DTC P0235:00 [PCM (SKYACTIV-D 2.2)]

DTC P0235:00	Small-type turbocharger area control system: Circuit malfunction
DETECTION CONDITION	• The PCM detects a condition 2 times in which the difference between the maximum intake air pressure when the following condition A is met and the minimum intake air pressure when the following condition B is met is less than 2.6 kPa. Condition A ― 0.032 s or more have elapsed with all of the following conditions met: • Battery positive voltage: 8 V or more • 0.5 s have elapsed after ignition is switched ON (engine off or on) • Engine coolant temperature: 30 °C {86 °F} or more • Intake air temperature: -10 °C {14 °F} or more • Barometric pressure: 65—120 kPa {0.66—129 kgf/cm², 9.4—17.4 psi} • Change in fuel injection amount: 4 mm³/st or less within 0.032 s • Vehicle speed: 15 km/h {9.3 mph} or more • Target intake air pressure is 200 kPa {2.04 kgf/cm², 29 psi} or more for 2 s or more • Difference in fuel injection amount before and after correction is 5 mm³/st or less • MAP sensor No.1: P0237:00 and P0238:00 are not detected Condition B ― 0.032 s or more have elapsed with all of the following conditions met: • Battery positive voltage: 8 V or more • 0.5 s have elapsed after ignition is switched ON (engine on) • Engine coolant temperature: 30 °C {86 °F} or more • Intake air temperature: -10 °C {14 °F} or more • Barometric pressure: 65—120 kPa {0.66—129 kgf/cm², 9.4—17.4 psi} • Change in fuel injection amount: 4 mm³/st or less within 0.032 s • When any of the following (I) or (II) conditions is met: (I) 1.5 s or more have elapsed with all of the following conditions met: ― Engine speed: 1,200 rpm or less ― Idle speed control: Being performed ― Fuel injection amount: 25 mm³/st or less ― Vehicle speed is 0 km/h {0 mph}or selector lever is in P or N position (II) 2 s or more have elapsed with all of the following conditions met: ― Engine speed: 100 rpm or less ― Vehicle speed is 0 km/h {0 mph} ― MAP sensor No.1: P0237:00 and P0238:00 are not detected 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 manual diesel particulate filter regeneration control. • Inhibits the boost control. • Inhibits the EGR control. • Stops the G-vectoring control (GVC). • Limits the engine transaxle total control.
POSSIBLE CAUSE	• MAP sensor No.1 connector or terminal malfunction • PCM connector or terminal malfunction • MAP sensor No.1 malfunction • PCM malfunction
SYSTEM WIRING DIAGRAM	Not applicable

DTC P0235:00

Small-type turbocharger area control system: Circuit malfunction

DETECTION CONDITION

• The PCM detects a condition 2 times in which the difference between the maximum intake air pressure when the following condition A is met and the minimum intake air pressure when the following condition B is met is less than 2.6 kPa.

Condition A

― 0.032 s or more have elapsed with all of the following conditions met:

• Battery positive voltage: 8 V or more

• 0.5 s have elapsed after ignition is switched ON (engine off or on)

• Engine coolant temperature: 30 °C {86 °F} or more

• Intake air temperature: -10 °C {14 °F} or more

• Barometric pressure: 65—120 kPa {0.66—129 kgf/cm², 9.4—17.4 psi}

• Change in fuel injection amount: 4 mm³/st or less within 0.032 s

• Vehicle speed: 15 km/h {9.3 mph} or more

• Target intake air pressure is 200 kPa {2.04 kgf/cm², 29 psi} or more for 2 s or more

• Difference in fuel injection amount before and after correction is 5 mm³/st or less

• MAP sensor No.1: P0237:00 and P0238:00 are not detected

Condition B

― 0.032 s or more have elapsed with all of the following conditions met:

• Battery positive voltage: 8 V or more

• 0.5 s have elapsed after ignition is switched ON (engine on)

• Engine coolant temperature: 30 °C {86 °F} or more

• Intake air temperature: -10 °C {14 °F} or more

• Barometric pressure: 65—120 kPa {0.66—129 kgf/cm², 9.4—17.4 psi}

• Change in fuel injection amount: 4 mm³/st or less within 0.032 s

• When any of the following (I) or (II) conditions is met:

(I) 1.5 s or more have elapsed with all of the following conditions met:

― Engine speed: 1,200 rpm or less

― Idle speed control: Being performed

― Fuel injection amount: 25 mm³/st or less

― Vehicle speed is 0 km/h {0 mph}or selector lever is in P or N position

(II) 2 s or more have elapsed with all of the following conditions met:

― Engine speed: 100 rpm or less

― Vehicle speed is 0 km/h {0 mph}

― MAP sensor No.1: P0237:00 and P0238:00 are not detected

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 manual diesel particulate filter regeneration control.

• Inhibits the boost control.

• Inhibits the EGR control.

• Stops the G-vectoring control (GVC).

• Limits the engine transaxle total control.

POSSIBLE CAUSE

• MAP sensor No.1 connector or terminal malfunction

• PCM connector or terminal malfunction

• MAP sensor No.1 malfunction

• PCM malfunction

SYSTEM WIRING DIAGRAM

Not applicable

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 MAP SENSOR NO.1 CONNECTOR CONDITION • Switch the ignition OFF. • Disconnect the MAP sensor No.1 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 5.
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 5.
4	INSPECT MAP SENSOR NO.1 • Reconnect all the disconnected connectors. • Inspect MAP sensor No.1. (See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR INSPECTION [SKYACTIV-D 2.2].) • Is MAP sensor No.1 normal?	Yes	Go to the next step.
No	Replace MAP sensor No.1, then go to the next step. (See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
5	VERIFY THAT REPAIRS HAVE BEEN COMPLETED • 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 P0235:00 been recorded?	Yes	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
No	Go to the next step.
6	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)].) • Drive the vehicle on flat roads under the following conditions 4 times repeatedly. 1. After the engine is started, idle the engine for 5 s. 2. Accelerate to 40 km/h and drive the vehicle while maintaining the speed for 5 s. 3. Stop the vehicle. • Stop the engine. • Display the DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D 2.2)].) • Has DTC P0235:00 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.
7	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

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.

INSPECT MAP SENSOR NO.1 CONNECTOR CONDITION

• Switch the ignition OFF.

• Disconnect the MAP sensor No.1 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.

Repair or replace the connector, then go to Step 5.

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.

Repair or replace the connector, then go to Step 5.

INSPECT MAP SENSOR NO.1

• Reconnect all the disconnected connectors.

• Inspect MAP sensor No.1.

(See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR INSPECTION [SKYACTIV-D 2.2].)

• Is MAP sensor No.1 normal?

Yes

Go to the next step.

Replace MAP sensor No.1, then go to the next step.

(See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)

VERIFY THAT REPAIRS HAVE BEEN COMPLETED

• 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 P0235:00 been recorded?

Yes

Replace the PCM, then go to the next step.

(See PCM REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)

Go to the next step.

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)].)

• Drive the vehicle on flat roads under the following conditions 4 times repeatedly.

1. After the engine is started, idle the engine for 5 s.

2. Accelerate to 40 km/h and drive the vehicle while maintaining the speed for 5 s.

3. Stop the vehicle.

• Stop the engine.

• Display the DTCs using the M-MDS.

(See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D 2.2)].)

• Has DTC P0235:00 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].)

Go to the next step.

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)].)

DTC troubleshooting completed.