Nissan March K13. Manual - part 52

CHG-22

< DTC/CIRCUIT DIAGNOSIS >

L TERMINAL CIRCUIT (SHORT)

L TERMINAL CIRCUIT (SHORT)

Description

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The “L” terminal circuit controls the charge warning lamp. The charge warning lamp illuminates when the igni-
tion switch is set to ON or START. When the alternator is providing sufficient voltage with the engine running,
the charge warning lamp will go off. If the charge warning lamp illuminates with the engine running, a malfunc-
tion is indicated.

Diagnosis Procedure

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1.

CHECK “L” TERMINAL CIRCUIT (SHORT)

1.

Turn ignition switch OFF.

2.

Disconnect alternator connector.

3.

Turn ignition switch ON.

Does charge warning lamp illuminate?

YES

>> GO TO 2.

NO

>> Refer to 

CHG-11, "Work Flow"

.

2.

CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

1.

Turn the ignition switch OFF.

2.

Disconnect the battery cable from the negative terminal.

3.

Disconnect combination meter connector.

4.

Check continuity between combination meter harness connector and ground.

Is the inspection result normal?

YES

>> Replace combination meter.

NO

>> Repair the harness.

Combination meter harness connector

Ground

Continuity

Connector No.

Terminal No.

M34

35

Not existed

CHG

S TERMINAL CIRCUIT

CHG-23

< DTC/CIRCUIT DIAGNOSIS >

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S TERMINAL CIRCUIT

Description

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The output voltage of the alternator is controlled by the IC voltage regulator at the “S” terminal detecting the
input voltage.
The “S” terminal circuit detects the battery voltage to adjust the alternator output voltage with the IC voltage
regulator.

Diagnosis Procedure

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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.

2.

CHECK “S” TERMINAL CIRCUIT

Check voltage between alternator harness connector and ground.

Is the inspection result normal?

YES

>> Refer to 

CHG-11, "Work Flow"

.

NO

>> Check harness for open between alternator and fuse.

Terminals

Voltage (Approx.)

(+)

(–)

Alternator harness connector

Terminal

F15

4

Ground

Battery voltage

CHG-24

< SYMPTOM DIAGNOSIS >

CHARGING SYSTEM

SYMPTOM DIAGNOSIS

CHARGING SYSTEM

Symptom Table

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Symptom

Reference

Discharged battery

Refer to 

CHG-11, "Work Flow"

.

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.

CHG

ALTERNATOR

CHG-25

< REMOVAL AND INSTALLATION >

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REMOVAL AND INSTALLATION

ALTERNATOR

Exploded View

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REMOVAL

DISASSEMBLY

1.

Alternator bracket

2.

Alternator bracket mounting bolt

3.

Alternator mounting bolt upper

4.

Alternator mounting bolt lower

5.

Alternator

6.

Terminal B harness

7.

Terminal B nut

8.

Alternator connector

Refer to 

GI-4, "Components"

 for symbols in the figure.

JMMIA0372GB