Dtc P2138: Pedal Position Sensor (Main / Sub) Voltage Correction - Suzuki 2006 SX4 Service Manual

1A-122 Engine General Information and Diagnosis:
Step
4 Wire harness check
1) Check TP sensor (main and sub) circuit for condition.
For TP sensor (main) circuit, refer to Step 3 of "DTC
P0122 / P0123: Throttle / Pedal Position Sensor / Switch
"A" Circuit Low / High".
For TP sensor (sub) circuit, refer to Step 3 of "DTC
P0222 / P0223: Throttle Position Sensor (Sub) Circuit
Low / High".
Is it in good condition?

DTC P2138: Pedal Position Sensor (Main / Sub) Voltage Correction

Wiring Diagram
Refer to "DTC P0122 / P0123: Throttle / Pedal Position Sensor / Switch "A" Circuit Low / High".
DTC Detecting Condition and Trouble Area
DTC detecting condition
Difference between the opening angle based on APP
sensor (main) and the opening angle based on APP
sensor (sub) is more than specification for 0.5 sec.
(1 driving detection logic)
DTC Confirmation Procedure
1) With ignition switch turned OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC by using scan tool.
3) Keep the accelerator pedal at idle position for 2 sec.
4) Keep the accelerator pedal at fully depressed position for 2 sec.
5) Repeat Step 3) and 4) for 3 times.
6) Check DTC.
DTC Troubleshooting
Step
1 Was "Engine and Emission Control System Check"
performed?
2 TP sensor 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" and
"APP Sensor 2 Volt" displayed on scan tool when
accelerator pedal is idle position and fully depressed.
Is displayed each APP sensor value as described voltage in
"Scan Tool Data"?
3 APP sensor check
1) Check APP sensor for performance referring to
"Accelerator Pedal Position (APP) Sensor Assembly On-
Vehicle Inspection in Section 1C".
Is it in good condition?
Action
Action
Yes
Substitute a known-
good ECM and recheck.
Trouble area
• APP sensor (main) and/or its circuit
• APP sensor assembly
• ECM
Yes
Go to Step 2.
Intermittent trouble.
Check for intermittent
referring to "Intermittent
and Poor Connection
Inspection in Section
00".
Go to Step 4.
No
Repair or replace.
S6RW0C1104073
No
Go to "Engine and
Emission Control
System Check".
Go to Step 3.
Replace APP sensor
assembly.