Juke F15 (2012 year). Service Repair Manual - part 171

 

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Juke F15 (2012 year). Service Repair Manual - part 171

 

 

P0470 EXHAUST GAS PRESSURE SENSOR 1

EC-945

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

2.

Also check harness for short to ground and short to power. 

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair open circuit or short to ground or short to power in harness or connectors.

5.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-42, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace exhaust gas pressure sensor 1.

NO

>> Repair or replace.

Exhaust gas pressure sensor 1

ECM

Continuity

Connector

Terminal

Connector

Terminal

F67

2

F58

42

Existed

EC-946

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

P0471 EXHAUST GAS PRESSURE SENSOR 1

P0471 EXHAUST GAS PRESSURE SENSOR 1

DTC Logic

INFOID:0000000006496632

DTC DETECTION LOGIC

NOTE:
If DTC P0471 is displayed with DTC P0470 or P2226, first perform trouble diagnosis for DTC P0470 or P2226.
Refer to 

EC-944, "DTC Logic"

 (P0470), 

EC-1002, "DTC Logic"

 (P2226).

Diagnosis Procedure

INFOID:0000000006496633

1.

CHECK GROUND CONNECTIONS

1.

Turn ignition switch OFF and wait at least 20 seconds.

2.

 Check ground connection E38. Refer to Ground inspection in 

GI-44, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CHECK EXHAUST GAS PRESSURE SENSOR 1 AND EXHAUST GAS PIPE INSTALLATION

Check exhaust gas pressure sensor and exhaust gas pipe for poor installation and damage.
Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Install exhaust gas pressure sensor and exhaust gas pipe properly.

3.

CHECK EXHAUST GAS PRESSURE SENSOR 1 POWER SUPPLY CIRCUIT

1.

Disconnect exhaust pressure sensor 1 harness connector.

2.

Turn ignition switch ON.

3.

Check the voltage between exhaust gas pressure sensor 1 harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair open circuit or short to ground or short to power in harness or connectors.

4.

CHECK EXHAUST GAS PRESSURE SENSOR 1 GROUND CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF and wait at least 20 seconds.

2.

Check the continuity between exhaust gas pressure sensor 1 harness connector and ECM harness con-
nector.

3.

Also check harness for short to ground and short to power. 

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair open circuit or short to ground or short to power in harness or connectors.

5.

CHECK EXHAUST PRESSURE SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

DTC No.

Trouble diagnosis name

Possible cause

P0471

Exhaust gas pressure sensor 1
• 1.DEF: Incorrect sensor mounting
• 2.DEF: Implausible signal

• Exhaust gas pressure sensor 1
• Exhaust gas pipe (Between Exhaust gas pressure sen-

sor 1 and Exhaust manifold)

Exhaust gas pressure sensor 1

Ground

Voltage

Connector

Terminal

F67

3

Ground

Approx. 5 V

Exhaust gas pressure sensor 1

ECM

Continuity

Connector

Terminal

Connector

Terminal

F67

1

F58

23

Existed

P0471 EXHAUST GAS PRESSURE SENSOR 1

EC-947

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

1.

Check the continuity between exhaust gas pressure sensor 1 harness connector and ECM harness con-
nector.

2.

Also check harness for short to ground and short to power. 

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair open circuit or short to ground or short to power in harness or connectors.

6.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-42, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace exhaust gas pressure sensor 1.

NO

>> Repair or replace.

Exhaust gas pressure sensor 1

ECM

Continuity

Connector

Terminal

Connector

Terminal

F67

2

F58

42

Existed

EC-948

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

P047A EXHAUST GAS PRESSURE SENSOR 2

P047A EXHAUST GAS PRESSURE SENSOR 2

DTC Logic

INFOID:0000000006496634

DTC DETECTION LOGIC

NOTE:
If DTC P047A is displayed with DTC P0651, first perform trouble diagnosis for DTC P0651. Refer to 

EC-975,

"DTC Logic"

.

Diagnosis Procedure

INFOID:0000000006496635

1.

CHECK GROUND CONNECTIONS

1.

Turn ignition switch OFF and wait at least 20 seconds.

2.

 Check ground connection E38. Refer to Ground inspection in 

GI-44, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CHECK EXHAUST GAS PRESSURE SENSOR 2 POWER SUPPLY CIRCUIT

1.

Disconnect exhaust gas pressure sensor 2 harness connector.

2.

Turn ignition switch ON.

3.

Check the voltage between exhaust pressure sensor 2 harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair open circuit or short to ground or short to power in harness or connectors.

3.

CHECK EXHAUST GAS PRESSURE SENSOR 2 GROUND CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF and wait at least 20 seconds.

2.

Check the continuity between exhaust gas pressure sensor 2 harness connector and ECM harness con-
nector.

3.

Also check harness for short to ground and short to power. 

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair open circuit or short to ground or short to power in harness or connectors.

4.

CHECK EXHAUST GAS PRESSURE SENSOR 2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

Check the continuity between exhaust gas pressure sensor 2 harness connector and ECM harness con-
nector.

DTC No.

Trouble diagnosis name

Possible cause

P047A

Exhaust gas pressure sensor 2 circuit
• 1.DEF: Signal outside lower limit
• 2.DEF: Signal outside upper limit

• Harness or connectors

(The exhaust gas pressure sensor 2 circuit is open or 
shorted.)

• Exhaust gas pressure sensor 2

Exhaust gas pressure sensor 2

Ground

Voltage

Connector

Terminal

F75

1

Ground

Approx. 5 V

Exhaust gas pressure sensor 2

ECM

Continuity

Connector

Terminal

Connector

Terminal

F75

2

F58

31

Existed

P047A EXHAUST GAS PRESSURE SENSOR 2

EC-949

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

2.

Also check harness for short to ground and short to power. 

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair open circuit or short to ground or short to power in harness or connectors.

5.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-42, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace exhaust gas pressure sensor 2.

NO

>> Repair or replace.

Exhaust gas pressure sensor 2

ECM

Continuity

Connector

Terminal

Connector

Terminal

F75

3

F58

53

Existed

EC-950

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

P047B EXHAUST GAS PRESSURE SENSOR 2

P047B EXHAUST GAS PRESSURE SENSOR 2

DTC Logic

INFOID:0000000006496636

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000006496637

1.

CHECK GROUND CONNECTIONS

1.

Turn ignition switch OFF and wait at least 20 seconds.

2.

 Check ground connection E38. Refer to Ground inspection in 

GI-44, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CHECK EXHAUST GAS PRESSURE SENSOR 2 POWER SUPPLY CIRCUIT

1.

Disconnect exhaust gas pressure sensor 2 harness connector.

2.

Turn ignition switch ON.

3.

Check the voltage between exhaust pressure sensor 2 harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair open circuit or short to ground or short to power in harness or connectors.

3.

CHECK EXHAUST GAS PRESSURE SENSOR 2 GROUND CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF and wait at least 20 seconds.

2.

Check the continuity between exhaust gas pressure sensor 2 harness connector and ECM harness con-
nector.

3.

Also check harness for short to ground and short to power. 

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair open circuit or short to ground or short to power in harness or connectors.

4.

CHECK EXHAUST GAS PRESSURE SENSOR 2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

Check the continuity between exhaust gas pressure sensor 2 harness connector and ECM harness con-
nector.

2.

Also check harness for short to ground and short to power. 

DTC No.

Trouble diagnosis name

Possible cause

P047B

Exhaust gas pressure sensor 2 circuit
• 1.DEF: Signal incoherence.
• 2.DEF: Signal detected outside upper or 

lower limit.

• Harness or connectors

(The exhaust gas pressure sensor 2 circuit is open or 
shorted.)

• Exhaust gas pressure sensor 2

Exhaust gas pressure sensor 2

Ground

Voltage

Connector

Terminal

F75

1

Ground

Approx. 5 V

Exhaust gas pressure sensor 2

ECM

Continuity

Connector

Terminal

Connector

Terminal

F75

2

F58

31

Existed

Exhaust gas pressure sensor 2

ECM

Continuity

Connector

Terminal

Connector

Terminal

F75

3

F58

53

Existed

P047B EXHAUST GAS PRESSURE SENSOR 2

EC-951

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair open circuit or short to ground or short to power in harness or connectors.

5.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-42, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace exhaust gas pressure sensor 2.

NO

>> Repair or replace.

EC-952

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

P0487 EGR VOLUME CONTROL VALVE

P0487 EGR VOLUME CONTROL VALVE

DTC Logic

INFOID:0000000006496638

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000006496639

1.

CHECK EGR VOLUME CONTROL VALVE CONTROL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect EGR volume control valve harness connector and ECM harness connector.

3.

Check the continuity between EGR volume control valve terminal harness connector and ECM harness
connector.

4.

Also check harness for short to ground and short to power.

OK or NG

OK

>> GO TO 2.

NG

>> Repair open circuit or short to ground or short to power in harness or connectors.

2.

CHECK EGR VOLUME CONTROL VALVE

Refer to 

EC-952, "Component Inspection"

.

OK or NG

OK 

>> GO TO 3.

NG

>> Replace EGR volume control valve. Refer to 

EC-881, "Work Procedure"

.

3.

CHECK EGR VOLUME CONTROL VALVE CONTROL POSITION SENSOR

Refer to 

EC-952, "Component Inspection"

.

OK or NG

OK 

>> GO TO 4.

NG

>> Replace EGR volume control valve. Refer to 

EC-881, "Work Procedure"

.

4.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-42, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000006496640

EGR VOLUME CONTROL VALVE

DTC No.

Trouble diagnosis name

Possible cause

P0487

EGR VOLUME CONTROL VALVE CIRCUIT

• Harness or connectors

(The EGR volume control valve circuit is open 
or shorted.)

• EGR  volume  control valve (DC motor)
• EGR volume control valve control position 

sensor

EGR volume control valve terminal

ECM

Continuity

Connector

Terminal

Connector

Terminal

F88

1

F58

32

Existed

2

14

3

59

5

38

6

13

P0487 EGR VOLUME CONTROL VALVE

EC-953

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

1.

Disconnect EGR volume control valve harness connector.

2.

Check resistance EGR volume control valve harness connector.

If NG, replace EGR volume control valve. Refer to 

EC-881, "Work Procedure"

.

EGR VOLUME CONTROL VALVE CONTROL POSITION SENSOR

1.

Disconnect EGR volume control valve harness connector.

2.

Check continuity EGR volume control valve harness connector.

If NG, replace EGR volume control valve. Refer to 

EC-881, "Work Procedure"

.

EGR volume control valve

Resistance

Connector

Terminal

Connector

Terminal

F88

2

F88

6

2.3 

Ω

 [at 25

°

C (77

°

F)]

EGR volume control valve

Continuity

Connector

Terminal

Connector

Terminal

F88

1

F88

3

Continuity should exist.

EC-954

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

P0488 EGR SYSTEM

P0488 EGR SYSTEM

DTC Logic

INFOID:0000000006496641

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000006496642

1.

CHECK EGR VOLUME CONTROL VALVE CONTROL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect EGR volume control valve harness connector and ECM harness connector.

3.

Check the continuity between EGR volume control valve terminal harness connector and ECM harness
connector.

4.

Also check harness for short to ground and short to power.

OK or NG

OK

>> GO TO 2.

NG

>> Repair open circuit or short to ground or short to power in harness or connectors.

2.

CHECK EGR VOLUME CONTROL VALVE

Refer to 

EC-954, "Component Inspection"

.

OK or NG

OK 

>> GO TO 3.

NG

>> Replace EGR volume control valve. Refer to 

EC-881, "Work Procedure"

.

3.

CHECK EGR VOLUME CONTROL VALVE CONTROL POSITION SENSOR

Refer to 

EC-954, "Component Inspection"

.

OK or NG

OK 

>> GO TO 4.

NG

>> Replace EGR volume control valve. Refer to 

EC-881, "Work Procedure"

.

4.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-42, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000006496643

EGR VOLUME CONTROL VALVE

DTC No.

Trouble diagnosis name

Possible cause

P0488

EGR VOLUME CONTROL
• 5.DEF: Valve locked
• 6.DEF: Valve locked

• Harness or connectors

(The EGR volume control valve circuit is open 
or shorted.)

• EGR volume control valve (DC motor)
• EGR volume control valve control position 

sensor

EGR volume control valve terminal

ECM

Continuity

Connector

Terminal

Connector

Terminal

F88

1

F58

32

Existed

2

14

3

59

5

38

6

13

P0488 EGR SYSTEM

EC-955

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

1.

Disconnect EGR volume control valve harness connector.

2.

Check resistance EGR volume control valve harness connector.

If NG, replace EGR volume control valve. Refer to 

EC-881, "Work Procedure"

.

EGR VOLUME CONTROL VALVE CONTROL POSITION SENSOR

1.

Disconnect EGR volume control valve harness connector.

2.

Check continuity EGR volume control valve harness connector.

If NG, replace EGR volume control valve. Refer to 

EC-881, "Work Procedure"

.

EGR volume control valve

Resistance

Connector

Terminal

Connector

Terminal

F88

2

F88

6

2.3 

Ω

 [at 25

°

C (77

°

F)]

EGR volume control valve

Continuity

Connector

Terminal

Connector

Terminal

F88

1

F88

3

Continuity should exist.

EC-956

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

P0504 ASCD BRAKE SWITCH

P0504 ASCD BRAKE SWITCH

DTC Logic

INFOID:0000000006496644

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000006496645

1.

CHECK GROUND CONNECTIONS

1.

Turn ignition switch OFF and wait at least 20 seconds.

2.

 Check ground connection E38. Refer to Ground inspection in 

GI-44, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CHECK ASCD BRAKE SWITCH POWER SUPPLY CIRCUIT

1.

Disconnect ACSD brake switch harness connector.

2.

Check the voltage between ACSD brake switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair open circuit or short to ground or short to power in harness or connectors.

3.

CHECK ASCD BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

Check the continuity between ACSD brake switch harness connector and ECM harness connector.

2.

Also check harness for short to ground and short to power. 

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair open circuit or short to ground or short to power in harness or connectors.

4.

CHECK ASCD BRAKE SWITCH

Refer to 

EC-957, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace ASCD brake switch.

5.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-42, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace ACSD brake switch.

DTC No.

Trouble diagnosis name

Possible cause

P0504

ASCD brake switch circuit

• Harness or connectors

(The ASCD brake switch circuit is open or shorted.)

• ASCD brake switch

ACSD brake switch

Ground

Voltage

Connector

Terminal

M203 (RHD models)

E112 (LHD models)

1

Ground

Battery voltage

ACSD brake switch

ECM

Continuity

Connector

Terminal

Connector

Terminal

M203 (RHD models)

E112 (LHD models)

2

E32

148

Existed

P0504 ASCD BRAKE SWITCH

EC-957

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

NO

>> Repair or replace.

Component Inspection

INFOID:0000000006496646

1.

CHECK ASCD BRAKE SWITCH-I

1.

Turn ignition switch OFF.

2.

Disconnect ASCD brake switch harness connector.

3.

Check the continuity between ASCD brake switch terminals under the following condition.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace ASCD brake switch.

ASCD brake switch

Condition

Continuity

Connector

Terminals

Connector

Terminal

M203 
(RHD 

models)

E112 (LHD 

models)

1

M203 
(RHD 

models)

E112 

(LHD 

models)

2

ASCD brake switch

Depressed

Not existed

Released

Existed

EC-958

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

P0525 ASCD SYSTEM

P0525 ASCD SYSTEM

DTC Logic

INFOID:0000000006496647

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000006496648

1.

CHECK GROUND CONNECTIONS

1.

Turn ignition switch OFF and wait at least 20 seconds.

2.

 Check ground connection E38. Refer to Ground inspection in 

GI-44, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CHECK ASCD BRAKE SWITCH AND CLUTCH PEDAL POSITION SWITCH POWER SUPPLY CIRCUIT

1.

Disconnect ACSD brake switch and clutch pedal position switch harness connectors.

2.

Check the voltage between ACSD brake switch and clutch pedal position switch harness connectors and
ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair open circuit or short to ground or short to power in harness or connectors.

3.

CHECK ASCD BRAKE SWITCH INPUT SIGNAL CIRCUIT AND CLUTCH PEDAL POSITION SWITCH

GROUND CIRCUIT FOR OPEN AND SHORT

1.

Check the continuity between ACSD brake switch harness connector and ECM harness connector.

2.

Check the continuity between clutch pedal position switch harness connector and ground.

DTC No.

Trouble diagnosis name

Possible cause

P0525

• ASCD brake switch circuit
• Clutch pedal position switch circuit

• Harness or connectors

(The ASCD brake switch circuit is open or shorted.)
(The Clutch pedal position switch circuit is open or shorted.)

• ASCD brake switch
• Clutch pedal position switch

ACSD brake switch

Ground

Voltage

Connector

Terminal

M203 (RHD models)

E112 (LHD models)

1

Ground

Battery voltage

Clutch pedal position switch

Ground

Voltage

Connector

Terminal

M208 (RHD models)

E111 (LHD models)

3

Ground

Battery voltage

ACSD brake switch

ECM

Continuity

Connector

Terminal

Connector

Terminal

M203 (RHD models)

E112 (LHD models)

2

E32

148

Existed

P0525 ASCD SYSTEM

EC-959

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

3.

Also check harness for short to ground and short to power. 

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair open circuit or short to ground or short to power in harness or connectors.

4.

CHECK ASCD BRAKE SWITCH AND CLUTCH PEDAL POSITION SWITCH

Refer to 

EC-959, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace ASCD brake switch or clutch pedal position switch.

5.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-42, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace ACSD brake switch or clutch pedal position switch.

NO

>> Repair or replace.

Component Inspection

INFOID:0000000006496649

1.

CHECK ASCD BRAKE SWITCH-I

1.

Turn ignition switch OFF.

2.

Disconnect ASCD brake switch harness connector.

3.

Check the continuity between ASCD brake switch terminals under the following condition.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace ASCD brake switch.

2.

CHECK CLUTCH PEDAL POSITION SWITCH-I

1.

Turn ignition switch OFF.

2.

Disconnect clutch pedal position switch harness connector.

3.

Check the continuity between clutch pedal position switch terminals under the following condition.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace clutch pedal position switch.

Clutch pedal position switch

Ground

Continuity

Connector

Terminal

M208 (RHD models)

E111 (LHD models)

4

Ground

Existed

ASCD brake switch

Condition

Continuity

Connector

Terminals

Connector

Terminal

M203 
(RHD 

models)

E112 (LHD 

models)

1

M203 
(RHD 

models)

E112 

(LHD 

models)

2

ASCD brake switch

Depressed

Not existed

Released

Existed

clutch pedal position switch

Condition

Continuity

Connector

Terminals

Connector

Terminal

M208 (RHD 

models)

E111 (LHD 

models)

3

M208 (RHD 

models)

E111 (LHD 

models)

4

clutch pedal position 
switch

Depressed

Not existed

Released

Existed

EC-960

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

P0530 REFRIGERANT PRESSURE SENSOR

P0530 REFRIGERANT PRESSURE SENSOR

DTC Logic

INFOID:0000000006496650

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000006496651

1.

CHECK GROUND CONNECTIONS

1.

Turn ignition switch OFF.

2.

 Check ground connection E38. Refer to Ground inspection in 

GI-44, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CHECK REFRIGERANT PRESSURE SENSOR POWER SUPPLY CIRCUIT

1.

Disconnect refrigerant pressure sensor harness connector.

2.

Turn ignition switch ON.

3.

Check the voltage between refrigerant pressure sensor connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 3.

3.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors E8, F1
• Harness for open or short between ECM and refrigerant pressure sensor

>> Repair open circuit or short to ground or short to power in harness or connectors.

4.

CHECK REFRIGERANT PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check the continuity between refrigerant pressure sensor harness connector and ECM harness connec-
tor.

4.

Also check harness for short to ground and short to power. 

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 5.

5.

DETECT MALFUNCTIONING PART

DTC No.

Trouble diagnosis name

Possible cause

P0530

REFRIGERANT PRESSURE SENSOR CIRCUIT

• Harness or connectors

(Refrigerant pressure sensor circuit is 
open or shorted.)

• Refrigerant pressure sensor

Refrigerant pressure sensor

Ground

Voltage

Connector

Terminal

E49

3

Ground

Approx. 5V

Refrigerant pressure sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

E49

1

F58

35

Existed

 

 

 

 

 

 

 

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