P2127

P2127, P2128 APP SENSOR





DTC Logic

DTC DETECTION LOGIC






DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10 V at idle.
- GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine and let it idle for 1 second.
2. Check DTC.
Is DTC detected?
YES - Go to SEE Diagnosis Procedure.
NO - INSPECTION END




Diagnosis Procedure
1.CHECK GROUND CONNECTION
1. Turn ignition switch OFF.
2. Check ground connection M95. Refer to Ground Inspection in Circuit Inspection.
Is the inspection result normal?
YES - GO TO 2.
NO - Repair or replace ground connection.
2.CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-I
1. Disconnect accelerator pedal position (APP) sensor harness connector.
2. Turn ignition switch ON.
3. Check the voltage between APP sensor harness connector and ground.





Is the inspection result normal?
YES - GO TO 7.
NO - GO TO 3.
3.CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-II
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between APP sensor harness connector and ECM harness connector.





Is the inspection result normal?
YES - GO TO 5.
NO - GO TO 4 (With ICC).
NO - Repair open circuit, short to ground or short to power in harness or connectors (Without ICC).
4.DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors M150, M151
- Harness for open or short between ECM and accelerator pedal position sensor
- Repair open circuit, short to ground or short to power in harness or connectors.
5.CHECK SENSOR POWER SUPPLY CIRCUIT
Check harness for short to power and short to ground, between the following terminals.





Is the inspection result normal?
YES - GO TO 6.
NO - Repair short to ground or short to power in harness or connectors.
6.CHECK COMPONENTS
Check the following.
- Crankshaft position sensor (POS) ( P0335.)
- Camshaft position sensor (PHASE) (bank 2) ( P0340.)
- Battery current sensor ( P1550.)
- EVAP control system pressure sensor ( P0451.)
- Refrigerant pressure sensor ( Testing and Inspection.)
Is the inspection result normal?
YES - GO TO 13.
NO - Replace malfunctioning component.
7.CHECK APP SENSOR 2 GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between APP sensor harness connector and ECM harness connector.





4. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES - GO TO 9.
NO - GO TO 8 (With ICC).
NO - Repair open circuit, short to ground or short to power in harness or connectors (Without ICC).
8.DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors M150, M151
- Harness for open or short between ECM and accelerator pedal position sensor
- Repair open circuit, short to ground or short to power in harness or connectors.
9.CHECK APP SENSOR 2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check the continuity between APP sensor harness connector and ECM harness connector.





2. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES - GO TO 11.
NO - GO TO 10 (With ICC).
NO - Repair open circuit, short to ground or short to power in harness or connectors (Without ICC).
10.DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors M150, M151
- Harness for open or short between ECM and accelerator pedal position sensor
- Repair open circuit, short to ground or short to power in harness or connectors.
11.CHECK APP SENSOR
SEE Component Inspection.
Is the inspection result normal?
YES - GO TO 13.
NO - GO TO 12.
12.REPLACE ACCELERATOR PEDAL ASSEMBLY
1. Replace accelerator pedal assembly.
2. Go to SEE Special Repair Requirement.
- INSPECTION END
13.CHECK INTERMITTENT INCIDENT
Intermittent Incident.
- INSPECTION END




Component Inspection
1.CHECK ACCELERATOR PEDAL POSITION SENSOR
1. Turn ignition switch OFF.
2. Reconnect all harness connectors disconnected.
3. Turn ignition switch ON.
4. Check the voltage ECM harness connector terminals as per the following.





Is the inspection result normal?
YES - INSPECTION END
NO - GO TO 2.
2.REPLACE ACCELERATOR PEDAL ASSEMBLY
1. Replace accelerator pedal assembly.
2. Go to P2122.
- INSPECTION END




Special Repair Requirement
1.PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
Work Procedure.
- GO TO 2.
2.PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Work Procedure.
- GO TO 3.
3.PERFORM IDLE AIR VOLUME LEARNING
Work Procedure.
- END