[Previous][Next]
DTC Description
 
 
DTC DETECTION LOGIC
DTCM.U.T.-III SE screen terms
(Trouble diagnosis content)
DTC detection condition
P212300APP SEN 1/CIRC
(Throttle/Pedal position sensor/switch D circuit high)
Diagnosis conditionEngine running at idle
Signal (terminal)Accelerator pedal position sensor 1 signal
ThresholdAn excessively high voltage is sent to ECM
Diagnosis delay time—
 
 
POSSIBLE CAUSE
  • Harness or connectors (APP sensor 1 circuit is open or shorted.)
  • Accelerator pedal position sensor (APP sensor 1)
 
 
FAIL-SAFE
Engine operating condition in fail-safe mode
Fail safe modeVehicle behavior
Traveling control modeAccelerator angle variation controlECM controls the accelerator pedal depression speed to make it slower than actual speed. This causes a drop in accelerating performance and encourages the driver to repair malfunction.
noteECM does not control the accelerator pedal releasing speed.
Engine output controlECM reduces the engine output, according to the rise in engine speed. This reduces the vehicle speed to encourage the driver to repair malfunction.
  • Driving at 70 km/h (44 MPH) or more is possible.
noteThis value is a reference value converted from engine power to vehicle speed. Actual power limitation value differs due to the malfunctioning part and driving condition.
ECM reduces the engine output, according to the rise in engine speed. This reduces the vehicle speed to encourage the driver to repair malfunction.
  • Driving at 40 km/h (25 MPH) or more is possible.
noteThis value is a reference value converted from engine power to vehicle speed. Actual power limitation value differs due to the malfunctioning part and driving condition.
Device fix mode
  • This mode fixes the electric IVT motor and the EVT control solenoid valve in the reference position.
  • The intake manifold runner control valve motor is turned OFF (intake manifold runner control valve opens).
  • A control signals is not transmitted to EGR volume control valve and the EGR volume control is deactivated.
 
 
DTC Confirmation Procedure
1.CHECK DTC PRIORITY
If DTC P2123 is displayed with DTC P06B0, first perform the trouble diagnosis for DTC P06B0.
Is applicable DTC detected?
Perform diagnosis of applicable. Refer to DTC Description.
.
 
2.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.
  1. Turn ignition switch OFF and wait at least 10 seconds.
  2. Turn ignition switch ON.
  3. Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 8 V at idle.
: .
 
3.PERFORM DTC CONFIRMATION PROCEDURE
  1. Start engine and let it idle for 1 second.
  2. Check DTC.
Is DTC detected?
Proceed to DTC Diagnosis Procedure.
-1To check malfunction symptom before repair: Refer to Intermittent IncidentIntermittent Incident.
-2Confirmation after repair: INSPECTION END