Dtc P2123: Pedal Position Sensor (Main) Circuit High Input - Suzuki SX4 Service Manual

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Step
6
Wire harness check
1) Disconnect connectors from ECM with ignition switch
turned OFF.
2) Measure resistance between "E01-35" terminal of ECM
connector and engine ground.
Is resistance infinity?
7
Wire harness check
1) Disconnect connectors from ECM with ignition switch
turned OFF.
2) Check for proper connection of ECM connector at "E01-
37", "E01-52" and "E01-51" terminals.
3) If OK, measure resistance between "GRN" wire terminal
of APP sensor assembly connector and vehicle body
ground.
Is resistance infinity?
8
Wire harness check
1) Measure resistance between "E01-37" and each "E01-
52", "E01-51", "E01-50" terminals of ECM connector with
ignition switch turned OFF.
Is each resistance infinity?
9
Wire harness check
1) Measure resistance between "GRN" wire terminal of
APP sensor assembly connector and "E01-37" terminal
of ECM connector with ignition switch turned OFF.
Is resistance below 5
10 APP sensor assembly check
1) Check APP sensor (main) referring to "Accelerator Pedal
Position (APP) Sensor Assembly Inspection in Section
1C".
Is output voltage within specified value?

DTC P2123: Pedal Position Sensor (Main) Circuit High Input

Wiring Diagram
Refer to "DTC P2122: Pedal Position Sensor (Main) Circuit Low Input".
DTC Detecting Condition and Trouble Area
DTC detecting condition
Output voltage of APP sensor (main) is higher than specified value.
(1 driving detection logic)
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.
Action
?
Engine General Information and Diagnosis:
Yes
Substitute a known-
good ECM and recheck.
Go to Step 8.
Go to Step 9.
Go to Step 10.
Substitute a known-
good ECM and recheck.
• APP sensor (main) circuit
• APP sensor assembly
• ECM
• Incorrect mounting of APP sensor assembly
1A-153
No
"BRN" wire is shorted to
ground circuit.
"GRN" wire is shorted to
ground circuit.
"GRN" wire is shorted to
"BLU" wire and/or
"WHT" wire and/or
"E01-50" circuit.
"GRN" wire is open or
high resistance circuit.
Replace APP sensor
assembly.
S7RW0A1104065
Trouble area

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