Allison B 500 - Short between Wires and to Ground

Copyright © 1998 General Motors Corp. 4–5
WIRE CHECK PROCEDURES
WTEC II ELECTRONIC CONTROLS TROUBLESHOOTING MANUAL
Figure 4–5. Short Between Wires And To Ground
NOTE: When conducting circuit checks that include the external harness, add one (1) Ohm to the values
shown. Speed sensor resistance is 270–330 Ohms. C3 pressure switch resistance is two (2) Ohms
maximum when switch is closed and 20,000 Ohms minimum when switch is open.
+
–
0
+
–
0
WIRING HARNESS
Two wires have frayed and are shorted
together. Continuity beeper of VOM will
sound, or reading will go to zero Ohms
when these two wires are probed with
the VOM.
Harness has been chafed and one or more
wires are shorted to ground. VOM continuity
beeper will sound or meter reading will go
to zero Ohms when meter is probing between
this wire and chassis ground.
BARE WIRES
TOUCHING
EACH OTHER
SOLENOIDS
0 OHMS0 OHMS
SHORTED
TO METAL
V00635.01
CONNECTOR
VOLT-
OHMMETER