Diagnose the Control System

DIAGNOSE THE CONTROL SYSTEM




To diagnose the control system, unplug the controller connector and test with an ohmmeter. Figure 1 shows the terminal numbers and wire colors of the controller connector as viewed from the wire harness side.

Figure 2 shows the wiring diagram for the electronic control system. For each check, bring the ohmmeter probes in contact with the terminals on the wire harness side of the controller connector.




The first check procedure is for the shift lever switch. Connect one probe of your ohmmeter to terminal 12 while is simply a ground. Leave this probe on terminal 12 for all the following tests. You will move the other probe to various terminals to perform the tests.