Cen C850, Руководство по устранению неисправностей

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Page 6
TG97A
Section C: Advanced Troubleshooting
(CONT'D)
Chart 2: Test OVCO Circuit
Yes No
1. Unplug alternator-to-regulator harness from regulator.
2. Connect DMM red lead to harness plug socket B.
3. Connect DMM black lead to harness socket 2. Does resistance read 1.0-1.5 ohms?
Alternator is faulty
Replace existing regulator with known good regulator. Run engine. Does OVCO trip?
Yes No
Alternator is faulty
Yes No
1. Connect DMM red lead to harness plug socket 2.
2. Connect black DMM lead to alternator B– terminal. Does resistance read <1 ohm?
Alternator is faulty
Original regulator is faulty
Yes
No
1. Unplug alternator-to-regulator harness from regulator.
2. Connect DMM red lead to harness plug socket C.
3. Connect DMM black lead to harness socket 2. Does resistance read 1.0-1.5 ohms?
Alternator is faulty
If you have questions about your alternator or any of these test procedures, or if you need to locate a Factory Authorized Service Distributor, 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
C. E. Niehoff & Co. • 2021 Lee Street • Evanston, IL 60202 Tech Services Hotline 800-643-4633