Nissan Sentra B18 (2020-2025) Service Manual: Diagnosis Procedure

Nissan Sentra B18 (2020-2025) Service Manual / Body Exterior, Doors, Roof & Vehicle Security / Door & Lock :: Dtc/circuit Diagnosis / Trunk Lid Opener Actuator / Diagnosis Procedure

Diagnosis Procedure

CHECK TRUNK LID OPENER INPUT SIGNAL

Ignition switch OFF.
Disconnect trunk lid opener assembly (ajar switch) connector.
Check voltage between trunk lid opener assembly (ajar switch) harness connector and ground.

(+)	(–)	Condition	Voltage (Approx.)
B59	3	Ground	Trunk lid opener switch is pressed	Battery voltage

(+)

(–)

Condition

Voltage

(Approx.)

Trunk lid opener assembly (ajar switch)

Connector

Terminal

B59

Ground

Trunk lid opener switch is pressed

Battery voltage

Is the inspection result normal?

YES >>

GO TO 3.

NO >>

GO TO 2.

CHECK TRUNK LID OPENER ACTUATOR CIRCUIT

Disconnect BCM connector.

Check continuity between BCM harness connector and trunk lid opener assembly (ajar switch) harness connector.

BCM		Trunk lid opener assembly (ajar switch)		Continuity
Connector	Terminal	Connector	Terminal	Continuity
M21	145	B59	3	Yes

Check continuity between BCM harness connector and ground.

BCM		—	Continuity
Connector	Terminal	—	Continuity
M21	145	Ground	No

Is the inspection result normal?

YES>>

Replace BCM. Refer to Removal and Installation.

NO>>

Repair or replace harness.

CHECK TRUNK LID OPENER ACTUATOR GROUND CIRCUIT

Check continuity between trunk lid opener assembly (ajar switch) harness connector and ground.

Trunk lid opener assembly (ajar switch)		—	Continuity
Connector	Terminal	—	Continuity
B59	2	Ground	Yes

Is the inspection normal?

YES>>

Replace trunk lid opener assembly (ajar switch). Refer to Removal and Installation.

NO>>

Repair or replace harness.

Component Function Check

Component Function Check CHECK FUNCTION CONSULT Select "Trunk/back door" in "Active Test" mode of "BCM(TRU ...

Door & Lock :: Symptom Diagnosis

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