SECTION 5: TROUBLESHOOTING GUIDE 79
EPI800 Manual.doc EPI 800 MANUAL 2001 Vision Microsystems Inc.
AMPS SYSTEM TROUBLE SHOOTING GUIDE
1. Check that wires are correctly installed according to the harness
wiring instructions and have not broken, shorted or come loose.
2. Measure continuity (ohms) of each wire from transducer
connector pin to appropriate harness connector pin. There should
be very low resistance if the wire is intact. If resistance is greater
that 0.7 ohms, then stop and correct connections.
3. The following measurements are made, with instrument power
ON, by connecting to the metal terminal lugs of the transducer
without disturbing the push-on terminals of the harness. With
power applied to instrument system, perform the following DC
voltage tests. If any test fails, stop and contact the factory:
Record the above BLK to WHT value, then start the engine and
run at approximately 1300 RPM with a functioning alternator.
Subtract the difference between the recorded reading and the
next reading to determine functionality of the AMPS transducer.
Each amp of alternator output will result in an increase of 0.036
vdc on the BLK to WHT measurement.
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