Engine General Information and Diagnosis: 1A-198
DTC P2123: Pedal Position Sensor (Main) Circuit High Input
S5JB0A1104083
Wiring Diagram
Refer to “DTC P2122: Pedal Position Sensor (Main) Circuit Low Input: ”.
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
1) With ignition switch turned OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Keep the accelerator pedal at idle position for 2 seconds.
4) Keep the accelerator pedal at fully depressed position for 2 seconds.
5) Repeat Step 3) and 4) for 3 times.
6) Check DTC.
DTC Troubleshooting
NOTE
Before this trouble shooting is performed, read the precautions for DTC troubleshooting referring to
“Precautions For DTC Troubleshooting: ”.
DTC detecting condition
Trouble area
Output voltage of accelerator pedal position sensor (main)
is more than specified value for 0.5 seconds continuously.
(1 driving detection logic)
• Accelerator pedal position (APP) sensor (main) circuit
• Accelerator pedal position (APP) sensor assembly
• ECM
• Incorrect mounting of accelerator pedal position (APP)
sensor assembly
Step
Action
Yes
No
1
Was “Engine and Emission Control System Check”
performed?
Go to Step 2.
Go to “Engine and
Emission Control
System Check: ”.
2
Accelerator pedal position (APP) sensor assembly
mounting check
1) Check that accelerator pedal position (APP) sensor
assembly has been mounted to vehicle body properly
(no pinched floor carpet, etc).
Is it OK?
Go to Step 3.
Reinstall accelerator
pedal position (APP)
sensor assembly
properly referring to
“Accelerator Pedal
Position (APP) Sensor
Assembly Removal and
Installation: in Section
1C”.
3
Accelerator pedal position sensor (main) and its circuit
check
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Turn ON ignition switch, check “APP Sensor 1 Volt”
displayed on scan tool.
Is displayed voltage 4.8 V or more?
Go to Step 4.
Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection: in Section
00”.
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