Nissan Pathfinder: Roof - Dtc/circuit Diagnosis

• B2f98-04 Sunshade Motor
• B2f99-04 Sunroof Motor
• Communication Signal Circuit

B2f98-04 Sunshade Motor Nissan Pathfinder Fifth generation

DTC Description

DTC DETECTION LOGIC

DTC No.	CONSULT screen terms (Trouble diagnosis content)	DTC detection condition
B2F98-04	Sunshade motor (Sunshade motor)	Diagnosis condition	When ignition switch ON or timer operates.
		Signal (terminal)	—
		Threshold	CPU in sunshade motor assembly detects internal malfunction
		Diagnosis delay time	1 second or less

POSSIBLE CAUSE

Sunshade motor assembly

FAIL SAFE

Sunshade auto operation is forbidden

Confirmation Procedure

PERFORM DTC CONFIRMATION PROCEDURE

CONSULT

1. Ignition switch ON.

2. Operate sunshade switch to any position.

3. Select “Self Diagnostic Result” mode of “BCM”.

4. Check DTC.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO>>

Confirmation after repair: Inspection End.

DTC Diagnosis Procedure

REPLACE SUNSHADE MOTOR ASSEMBLY

Replace sunshade motor assembly. Refer to Removal and Installation.

YES>>

Inspection End.

B2f99-04 Sunroof Motor Nissan Pathfinder SUV

DTC Description

DTC DETECTION LOGIC

DTC No.	CONSULT screen terms (Trouble diagnosis content)	DTC detection condition
B2F99-04	Sunroof motor (Sunroof motor)	Diagnosis condition	When ignition switch ON or timer operates.
		Signal (terminal)	—
		Threshold	CPU in moonroof motor assembly detects internal malfunction
		Diagnosis delay time	1 second or less

POSSIBLE CAUSE

Moonroof motor assembly

FAIL SAFE

Moonroof auto operation is forbidden

Confirmation Procedure

PERFORM DTC CONFIRMATION PROCEDURE

CONSULT

1. Ignition switch ON.

2. Operate moonroof switch to any position.

3. Select “Self Diagnostic Result” mode of “BCM”.

4. Check DTC.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO>>

Confirmation after repair: Inspection End.

DTC Diagnosis Procedure

REPLACE MOONROOF MOTOR ASSEMBLY

Replace moonroof motor assembly. Refer to Removal and Installation.

YES>>

Inspection End.

Communication Signal Circuit Nissan Pathfinder 2025

Component Function Check

CHECK SUNSHADE FUNTION

Check sunshade open/close operations with sunshade switch.

Is the inspection result normal?

YES>>

Inspection End.

NO>>

Refer to Diagnosis Procedure.

Diagnosis Procedure

CHECK COMMUNICATION SIGNAL

1. Ignition switch OFF.

2. Disconnect sunshade motor assembly connector.

3. Ignition switch ON.

4. Check signal between sunshade motor assembly harness connector and ground with oscilloscope.

   (+)		(–)	Signal (Reference value)
   Sunshade motor assembly
   Connector	Terminal
   R110	7	Ground

Is the inspection result normal?

YES>>

Replace sunshade motor assembly. Refer to Removal and Installation.

NO>>

GO TO 2.

CHECK COMMUNICATION SIGNAL CIRCUIT

1. Ignition switch OFF.

2. Disconnect moonroof motor assembly connector.

3. Check continuity between moonroof motor assembly harness connector and sunshade motor assembly harness connector.

   Moonroof motor assembly		Sunshade motor assembly		Continuity
   Connector	Terminal	Connector	Terminal
   R111	7	R110	7	Yes

4. Check continuity between sunshade motor assembly harness connector and ground.

   Sunshade motor assembly		—	Continuity
   Connector	Terminal
   R110	7	Ground	No

Is the inspection result normal?

YES>>

Replace moonroof motor assembly. Refer to Removal and Installation.

NO>>

Repair or replace harness.