TM 5-3805-291-23-1
ELECTRICAL SYSTEM TESTS, INSPECTIONS, AND ADJUSTMENTS - CONTINUED
0013 00
CAT DATA LINK CIRCUIT TEST - CONTINUED
427-C0643
2.
Check for a short circuit.
a.
Disconnect ET from diagnostic connector (WP 0005 00).
b.
Disconnect any other control modules from CAT Data Link.
c.
Measure resistance between points listed in Table 1. Be sure to wiggle wires in harnesses as you make each resis-
tance measurement.
Table 1. Resistance Measurement for CAT Data Link.
P1-8 (Data Link +)
All other terminals on P1
connector
Ground stud
P1-9 (Data Link -)
All other terminals on P1
connector
Ground stud
Expected Results. Each resistance check indicates an open circuit.
d.
(1)
If results are OK, proceed to step 3.
(2)
If results are not OK, replace wiring harness in question (WP 0195 00 thru WP 0201 00). Ensure seals are
properly in place and connectors are securely connected. Verify repair eliminates problem.
0013 00-15
