Nissan Maxima Service and Repair Manual: B2192 ID discord, IMMU-ECM

Description

BCM performs the ID verification with ECM that allows the engine to start. Start the engine if the ID is OK.

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 B2192 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to SEC-29, "DTC Logic".

  • If DTC B2192 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to SEC-30, "DTC Logic".

DTC CONFIRMATION PROCEDURE

1.PERFORM DTC CONFIRMATION PROCEDURE

  1.  Turn ignition switch ON under the following conditions:

    •  CVT selector lever is in the P or N position.

    •  Do not depress the brake pedal.

  2.  Check "Self Diagnostic Result" with CONSULT.

Diagnosis Procedure

1.PERFORM INITIALIZATION

Perform initialization with CONSULT. Re-register all Intelligent Keys.

For initialization and registration of Intelligent Key, refer to CONSULT Immobilizer mode and follow the onscreen instructions.

    B2191 difference of key
    Description Performs ID verification through BCM and Intelligent Key when push-button ignition switch is pressed. Prohibits the start of engine when an unregistered ID of Intelligent Key is us ...

    B2193 chain of ECM-IMMU
    Description BCM performs the ID verification with ECM that allows the engine to start. Start the engine if the ID is OK. ECM prevents the engine from starting if the ID is not registered. BCM st ...

    Other materials:

    Mechanical key
    The Intelligent Key contains the mechanical key, which can be used in case of a discharged battery. To remove the mechanical key, release the lock knob on the back of the Intelligent Key. To install the mechanical key, firmly insert it into the Intelligent Key until the lock knob return ...

    Key cylinder switch
    Description The main power window and door lock/unlock switch detects condition of the door key cylinder switch and transmits to BCM as the LOCK or UNLOCK signal. Component Function Check 1.CHECK DOOR KEY CYLINDER SWITCH INPUT SIGNAL Check KEY CYL UN-SW, KEY CYL UN-SW in "DATA MONITOR" mode ...

    Engine maintenance (VQ35DE)
    DRIVE BELTS DRIVE BELTS : Checking Drive Belts Idler pulley Drive belt Power steering oil pump Drive belt auto-tensioner Crankshaft pulley Idler pulley A/C compressor Generator Indicator  New drive belt range Possible use range View D Engine front WA ...

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    Nissan Maxima Service and Repair Manual

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