Nissan Sentra Service Manual: Electrical load signal

Nissan Sentra Service Manual / Engine / Engine control system / Dtc/circuit diagnosis / Electrical load signal

Description

The electrical load signal (Headlamp switch signal, rear window defogger switch signal, etc.) is transferred via the CAN communication line.

Component Function Check

1.CHECK REAR WINDOW DEFOGGER SWITCH FUNCTION

With CONSULT

Turn ignition switch ON.
Select вЂњDATA MONITORвЂќ mode of вЂњENGINEвЂќ using CONSULT.
Select вЂњLOAD SIGNALвЂќ and check indication as per the following conditions.

Is the inspection result normal?

Is the inspection result normal? YES >> GO TO 2.

NO >> Proceed to EC-461, "Diagnosis Procedure".

2.CHECK LIGHTING SWITCH FUNCTION

Check вЂњLOAD SIGNALвЂќ indication as per the following conditions. With CONSULT

Check вЂњLOAD SIGNALвЂќ indication as per the following conditions.

Is the inspection result normal?

Is the inspection result normal? YES >> GO TO 3.

NO >> Proceed to EC-461, "Diagnosis Procedure".

3.CHECK HEATER FAN CONTROL SWITCH FUNCTION

Select вЂњHEATER FAN SWвЂќ and check indication as per the following conditions. With CONSULT

Select вЂњHEATER FAN SWвЂќ and check indication as per the following conditions.

Is the inspection result normal?

Is the inspection result normal? YES >> INSPECTION END

NO >> Proceed to EC-461, "Diagnosis Procedure".

Diagnosis Procedure

1.INSPECTION START

Confirm the malfunctioning circuit (rear window defogger, headlamp or heater fan). Refer to EC-461, "Component Function Check".

Which circuit is related to the incident? Rear window defogger>>GO TO 2.

Headlamp>>GO TO 3.

Heater fan>>GO TO 4.

2.CHECK REAR WINDOW DEFOGGER SYSTEM

Check the rear window defogger system. Refer to DEF-27, "Work Flow".

>> INSPECTION END

3.CHECK HEADLAMP SYSTEM

Check the headlamp system. Refer to EXL-85, "Work Flow".

>> INSPECTION END

4.CHECK HEATER FAN CONTROL SYSTEM

Check the heater fan control system. Refer to HA-15, "Workflow".

>> INSPECTION END

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