DTC 63

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

Check the No.1 solenoid when DTC 62 is output and check the No.2 solenoid when DTC 63 is output.:

CIRCUIT DESCRIPTION
Shifting from 1st to O/D is done in combination with ON and OFF of the No.1 and No.2 solenoid valves controlled by the ECM. If an open or short circuit occurs in either of the solenoid valves, the ECM controls the remaining normal solenoid to allow the vehicle to be operated safety (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 SL solenoid valve OFF at this time. If both solenoids malfunction, hydraulic control cannot be done electrically and must be done manually.
Manual shifting as shown in the following table must be done. (In the case of a short circuit, the ECM stops sending current to the short circuited solenoid).

Shift Solenoids Operation:

WIRING DIAGRAM

No.1 And No.2 Solenoids Circuit:

INSPECTION PROCEDURE