DTC P2122:00 [PCM (SKYACTIV-D 2.2)]

id0102j5708300

DTC P2122:00

APP sensor No.1 circuit low input

DETECTION CONDITION

•  With the following conditions met, the output voltage of APP sensor No.1 is less than 0.25 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: P0642:00, P0643:00

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 A and PCM terminal 2AM

―  APP sensor terminal B and PCM terminal 2AN

•  PCM connector or terminal malfunction

•  Short circuit in APP sensor No.1 signal circuit and ground circuit

•  Open circuit in wiring harness between the following terminals:

―  APP sensor terminal A and PCM terminal 2AM

―  APP sensor terminal B and PCM terminal 2AN

―  APP sensor terminal C and PCM terminal 2AO

•  APP sensor No.1 malfunction

•  PCM malfunction

DTC P2122:00	APP sensor No.1 circuit low input
DETECTION CONDITION	• With the following conditions met, the output voltage of APP sensor No.1 is less than 0.25 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: P0642:00, P0643:00 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 A and PCM terminal 2AM ― APP sensor terminal B and PCM terminal 2AN • PCM connector or terminal malfunction • Short circuit in APP sensor No.1 signal circuit and ground circuit • Open circuit in wiring harness between the following terminals: ― APP sensor terminal A and PCM terminal 2AM ― APP sensor terminal B and PCM terminal 2AN ― APP sensor terminal C and PCM terminal 2AO • APP sensor No.1 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.1 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 A

―  APP sensor terminal B

•  Is there continuity?

Yes

•  Refer to the wiring diagram and verify if there is a common connector between the following terminals.

―  APP sensor terminal A and PCM terminal 2AM

―  APP sensor terminal B and PCM terminal 2AN

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.

•  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.1 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 B and C (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 B and PCM terminal 2AN

•  APP sensor terminal C and PCM terminal 2AO

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.1 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 A and PCM terminal 2AM

―  APP sensor terminal B and PCM terminal 2AN

―  APP sensor terminal C and PCM terminal 2AO

•  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 A and PCM terminal 2AM

•  APP sensor terminal B and PCM terminal 2AN

•  APP sensor terminal C and PCM terminal 2AO

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.1

•  Reconnect all the disconnected connectors.

•  Inspect APP sensor No.1.
(See ACCELERATOR PEDAL POSITION (APP) SENSOR INSPECTION [SKYACTIV-D 2.2]

•  Is APP sensor No.1 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.
(See CLEARING DTC [PCM (SKYACTIV-D 2.2)])

•  Perform the KOEO or KOER self-test.
(See KOEO/KOER SELF TEST [PCM (SKYACTIV-D 2.2)])

•  Has DTC P2122:00 been recorded?

Yes

Repeat the inspection from Step 1.

•  If the malfunction recurs, replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION [SKYACTIV-D 2.2])

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.

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.
2		No	Repair or replace the connector, then go to Step 8.
3	INSPECT APP SENSOR NO.1 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 A ― APP sensor terminal B • Is there continuity?	Yes	• Refer to the wiring diagram and verify if there is a common connector between the following terminals. ― APP sensor terminal A and PCM terminal 2AM ― APP sensor terminal B and PCM terminal 2AN 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. • Go to the next step.
3		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.
4		No	Repair or replace the connector, then go to Step 8.
5	INSPECT APP SENSOR NO.1 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 B and C (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 B and PCM terminal 2AN • APP sensor terminal C and PCM terminal 2AO 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.
5		No	Go to the next step.
6	INSPECT APP SENSOR NO.1 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 A and PCM terminal 2AM ― APP sensor terminal B and PCM terminal 2AN ― APP sensor terminal C and PCM terminal 2AO • Is there continuity?	Yes	Go to the next step.
6		No	Refer to the wiring diagram and verify if there is a common connector between the following terminals. • APP sensor terminal A and PCM terminal 2AM • APP sensor terminal B and PCM terminal 2AN • APP sensor terminal C and PCM terminal 2AO 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.1 • Reconnect all the disconnected connectors. • Inspect APP sensor No.1. (See ACCELERATOR PEDAL POSITION (APP) SENSOR INSPECTION [SKYACTIV-D 2.2] • Is APP sensor No.1 normal?	Yes	Go to the next step.
7		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. (See CLEARING DTC [PCM (SKYACTIV-D 2.2)]) • Perform the KOEO or KOER self-test. (See KOEO/KOER SELF TEST [PCM (SKYACTIV-D 2.2)]) • Has DTC P2122:00 been recorded?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [SKYACTIV-D 2.2])
8		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)])
9		No	DTC troubleshooting completed.