Advanced Diagnostics

Advanced Diagnostics - DTC P1683: Throttle Valve Default Position Spring Performance Problem






General Description
The electronic throttle control system controls the throttle valve opening. The system includes the throttle actuator, the throttle valve, throttle position (TP) sensors A and B, the electronic throttle control system (ETCS) control relay, the accelerator pedal position (APP) sensor, and the powertrain control module (PCM). The throttle valve default position spring is attached to the throttle valve gear. It opens the throttle valve to improve starting performance in cold conditions, or to retain minimum running performance in case of an electronic throttle control system failure. To confirm that the throttle valve is operating normally, and if the detecting condition meets, the throttle valve moves to a fully closed position and opens to the target position by the throttle valve default position spring. If the throttle valve does not move to the target position range, the PCM detects a throttle valve default position spring malfunction and stores a DTC.

Monitor Execution, Sequence, Duration, DTC Type, OBD Status






Enable Conditions






Malfunction Threshold
The throttle valve position is more than +5 ° from the fully closed position, or less than +3 ° from the fully closed position, for at least 2.5 seconds.

Driving Pattern
1. Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on.
2. Turn the ignition switch to LOCK (0) or press the engine start/stop button to select the OFF mode, and wait 10 seconds.
3. Turn the ignition switch to ON (II) or press the engine start/stop button to select the ON mode.

Diagnosis Details

Conditions for setting the DTC
When a malfunction is detected, the MIL comes on and a Pending DTC, a Confirmed DTC, and the freeze data are stored in the PCM memory.

Conditions for clearing the DTC
The MIL is cleared if the malfunction does not return in three consecutive trips in which the diagnostic runs. The MIL, the Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command or by disconnecting the battery.