P0787

DTC P0787 Shift/Timing Solenoid Low (Shift Solenoid Valve ST)
DTC P0788 Shift/Timing Solenoid High (Shift Solenoid Valve ST)

DESCRIPTION
Shift solenoid valve ST is switched ON/OFF by a signal from the ECM so that letting in or out timing of 2nd brake is adjusted by operating the orifice control valve. Therefore, shift solenoid valve ST operates when letting in or out the reverse clutch.

If the shift solenoid ST is broken, the shift shock increases.

P0787-P0788:

MONITOR DESCRIPTION
This DTC indicates an open or short in the shift solenoid valve ST circuit. The ECM commands gear shifts by turning the shift solenoid valves ON/OFF. When there is an open or short circuit in any shift solenoid valve circuit, the ECM detects the problem, illuminates the MIL and stores the DTC. Also, the ECM performs the fail-safe function and turns the other normal shift solenoid valves ON/OFF. In case of an open or short circuit, the ECM stops sending current to the circuit.

MONITOR STRATEGY