Nissan Versa

 Sedan Service Manual

Electrical & power control » Charging system (CHG)
S Terminal circuit

Description

The output voltage of the generator is controlled by the IC regulator at terminal "S" detecting the input voltage from battery.

The "S" terminal circuit detects the battery voltage to adjust the generator output voltage with the IC voltage regulator.

Diagnosis Procedure

Regarding Wiring Diagram information. Refer to CHG "Wiring Diagram".

1.CHECK "S" TERMINAL CONNECTION

1. Turn ignition switch OFF.

2. Check if "S" terminal is clean and tight.

Is the inspection result normal?

YES >> GO TO 2.

NO >> Repair "S" terminal connection. Confirm repair by performing complete Charging system test using EXP-800 NI or GR8-1200 NI (if available). Refer to the applicable Instruction Manual for proper testing procedures.

2.CHECK "S" TERMINAL CIRCUIT

Check voltage between generator harness connector and ground.

Is the inspection result normal?

YES >> Refer to CHG "Work Flow (With EXP-800 NI or GR8-1200 NI)" or CHG "Work Flow (Without EXP-800 NI or GR8-1200 NI)".

NO >> Check harness for open between generator and fuse.

SYMPTOM DIAGNOSIS

CHARGING SYSTEM

Symptom Table

Symptom	Reference
Battery discharged	Refer to CHG "Work Flow (With EXP-800 NI or GR8-1200 NI)" or CHG "Work Flow (Without EXP-800 NI or GR8-1200 NI)".
The charge warning lamp does not illuminate when the ignition switch is set to ON.
The charge warning lamp does not turn OFF after the engine starts.
The charging warning lamp turns ON when increasing the engine speed.

REMOVAL AND INSTALLATION

Precautions

System

Diagnosis and repair workflow

Charging system preliminary inspection

Power generation voltage variable control system operation inspection

B Terminal circuit

L Terminal circuit (open)

L Terminal circuit (short)

S Terminal circuit

Generator