Kick Down Switch Circuit

AA80E AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISSION SYSTEM: Kick Down Switch Circuit
- Kick Down Switch Circuit

DESCRIPTION

The kick-down switch is turned ON when the accelerator pedal is fully depressed and a signal is sent to the ECM.

When the kick-down switch is turned ON, the ECM controls gear shifting according to the programmed shift diagrams.

If a short circuit develops in the kick-down switch, the ECM disregards the kick-down signals and controls shifting at the normal shift points.

WIRING DIAGRAM







PROCEDURE

1. CHECK HARNESS AND CONNECTOR (KICK DOWN SWITCH - BODY GROUND)

(a) Disconnect the kick-down 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 KICK DOWN SWITCH ASSEMBLY

(a) Measure resistance according to the value(s) in the table below when kick-down switch is ON and OFF.





Standard resistance:





NG -- REPLACE KICK DOWN SWITCH ASSEMBLY
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (KICK DOWN SWITCH - ECM)

(a) Connect the kick-down switch connector.





(b) Disconnect the ECM connector.

(c) Measure resistance according to the value(s) in the table below when accelerator pedal is fully depressed or not.

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE AA80E Automatic Transmission System