P0758

DTC P0758 SHIFT SOLENOID B ELECTRICAL MALFUNCTION

CIRCUIT DESCRIPTION

DTC Detecting Condition:

Shifting from 1st to O/D is performed in combination with ON and OFF of the S1 and S2 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 smoothly (Fail safe function).


HINT: Check the S1 solenoid valve when DTC P0753 is output and check the S2 solenoid valve when DTC P0758 is output.

Fail safe function:
If either of the solenoid valve circuits develops an open or short, the ECM turns the other solenoid valve ON and OFF to shift to the gear positions shown in the table above. The ECM also turns the ST solenoid valve OFF at the same time. If both solenoids malfunction, hydraulic control cannot be performed electronically and must be done manually.

Manual shifting as shown in the above table must be done (In the case of a short circuit, the ECM stops sending current to the short circuited solenoid).

Wiring Diagram:

Step 1:

Step 2 - 3:

Step 4:

INSPECTION PROCEDURE