SC-28
CHARGING SYSTEM
Revision: 2006 January2006 M35/M45
Trouble Diagnoses with Battery/Starting/Charging System Tester (Charging)NKS003NP
NOTE:
To ensure a complete and thorough diagnosis, the battery, starter and alternator test segments must be done
as a set from start to finish.
Before starting, perform the preliminary inspection. Refer to SC-32, "
PRELIMINARY INSPECTION" .
1. Stop the operation of the power generation voltage variable control in either of the following procedures.
After selecting “ENGINE” of “SELECT SYSTEM” using CONSULT-II, set the DUTY value of “ALTERNA-
TOR DUTY” to 0% by selecting “ALTERNATOR DUTY” of “ACTIVE TEST”. Continue “ACTIVE TEST”
until the end of inspection. (When the DUTY value is 0 or 100%, the normal power generation is per-
formed according to the characteristic of the IC regulator of the alternator.)
Turn the ignition switch OFF, and disconnect the battery current sensor connector. [However, DTC
(P1550 - P1554) of the engine might remain. After finishing the inspection, connect the battery current
sensor connector and erase the self-diagnostic results history of the engine using CONSULT-II.]
2. Turn off all loads on the vehicle electrical system.
3. Perform battery and starting system test with Battery/Starting/
Charging system tester.
4. Press “ENTER” to begin the charging system test.
5. Start engine.
6. Press “ENTER” until “LOADS OFF REV ENGINE 5 SEC” is dis-
played.
7. 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.
8. The tester now checks the engine at idle and performs the
DIODE/RIPPLE check.
9. 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.
SEL417X
SEL418X
SEL419X
