P2127

DTC P2127 / P2128

DTC Detecting Condition and Trouble Area






Circuit Diagram










DTC Confirmation Procedure

NOTE:

Confirm that the following conditions are met in this "DTC Confirmation Procedure".

- Battery voltage >= 11 V

1) Push engine switch to change ignition mode to "ON".
2) Run engine at idle speed for 2 sec. or more.

DTC Troubleshooting


1. Was "Engine and Emission Control System Check" performed?
YES
Go to Step 2.
NO
Go to Engine and Emission Control System Check Engine and Emission Control System Check.
2. APP sensor (sub) power supply circuit check
Confirm that ignition mode of keyless push start system is in "OFF".
Disconnect connector from accelerator pedal assembly (with APP sensor).
Check for proper terminal connection to accelerator pedal assembly (with APP sensor) connector.
If connections are OK, push engine switch to change ignition mode to "ON".
Check that voltage between "B1" and "B3" circuits are 5 V.
Are they in good condition?
YES
Go to Step 5.
NO
Go to Step 3.
3. APP sensor (sub) ground circuit check
Check that voltage between "B1" circuit and ground is 5 V.
Is it in good condition?
YES
Repair or replace "B3" circuit.
If this DTC is detected again, replace ECM and recheck DTC. Service and Repair
NO
Go to Step 4.
4. APP sensor (sub) power supply circuit check
Push engine switch to change ignition mode to "OFF".
Disconnect "C01" and "E01" connectors.
Check for proper terminal connection to "C01" and "E01" connectors.
If connections are OK, check the following points.
Resistance of "B1" circuit: less than 1
Resistance of "B1" circuit between accelerator pedal assembly (with APP sensor) connector and ground: infinity
Resistance between "B1" circuit terminal and each terminal at accelerator pedal assembly (with APP sensor) connector: infinity
Voltage of "B1" circuit: 0 - 1 V (with ignition mode of keyless push start system in "ON")
Are they in good condition?
YES
Replace ECM and recheck DTC. Service and Repair
NO
Repair or replace defective wire harness.
5. APP sensor (sub) signal circuit check
Push engine switch to change ignition mode to "OFF".
Disconnect "C01" and "E01" connectors.
Check for proper terminal connection to "C01" and "E01" connectors.
If connections are OK, check the following points.
Resistance of "B2" circuit: less than 1
Resistance of "B2" circuit between accelerator pedal assembly (with APP sensor) connector and ground: infinity
Resistance between "B2" circuit terminal and each terminal at accelerator pedal assembly (with APP sensor) connector: infinity
Voltage of "B2" circuit: 0 - 1 V (with ignition mode of keyless push start system in "ON")
Are they in good condition?
YES
Go to Step 6.
NO
Repair or replace defective wire harness.
6. APP sensor check
Check APP sensor. APP Sensor Inspection
Is it in good condition?
YES
Replace ECM and recheck DTC. Service and Repair
NO
Replace accelerator pedal assembly (with APP sensor). Accelerator Pedal Assembly (Incorporating APP Sensor) Removal and Installation