DTC P2127:00 [PCM (SKYACTIV-D 2.2)]

id0102j5708500


Engine Type

Item

Reference
Fuel injector (2 pin type)
(See Fuel injector (2 pin type).)
Fuel injector (6 pin type)
(See Fuel injector (6 pin type).)


Fuel injector (2 pin type)

DTC P2127:00

APP sensor No.2 circuit low input
DETECTION CONDITION
•  The PCM monitors the input voltage from APP sensor No.2. If the input voltage at the PCM terminal 2AS is less than 0.22 V for 0.5 s, the PCM determines that the APP sensor No.2 circuit has a malfunction.
MONITORING CONDITIONS
―  Battery voltage: 8—20 V
―  0.5 s have elapsed after the ignition was switched ON (engine off or on)
Diagnostic support note
•  This is a continuous monitor (CCM).
•  The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle.
•  FREEZE FRAME DATA/Snapshot data is available.
•  DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION
•  Limits the engine torque or the upper limit of the engine speed.
•  Inhibits engine-stop by operating the i-stop function.
POSSIBLE CAUSE
•  APP sensor connector or terminals malfunction
•  Short to ground in wiring harness between the following terminals:
―  APP sensor terminal F—PCM terminal 2AR
―  APP sensor terminal E—PCM terminal 2AS
•  PCM connector or terminals malfunction
•  APP sensor No.2 signal circuit and ground circuit are shorted to each other
•  Open circuit in wiring harness between the following terminals:
―  APP sensor terminal F—PCM terminal 2AR
―  APP sensor terminal E—PCM terminal 2AS
•  APP sensor No.2 malfunction
•  PCM malfunction

Diagnostic Procedure

STEP

INSPECTION

ACTION
1
RECORD VEHICLE STATUS AT TIME OF DTC DETECTION TO UTILIZE WITH REPEATABILITY VERIFICATION
Note
•  Recording can be facilitated using the screen capture function of the PC.
•  Record the FREEZE FRAME DATA/snapshot data on the repair order.
—
Go to the next step.
2
VERIFY RELATED SERVICE INFORMATION AVAILABILITY
•  Verify related Service Information availability.
•  Is any related Service Information available?
Yes
Perform repair or diagnosis according to the available Service Information.
•  If the vehicle is not repaired, go to the next step.
No
Go to the next step.
3
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?
Yes
Repair or replace the connector and/or terminals, then go to Step 9.
No
Go to the next step.
4
INSPECT APP SENSOR NO.2 CIRCUIT FOR SHORT TO GROUND
•  Verify that the APP sensor connector is disconnected.
•  Inspect for continuity between the following terminals (wiring harness-side) and body ground:
―  APP sensor terminal F
―  APP sensor terminal E
•  Is there continuity?
Yes
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 F—PCM terminal 2AR
―  APP sensor terminal E—PCM terminal 2AS
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.
If the short to ground circuit could not be detected in the wiring harness:
•  Replace the PCM (short to ground in the PCM internal circuit).
Go to Step 9.
No
Go to the next step.
5
INSPECT PCM CONNECTOR CONDITION
•  Disconnect the PCM connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
•  Is there any malfunction?
Yes
Repair or replace the connector and/or terminals, then go to Step 9.
No
Go to the next step.
6
INSPECT APP SENSOR NO.2 SIGNAL CIRCUIT AND GROUND CIRCUIT FOR SHORT TO EACH OTHER
•  Verify that the APP sensor and PCM connectors are disconnected.
•  Inspect for continuity between APP sensor terminals E and D (wiring harness-side).
•  Is there continuity?
Yes
Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
•  APP sensor terminal E—PCM terminal 2AS
•  APP sensor terminal D—PCM terminal 2AT
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.
Go to Step 9.
No
Go to the next step.
7
INSPECT APP SENSOR NO.2 CIRCUIT FOR OPEN CIRCUIT
•  Verify that the APP sensor and PCM connectors are disconnected.
•  Inspect for continuity between the following terminals (wiring harness-side):
―  APP sensor terminal F—PCM terminal 2AR
―  APP sensor terminal E—PCM terminal 2AS
•  Is there continuity?
Yes
Go to the next step.
No
Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
•  APP sensor terminal F—PCM terminal 2AR
•  APP sensor terminal E—PCM terminal 2AS
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.
Go to Step 9.
8
INSPECT APP SENSOR NO.2
•  Reconnect all disconnected connectors.
•  Inspect the APP sensor No.2.
•  Is there any malfunction?
Yes
Replace the accelerator pedal, then go to the next step.
(See ACCELERATOR PEDAL REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
No
Go to the next step.
9
VERIFY DTC TROUBLESHOOTING COMPLETED
•  Always reconnect all disconnected connectors.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Perform the KOEO or KOER self test.
•  Is the same DTC present?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the PCM.
Go to the next step.
No
Go to the next step.
10
VERIFY AFTER REPAIR PROCEDURE
•  Perform the “AFTER REPAIR PROCEDURE”.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [PCM (SKYACTIV-D 2.2)].)
No
DTC troubleshooting completed.


Fuel injector (6 pin type)

DTC P2127:00

APP sensor No.2 circuit low input
DETECTION CONDITION
•  With the following conditions met, the output voltage of APP sensor No.2 is less than 0.13 V for a continuous 0.5 s.
―  Battery positive voltage: 8—16 V
―  0.5 s have elapsed after ignition is switched ON (engine off or on)
―  The following DTCs are not detected
•  Constant voltage power supply control system: P0652:00, P0653:00
Diagnostic support note
•  This is a continuous monitor (CCM).
•  The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle.
•  FREEZE FRAME DATA/Snapshot data is available.
•  DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION
•  Restricts the upper limit of the APP sensor output.
POSSIBLE CAUSE
•  APP sensor connector or terminal malfunction
•  Short to ground in wiring harness between the following terminals:
―  APP sensor terminal F and PCM terminal 2AR
―  APP sensor terminal E and PCM terminal 2AS
•  PCM connector or terminal malfunction
•  Short circuit in APP sensor No.2 signal circuit and ground circuit
•  Open circuit in wiring harness between the following terminals:
―  APP sensor terminal F and PCM terminal 2AR
―  APP sensor terminal E and PCM terminal 2AS
―  APP sensor terminal D and PCM terminal 2AT
•  APP sensor No.2 malfunction
•  PCM malfunction

Diagnostic Procedure

Step

Inspection

Results

Action
1
RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION
Note
•  Recording can be facilitated using the screen capture function of the PC.
•  Record the freeze frame data/snap shot data.
—
Go to the next step.
2
INSPECT APP SENSOR CONNECTOR CONDITION
•  Switch the ignition OFF.
•  Disconnect the APP sensor connector.
•  Inspect the connector engagement and connection condition, and inspect the terminals for damage, deformation, corrosion, or disconnection.
•  Is the connector normal?
Yes
Go to the next step.
No
Repair or replace the connector, then go to Step 8.
3
INSPECT APP SENSOR NO.2 CIRCUIT FOR SHORT TO GROUND
•  Verify that the APP sensor connector and the PCM connector are disconnected.
•  Inspect for continuity between the following terminals (vehicle wiring harness side) and ground.
―  APP sensor terminal F
―  APP sensor terminal E
•  Is there continuity?
Yes
Disconnect the PCM connector and inspect the wiring harness for short to ground.
If there is a short to ground in wiring harness:
•  Refer to the wiring diagram and verify if there is a common connector between the following terminals.
―  APP sensor terminal F and PCM terminal 2AR
―  APP sensor terminal E and PCM terminal 2AS
If there is a common connector:
•  Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short to ground to determine the malfunctioning location.
•  Repair or replace the malfunctioning location, then go to Step 8.
If there is no common connector:
•  Repair or replace the wiring harness which is shorted to ground, then go to Step 8.
If there is no short to ground in wiring harness:
•  Go to the next step.
No
Go to the next step.
4
INSPECT PCM CONNECTOR CONDITION
•  Disconnect the PCM connector.
•  Inspect the connector engagement and connection condition, and inspect the terminals for damage, deformation, corrosion, or disconnection.
•  Is the connector normal?
Yes
Go to the next step.
No
Repair or replace the connector, then go to Step 8.
5
INSPECT APP SENSOR NO.2 SIGNAL CIRCUIT AND GROUND CIRCUIT FOR SHORT CIRCUIT
•  Verify that the APP sensor connector and the PCM connector are disconnected.
•  Inspect for continuity between APP sensor terminals E and D (vehicle wiring harness side).
•  Is there continuity?
Yes
Refer to the wiring diagram and verify if there is a common connector between the following terminals.
•  APP sensor terminal E and PCM terminal 2AS
•  APP sensor terminal D and PCM terminal 2AT
If there is a common connector:
•  Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short circuit to determine the malfunctioning location.
•  Repair or replace the malfunctioning location.
If there is no common connector:
•  Repair or replace the malfunctioning wiring harness.
Go to Step 8.
No
Go to the next step.
6
INSPECT APP SENSOR NO.2 CIRCUIT FOR OPEN CIRCUIT
•  Verify that the APP sensor connector and the PCM connector are disconnected.
•  Inspect between the following terminals (vehicle wiring harness side) for continuity.
―  APP sensor terminal F and PCM terminal 2AR
―  APP sensor terminal E and PCM terminal 2AS
―  APP sensor terminal D and PCM terminal 2AT
•  Is there continuity?
Yes
Go to the next step.
No
Refer to the wiring diagram and verify if there is a common connector between the following terminals.
•  APP sensor terminal F and PCM terminal 2AR
•  APP sensor terminal E and PCM terminal 2AS
•  APP sensor terminal D and PCM terminal 2AT
If there is a common connector:
•  Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for an open circuit to determine the malfunctioning location.
•  Repair or replace the malfunctioning location.
If there is no common connector:
•  Repair or replace the wiring harness which has an open circuit.
Go to Step 8.
7
INSPECT APP SENSOR NO.2
•  Reconnect all the disconnected connectors.
•  Inspect APP sensor No.2.
•  Is APP sensor No.2 normal?
Yes
Go to the next step.
No
Replace the accelerator pedal, then go to the next step.
(See ACCELERATOR PEDAL POSITION (APP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
8
VERIFY THAT REPAIRS HAVE BEEN COMPLETED
•  Reconnect all the disconnected connectors.
•  Refer to the [MEMORY CLEARING PROCEDURE] and clear the DTC.
•  Perform the KOEO or KOER self-test.
•  Has DTC P2127:00 been recorded?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the PCM, then go to the next step.
No
Go to the next step.
9
VERIFY OTHER DTCs
•  Has any other DTC or pending code been stored?
Yes
Repair the malfunctioning location according to the applicable DTC troubleshooting.
(See DTC TABLE [PCM (SKYACTIV-D 2.2)].)
No
DTC troubleshooting completed.