Nissan Pathfinder: Srs Air Bag Control System - Symptom Diagnosis

• Srs Air Bag Warning Lamp Does Not Turn on
• Srs Air Bag Warning Lamp Does Not Turn Off
• Seat Belt Warning System
• A/b Warning Lamp Is Off, Pass A/b Indctr Lamp Turns on Intermit
• Seat Belt Indctr Lamp Is On, Pass Air Bag Indctr Is on or Off

Srs Air Bag Warning Lamp Does Not Turn on Nissan Pathfinder R53

AIR BAG Warning Lamp Does Not Turn On

CHECK METER FUSE

Check the 10A fuse [No. 29, located in the fuse block (J/B)].

Is the fuse blown?

YES>>

GO TO 2.

NO>>

GO TO 3.

REPLACE METER FUSE AND CHECK AGAIN

Replace 10A fuse [No. 29, located in the fuse block (J/B)] and place ignition switch ON.

Does the fuse blow again?

YES>>

Replace fuse and harness.

NO>>

Inspection End.

CHECK HARNESS CONNECTIONS BETWEEN AIR BAG DIAGNOSIS SENSOR UNIT AND COMBINATION METER

Inspect the harness and connectors between the air bag diagnosis sensor unit and the combination meter.

Do the harness or connectors have any visible damage?

YES>>

Replace harness.

NO>>

GO TO 4.

CHECK COMBINATION METER

Disconnect the air bag diagnosis sensor unit harness connectors and place ignition switch ON.

Does AIR BAG warning lamp turn on?

YES>>

Replace the air bag diagnosis sensor unit. Refer to Removal and Installation.

NO>>

Replace the combination meter. Refer to Removal and Installation.

Srs Air Bag Warning Lamp Does Not Turn Off Nissan Pathfinder SUV

AIR BAG Warning Lamp Does Not Turn Off

CHECK CONDITION OF AIR BAG MODULE

Inspect for any deployed air bag modules or seat belt pre-tensioners.

Are any air bag modules or seat belt pre-tensioners deployed?

YES>>

Refer to For Frontal Collision or For Side and Rollover Collision.

NO>>

GO TO 2.

CHECK THE AIR BAG FUSE

Check 10A fuse [No. 29, located in the fuse block (J/B)].

Is the fuse blown?

YES>>

GO TO 3.

NO>>

GO TO 4.

CHECK AIR BAG FUSE AGAIN

Replace 10A fuse [No. 29, located in the fuse block (J/B)] and place ignition switch ON.

Does the fuse blow again?

YES>>

Replace fuse and harness.

NO>>

Inspection End.

CHECK AIR BAG DIAGNOSIS SENSOR UNIT

CONSULT

Is “AIR BAG” displayed on CONSULT?

YES>>

GO TO 5.

NO>>

Visually inspect the air bag diagnosis sensor unit harness connections. If the connections are OK, replace the air bag diagnosis sensor unit. Refer to Removal and Installation.

CHECK HARNESS CONNECTION

Check for loose connections between the combination meter and the air bag diagnosis sensor unit.

Are there any loose connections?

YES>>

Properly connect the combination meter and air bag diagnosis sensor unit harness connectors. If AIR BAG warning lamp still does not turn off, replace the wiring harness.

NO>>

Replace air bag diagnosis sensor unit. Refer to Removal and Installation.

Seat Belt Warning System Nissan Pathfinder SUV

Seat Belt Warning System Does Not Function

SEAT BELT WARNING LIGHT

Place ignition switch to ON.

Does the seat belt warning lamp come ON?

YES>>

GO TO 2.

NO>>

• Check 10A fuse [No. 15, located in the fuse block (J/B)].

• Check seat belt buckle switch LH.

• Check harness between combination meter and seat belt buckle switch LH.

• Check combination meter. Refer to Fail-Safe.

SEAT BELT BUCKLE LH

Fasten the seat belt buckle LH.

Does the seat belt warning lamp go OFF?

YES>>

GO TO 3.

NO>>

• Check seat belt buckle switch LH.

• Check harness between combination meter and seat belt buckle switch LH.

OCCUPANT CLASSIFICATION SYSTEM

Have a helper sit in the passenger seat.

Does the seat belt warning lamp go ON?

YES>>

GO TO 4.

NO>>

• Check occupant classification system. Refer to System Description.

• Check harness between occupant classification system control unit and air bag diagnosis sensor unit.

SEAT BELT BUCKLE RH

Fasten the seat belt buckle RH.

Does the seat belt warning lamp go OFF?

YES>>

System OK.

NO>>

• Check seat belt buckle switch RH.

• Check harness between seat belt buckle switch RH and air bag diagnosis sensor unit.

• Check harness between seat belt buckle switch RH and occupant classification system control unit.

• Replace air bag diagnosis sensor unit. Refer to Removal and Installation.

A/b Warning Lamp Is Off, Pass A/b Indctr Lamp Turns on Intermit Nissan Pathfinder

Diagnosis Procedure

SRS air bag warning lamp is OFF, passenger air bag indicator lamp turns ON intermittently with a person of adult stature seated normally in the passenger seat.

REPLACE OCS SENSORS

1. Replace the OCS sensors. Refer to Removal and Installation.

2. Perform zero point reset. Refer to Description.

Is symptom still present?

YES>>

GO TO 2.

NO>>

Inspection End.

REPLACE PASSENGER SEAT CUSHION FRAME

1. Replace the passenger seat cushion frame. Refer to Seat Cushion.

2. Perform zero point reset. Refer to Description.

>>

Inspection End.

Seat Belt Indctr Lamp Is On, Pass Air Bag Indctr Is on or Off Nissan Pathfinder 2025

Diagnosis Procedure

Vehicle conditions:

• Seat belt indicator lamp is ON, passenger air bag indicator lamp is ON or OFF

• Passenger seat is unoccupied

• Driver seat belt is buckled

• Passenger seat belt buckle harness and seat belt buckle switch are OK (buckle passenger seat belt to check if seat belt indicator lamp turns OFF, driver seat belt needs to be buckled)

REPLACE OCS SENSORS

1. Replace the OCS sensors. Refer to Removal and Installation.

2. Perform zero point reset. Refer to Description.

Is symptom still present?

YES>>

GO TO 2.

NO>>

Inspection End.

REPLACE PASSENGER SEAT CUSHION FRAME

1. Replace the passenger seat cushion frame. Refer to Seat Cushion.

2. Perform zero point reset. Refer to Description.

>>

Inspection End.