Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2002 Nissan-Datsun Sentra SE-R, AutomaticFACTORY OEM SERVICE PROCEDURE

Diagnostic Procedure

WARNING: This page is about a different car, the 2005 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.

CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-I

Turn ignition switch ON.
Connect CONSULT-II and select "DATA MONITOR" mode.

Select "LOAD SIGNAL" and check indication under the following conditions.

CONDITION INDICATION

Condition	Indication
Lighting switch: ON at 2nd position	ON
Lighting switch: OFF	OFF

OK or NG

OK: INSPECTION END
NG: GO TO 2.

Fig 1: Displaying "DATA MONITOR" Mode
Courtesy of NISSAN MOTOR CO., U.S.A.

CHECK HEADLAMP SYSTEM
Refer to "HEADLAMP (FOR USA) ", or "HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM ".
1. : INSPECTION END

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.