Service Manual DF200AP Power Head[Engine Control[Diagnostic Information And Procedures][Self-Diagnostic Code “1 – 1” Rectifier _ Regulator (Over Charging)]]

• This self-diagnostic code indication may be canceled when turning the main switch “ON” (engine not running), because ECM detects battery voltage.
• It is difficult to thoroughly check the rectifier/regulator. Before replacing it with new one, check that the ground point has good electrical contact.

Troubleshooting

Step 1

1. Check the rectifier/regulator.
   Refer to “Rectifier/ Regulator Inspection” in Section 1K (Page 1K—9).

Is the result OK?

Yes Go to step 2.
No Faulty rectifier/regulator.

Step 2

1. With the engine running, check charging voltage at idle speed.

Is the result 16 V or higher?

Yes Faulty rectifier/regulator.
No Faulty ECM or wire continuity/connection failure.