Nissan Sentra B18 (2020-2025) Service Manual: Illumination Control Switch Signal Circuit

Nissan Sentra B18 (2020-2025) Service Manual / Driver Information & Multimedia / Meter, Warning Lamp & Indicator :: Type B / Dtc/circuit Diagnosis / Illumination Control Switch Signal Circuit

Diagnosis Procedure

Diagnosis Procedure

CHECK COMBINATION METER INPUT SIGNAL

Ignition switch ON.

Check voltage between the following terminals of the illumination control switch.

Illumination control switch			Condition	Voltage (Approx.)
Connector	Terminals
Connector	(+)	(−)
M66	6	4	When illumination control switch (+) is pressed	0 V
	6		Other than the above	5 V
	7		When illumination control switch (−) is pressed	0 V
	7		Other than the above	5 V

Is the inspection result normal?

YES>>

Inspection End.

NO>>

GO TO 2.

CHECK ILLUMINATION CONTROL SWITCH SIGNAL CIRCUIT

Ignition switch OFF.
Disconnect combination meter harness connector and illumination control switch harness connector.

Check continuity between combination meter harness connector and illumination control switch harness connector.

Combination meter		Illumination control switch		Continuity
Connector	Terminal	Connector	Terminal	Continuity
M24	32	M66	4	Yes
	31		7
	25		6

Check continuity between combination meter harness connector and ground.

Combination meter		—	Continuity
Connector	Terminal	—	Continuity
M24	32	Ground	No
	31
	25

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair or replace harness or connector.

CHECK ILLUMINATION CONTROL SWITCH
1. Check illumination control switch. Refer to Component Inspection.
Is the inspection result normal?
YES>>
Replace combination meter. Refer to Removal and Installation.
NO>>
Replace illumination control switch. Refer to Removal and Installation.

Component Inspection

Component Inspection

CHECK ILLUMINATION CONTROL SWITCH

Ignition switch OFF.
Disconnect illumination control switch harness connector.

Check continuity between the following terminals of the illumination control switch:

Illumination control switch		Condition	Continuity
Terminals		Condition	Continuity
6	4	When illumination control switch (+) is pressed	Yes
6		Other than the above	No
7		When illumination control switch (−) is pressed	Yes
7		Other than the above	No

Is the inspection result normal?

YES >>

Inspection End.

NO >>

Replace illumination control switch. Refer to Removal and Installation.

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