Nissan Frontier D22. Manual - part 905

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CHARGING SYSTEM

VG33E AND VG33ER MODELS

WKWA1054E

CHARGING SYSTEM

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Trouble Diagnoses with Battery/Starting/Charging System Tester

EKS006UX

NOTE:
To ensure a complete and thorough diagnosis, the battery, starter and generator test segments must be done
as a set from start to finish.

1.

Turn off all loads on the vehicle electrical system.

2.

Perform battery and starting system test with Battery/Starting/
Charging system tester.

3.

Press “ENTER” to begin the charging system test.

4.

Start engine.

5.

Press “ENTER” until “LOADS OFF REV ENGINE 5 SEC” is dis-
played.

6.

Raise and hold the engine speed at 1,500 to 2,000 rpm for about
5 seconds, then return the engine to idle.
Once the increase in engine rpm is detected, press “ENTER” to
continue.

NOTE:

●

If after 30 seconds an increase in engine idle speed is not
detected, “RPM NOT DETECTED” will display.

●

Some engines may have a higher idle initially after starting,
particularly when the engine is cold. The tester may detect
this without any other action being taken. If this occurs, con-
tinue on with the testing process. The final results will not be affected.

7.

The tester now checks the engine at idle and performs the
DIODE/RIPPLE check.

8.

When complete, the tester will prompt you to turn on the follow-
ing electrical loads.

●

Heater fan set to highest speed. Do not run the A/C or wind-
shield defroster.

●

Headlamp high beam

●

Rear window defogger

NOTE:
Do not run the windshield wipers or any other cyclical loads.

9.

Press “ENTER” to continue.

SEL417X

SEL418X

SEL419X

SEL420X

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CHARGING SYSTEM

10. Raise and hold the engine speed at 1,500 to 2,000 rpm for about

5 seconds, then return the engine to idle. Once the increase in
engine rpm is detected, press “ENTER” to continue.

NOTE:
If after 30 seconds an increase in engine idle speed is not
detected,  “RPM NOT DETECTED” will be displayed. Press
“ENTER” to restart the test.

11. Diagnostic result is displayed on the tester. Refer to 

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"DIAGNOSTIC RESULT ITEM CHART"

 .

12. Press “ENTER” then test output code is displayed. Record the

test output code on the repair order.

13. Toggle back to the “DIAGNOSTIC SCREEN” for test results.

DIAGNOSTIC RESULT ITEM CHART

SEL421X

SEL422X

SEL577X

Diagnostic item

Service procedure

CHARGING SYSTEM NORMAL

Charging system is normal and will also show DIODE RIPPLE test result.

NO CHARGING VOLTAGE

Go to 

SC-31, "WORK FLOW"

 .

LOW CHARGING VOLTAGE

Go to 

SC-31, "WORK FLOW"

 .

HIGH CHARGING VOLTAGE

Go to 

SC-31, "WORK FLOW"

 .

DIODE RIPPLE NORMAL

Diode ripple is OK and will also show CHARGING VOLTAGE test result.

EXCESS RIPPLE DETECTED

Replace the generator. Perform “DIODE RIPPLE” test again using Battery/Starting/Charging 
system tester to confirm repair.

DIODE RIPPLE NOT DETECTED

Go to 

SC-31, "WORK FLOW"

 .

CHARGING SYSTEM

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WORK FLOW

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