O/D Main Switch Circuit

A245E AUTOMATIC TRANSAXLE: AUTOMATIC TRANSAXLE SYSTEM: O/D Main Switch Circuit

O/D Main Switch Circuit

DESCRIPTION

The O/D main switch (transmission control switch) is a momentary type switch. When pressing the O/D main switch, the O/D OFF indicator light lights up and the ECM prohibits shifting into O/D, and when pressing it once again, the O/D OFF indicator light goes off and the ECM allows shifting into O/D. Turning the IG switch OFF will reset the O/D OFF indicator light.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH - BODY GROUND)





(a) Disconnect the transmission control switch connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
2. INSPECT TRANSMISSION CONTROL SWITCH





(a) Measure the resistance according to the value(s) in the table below.
Standard resistance:





NG -- REPLACE TRANSMISSION CONTROL SWITCH
OK -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH - ECM)





(a) Connect the transmission control switch connector.
(b) Disconnect the ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE