Trouble Diagnoses with Battery/Starting/Charging System Tester: Notes

Before starting, perform the preliminary inspection.  Refer to "PRELIMINARY INSPECTION ".

1. Stop the operation of the power generation variable voltage control system using either of the following procedures.
   • Using the CONSULT-II, select "ENGINE" from "SELECT SYSTEM" and set the "ALT DUTY" to 0%. Keep "ALT DUTY" at 0% until the end of the inspection. When the "ALT DUTY" value is 0% or 100%, normal power generation is performed according to the characteristic of the IC regulator in the generator.
   • Turn the ignition switch off, and disconnect the battery current sensor connector. Disconnecting the battery current sensor may cause DTC (P1550 - P1554) to set. 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.
   Fig 1: Battery/Charging System Tester Display - CHARGING TEST INITIAL

   
6. Press "ENTER" until "LOADS OFF REV ENGINE 5 SEC" is displayed.
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, continue on with the testing process. The final results will not be affected.
     Fig 2: Battery/Charging System Tester Display - LOADS OFF

     
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 following electrical loads.
   • Heater fan set to highest speed. Do not run the A/C or windshield defroster.
   • Headlamp high beam
   • Rear window defogger
   NOTE: Do not run the windshield wipers or any other cyclical loads.
   Fig 3: Battery/Charging System Tester Display - DIODE/RIPPLE

   
10. Press "ENTER" to continue.
    Fig 4: Battery/Charging System Tester Display - TURN LOADS ON

    
11. 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.
    Fig 5: Battery/Charging System Tester Display - LOADS ON

    
12. Diagnostic result is displayed on the tester. Refer to "DIAGNOSTIC RESULT ITEM CHART ".
    Fig 6: Battery/Charging System Tester Display - CHARGING SYSTEM NORMAL

    
13. Press "ENTER" then test output code is displayed. Record the test output code on the repair order.
14. Toggle back to the "DIAGNOSTIC SCREEN" for test results.
    Fig 7: Battery/Charging System Tester Display - CHARGING CODE