SFI SYSTEM, Diagnostic DTC:P0122,P0123,P0222 and P0223

DTC Code	DTC Name
P0122	Throttle / Pedal Position Sensor / Switch "A" Circuit Low Input
P0123	Throttle / Pedal Position Sensor / Switch "A" Circuit High Input
P0222	Throttle / Pedal Position Sensor / Switch "B" Circuit Low Input
P0223	Throttle / Pedal Position Sensor / Switch "B" Circuit High Input

DESCRIPTION

Refer to DTC P0121.

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DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory
P0122	Throttle / Pedal Position Sensor / Switch "A" Circuit Low Input	Output voltage of VTA1 0.2 V or less for 0.14 seconds or more (1 trip detection logic).	Throttle position sensor (throttle body with motor assembly) Open or short in VTA1 circuit Open in VC circuit ECM	Comes on	DTC stored
P0123	Throttle / Pedal Position Sensor / Switch "A" Circuit High Input	Output voltage of VTA1 4.8 V or more for 0.14 seconds or more (1 trip detection logic).	Throttle position sensor (throttle body with motor assembly) Open in VTA1 circuit Open in ETA circuit Short between VC and VTA1 circuits ECM	Comes on	DTC stored
P0222	Throttle / Pedal Position Sensor / Switch "B" Circuit Low Input	Output voltage of VTA2 0.2 V or less for 0.14 seconds or more (1 trip detection logic).	Throttle position sensor (throttle body with motor assembly) Open or short in VTA2 circuit Open in VC circuit ECM	Comes on	DTC stored
P0223	Throttle / Pedal Position Sensor / Switch "B" Circuit High Input	Output voltage of VTA2 4.8 V or more for 0.14 seconds or more (1 trip detection logic).	Throttle position sensor (throttle body with motor assembly) Open in VTA2 circuit Open in ETA circuit Short between VC and VTA2 circuits ECM	Comes on	DTC stored

WIRING DIAGRAM

Refer to DTC P0121.

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CONFIRMATION DRIVING PATTERN

These DTCs are detected when the ignition switch is ON or the engine is running.

CAUTION / NOTICE / HINT

Note:

After replacing the ECM and/or throttle body with motor assembly, perform electronic throttle learning and idle learning.
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If any DTCs related to the crankshaft position sensor sensor, throttle position sensor and accelerator pedal sensor assembly are output simultaneously, inspect the VC circuit of each component.

Tip:

Read freeze frame data using the GTS. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE

READ VALUE USING GTS (THROTTLE POSITION SENSOR)

Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.

Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Throttle Position No.1 and Throttle Position No.2.

Powertrain > Engine and ECT > Data List


Tester Display
Throttle Position No.1
Throttle Position No.2

Read the values displayed on the GTS.

Result


When Accelerator Pedal Fully Released		When Accelerator Pedal Fully Depressed		Trouble Area	Proceed to
Throttle Position No.1 (VTA1)	Throttle Position No.2 (VTA2)	Throttle Position No.1 (VTA1)	Throttle Position No.2 (VTA2)	Trouble Area	Proceed to
4.8 to 4.98 V	0 to 0.2 V	4.8 to 4.98 V	0 to 0.2 V	VC circuit open	A
4.5 to 4.98 V	0 to 0.2 V	4.8 to 4.98 V	0 to 0.2 V	ETA circuit open
0 to 0.2 V, or 4.8 to 4.98 V	3.9 to 4.4 V	0 to 0.2 V, or 4.8 to 4.98 V	3.9 to 4.3 V	VTA1 circuit open or shorted to ground
0.6 to 1.1 V	0 to 0.2 V, or 4.8 to 4.98 V	0.7 to 1.1 V	0 to 0.2 V, or 4.8 to 4.98 V	VTA2 circuit open or shorted to ground
0.6 to 1.1 V	3.9 to 4.4 V	4.2 to 4.54 V	0.46 to 0.76 V	Throttle position sensor circuit normal	B

B

CHECK WHETHER DTC OUTPUT RECURS (DTC P0122, P0123, P0222 OR P0223)Click here

A

CHECK HARNESS AND CONNECTOR (THROTTLE BODY WITH MOTOR ASSEMBLY - ECM)

Disconnect the throttle body with motor assembly connector.
Disconnect the ECM connector.

Measure the resistance according to the value(s) in the table below.

Standard Resistance


Tester Connection	Condition	Specified Condition
B15-5 (VC) - B31-115 (VC)	Always	Below 1 Ω
B15-6 (VTA) - B31-84 (VTA1)	Always	Below 1 Ω
B15-4 (VTA2) - B31-83 (VTA2)	Always	Below 1 Ω
B15-3 (E2) - B31-116 (ETA)	Always	Below 1 Ω
B15-5 (VC) or B31-115 (VC) - Body ground	Always	10 kΩ or higher
B15-6 (VTA) or B31-84 (VTA1) - Body ground	Always	10 kΩ or higher
B15-4 (VTA2) or B31-83 (VTA2) - Body ground	Always	10 kΩ or higher
B15-3 (E2) or B31-116 (ETA) - Body ground	Always	10 kΩ or higher

Result


Proceed to
OK
NG

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

CHECK TERMINAL VOLTAGE (POWER SOURCE OF THROTTLE BODY WITH MOTOR ASSEMBLY)

*a	Front view of wire harness connector (to Throttle Body with Motor Assembly)

Disconnect the throttle body with motor assembly connector.
Turn the ignition switch to ON.

Measure the voltage according to the value(s) in the table below.

Standard Voltage


Tester Connection	Condition	Specified Condition
B15-5 (VC) - B15-3 (E2)	Ignition switch ON	4.5 to 5.5 V

Result


Proceed to
OK
NG

NG

REPLACE ECM

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OK

REPLACE THROTTLE BODY WITH MOTOR ASSEMBLY

Replace the throttle body with motor assembly.
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Perform electronic throttle learning and idle learning.
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Result


Proceed to
NEXT

Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear the DTCs.

Powertrain > Engine and ECT > Clear DTCs
Turn the ignition switch off and wait for at least 30 seconds.
Start the engine.
Turn the GTS on.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
Read the DTCs.

Powertrain > Engine and ECT > Trouble Codes

OK

DTCs are not output

Result


Proceed to
OK
NG

OK

END

NG

REPLACE ECM

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