SECTION 5: TROUBLESHOOTING GUIDE 78
EPI800 Manual.doc EPI 800 MANUAL 2001 Vision Microsystems Inc.
OIL / AIR TEMPERATURE 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. The following measurements are made by first fabricating and
then inserting a ‘bare wire jumper’ between each respective
transducer lead to harness terminal (i.e. red to red, black to
black). If any test fails, stop and contact the factory.
3. 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.
4. Perform the following tests with instrument power ON.
NOTE: An Oil Temp indicator reading of ‘26 F’ or CAT/OAT
indicator reading of ‘–50 C’, means the probe is not delivering a
signal to the DPU. The most common cause is an open
connection, or a short in the cable causing the signal to be
grounded.
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