Nissan Maxima. Manual - part 221

BCS

DIAGNOSIS SYSTEM (BCM)

BCS-31

< SYSTEM DESCRIPTION >

[BCM]

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INFOID:0000000009467056

NOTE:

The Signal Tech II Tool (J-50190) can be used to perform the following functions. Refer to the Signal Tech II

User Guide for additional information.

• Activate and display TPMS transmitter IDs

• Display tire pressure reported by the TPMS transmitter

• Read TPMS DTCs

• Register TPMS transmitter IDs

SELF DIAGNOSTIC RESULT

NOTE:

Before performing Self Diagnostic Result, be sure to register the ID, or else the actual malfunction may be dif-

ferent from that displayed on CONSULT.

Refer to 

BCS-64, "DTC Index"

.

DATA MONITOR

ACTIVE TEST

WORK SUPPORT

Monitor Item

Condition

Specification

AIR PRESS FL 

• Drive vehicle for a few minutes.

                           or

• Ignition switch ON and activation tool is trans-

mitting activation signals.

Tire pressure (kPa, kg/cm

2

 or Psi)

AIR PRESS FR

AIR PRESS RR

AIR PRESS RL

ID REGST FL1

Ignition switch ON

Registration ID: Green
No registration: Red

ID REGST FR1

ID REGST RR1

ID REGST RL1

WARNING LAMP

Ignition switch ON

Low tire pressure warning lamp on: ON
Low tire pressure warning lamp off: OFF

BUZZER

Ignition switch ON

Buzzer in combination meter on: ON
Buzzer in combination meter off: OFF

Test Item

Description

WARNING LAMP

This test is able to check tire pressure warning lamp operation [On/Off].

ID REGIST WARNING

This test is able to check ID regist warning chime operation [On/Off].

FLASHER

This test is able to check turn signal lamp operation [Off/LH/RH].

HORN

This test is able to check horn operation [On].

Support Item

Description

ID READ

The registered ID number is displayed.

ID REGIST

Refer to 

WT-6, "ID Registration Procedure"

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BCS-32

< DTC/CIRCUIT DIAGNOSIS >

[BCM]

U1000 CAN COMM CIRCUIT

DTC/CIRCUIT DIAGNOSIS

U1000 CAN COMM CIRCUIT

Description

INFOID:0000000009467057

Refer to 

LAN-6, "System Description"

.

DTC Logic

INFOID:0000000009467058

DTC DETECTION LOGIC

NOTE:

U1000 can be set if a module harness was disconnected and reconnected, perhaps during a repair. Confirm

that there are actual CAN diagnostic symptoms and a present DTC by performing the Self Diagnostic Result

procedure.

Diagnosis Procedure

INFOID:0000000009467059

1.

 PERFORM SELF DIAGNOSTIC

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

2. Check “SELF- DIAG RESULTS”.
Is “CAN COMM CIRCUIT” displayed?

YES

>> Perform CAN Diagnosis as described in DIAGNOSIS section of CONSULT Operation Manual.

NO

>> Refer to 

GI-41, "Intermittent Incident"

.

CONSULT Display

DTC Detection Condition

Possible cause

CAN COMM CIRCUIT
[U1000]

When any listed module cannot communicate with CAN 
communication signal continuously for 2 seconds or 
more with ignition switch ON

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 (IPDM E/R)

BCS

U1010 CONTROL UNIT (CAN)

BCS-33

< DTC/CIRCUIT DIAGNOSIS >

[BCM]

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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-79, "Removal and Installation"

.

CONSULT display de-

scription

DTC Detection Condition

Possible cause

CAN COMM CIRCUIT
[U1010]

BCM detected internal CAN communication circuit malfunction.

BCM

BCS-34

< DTC/CIRCUIT DIAGNOSIS >

[BCM]

U0415 VEHICLE SPEED SIG

U0415 VEHICLE SPEED SIG

Description

INFOID:0000000009467062

U0415 is displayed if any unusual condition is present in the reception status of the vehicle speed signal from

the ABS actuator and electric unit (control unit).

DTC Logic

INFOID:0000000009467063

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

 DTC CONFIRMATION

1. Erase the DTC.

2. Turn ignition switch OFF.

3. Perform the "SELF-DIAG RESULTS" of BCM with CONSULT, after the ignition switch has been turned ON

for 2 seconds or more.

Is any DTC detected?

YES

>> Refer to 

BCS-64, "DTC Index"

.

NO

>> Inspection End. 

Diagnosis Procedure

INFOID:0000000009467064

1.

 ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF DIAGNOSTIC RESULT

Perform Self Diagnostic Result of ABS actuator and electric unit (control unit) with CONSULT. Refer to 

BRC-

21, "CONSULT Function (ABS)"

.

Is any DTC detected?

YES

>> Perform the trouble diagnosis related to the detected DTC. Refer to 

BRC-82, "DTC No. Index"

.

NO

>> GO TO 2.

2.

 CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY AND GROUND

CIRCUIT
Check ABS actuator and electric unit (control unit) power and ground. Refer to 

BRC-32, "Diagnosis Proce-

dure"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness or connectors.

3.

 COMBINATION METER SELF DIAGNOSTIC RESULT

Perform Self Diagnostic Result of METER M&A with CONSULT. Refer to 

MWI-29, "CONSULT Function

(METER/M&A)"

.

Is any DTC detected?

YES

>> Perform the trouble diagnosis related to the detected DTC. Refer to 

MWI-51, "DTC Index"

.

NO

>> Refer to 

GI-41, "Intermittent Incident"

.

DTC

Display contents of 

CONSULT

Diagnostic item is detected when ...

Probable malfunction location

U0415

VEHICLE SPEED SIG
[U0415]

When the vehicle speed signal received from 
the ABS actuator and electric unit (control 
unit) remains abnormal for 2 seconds or more.

• ABS actuator and electric unit (control unit)
• BCM
• Combination meter