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B2453




DTC Logic


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


1. SELF-DIAGNOSIS WITH PRE-CRASH SEAT BELT CONTROL UNIT

1.Turn ignition switch ON.
2.Check Self-diagnostic result with CONSULT.
Is DTC detected?
YES- Refer to "Diagnosis Procedure" .
NO- Inspection End.


Diagnosis Procedure

Regarding Wiring Diagram information, refer to "Wiring Diagram" [1][2]Electrical Diagrams.

1. CHECK PRE-CRASH SEAT BELT CONTROL UNIT INPUT SIGNAL

1.Turn ignition switch ON.
2.Select BRK PEDAL SNSR1 and BRK PEDAL SNSR2 in DATA MONITOR mode with CONSULT.
3.Check BRK PEDAL SNSR1 and BRK PEDAL SNSR2 indication under the following conditions.





Is the inspection result normal?
YES- GO TO 6.
NO- GO TO 2.

2. CHECK BRAKE PEDAL STROKE SENSOR POWER SUPPLY

1.Turn ignition switch OFF.
2.Disconnect brake pedal stroke sensor harness connector.
3.Check voltage between brake pedal stroke sensor harness connector and ground.





Is the inspection result normal?
YES- GO TO 4.
NO- GO TO 3.

3. CHECK BRAKE PEDAL STROKE SENSOR POWER SUPPLY CIRCUIT

1.Disconnect pre-crash seat belt control unit (driver side) harness connector.
2.Check continuity between pre-crash seat belt control unit (driver side) harness connector and brake pedal stroke sensor harness connector.
Revision: March 20122013 Infiniti JX





3.Check continuity between pre-crash seat belt control unit (driver side) harness connector and ground.





Is the inspection result normal?
YES- Replace pre-crash seat belt control unit (driver side). Refer to "Removal and Installation" Seat Belt Pre-Tensioner.
NO- Repair or replace harness or connector.

4. CHECK BRAKE PEDAL STROKE SENSOR CIRCUIT

1.Disconnect pre-crash seat belt control unit (driver side) harness connector.
2.Check continuity between pre-crash seat belt control unit (driver side) harness connector and brake pedal stroke sensor harness connector.





3.Check continuity between pre-crash seat belt control unit harness connector (driver side) and ground.





Is the inspection result normal?
YES- GO TO 5.
NO- Repair or replace harness or connector.

5. CHECK BRAKE PEDAL STROKE SENSOR

Refer to "Component Inspection" .
Is the inspection result normal?
YES- GO TO 6.
NO- Replace brake pedal stroke sensor. Refer to "Removal and Installation" Removal and Installation.

6. CHECK INTERMITTENT INCIDENT

Refer to "Intermittent Incident" Intermittent Incident.
- Inspection End.


Component Inspection


COMPONENT PARTS INSPECTION


1. CHECK BRAKE PEDAL STROKE SENSOR

1.Turn ignition switch OFF.
2.Disconnect brake pedal stroke sensor connector.
3.Check resistance between brake pedal stroke sensor terminal as per the following.
Revision: March 20122013 Infiniti JX





Is the inspection result normal?
YES- Inspection End.
NO- Replace brake pedal stroke sensor. Refer to "Removal and Installation" Removal and Installation.
Revision: March 20122013 Infiniti JX