Nissan Versa (N17): B2193, P1612 Chain of ECM-IMMU

Nissan Versa 2nd generation (N17) Service Manual / Body exterior, doors, roof & vehicle security / Security control system (SEC) / B2193, 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 B2193 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to SEC "DTC Logic".
If DTC B2193 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to SEC "Diagnosis Procedure".

DTC CONFIRMATION PROCEDURE

1.PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON.

2. Check "Self diagnostic result" with CONSULT.

Is DTC detected?

YES >> Refer to SEC "Diagnosis Procedure".

NO >> Inspection End.

Diagnosis Procedure

1.REPLACE BCM

1. Replace BCM. Refer to BCS "Removal and Installation".

2. Perform initialization with CONSULT.

For initialization, refer to CONSULT Immobilizer mode and follow the on-screen instructions.

Does the engine start?

YES >> Inspection End.

NO >> ECM is malfunctioning.

Replace ECM.
Perform ECM re-communicating function.

B2192, P1611 ID discord, IMMU-ECM

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 ...

B2195 Anti-scanning

Other materials:

Main power supply and ground circuit
Diagnosis Procedure 1.CHECK TCM POWER CIRCUIT 1 Turn the ignition switch OFF. Disconnect the TCM connector. Check the voltage between the TCM harness connector terminals and ground. Is the inspection result normal? YES >> GO TO 2. NO >> GO TO 4. 2.CHECK TCM POWER ...