DTC P2127-00: Throttle/Pedal Position Sensor/Switch "E" Circuit Low [08/2018 - ]: Procedure
- VISUALLY INSPECT ECM CONNECTOR
- Perform the ECM connector Inspection.
- Inspect the ECM connector pin type.
Result
Result 200 Pin Type 186 Pin Type
Result:
186 Pin Type
See step 17
Result:
200 Pin Type
See step 2
- INSPECT APP SENSOR CONNECTOR CONDITION
- Switch the ignition off.
- Disconnect the APP sensor connector.
- Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
- Is there any malfunction?
Result
Result Yes No
Result:
Yes
See step 16
Result:
No
See step 3
- INSPECT APP SENSOR NO. 2 CIRCUIT FOR SHORT TO GROUND
- Verify that the APP sensor connector is disconnected.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition E7-6 - Body ground Always 10 kΩ or higher E7-5 - Body ground Always 10 kΩ or higher Result
Result Yes No
Result:
No
See step 15
Result:
Yes
See step 4
- INSPECT ECM CONNECTOR CONDITION
- Disconnect the ECM connector.
- Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
- Is there any malfunction?
Result
Result Yes No
Result:
Yes
See step 14
Result:
No
See step 5
- INSPECT APP SENSOR NO. 2 SIGNAL CIRCUIT AND GROUND CIRCUIT FOR SHORT TO EACH OTHER
- Verify that the APP sensor and ECM connectors are disconnected.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition E7-5 - Other terminals Always 10 kΩ or higher E7-4 - Other terminals Always 10 kΩ or higher Result
Result Yes No
Result:
No
See step 13
Result:
Yes
See step 6
- INSPECT APP SENSOR NO. 2 CIRCUIT FOR OPEN CIRCUIT
- Verify that the APP sensor and ECM connectors are disconnected.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition E7-6 - A42-29 Always Below 1 Ω E7-5 - A42-43 Always Below 1 Ω Result
Result Yes No
Result:
No
See step 12
Result:
Yes
See step 7
- INSPECT APP SENSOR NO. 2
- Reconnect all disconnected connectors.
- Inspect the APP sensor No. 2.
Refer to INSPECTION [07/2015 - ]
- Is there any malfunction?
Result
Result Yes No
Result:
Yes
See step 11
Result:
No
See step 8
- VERIFY DTC TROUBLESHOOTING COMPLETED
- Always reconnect all disconnected connectors.
- Clear the DTC from the ECM memory using the Techstream.
Refer to AFTER REPAIR PROCEDURE [07/2015 - ]
Powertrain > Engine > Clear DTCs
- Perform the KOEO or KOER self test.
Refer to ON-DEMAND SELF-TEST/KEY-ON ENGINE RUNNING SELF-TEST [07/2015 - ]
Powertrain > Engine > Utility
Tester Display Key-On Engine Running Self-Test Powertrain > Engine > Utility
Tester Display On-Demand Self-Test - Is the same DTC present?
Result
Result Yes No
Result:
Yes
See step 10
Result:
No
See step 9
- VERIFY AFTER REPAIR PROCEDURE
- Perform the "AFTER REPAIR PROCEDURE".
Refer to AFTER REPAIR PROCEDURE [07/2015 - ]
- Are any DTCs present?
Result
Result Yes No
Result:
No
DTC TROUBLESHOOTING COMPLETED.
Result:
Yes
GO TO THE APPLICABLE DTC INSPECTION.
- Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2018 - 08/2019] , or refer to DIAGNOSTIC TROUBLE CODE CHART [08/2019 - ]
- Perform the "AFTER REPAIR PROCEDURE".
- REPEAT THE INSPECTION FROM STEP 2.
- If the malfunction recurs, replace the ECM.
Refer to REMOVAL [07/2015 - ]
- Go to the next step.
Result
Proceed to NEXT
Result:
NEXT
See step 9
- If the malfunction recurs, replace the ECM.
- REPLACE THE ACCELERATOR PEDAL.
- Refer to REMOVAL [07/2015 - ]
- Then go to the next step.
Result
Proceed to NEXT
Result:
NEXT
See step 8
- REFER TO THE WIRING DIAGRAM AND VERIFY WHETHER OR NOT THERE IS A COMMON CONNECTOR BETWEEN THE FOLLOWING TERMINALS:
- APP sensor terminal E7-6-ECM terminal A42-29
- APP sensor terminal E7-5-ECM terminal A42-43
If there is a common connector:
- Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.
- Repair or replace the malfunctioning part.
If there is no common connector:
- Repair or replace the wiring harness which has an open circuit.
Result:
NEXT
See step 8
- REFER TO THE WIRING DIAGRAM AND VERIFY WHETHER OR NOT THERE IS A COMMON CONNECTOR BETWEEN THE FOLLOWING TERMINALS:
- APP sensor terminal E7-5-ECM terminal A42-43
- APP sensor terminal E7-4-ECM terminal A42-58
If there is a common connector:
- Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to each other.
- Repair or replace the malfunctioning part.
If there is no common connector:
- Repair or replace the wiring harness which has a short to each other.
Result:
NEXT
See step 8
- REPAIR OR REPLACE THE CONNECTOR AND/OR TERMINALS.
Result:
NEXT
See step 8
- DISCONNECT THE ECM CONNECTOR.
- If the short to ground circuit could be detected in the wiring harness:
- Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
- APP sensor terminal E7-6-ECM terminal A42-29
- APP sensor terminal E7-5-ECM terminal A42-43
If there is a common connector:
- Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground.
- Repair or replace the malfunctioning part.
If there is no common connector:
- Repair or replace the wiring harness which has a short to ground.
- Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
- If the short to ground circuit could not be detected in the wiring harness:
- Replace the ECM (short to ground in the ECM internal circuit).
Refer to REMOVAL [07/2015 - ]
- Replace the ECM (short to ground in the ECM internal circuit).
- Go to the next step.
Result
Proceed to NEXT
Result:
NEXT
See step 8
- If the short to ground circuit could be detected in the wiring harness:
- REPAIR OR REPLACE THE CONNECTOR AND/OR TERMINALS.
Result:
NEXT
See step 8
- INSPECT APP SENSOR CONNECTOR CONDITION
- Switch the ignition off.
- Disconnect the APP sensor connector.
- Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
- Is there any malfunction?
Result
Result Yes No
Result:
Yes
See step 31
Result:
No
See step 18
- INSPECT APP SENSOR NO. 2 CIRCUIT FOR SHORT TO GROUND
- Verify that the APP sensor connector is disconnected.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition E69-6 - Body ground Always 10 kΩ or higher E69-5 - Body ground Always 10 kΩ or higher Result
Result Yes No
Result:
No
See step 30
Result:
Yes
See step 19
- INSPECT ECM CONNECTOR CONDITION
- Disconnect the ECM connector.
- Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
- Is there any malfunction?
Result
Result Yes No
Result:
Yes
See step 29
Result:
No
See step 20
- INSPECT APP SENSOR NO. 2 SIGNAL CIRCUIT AND GROUND CIRCUIT FOR SHORT TO EACH OTHER
- Verify that the APP sensor and ECM connectors are disconnected.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition E69-5 - Other terminals Always 10 kΩ or higher E69-4 - Other terminals Always 10 kΩ or higher Result
Result Yes No
Result:
No
See step 28
Result:
Yes
See step 21
- INSPECT APP SENSOR NO. 2 CIRCUIT FOR OPEN CIRCUIT
- Verify that the APP sensor and ECM connectors are disconnected.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition E69-6 - A43-55 Always Below 1 Ω E69-5 - A43-70 Always Below 1 Ω Result
Result Yes No
Result:
No
See step 27
Result:
Yes
See step 22
- INSPECT APP SENSOR NO. 2
- Reconnect all disconnected connectors.
- Inspect the APP sensor No. 2.
Refer to INSPECTION [07/2015 - ]
- Is there any malfunction?
Result
Result Yes No
Result:
Yes
See step 26
Result:
No
See step 23
- VERIFY DTC TROUBLESHOOTING COMPLETED
- Always reconnect all disconnected connectors.
- Clear the DTC from the ECM memory using the Techstream.
Refer to AFTER REPAIR PROCEDURE [07/2015 - ]
Powertrain > Engine > Clear DTCs
- Perform the KOEO or KOER self test.
Refer to ON-DEMAND SELF-TEST/KEY-ON ENGINE RUNNING SELF-TEST [07/2015 - ]
Powertrain > Engine > Utility
Tester Display Key-On Engine Running Self-Test Powertrain > Engine > Utility
Tester Display On-Demand Self-Test - Is the same DTC present?
Result
Result Yes No
Result:
Yes
See step 25
Result:
No
See step 24
- VERIFY AFTER REPAIR PROCEDURE
- Perform the "AFTER REPAIR PROCEDURE".
Refer to AFTER REPAIR PROCEDURE [07/2015 - ]
- Are any DTCs present?
Result
Result Yes No
Result:
No
DTC TROUBLESHOOTING COMPLETED.
Result:
Yes
GO TO THE APPLICABLE DTC INSPECTION.
- Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2018 - 08/2019] , or refer to DIAGNOSTIC TROUBLE CODE CHART [08/2019 - ]
- Perform the "AFTER REPAIR PROCEDURE".
- REPEAT THE INSPECTION FROM STEP 17.
- If the malfunction recurs, replace the ECM.
Refer to REMOVAL [07/2015 - ]
- Go to the next step.
Result
Proceed to NEXT
Result:
NEXT
See step 24
- If the malfunction recurs, replace the ECM.
- REPLACE THE ACCELERATOR PEDAL.
- Refer to REMOVAL [07/2015 - ]
- Then go to the next step.
Result
Proceed to NEXT
Result:
NEXT
See step 23
- REFER TO THE WIRING DIAGRAM AND VERIFY WHETHER OR NOT THERE IS A COMMON CONNECTOR BETWEEN THE FOLLOWING TERMINALS:
- APP sensor terminal E69-6-ECM terminal A43-55
- APP sensor terminal E69-5-ECM terminal A43-70
If there is a common connector:
- Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.
- Repair or replace the malfunctioning part.
If there is no common connector:
- Repair or replace the wiring harness which has an open circuit.
Result:
NEXT
See step 23
- REFER TO THE WIRING DIAGRAM AND VERIFY WHETHER OR NOT THERE IS A COMMON CONNECTOR BETWEEN THE FOLLOWING TERMINALS:
- APP sensor terminal E69-5-ECM terminal A43-70
- APP sensor terminal E69-4-ECM terminal A43-58
If there is a common connector:
- Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to each other.
- Repair or replace the malfunctioning part.
If there is no common connector:
- Repair or replace the wiring harness which has a short to each other.
Result:
NEXT
See step 23
- REPAIR OR REPLACE THE CONNECTOR AND/OR TERMINALS.
Result:
NEXT
See step 23
- DISCONNECT THE ECM CONNECTOR.
- If the short to ground circuit could be detected in the wiring harness:
- Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
- APP sensor terminal E69-6-ECM terminal A43-55
- APP sensor terminal E69-5-ECM terminal A43-70
If there is a common connector:
- Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground.
- Repair or replace the malfunctioning part.
If there is no common connector:
- Repair or replace the wiring harness which has a short to ground.
- Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
- If the short to ground circuit could not be detected in the wiring harness:
- Replace the ECM (short to ground in the ECM internal circuit).
Refer to REMOVAL [07/2015 - ]
- Replace the ECM (short to ground in the ECM internal circuit).
- Go to the next step.
Result
Proceed to NEXT
Result:
NEXT
See step 23
- If the short to ground circuit could be detected in the wiring harness:
- REPAIR OR REPLACE THE CONNECTOR AND/OR TERMINALS.
Result:
NEXT
See step 23