Troubleshooting

DTC P0983 SHIFT SOLENOID D CONTROL CIRCUIT HIGH (SHIFT SOLENOID VALVE S4)

CIRCUIT DESCRIPTION

DTC Detecting Condition:

Shifting from 1st to O/D is performed in combination with ON and OFF of the shift solenoid valves SL1 and SL2 controlled by ECM. If an open or short circuit occurs in 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).

HINT: Check the shift solenoid valve SL1 when DTC P0748 is output, check the shift solenoid valve SL2 when DTC P0778 is output and check the shift solenoid valve S4 when DTCs P0982 and P0983 are output.

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 to the gear positions shown in the table. The ECM also turns the shift solenoid valve DSL 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 table must be done (In the case of a short circuit, the ECM stops sending current to the short circuited solenoid).

MONITOR DESCRIPTION

Monitor Strategy:

Typical Enabling Conditions:

Typical Malfunction Thresholds:

The ECM commands gearshift 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 and illuminates the MIL and stores the DTC. And the ECM performs the fail-safe function and turns the other shift solenoid valves in good condition "ON/OFF" (In case of an open or short circuit, the ECM stops sending current to the circuit.).

Wiring Diagram:

Step 1:

Step 2:

Step 3:

INSPECTION PROCEDURE