Ignition Switch-ST and Transaxle Range (TR) Switch (A/T)

IGNITION SWITCH-ST AND TRANSAXLE RANGE (TR) SWITCH (A/T)
When the ignition switch is set to the ST position, battery voltage is applied through the ignition switch and TR switch to the ECM. If the selector lever is not in P or the N position, battery voltage will not reach the ECM. Based on this signal, the ECM determines the automatic transaxle load and drives the idle speed control actuator to maintain optimum idle speed.

Circuit Diagram - Ignition Switch, ST & Transaxle Range Switch (A/T):

TROUBLESHOOTING HINTS
If the park/neutral position switch harness check is normal but the switch output is abnormal, check the control cable adjustment.

Using Hi-Scan:

Harness Inspection: