Smart Key System (for Start Function)

THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function): U0100, U0140, U0142, U0155: Lost Communication with ECM / PCM
U0155 - Lost Communication with Combination Meter

DESCRIPTION

These DTCs are stored when there is a CAN communication error between the certification ECU (smart key ECU assembly) and the ECM, main body ECU (multiplex network body ECU) or combination meter assembly.

HINT
When the cable is disconnected and reconnected to the negative (-) battery terminal, the power source mode returns to the state it was in before the cable was disconnected.





* *: Only detected while a malfunction is present and the engine switch is on (IG)

Vehicle Condition and Fail-safe Function when Malfunction Detected





HINT

Related Data List and Active Test Items





INSPECTION PROCEDURE

NOTICE:
* When using the Techstream with the engine switch off, perform either of the following: 1) Turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and vehicle begins, or 2) connect the Techstream to the vehicle, select the vehicle type under manual mode, and then enter the following menus: Body Electrical / Smart Key / Trouble Codes.
* After performing repairs, perform the operation that fulfills the DTC output confirmation operation, and then confirm that no DTCs are output again.

PROCEDURE

1. CHECK FOR DTC

(a) Note any DTCs that are output Smart Key System (for Start Function).

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