Without Intelligent Key System

P1612 CHAIN OF ECM-IMMU

Description

BCM performs the ID verification with ECM that allows the engine to start. BCM starts the communication with
ECM if ignition switch is turned ON and starts the engine if the ID is OK. ECM prevents the engine from starting if the ID is not registered.


DTC Logic


DTC DETECTION LOGIC

NOTE:
- If DTC P1612 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to
With Intelligent Key System.
- If DTC P1612 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to
With Intelligent Key System.






DTC CONFIRMATION PROCEDURE


1. PERFORM DTC CONFIRMATION PROCEDURE

1.Turn ignition switch ON.
2.Check "Self diagnosis result" with CONSULT.
Is DTC detected?
YES- .
NO- INSPECTION END


Diagnosis Procedure


1. REPLACE BCM

1.Replace BCM. Removal And Installation.
2.Perform initialization of BCM and registration of all ignition keys using CONSULT.
Does the engine start?
YES- INSPECTION END
NO- GO TO 2.

2. REPLACE ECM

Replace ECM. Without Intelligent Key System.
- INSPECTION END