DTC 62

DTC 62, 63 - No.1, No.2 SOLENOID VALVE CIRCUIT




Check the No. 1 solenoid when diagnostic trouble code 62 is output.
Check the No. 2 solenoid when diagnostic trouble code 63 is output.

CIRCUIT DESCRIPTION
Shifting from 1st to O/D is done in combination with the switching ON and OFF of the No.1 and No.2 solenoid valves controlled by ECM. If an open or short circuit occurs in either of the solenoid valves, the ECM controls the remaining normal solenoid valve to allow the vehicle to be operated safely (Fail safe function).

Fail Safe Function
If either of the solenoid valve circuits develops a short or an open, the ECM turns the other solenoid ON and OFF to shift to the gear positions shown in the table below. The ECM also turns the lock-up solenoid valve OFF at the same time. If both solenoids malfunction, hydraulic control cannot be done electronically and must be done manually.
Manual shifting, as shown in the following table must be done. (In the case of a short in circuit, the ECM stops sending current to the short circuited solenoid).





WIRING DIAGRAM





INSPECTION PROCEDURE