P0758
CIRCUIT DESCRIPTIONShifting from 1St to O/D is performed in combination with ON and OFF conditions of the shift solenoid valves No.1 and No.2 controlled by ECM. If an open or short circuit occurs on either of the shift solenoid valves, the ECM controls the remaining normal shift solenoid valve to allow the vehicle to be operated smoothly (Fail safe function).
Fail Safe Function:
If either of the shift solenoid valve circuits develops an open or short, the ECM turns the other shift solenoid ON and OFF to shift it to the gear positions shown in the table. The ECM also turns the shift solenoid valve SL OFF at the same time. If both solenoids are malfunction, hydraulic control cannot be performed electronically 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).
DTC Detection Condition:
Check the shift solenoid valve No.1 when DTC P0753 is output and check the shift solenoid valve No.2 when DTC P0758 is output.
Wiring Diagram:
Step 1:
Step 2:
Step 3:
INSPECTION PROCEDURE