Nissan Altima L32. Manual - part 1271

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< FUNCTION DIAGNOSIS >

[SEDAN WITH INTELLIGENT KEY]

DIAGNOSIS SYSTEM (BCM)

IMMU : CONSULT-III Function (BCM - IMMU)

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DATA MONITOR

ACTIVE TEST

Monitor item 

Content

CONFRM ID ALL

Indicates [YET] at all time.
Switch to [DONE] when a registered Intelligent Key is inserted into the key slot.

CONFIRM ID4

CONFIRM ID3

CONFIRM ID2

CONFIRM ID1

TP 4

Indicates the number of ID which has been registered.

TP 3

TP 2

TP 1

PUSH SW

Indicates [ON/OFF] condition of push-button ignition switch.

KEY SW -SLOT

Indicates [ON/OFF] condition of key slot.

Test Item

Description

THEFT IND

This test is able to check security indicator operation [ON/OFF]. 

U1000 CAN COMM CIRCUIT

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COMPONENT DIAGNOSIS

U1000 CAN COMM CIRCUIT

Description

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CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-vehicle mul-

tiplex communication line with high data communication speed and excellent error detection ability. Modern

vehicle is equipped with many electronic control unit, and each control unit shares information and links with

other control units during operation (not independent). In CAN communication, control units are connected

with 2 communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less

wiring. Each control unit transmits/receives data but selectively reads required data only.

CAN Communication Signal Chart, refer to 

LAN-25, "CAN Communication Signal Chart"

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DTC Logic

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DTC DETECTION LOGIC

Diagnosis Procedure

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1.

PERFORM SELF DIAGNOSTIC

1. Turn ignition switch ON and wait for 2 seconds or more.

2. Check “Self Diagnostic Result”.
Is “CAN COMM CIRCUIT” displayed?

YES

>> Refer to 

LAN-8, "CAN Communication Control Circuit"

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NO

>> Refer to 

GI-42, "Intermittent Incident"

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CONSULT-III dis-

play description

DTC Detection Condition

Possible cause

CAN COMM CIR-
CUIT
[U1000]

When BCM cannot communicate CAN communication 
signal continuously for 2 seconds or more.

In CAN communication system, any item (or items) 
of the following listed below is malfunctioning.
• Transmission
• Receiving (ECM)
• Receiving (VDC/TCS/ABS)
• Receiving (METER/M&A)
• Receiving (TCM)
• Receiving (MULTI AV)
• Receiving (IPDM E/R)

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< COMPONENT DIAGNOSIS >

[SEDAN WITH INTELLIGENT KEY]

U1010 CONTROL UNIT (CAN)

U1010 CONTROL UNIT (CAN)

DTC Logic

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DTC DETECTION LOGIC

Diagnosis Procedure

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1.

 REPLACE BCM

When DTC U1010 is detected, replace BCM.

>> Replace BCM. Refer to 

BCS-96, "Removal and Installation"

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CONSULT-III display 

description

DTC Detection Condition

Possible cause

CAN COMM CIRCUIT
[U1010]

BCM detected internal CAN communication circuit malfunction.

BCM

B2013 ID DISCORD, IMMU-STRG

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B2013 ID DISCORD, IMMU-STRG

Description

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BCM performs the ID verification with the steering lock unit and releases the steering lock if both BCM and

steering lock unit ID are same. BCM starts the communication with the steering lock unit when Intelligent Key

is carried into the passenger compartment and the push-button ignition switch is pressed.

DTC Logic

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DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1. Lock steering.

2. Press the push-button ignition switch.

3. Check “Self Diagnostic Result” with CONSULT-III.
Is DTC detected?

YES

>> Refer to 

SEC-237, "Diagnosis Procedure"

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NO

>> Inspection End.

Diagnosis Procedure

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1.

PERFORM INITIALIZATION

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

For initialization and registration of Intelligent Key, refer to “CONSULT-III Operation Manual”.
Can the system be initialized and can steering lock be released with re-registered Intelligent Key?

YES

>> Steering lock unit was unregistered.

NO

>> Replace steering wheel lock unit.

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B2013

ID DISCORD, IMMU-
STRG

The ID verification results between BCM and steer-
ing control unit are NG. The registration is neces-
sary.

• Steering wheel lock unit