Qashqai J11. Engine control system (R9M) - part 15

 

  Index      Nissan     Qashqai J11. Engine control system (R9M). Service and Repair Manual

 

Search            copyright infringement  

 

 

 

 

 

 

 

 

Content      ..     13      14      15      16     ..

 

 

Qashqai J11. Engine control system (R9M) - part 15

 

 

EC9-226

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

P025B FUEL PUMP CONTROL MODULE CONTROL

Is the inspection result normal?

YES

>> Replace FPCM. Refer to 

EC9-410, "Removal and Installation"

.

NO

>> Repair or replace error-detected parts.

+

Continuity

ECM

FPCM

Connector

Terminal

Connector

Terminal

E58

13

B77

9

Existed

P0335 CKP SENSOR

EC9-227

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

C

D

E

F

G

H

I

J

K

L

M

A

EC9

N

P

O

P0335 CKP SENSOR

DTC Logic

INFOID:0000000010309152

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DIAGNOSIS PROCEDURE

NOTE:
DTC P0335 can not duplicate.

>> Proceed to 

EC9-227, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000010309153

1.

CHECK ECM HARNESS CONNECTOR CONNECTIONS

1.

Turn ignition switch OFF.

2.

Check ECM harness connector connection.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace error-detected parts.

2.

CHECK CKP SENSOR HARNESS CONNECTOR CONNECTIONS

Check crankshaft position (CKP) sensor harness connector connection.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace error-detected parts.

3.

CHECK CKP SENSOR 

Refer to 

EC9-227, "Component Inspection (Crankshaft Position Sensor)"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace error-detected parts.

4.

CHECK GEAR TOOTH

Visually check for chipping flywheel gear tooth.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

NO

>> Replace signal plate.

Component Inspection (Crankshaft Position Sensor)

INFOID:0000000010309154

1.

CHECK CRANKSHAFT POSITION (CKP) SENSOR

1.

Disconnect CKP sensor harness connector.

2.

Check resistance between CKP sensor terminals as follows.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P0335

ENGINE SPEED SENSOR 
SIGNAL
(Crankshaft position sensor 
“A” circuit)
• 1.DEF: NO SIGNAL
• 2.DEF: IMPLAUSIBLE 

SIGNAL

• Crankshaft position sensor signal is not de-

tected by ECM when engine is running.

• Crankshaft position sensor signal is not in 

the normal pattern when engine is running.

• Harness or connectors

(The sensor circuit is open or shorted.)

• Crankshaft position sensor
• Signal plate

EC9-228

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

P0335 CKP SENSOR

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace CKP sensor.

CKP sensor

Resistance

+

-

Terminal

1

2

0.52 - 0.86 k

P0340 CMP SENSOR

EC9-229

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

C

D

E

F

G

H

I

J

K

L

M

A

EC9

N

P

O

P0340 CMP SENSOR

DTC Logic

INFOID:0000000010309155

DTC DETECTION LOGIC

NOTE:
If DTC P0340 is displayed with DTC P0016, P0335, P0560, P0641, P0651, and P0657, perform the trou-
ble diagnosis for DTC P0016, P0335, P0560, P0641, P0651, and P0657. Refer to 

EC9-108, "DTC Index"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DIAGNOSIS PROCEDURE

NOTE:
DTC P0340 can not duplicate.

>> Proceed to 

EC9-229, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000010309156

1.

CHECK CMP SENSOR-1

Visually check camshaft position (CMP) sensor for chipping.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace error-detected parts.

2.

CHECK CMP SENSOR HARNESS CONNECTOR CONNECTIONS

Check CMP sensor harness connector connection.
Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace error-detected parts.

3.

CHECK CMP SENSOR CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Check CMP sensor circuit for open and short.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace error-detected parts.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P0340

CAMSHAFT SENSOR CIR-
CUIT
(Camshaft position sensor 
“A” circuit bank 1 or single 
sensor)
• 1.DEF: IMPLAUSIBLE 

SIGNAL

• 2.DEF: NO SIGNAL

• Camshaft position sensor signal is not de-

tected by ECM when engine is running.

• Camshaft position sensor signal is not in the 

normal pattern when engine is running.

• Harness or connectors

(The sensor circuit is open or shorted.)

• Camshaft position sensor
• Signal plate

+

-

Continuity

ECM

CMP sensor

Connector

Terminal

Connector

Terminal

F82

55

F118

1

Existed

70

2

71

3

EC9-230

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

P0340 CMP SENSOR

4.

CHECK CMP SENSOR-2

Refer to 

EC9-230, "Component Inspection (Camshaft Position Sensor)"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

NO

>> Replace error-detected parts.

Component Inspection (Camshaft Position Sensor)

INFOID:0000000010309157

1.

CHECK CAMSHAFT POSITION (CMP) SENSOR

1.

Disconnect CMP sensor harness connector.

2.

Check the resistance between CMP sensor terminals as follows.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace CMP sensor.

CMP sensor

Resistance

+

-

Terminal

1

2

More than 100 k

P0380 GLOW CONTROL SYSTEM

EC9-231

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

C

D

E

F

G

H

I

J

K

L

M

A

EC9

N

P

O

P0380 GLOW CONTROL SYSTEM

DTC Logic

INFOID:0000000010309158

DTC DETECTION LOGIC

NOTE:
If DTC P0380 is displayed with DTC P0560 and P0657, perform the trouble diagnosis for DTC P0560
and P0657. Refer to 

EC9-108, "DTC Index"

.

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 4 minutes before conducting the next test.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON and wait at least 2 seconds.

2.

Check DTC.

Is DTC detected?

YES

>> Proceed to 

EC9-231, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010309159

1.

CHECK GLOW CONTROL UNIT POWER SUPPLY CIRCUIT

1.

Turn ignition switch ON.

2.

Check the power supply of the glow control unit.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Perform trouble diagnosis for power supply circuit.

DTC No.

CONSULT screen terms

(Trouble diagnosis con-

tent)

DTC detecting condition

Possible cause

P0380

PREHEATING UNIT 
DIAG CONN
(Glow plug/heater circuit 
“A”)
• 1.DEF: FAULT ALERT-

ED VIA THE CON-
TROL UNIT

• 2.DEF: OPERATION 

TEMPERATURE TOO 
HIGH

• CC.0: SHORT CIR-

CUIT TO EARTH

• CC.1: SHORT-CIR-

CUIT TO +12V

• CO: OPEN CIRCUIT

• ECM detects glow plug control unit er-

ror.

• ECM detects glow plug control circuit is 

open for 1 second or more.

• ECM detects glow plug circuit is short 

to ground for 1 second or more.

• ECM detects glow plug circuit is short 

to power for 1 second or more.

• ECM detects an over temperature on 

the glow plug control unit for 1 second 
or more.

• Harness or connectors

(Glow plug control circuit is open or shorted.)
(Glow control unit input signal circuit is open or 
shorted.)

• Glow  plug
• Glow control unit

+

-

Voltage

Glow control unit

Connector

Terminal

F115

6

Ground

Battery voltage

10

EC9-232

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

P0380 GLOW CONTROL SYSTEM

2.

CHECK GLOW CONTROL UNIT CIRCUIT FOR OPEN AND SHORT-1

1.

Turn ignition switch OFF.

2.

Check the continuity between glow control unit harness connector and ECM harness connector.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace error-detected parts.

3.

CHECK GLOW CONTROL UNIT CIRCUIT FOR OPEN AND SHORT-2

Check the continuity between glow control unit harness connector and glow plug harness connector.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace error-detected parts.

4.

CHECK GLOW PLUG 

Refer to 

EC9-232, "Component Inspection (Glow Plug)"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace error-detected parts.

5.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-41, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace glow control unit.

NO

>> Repair or replace.

Component Inspection (Glow Plug)

INFOID:0000000010309160

1.

CHECK GLOW PLUG

1.

Disconnect glow plug harness connector.

2.

Check resistance between glow plug terminals as follows.

Is the inspection result normal?

YES

>> INSPECTION END

+

-

Continuity

ECM

Glow control unit

Connector

Terminal

Connector

Terminal

F82

35

F115

11

Existed

67

9

+

-

Continuity

Glow control unit

Glow plug

Connector

Terminal

Connector

Terminal

F115

1

F125

1

Existed

2

F126

1

3

F127

1

4

F128

1

+

-

Resistance

Glow plug

Terminal

1

Ground

0.2 - 0.8 

 [at 20

°

C (68

°

F)]

P0380 GLOW CONTROL SYSTEM

EC9-233

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

C

D

E

F

G

H

I

J

K

L

M

A

EC9

N

P

O

NO

>> Replace malfunctioning glow plug.

EC9-234

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

P0402 EGR VOLUME CONTROL VALVE

P0402 EGR VOLUME CONTROL VALVE

DTC Logic

INFOID:0000000010309161

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 1 minute before conducting the next test.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start engine.

2.

Maintain the following conditions for at least 10 consecutive seconds. Hold the steady as possible.

3.

Check DTC.

Is DTC detected?

YES

>> Proceed to 

EC9-234, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010309162

1.

CHECK HIGH PRESSURE EGR VOLUME CONTROL VALVE

Visually check high pressure EGR volume control valve for chipping.
Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace error-detected parts.

2.

CHECK ECM HARNESS CONNECTOR CONNECTIONS

Check ECM harness connector connection.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace error-detected parts.

3.

CHECK HIGH PRESSURE EGR VOLUME CONTROL VALVE HARNESS CONNECTOR CONNECTIONS

Check high pressure EGR volume control valve harness connector connection.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace error-detected parts.

4.

CHECK HIGH PRESSURE EGR VOLUME CONTROL VALVE CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

DTC No.

CONSULT screen terms

(Trouble diagnosis con-

tent)

DTC detecting condition

Possible cause

P0402

EGR VALVE JAMMED 
OPEN
(Exhaust gas recircula-
tion “A” flow excessive 
detected)
• 1.DEF: MECHANICAL 

FAULT

ECM detects an incorrect closed position of high 
Pressure EGR volume control valve.

• Harness or connectors
• High Pressure EGR volume control 

valve

ENGINE SPEED

3,500 rpm

P0402 EGR VOLUME CONTROL VALVE

EC9-235

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

C

D

E

F

G

H

I

J

K

L

M

A

EC9

N

P

O

2.

Check high pressure EGR volume control valve circuit for open and short.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace error-detected parts.

5.

DTC CONFIRMATION PROCEDURE

1.

Erase DTC.

2.

Perform DTC confirmation procedure again. Refer to 

EC9-234, "DTC Logic"

.

Is the DTC P0402 displayed again?

YES

>> GO TO 6.

NO

>> Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

6.

CHECK HIGH PRESSURE EGR VOLUME CONTROL VALVE MOTOR

Refer to 

EC9-235, "Component Inspection (High Pressure EGR Volume Control Valve Motor)"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

NO

>> Replace error-detected parts. 

Component Inspection (High Pressure EGR Volume Control Valve Motor)

INFOID:0000000010309163

1.

CHECK HIGH PRESSURE EGR VOLUME CONTROL VALVE MOTOR

1.

Turn ignition switch OFF.

2.

Disconnect high pressure EGR volume control valve harness connector.

3.

Check resistance between high pressure EGR volume control valve terminals as follows.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace high pressure EGR volume control valve.

+

-

Continuity

ECM

High pressure EGR volume 

control valve

Connector

Terminal

Connector

Terminal

F83

144

F14

1

Existed

148

2

High pressure EGR volume 

control valve

Resistance (Approx.)

+

-

Terminal

1

2

2.35 

EC9-236

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

P0403 EGR VOLUME CONTROL VALVE

P0403 EGR VOLUME CONTROL VALVE

DTC Logic

INFOID:0000000010309164

DTC DETECTION LOGIC

NOTE:
If DTC P0380 is displayed with DTC P0641, first perform the trouble diagnosis for DTC P0641 Refer to

EC9-108, "DTC Index"

.

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 1 minute before conducting the next test.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON and wait at least 1 second.

2.

Check DTC.

Is DTC detected?

YES

>> Proceed to 

EC9-236, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010502693

1.

CHECK HIGH PRESSURE EGR VOLUME CONTROL VALVE

Visually check high pressure EGR volume control valve for chipping.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace error-detected parts.

2.

CHECK ECM HARNESS CONNECTOR CONNECTIONS

Check ECM harness connector connection.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace error-detected parts.

3.

CHECK HIGH PRESSURE EGR VOLUME CONTROL VALVE HARNESS CONNECTOR CONNECTIONS

Check high pressure EGR volume control valve harness connector connection.
Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace error-detected parts.

4.

CHECK HIGH PRESSURE EGR VOLUME CONTROL VALVE CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Check high pressure EGR volume control valve circuit for open and short.

DTC No.

CONSULT screen terms

(Trouble diagnosis con-

tent)

DTC detecting condition

Possible cause

P0403

EGR VLV CMD CIRC
(Exhaust gas recircula-
tion “A” control circuit)
• 1.DEF: —
• 2.DEF: OPERATION 

TEMPERATURE TOO 
HIGH

• ECM detects high Pressure EGR volume control 

valve command circuit is short to ground.

• ECM detects high Pressure EGR volume control 

valve command circuit is short to power.

• ECM detects an over temperature of high Pressure 

EGR volume control valve.

• Harness or connectors

(High Pressure EGR volume control 
valve command circuit is open or 
shorted.)

• High Pressure EGR volume control 

valve

P0403 EGR VOLUME CONTROL VALVE

EC9-237

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

C

D

E

F

G

H

I

J

K

L

M

A

EC9

N

P

O

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace error-detected parts.

5.

DTC CONFIRMATION PROCEDURE

1.

Erase DTC.

2.

Perform DTC confirmation procedure again. Refer to 

EC9-236, "DTC Logic"

.

Is the DTC P0403 displayed again?

YES

>> GO TO 6.

NO

>> Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

6.

CHECK HIGH PRESSURE EGR VOLUME CONTROL VALVE MOTOR

Refer to 

EC9-237, "Component Inspection (High Pressure EGR Volume Control Valve Motor)"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

NO

>> Replace error-detected parts. 

Component Inspection (High Pressure EGR Volume Control Valve Motor)

INFOID:0000000010309166

1.

CHECK HIGH PRESSURE EGR VOLUME CONTROL VALVE MOTOR

1.

Turn ignition switch OFF.

2.

Disconnect high pressure EGR volume control valve harness connector.

3.

Check resistance between high pressure EGR volume control valve terminals as follows.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace high pressure EGR volume control valve.

+

-

Continuity

ECM

High pressure EGR volume 

control valve

Connector

Terminal

Connector

Terminal

F83

144

F14

1

Existed

148

2

High pressure EGR volume 

control valve

Resistance (Approx.)

+

-

Terminal

1

2

2.35 

EC9-238

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

P0409 EGR VOLUME CONTROL VALVE POSITION SENSOR

P0409 EGR VOLUME CONTROL VALVE POSITION SENSOR

DTC Logic

INFOID:0000000010309167

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 1 minute before conducting the next test.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON and wait at least 1 second.

2.

Check DTC.

Is DTC detected?

YES

>> Proceed to 

EC9-238, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010309168

1.

CHECK HIGH PRESSURE EGR VOLUME CONTROL VALVE

Visually check high pressure EGR volume control valve for chipping.
Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace error-detected parts.

2.

CHECK ECM HARNESS CONNECTOR CONNECTIONS

Check ECM harness connector connection.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace error-detected parts.

3.

CHECK HIGH PRESSURE EGR VOLUME CONTROL VALVE HARNESS CONNECTOR CONNECTIONS

Check high pressure EGR volume control valve harness connector connection.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace error-detected parts.

4.

CHECK HIGH PRESSURE EGR VOLUME CONTROL VALVE POSITION SENSOR CIRCUIT FOR OPEN

AND SHORT

1.

Turn ignition switch OFF.

2.

Check high pressure EGR volume control valve position sensor circuit for open and short.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P0409

EGR VALVE POSITION SEN CIRC
(Exhaust gas recirculation sensor 
“A” circuit)
• 1.DEF: SIGNAL INCOHERENCE

• A Voltage of high Pressure EGR 

volume control valve position sen-
sor remains more than 4.5 V.

• A Voltage of high Pressure EGR 

volume control valve position sen-
sor remains less than 0.5 V.

• Harness or connectors

(High pressure EGR volume control valve 
control position sensor circuit is open or 
shorted.)

• High pressure EGR volume control valve 

control position sensor

P0409 EGR VOLUME CONTROL VALVE POSITION SENSOR

EC9-239

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

C

D

E

F

G

H

I

J

K

L

M

A

EC9

N

P

O

Is the inspection result normal?

YES

>> Replace High pressure EGR volume control valve.

NO

>> Repair or replace error-detected parts.

+

-

Continuity

ECM

High pressure EGR volume 

control valve

Connector

Terminal

Connector

Terminal

F83

106

F14

6

Existed

108

4

110

5

EC9-240

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

P0470 EXHAUST GAS PRESSURE SENSOR

P0470 EXHAUST GAS PRESSURE SENSOR

DTC Logic

INFOID:0000000010309172

DTC DETECTION LOGIC

NOTE:
If DTC P0470 is displayed with DTC P0651, and P2263, perform the trouble diagnosis for DTC P0651,
and P2263. Refer to 

EC9-108, "DTC Index"

.

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 1 minute before conducting the next test.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON and wait at least 5 second.

2.

Check DTC.

Is DTC detected?

YES

>> Proceed to 

EC9-240, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010309173

1.

CHECK ECM HARNESS CONNECTOR CONNECTIONS

1.

Turn ignition switch OFF.

2.

Check ECM harness connector connection.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace error-detected parts.

2.

CHECK EXHAUST GAS PRESSURE SENSOR HARNESS CONNECTOR CONNECTIONS

Check exhaust gas pressure sensor harness connector connection.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace error-detected parts.

3.

CHECK EXHAUST GAS PRESSURE SENSOR POWER SUPPLY CIRCUIT

Check the power supply of the exhaust gas pressure sensor.

Is the inspection result normal?

YES

>> GO TO 4.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P0470

TBN UPSTR PRS SEN CIRC
(Exhaust pressure sensor “A” 
circuit)
• 1.DEF: VOLTAGE TOO LOW
• 2.DEF: VOLTAGE TOO HIGH

• An excessively low voltage from the sensor 

is sent to ECM.

• An excessively high voltage from the sensor 

is sent to ECM.

Exhaust gas pressure sensor

+

-

Voltage

(Approx.)

Exhaust gas pressure sensor

Connector

Terminal

F135

3

Ground

5 V

P0470 EXHAUST GAS PRESSURE SENSOR

EC9-241

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

C

D

E

F

G

H

I

J

K

L

M

A

EC9

N

P

O

NO

>> Perform trouble diagnosis for power supply circuit.

4.

CHECK EXHAUST GAS PRESSURE SENSOR CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Check exhaust gas pressure sensor circuit for open and short.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace error-detected parts.

5.

CHECK EXHAUST GAS PRESSURE SENSOR

Refer to 

EC9-241, "Component Inspection (Exhaust Gas Pressure Sensor)"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Replace error-detected parts.

6.

DTC CONFIRMATION PROCEDURES

1.

Erase DTC.

2.

Perform DTC confirmation procedure again. Refer to 

EC9-240, "DTC Logic"

.

Is the DTC P0470 displayed again?

YES

>> GO TO 7.

NO

>> Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

7.

CHECK TURBOCHARGER

Check turbocharger.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

NO

>> Repair or replace malfunctioning parts.

Component Inspection (Exhaust Gas Pressure Sensor)

INFOID:0000000010309174

1.

CHECK EXHAUST GAS PRESSURE SENSOR

1.

Disconnect exhaust gas pressure sensor harness connector.

2.

Check the resistance between exhaust gas pressure sensor terminals as follows.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace exhaust gas pressure sensor.

+

-

Continuity

ECM

Exhaust gas pressure sen-

sor

Connector

Terminal

Connector

Terminal

F83

104

F135

3

Existed

126

1

138

2

Exhaust gas pressure sensor

Resistance (Approx.)

+

-

Terminal

2

1

100 k

 

 

 

 

 

 

 

Content      ..     13      14      15      16     ..