DTC P2138
Precautions: General safety (00)
DTC Detecting Condition and Trouble Area
| DTC detecting condition | Trouble area |
|---|---|
|
P2138: Throttle / Pedal Position Sensor / Switch “D” / “E” Voltage Correlation Difference between half of APP (main) sensor signal and APP (sub) sensor signal is more than specified value. (1 D/C detection logic) |
•APP sensor and/or its circuit
•ECM |
Circuit Diagram
| [A]: | ECM connector (View: [a]) | B1: | APP sensor (sub) power supply circuit | 2. | APP sensor (main) |
| A1: | APP sensor (main) power supply circuit | B2: | APP sensor (sub) signal circuit | 3. | APP sensor (sub) |
| A2: | APP sensor (main) signal circuit | B3: | APP sensor (sub) ground circuit | 4. | ECM |
| A3: | APP sensor (main) ground circuit | 1. | APP sensor |
DTC Confirmation Procedure
NOTE:
•Check that the following condition is met in this “DTC Confirmation Procedure”.
—System voltage > 8 V
•Check that the following DTCs are not detected in this “DTC Confirmation Procedure”.
—APP sensor (P2122, P2123, P2127 and P2128)
1)Set ignition “ON”.
2)Keep accelerator pedal at fully depressed position for 2 sec.
3)Release accelerator pedal for 2 sec.
4)Repeat Step 2) – 3) 3 times.
DTC Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Was “Engine and Emission Control System Check” performed?
|
Go to Step 2.
|
|
| 2 |
Wire harness check
1)Check the following points.
•“A1”, “A2” and “A3” circuits: Refer to Step 3 – 5 under DTC P2122 / P2123:M16A.
•“B1”, “B2” and “B3” circuits: Refer to Step 3 – 5 under DTC P2127 / P2128:M16A. Is check result OK?
|
Go to Step 3.
|
Repair or replace defective wire harness.
|
| 3 |
APP sensor check
1)Check APP sensor for performance.
Is check result OK?
|
Replace ECM and recheck DTC.
|
Replace accelerator pedal assembly.
|