DTC P0123:00 [PCM (SKYACTIV-D 2.2)]

id0102j5701900

DTC P0123:00

Intake shutter valve position sensor circuit high input

DETECTION CONDITION

•  With the following conditions met, the output voltage of the intake shutter valve position sensor exceeds 4.81 V for a continuous 2 s.

―  Battery 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

•  Limits engine torque.

•  Inhibits the automatic diesel particulate filter regeneration control.

•  Inhibits the intake shutter valve control.

•  Inhibits the manual diesel particulate filter regeneration control.

•  Inhibits the EGR control.

•  Inhibits engine-stop by i-stop control.

POSSIBLE CAUSE

•  Intake shutter valve connector or terminal malfunction

•  PCM connector or terminal malfunction

•  Short to power supply in wiring harness between intake shutter valve terminal F and PCM terminal 1BA

•  Short circuit in intake shutter valve position sensor power supply circuit and signal circuit

•  Open circuit in wiring harness between intake shutter valve terminal C and PCM terminal 1AY

•  Intake shutter valve position sensor malfunction

•  PCM malfunction

DTC P0123:00	Intake shutter valve position sensor circuit high input
DETECTION CONDITION	• With the following conditions met, the output voltage of the intake shutter valve position sensor exceeds 4.81 V for a continuous 2 s. ― Battery 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	• Limits engine torque. • Inhibits the automatic diesel particulate filter regeneration control. • Inhibits the intake shutter valve control. • Inhibits the manual diesel particulate filter regeneration control. • Inhibits the EGR control. • Inhibits engine-stop by i-stop control.
POSSIBLE CAUSE	• Intake shutter valve connector or terminal malfunction • PCM connector or terminal malfunction • Short to power supply in wiring harness between intake shutter valve terminal F and PCM terminal 1BA • Short circuit in intake shutter valve position sensor power supply circuit and signal circuit • Open circuit in wiring harness between intake shutter valve terminal C and PCM terminal 1AY • Intake shutter valve position sensor 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 INTAKE SHUTTER VALVE CONNECTOR CONDITION

•  Switch the ignition OFF.

•  Disconnect the intake shutter valve 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 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.

4

INSPECT INTAKE SHUTTER VALVE POSITION SENSOR SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY

•  Verify that the intake shutter valve connector and the PCM connector are disconnected.

•  Switch the ignition ON (engine off).

Note

•  Another DTC may be stored by the PCM detecting an open circuit.

•  Measure the voltage at intake shutter valve terminal F (vehicle wiring harness side).

•  Is the voltage 0 V?

Yes

Go to the next step.

No

Refer to the wiring diagram and verify if there is a common connector between intake shutter valve terminal F and PCM terminal 1BA.

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 power supply to determine the malfunctioning location.

•  Repair or replace the malfunctioning location.

If there is no common connector:

•  Repair or replace the wiring harness which is shorted to the power supply.

Go to Step 8.

5

INSPECT INTAKE SHUTTER VALVE POSITION SENSOR POWER SUPPLY CIRCUIT AND SIGNAL CIRCUIT FOR SHORT CIRCUIT

•  Verify that the intake shutter valve connector and the PCM connector are disconnected.

•  Switch the ignition OFF.

•  Inspect for continuity between intake shutter valve terminals E and F (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.

•  Intake shutter valve terminal E and PCM terminal 1AZ

•  Intake shutter valve terminal F and PCM terminal 1BA

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 INTAKE SHUTTER VALVE POSITION SENSOR CIRCUIT FOR OPEN CIRCUIT

•  Verify that the intake shutter valve connector and the PCM connector are disconnected.

•  Inspect the wiring harness for continuity between intake shutter valve terminal C (vehicle wiring harness side) and PCM terminal 1AY (vehicle wiring harness side).

•  Is there continuity?

Yes

Go to the next step.

No

Refer to the wiring diagram and verify if there is a common connector between intake shutter valve terminal C and PCM terminal 1AY.

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 INTAKE SHUTTER VALVE POSITION SENSOR

•  Reconnect all the disconnected connectors.

•  Inspect the intake shutter valve position sensor.
(See INTAKE SHUTTER VALVE POSITION SENSOR INSPECTION [SKYACTIV-D 2.2])

•  Is the intake shutter valve position sensor normal?

Yes

Go to the next step.

No

Replace the intake shutter valve, then go to the next step.

(See INTAKE SHUTTER VALVE POSITION 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 P0123:00 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 INTAKE SHUTTER VALVE CONNECTOR CONDITION • Switch the ignition OFF. • Disconnect the intake shutter valve 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 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.
3		No	Repair or replace the connector, then go to Step 8.
4	INSPECT INTAKE SHUTTER VALVE POSITION SENSOR SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY • Verify that the intake shutter valve connector and the PCM connector are disconnected. • Switch the ignition ON (engine off). Note • Another DTC may be stored by the PCM detecting an open circuit. • Measure the voltage at intake shutter valve terminal F (vehicle wiring harness side). • Is the voltage 0 V?	Yes	Go to the next step.
4		No	Refer to the wiring diagram and verify if there is a common connector between intake shutter valve terminal F and PCM terminal 1BA. 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 power supply to determine the malfunctioning location. • Repair or replace the malfunctioning location. If there is no common connector: • Repair or replace the wiring harness which is shorted to the power supply. Go to Step 8.
5	INSPECT INTAKE SHUTTER VALVE POSITION SENSOR POWER SUPPLY CIRCUIT AND SIGNAL CIRCUIT FOR SHORT CIRCUIT • Verify that the intake shutter valve connector and the PCM connector are disconnected. • Switch the ignition OFF. • Inspect for continuity between intake shutter valve terminals E and F (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. • Intake shutter valve terminal E and PCM terminal 1AZ • Intake shutter valve terminal F and PCM terminal 1BA 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 INTAKE SHUTTER VALVE POSITION SENSOR CIRCUIT FOR OPEN CIRCUIT • Verify that the intake shutter valve connector and the PCM connector are disconnected. • Inspect the wiring harness for continuity between intake shutter valve terminal C (vehicle wiring harness side) and PCM terminal 1AY (vehicle wiring harness side). • 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 intake shutter valve terminal C and PCM terminal 1AY. 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 INTAKE SHUTTER VALVE POSITION SENSOR • Reconnect all the disconnected connectors. • Inspect the intake shutter valve position sensor. (See INTAKE SHUTTER VALVE POSITION SENSOR INSPECTION [SKYACTIV-D 2.2]) • Is the intake shutter valve position sensor normal?	Yes	Go to the next step.
7		No	Replace the intake shutter valve, then go to the next step. (See INTAKE SHUTTER VALVE POSITION 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 P0123:00 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.