Generators & Regulators: Diagnosis Nissan Frontier D22

TROUBLE DIAGNOSES WITH BATTERY/STARTING/CHARGING SYSTEM TESTER

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. For tester identification (Scheme 1)
3. Press "ENTER" to begin the charging system test.
4. Start engine.
5. Press "ENTER" until "LOADS OFF REV ENGINE 5 SEC" is displayed.
6. Raise and hold the engine speed at 1500 to 2000 RPM for about 5 seconds, then return the engine to idle. Once the increase in engine RPM is detected, press "ENTER" to continue.
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 following electrical loads. Heater fan set to highest speed (DO NOT run the A/C or windshield defroster), headlight high beam and rear window defogger.
9. Press "ENTER" to continue.
10. Raise and hold the engine speed at 1500 to 2000 RPM for about 5 seconds, then return the engine to idle. Once the increase in engine RPM is detected, press "ENTER" to continue.
11. Diagnostic result is displayed on the tester. See «DIAGNOSTIC RESULT ITEM»(ref-165340-S04671702342004082500000).
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.

Scheme 1

DIAGNOSTIC RESULT ITEM

Note. For work flow, see WORK FLOW , and for trouble diagnoses with Battery/Starting/Charging system tester, see TROUBLE DIAGNOSES WITH BATTERY/STARTING/CHARGING SYSTEM TESTER .

Scheme 2

DIAGNOSTIC PROCEDURE 1, CHECK "L" TERMINAL CIRCUIT

Note. For trouble diagnoses with Battery/Starting/Charging system tester, see TROUBLE DIAGNOSES WITH BATTERY/STARTING/CHARGING SYSTEM TESTER .

Note. For connector symbol explanation, see HOW TO READ CONNECTOR SYMBOLS .

For diagnostic procedure 1, check "L" terminal circuit (Scheme 3)

Scheme 3

DIAGNOSTIC PROCEDURE 2, CHECK "B" TERMINAL CIRCUIT

Note. For trouble diagnoses with Battery/Starting/Charging system tester, see TROUBLE DIAGNOSES WITH BATTERY/STARTING/CHARGING SYSTEM TESTER .

Note. For connector symbol explanation, see HOW TO READ CONNECTOR SYMBOLS .

For diagnostic procedure 2, check "B" terminal circuit (Scheme 4)

Scheme 4

DIAGNOSTIC PROCEDURE 3, CHECK "S" TERMINAL CIRCUIT

Note. For trouble diagnoses with Battery/Starting/Charging system tester, see TROUBLE DIAGNOSES WITH BATTERY/STARTING/CHARGING SYSTEM TESTER .

Note. For connector symbol explanation, see HOW TO READ CONNECTOR SYMBOLS .

For diagnostic procedure 3, check "S" terminal circuit (Scheme 5)

Scheme 5

Scheme 6