Ce-niehoff-co N1601/N1602/N1603/N1604 Troubleshooting Guides Instrukcja Użytkownika Pobierz pdf (Strona 10)

Page 10

TG29D

If you have questions about your alternator or any of these test procedures, or if you need to locate a Factory Authorized Service Dealer, please contact us at:

C. E. Niehoff & Co.• 2021 Lee Street • Evanston, IL 60202 USA

TEL: 800.643.4633 USA and Canada • TEL: 847.866.6030 outside USA and Canada • FAX: 847.492.1242

E-mail us at service@CENiehoff.com

Section C: Advanced Troubleshooting (CONT’D)

Yes No

Alternator is defective.

With engine off, unplug alternator-to-regulator harness. Connect DMM red lead to socket A on harness plug.

Connect black lead to alternator anti-drive end B+ terminal. Does resistance measure about 1.0 ± 0.2 ohms?

Chart 5 – N1604-all models – No Alternator Output – Test OVCO Circuit

Yes

Connect DMM red lead to socket A on alternator-to-

regulator harness plug. Connect black lead to alternator

anti-drive end B– terminal. Does continuity exist?

Alternator is defective.



Figure 10 – Alternator-to-Regulator Harness Plug

SOCKET CONNECTIONS

Pin A F–

Pin B AC Terminal

Pin C B–

Pin D B+

Yes

Connect DMM red lead to socket A on alternator-to-regulator

harness plug. Connect black lead to alternator case.

Does continuity exist?

Regulator is defective.

Alternator is defective.



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