4C20 Gasoline Engine Repair Manual
(d) Possible causes of failure:
(d) Possible causes of failure:
motor torque is limited;
(b) Malfunction detection principle: a malfunction code is output when the following malfunctions are detected
(1) Short or open in throttle position sensor #1 circuit;
(1) If there are no other faults, the engine runs normally. But if there is a malfunction of the throttle position
sensor or the intake air pressure sensor, the throttle valve is put into a protected mode, the engine is put into
emergency mode, the engine torque is limited.
(2) Engine power may fluctuate when idling. In this mode, you can carefully drive home, but driving in traffic and
on the slope is much more difficult.
1 second).
1 accelerator pedal position below 3.5%.
(c) Emergency operation:
DTC P2110: Engine Power Management System Malfunction
(b) Malfunction detection principle: The engine control unit determines that the signal value of the accelerator pedal
position sensor No. 1 is greater than 97.5%.
DTC P2122 - Accelerator Pedal Position Sensor Circuit Low #1
(3) Malfunction of the accelerator pedal position sensor.
(2) Short or open in the accelerator pedal position sensor No. 2 circuit;
(c) Emergency operation:
(a) Prerequisites: The ignition key is in the ON position (b) Fault detection principle:
(1) Short or open in throttle position sensor #1 circuit;
(3) Strong external electromagnetic interference.
(1) Throttle return spring failure;
(d) Possible causes of failure:
(2) The maximum engine torque is limited in the absence of other malfunctions, but it is still possible to continue
driving in emergency engine operation.
stay:
(2) Short or open in throttle position sensor #2 circuit;
(d) Possible causes of failure:
(1) Short to ground or open circuit between the No. 1 accelerator pedal position sensor and the unit
engine control;
(c) Emergency operation:
(c) Emergency operation: not provided.
(c) Emergency operation: not provided.
(a) Prerequisites: The controller is connected.
(1) Throttle works in protected mode, engine works in emergency mode, torque
(d) Possible causes of failure:
engine control;
(4) Strong external electromagnetic interference.
motor torque is limited;
(2) The throttle return time is longer than the set value (such as
(b) Malfunction detection principle: the engine control unit determines that the signal value of sensor No.
(3) Accelerator pedal position sensor No. 1 and accelerator pedal position sensor No. 2 mismatch (two input
values mismatch);
(1) Throttle works in protected mode, engine works in emergency mode, torque
(1) Default throttle position is 10-34%;
(a) Prerequisites: The engine is running.
DTC P2123 - Accelerator Pedal Position Sensor Circuit High Voltage #1
(a) Prerequisites: The engine is running.
DTC P2119 - Throttle does not reset
(2) Throttle body clogged with foreign matter.
(2) Unreliable electrical connections
(1) Short or open in the accelerator pedal position sensor No. 1 circuit;
(2) Short or open in throttle position sensor #2 circuit;
(1) Short to 5V power supply in the circuit between the No. 1 accelerator pedal position sensor and the block
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