Controller Battery Charger Test

  1. Ensure unit is off.

  2. Verify the J6 connection is connected to controller.

  3. Measure the voltage across the battery and record (12.5 Vdc).

  4. Remove and check the 30 amp battery charger fuse S12 from the controller.

  5. With fuse S12 removed from the controller, start the unit and measure voltage at terminals J15 and J16 located under blue cap (see images below). If the voltage is 16.1 to 16.8 Vdc, the controller is good. If voltage is the same has battery voltage, replace controller.

  6. Reinstall fuse S12 and take the same readings at J15 and J16. If voltage reading is 16.1 to 16.8 Vdc, check the CH (10 ga) wire from J11 to the engine frame.

  7. If battery voltage in steps 5 and 6 are higher that voltage recorded in step 3, the charging circuit is working properly.

    1. Blue Cap

Parent topic: Electrical Maintenance