WTEC III ELECTRONIC CONTROLS TROUBLESHOOTING MANUAL WIRE CHECK PROCEDURES Shorted to metal FEEDTHROUGH HARNESS CONNECTOR SOLENOIDS Bare wires touching each other 0 0 + VOLT/OHM- METER (VOM) + 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. 0 OHMS 0 OHMS 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. V03377 Figure 4–4. 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. Copyright © 2001 General Motors Corp.