O/D Main Switch & O/D Off Indicator Light Circuit

CIRCUIT DESCRIPTION
The O/D main switch contacts go off when the switch is pushed in and come on when it is pushed out. In O/D main switch OFF position, the O/D OFF indicator lights up, and the ECM prohibits shifting to overdrive. The ECM also causes the O/D OFF indicator light to blink when a malfunction is detected. In this case, connecting the terminals in the DLC No.1 can display the DTC.

Indicator Does Not Light Up Diagnostic Chart:

INDICATOR DOES NOT ILLUMINATE DIAGNOSTIC CHART

Indicator Remains ON Diagnostic Chart:

INDICATOR REMAINS ILLUMINATED DIAGNOSTIC CHART

O/D Main Switch And "OFF" Indicator Circuit:

WIRING DIAGRAM

O/D Main Switch Inspection Procedure (1 Of 2):

O/D Main Switch Inspection Procedure (2 Of 2):

INSPECTION PROCEDURE