communication with Combination Meter

DESCRIPTION

The power management control ECU receives information from 2 sources. It receives information via a direct line and via the CAN communication line. If the information from these 2 sources is inconsistent, this DTC is stored.

HINT
When the power management control ECU is replaced with a new one and the cable is connected to the negative (-) battery terminal, the power source mode is reset to on (IG). When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.





INSPECTION PROCEDURE

PROCEDURE

1. CHECK FOR DTC

(a) Check for DTCs and note any codes that are output Smart Key System (for Start Function).

(b) Clear the DTCs Smart Key System (for Start Function).

(c) Recheck for DTCs Smart Key System (for Start Function).

Result





B -- GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) How to Proceed With Troubleshooting

A -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting