Engine Control System

DTC PO75O, P0755 Shift Solenoid A/B Malfunction

SYSTEM DESCRIPTION
The ECM uses signals from the NC2 revolution sensor and vehicle speed sensor to detect the actual gear position(1st, 2nd, 3rd or O/D gear). Then the ECM compares the actual gear with the shift schedule in the ECM memory to detect mechanical trouble of the shift solenoid valves and valve body.




DETECTING CONDITION
Check the shift solenoid valve No.1 when diagnostic trouble code PO75O is output and check shift solenoid valve No.2 when diagnostic trouble code PO755 is output.







INSPECTION PROCEDURE