With Intelligent Key System

P1612 CHAIN OF ECM-IMMU

Description

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


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 under the following conditions.
-Selector lever is in the P or N position
-Do not depress brake pedal
2.Check "Self-diagnosis result" using CONSULT.
Is DTC detected?
YES- Go to .
NO- INSPECTION END


Diagnosis Procedure


1. REPLACE BCM

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

2. REPLACE ECM

Replace ECM. With Intelligent Key System.
- INSPECTION END