Nissan Pathfinder. Manual - part 1089

INSPECTION AND ADJUSTMENT

SRC-41

< BASIC INSPECTION >

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INSPECTION AND ADJUSTMENT

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Description

INFOID:0000000009176984

WARNING:

Always perform zero point reset using CONSULT when removing and installing the front passenger

seat or servicing the occupant classification system. If zero point reset is not performed, the OCS may

not operate normally, which may increase the risk of serious injury in a collision. 

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Re-
quirement

INFOID:0000000009176985

WORK PROCEDURE WHEN REPLACING OCS CONTROL UNIT

1.

PERFORM ZERO POINT RESET

Perform zero point reset. Refer to 

SRC-41, "ZERO POINT RESET : Special Repair Requirement"

.

>>  Inspection End.

ZERO POINT RESET
ZERO POINT RESET : Description

INFOID:0000000009176986

Zero point reset is an initializing procedure for the OCS (weight) sensors that must be performed using CON-

SULT when removing and installing passenger seat or servicing the OCS system. If zero point reset is not per-

formed, the initialization is incomplete and OCS may not operate normally.

NOTE:

• When reinstalling the passenger seat, the initial value for the OCS sensors may change, and the OCS may

not operate normally.

• When zero point reset is performed after removal and installation of passenger seat, CONSULT displays

”complete”.

ZERO POINT RESET : Special Repair Requirement

INFOID:0000000009176987

1.

PERFORM ZERO POINT RESET

1. Perform preliminary checks:

NOTE:

• Level the vehicle

• Minimize vibrations near the vehicle

• Remove any objects on passenger seat

• Do not touch the vehicle during zero point reset

2. Select START on ZERO POINT RESET from, WORK SUPPORT of “OCCUPANT DETECTION”.

3. “Zero point reset” starts.

>> GO TO 2.

2.

CONFIRM RESET

1. Check that "Complete" is displayed on “Zero point reset status”.

CAUTION:

• “Complete” may be displayed if the seat has been reinstalled, or “zero point reset” has already been

performed.

• ”Incomplete” may be displayed if a new seat is installed.

• Air bag warning lamp blinks in user mode if zero point reset is ”incomplete”.
Is zero point reset status "complete"?

YES

>> Print out “ZERO POINT RESET CURRENT STATUS” screen. Inspection end.

NO

>> Recheck the preliminary check items and perform zero point reset again.

SRC-42

< BASIC INSPECTION >

INTERMITTENT INCIDENT

INTERMITTENT INCIDENT

Inspection Procedure

INFOID:0000000009176988

INTERMITTENT TROUBLE

An intermittent incident may have occurred in the past but is not being detected currently. This DTC will not be

detected on SELF-DIAG [CURRENT], but may be viewed on SELF-DIAG [PAST] if the DTC has not been

erased.

Trouble Diagnosis with CONSULT

INFOID:0000000009176989

CHECK SRS REPAIR HISTORY

Refer to 

SRC-16, "SRS History Check"

.

U1000 CAN COMM CIRCUIT

SRC-43

< DTC/CIRCUIT DIAGNOSIS >

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DTC/CIRCUIT DIAGNOSIS

U1000 CAN COMM CIRCUIT

Description

INFOID:0000000009726852

CAN (Controller Area Network) is a serial communication system for real time application. It is an on-vehicle

multiplex communication system with high data communication speed and excellent error detection ability.

Many electronic control units are equipped into vehicles, and each control unit shares information and links

with other control units during operation. With CAN communication, control units are connected with two com-

munication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less wiring.

Each control unit transmits and receives data but selectively reads required data only. Refer to 

LAN-36, "CAN

COMMUNICATION SYSTEM : CAN Communication Signal Chart"

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DTC Logic

INFOID:0000000009726853

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM SELF-DIAGNOSIS

1. Turn ignition switch ON and wait for 7 seconds or more. 

2. Using CONSULT, perform SELF-DIAGNOSIS RESULTS of AIR BAG. 

3. Check if any DTC is displayed in the self-diagnosis results. 
Is DTC detected?

YES

>> Refer to 

SRC-43, "Diagnosis Procedure"

. 

NO

>> Refer to 

GI-49, "Intermittent Incident"

.

Diagnosis Procedure

INFOID:0000000009726854

1.

CHECK CAN COMMUNICATION SYSTEM

Check CAN communication system. Refer to 

LAN-20, "Trouble Diagnosis Flow Chart"

.

>> Inspection End.

CONSULT name

DTC

DTC detecting condition

Repair order

CAN COMMUNICATION FAILURE

U1000

When air bag diagnosis sensor unit is not 
transmitting or receiving CAN communi-
cation signals for 2 or more seconds.

Refer to 

SRC-43, "Diagnosis 

Procedure"

. 

SRC-44

< DTC/CIRCUIT DIAGNOSIS >

U1010 CONTROL UNIT (CAN)

U1010 CONTROL UNIT (CAN)

Description

INFOID:0000000009726855

Air bag diagnosis sensor performs self-tests on key ON. If CAN communication failure within control unit is

detected, DTC is set.

DTC Logic

INFOID:0000000009726856

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM SELF-DIAGNOSIS

1. Turn ignition switch ON. 

2. Using CONSULT, perform SELF DIAGNOSIS RESULTS of AIR BAG.

3. Check if DTC is displayed in the self-diagnosis results. 
Is DTC detected?

YES

>> Refer to 

SRC-44, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009726857

1.

REPLACE AIR BAG DIAGNOSIS SENSOR UNIT

Replace air bag diagnosis sensor unit. Refer to 

SR-27, "Removal and Installation"

.

>> Inspection End.

CONSULT name

DTC

DTC detecting condition

Repair order

CAN CONTROL UNIT FAILURE

U1010

CAN communication error is detected in 
control unit.

Refer to 

SRC-44, "Diagnosis 

Procedure"

.