RM3660EC _51 Engine / Hybrid System _080777 NR Series ENGINE CONTROL _0393969 SFI SYSTEM C

NR Series ENGINE CONTROL  SFI SYSTEM  P023511  Turbocharger/Supercharger Boost Sensor "A" Circuit Short to Ground  


DESCRIPTION

A435986E03
2.25,0.104 5.344,0.438 3.094,0.333 10 false Characteristics of No. 1 Turbo Pressure Sensor 1.729,0.438 2.667,0.75 0.938,0.313 10 false Voltage (V) 2.271,1.01 2.729,1.208 0.458,0.198 10 false 4.5 2.25,1.74 2.708,1.938 0.458,0.198 10 false 2.0 2.26,2.177 2.719,2.375 0.458,0.198 10 false 1.0 2.833,2.698 3.75,2.896 0.917,0.198 10 false 13.30 3.406,2.698 4.323,2.896 0.917,0.198 10 false 96.15 4.354,2.688 5.427,2.885 1.073,0.198 10 false 303.30 4.938,2.531 6.531,2.823 1.594,0.292 10 false kPa 2.844,3.156 3.458,3.354 0.615,0.198 10 false 1.93 3.417,3.167 4.188,3.365 0.771,0.198 10 false 13.94 4.448,3.156 5.219,3.354 0.771,0.198 10 false 43.98 4.927,2.99 6.458,3.26 1.531,0.271 10 false psi

The internal sensor in the No. 1 turbo pressure sensor detects the intercooler internal pressure as a voltage.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P023511 Turbocharger/Supercharger Boost Sensor "A" Circuit Short to Ground Diagnosis Condition:
·

Ignition switch ON


Abnormal condition:
·

The No. 1 turbo pressure sensor output voltage is less than 0.97 V.


Malfunction Time:
·

3 seconds or more


Trip logic:
·

1 trip detection logic


Detection Conditions:
·

Continuous


Sensors/components used for detection:
·

No. 1 turbo pressure sensor


·

Open or short in No. 1 turbo pressure sensor circuit

·

No. 1 turbo pressure sensor

·

ECM


Comes on DTC stored SAE Code: P0237

HINT:

When this DTC is output, check the No. 1 turbo pressure sensor in the Data List. Enter the following menus: Powertrain / Engine / Data List / Boost Pressure Sensor.

DTC No. Boost Pressure Sensor Malfunction
P023511 Less than 11 kPa (2 psi)
·

Short to ground in PTA circuit

·

Short in PTA to EPTA circuit

·

Open in VPTA circuit



If the Data List values is normal it may be due to a temporary recovery from the malfunction condition. Check for intermittent problems.

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>SFI SYSTEM>CHECK FOR INTERMITTENT PROBLEMS


MONITOR DESCRIPTION

When the ignition switch is turned to ON and the output voltage of the No. 1 turbo pressure sensor is less than 0.97 V for 3 seconds or more, the ECM determines that the No. 1 turbo pressure sensor circuit is malfunctioning and illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Required Sensors/Components No. 1 turbo pressure sensor
Frequency of Operation Continuous

CONFIRMATION DRIVING PATTERN

HINT:
·

After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>SFI SYSTEM>DTC CHECK / CLEAR

·

When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>SFI SYSTEM>DTC CHECK / CLEAR



1.

Connect the GTS to the DLC3.

2.

Turn the ignition switch to ON.

3.

Turn the GTS on.

4.

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

5.

Turn the ignition switch off and wait for at least 30 seconds.

6.

Start the engine and wait 5 seconds or more [A].

7.

Turn the GTS on.

8.

Enter the following menus: Powertrain / Engine / Trouble Codes [B].

9.

Read the pending DTCs.

HINT:
·

If a pending DTC is output, the system is malfunctioning.

·

If a pending DTC is not output, perform the following procedure.



10.

Enter the following menus: Powertrain / Engine / Utility / All Readiness.

11.

Proceed to the next screen and enter the DTC to be checked.

12.

Check the DTC judgment result.

GTS Display Description
NORMAL
·

DTC judgment completed

·

System normal


ABNORMAL
·

DTC judgment completed

·

System abnormal


INCOMPLETE
·

DTC judgment not completed

·

Perform driving pattern after confirming DTC enabling conditions



HINT:
·

If the judgment result shows NORMAL, the system is normal.

·

If the judgment result shows ABNORMAL, the system has a malfunction.

·

[A] to [B]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.

·

When clearing the permanent DTCs, do not disconnect the cable from the battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.




WIRING DIAGRAM

A415237E04
1.396,1.01 1.792,1.229 0.396,0.219 10 false VC 1.354,1.698 1.75,1.917 0.396,0.219 10 false PIM 1.417,2.479 1.813,2.698 0.396,0.219 10 false E2 0.344,2.875 0.948,3.115 0.604,0.24 10 false C23 0.344,3.042 2.188,3.365 1.844,0.323 10 false No. 1 Turbo Pressure Sensor 4.927,3.104 5.323,3.323 0.396,0.219 10 false C78 5.323,3.104 5.719,3.323 0.396,0.219 10 false ECM 4.615,0.906 5.125,1.104 0.51,0.198 10 false VPTA 4.604,2.375 5.094,2.594 0.49,0.219 10 false EPTA 4.25,0.906 4.646,1.125 0.396,0.219 10 false 140 5.625,0.677 6.021,0.896 0.396,0.219 10 false 5 V 4.26,1.604 4.656,1.823 0.396,0.219 10 false 108 4.26,2.365 4.656,2.583 0.396,0.219 10 false 139 1.719,0.896 2.115,1.115 0.396,0.219 10 false 3 1.719,1.573 2.115,1.792 0.396,0.219 10 false 1 1.708,2.365 2.104,2.583 0.396,0.219 10 false 2 4.604,1.604 5,1.823 0.396,0.219 10 false PTA 5.292,1.385 5.979,1.635 0.688,0.25 10 false 180 kΩ

CAUTION / NOTICE / HINT

HINT:

Read Freeze Frame Data using the GTS. The ECM records vehicle and driving condition information as Freeze Frame Data the moment a DTC is stored. When troubleshooting, Freeze Frame Data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.


PROCEDURE

1.READ VALUE USING GTS (BOOST PRESSURE SENSOR)
HINT:

Make sure that the connector is properly connected. If it is not, securely connect it and check for DTCs again.


a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Enter the following menus: Powertrain / Engine / Data List / Boost Pressure Sensor.

Powertrain > Engine > Data List
Tester Display
Boost Pressure Sensor
50003 372 269

e.

Record the Boost Pressure Sensor value.


f.

Turn the ignition switch off.


g.

Turn the GTS off.


h.

Disconnect the No. 1 turbo pressure sensor connector.


i.

Turn the ignition switch to ON.


j.

Turn the GTS on.


k.

Enter the following menus: Powertrain / Engine / Data List / Boost Pressure Sensor.

Powertrain > Engine > Data List
Tester Display
Boost Pressure Sensor
50003 372 269

l.

Compare the Data List value when the connector is connected and when the connector is not connected.

Result:
Result Proceed to
The value of Boost Pressure Sensor changes A
The value of Boost Pressure Sensor does not change B




A

2.CHECK TERMINAL VOLTAGE (NO. 1 TURBO PRESSURE SENSOR)

B

4.CHECK TERMINAL VOLTAGE (NO. 1 TURBO PRESSURE SENSOR)
2.CHECK TERMINAL VOLTAGE (NO. 1 TURBO PRESSURE SENSOR)
A376494C64
0.208,1.01 0.563,1.208 0.354,0.198 2.198,1.833 1.865,1.167 true 0.115,0.094 0.427,0.292 0.313,0.198 10 false *a 0.25,1.021 0.708,1.219 0.458,0.198 10 false C23 2.146,1.844 2.458,2.042 0.313,0.198 10 false VC
*a Front view of wire harness connector
(to No. 1 Turbo Pressure Sensor)


a.

Disconnect the No. 1 turbo pressure sensor connector.


b.

Turn the ignition switch to ON.


c.

Measure the voltage according to the value(s) in the table below.

Standard Voltage:
Tester Connection Condition Specified Condition
C23-3 (VC) - Body ground Ignition switch ON 4.75 to 5.25 V



Result:
Proceed to
OK
NG



OK

REPLACE NO. 1 TURBO PRESSURE SENSOR

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>MANIFOLD ABSOLUTE PRESSURE SENSOR>REMOVAL


NG

3.CHECK HARNESS AND CONNECTOR (NO. 1 TURBO PRESSURE SENSOR - ECM)
3.CHECK HARNESS AND CONNECTOR (NO. 1 TURBO PRESSURE SENSOR - ECM)
a.

Disconnect the No. 1 turbo pressure sensor connector.


b.

Disconnect the ECM connector.


c.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
C23-3 (VC) - C78-140 (VPTA) Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

REPLACE ECM

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>ECM>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.CHECK TERMINAL VOLTAGE (NO. 1 TURBO PRESSURE SENSOR)
A376494C66
0.208,1.01 0.563,1.208 0.354,0.198 0.833,1.833 1.156,1.135 true 0.115,0.094 0.427,0.292 0.313,0.198 10 false *a 0.729,1.854 1.052,2.094 0.323,0.24 10 false PIM 0.25,1.021 0.708,1.219 0.458,0.198 10 false C23
*a Front view of wire harness connector
(to No. 1 Turbo Pressure Sensor)


a.

Disconnect the No. 1 turbo pressure sensor connector.


b.

Turn the ignition switch to ON.


c.

Measure the voltage according to the value(s) in the table below.

Standard Voltage:
Tester Connection Condition Specified Condition
C23-1 (PIM) - Body ground Ignition switch ON 3.0 to 5.25 V



Result:
Proceed to
OK
NG



OK

REPLACE ECM

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>ECM>REMOVAL


NG

5.CHECK HARNESS AND CONNECTOR (NO. 1 TURBO PRESSURE SENSOR - ECM)
5.CHECK HARNESS AND CONNECTOR (NO. 1 TURBO PRESSURE SENSOR - ECM)
a.

Disconnect the No. 1 turbo pressure sensor connector.


b.

Disconnect the ECM connector.


c.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
C23-1 (PIM) or C78-108 (PTA) - Body ground and other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE ECM

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>ECM>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR