Qashqai J11. Engine control system (R9M) - part 16

 

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Qashqai J11. Engine control system (R9M) - part 16

 

 

EC9-242

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

P0471 EXHAUST PRESSURE SENSOR

P0471 EXHAUST PRESSURE SENSOR

DTC Logic

INFOID:0000000010309175

DTC DETECTION LOGIC

NOTE:
If DTC P0471 is displayed with DTC P0335, P0470, and P2226, perform the trouble diagnosis for DTC
P0335, P0470, and P2226. Refer to 

EC9-108, "DTC Index"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DIAGNOSIS PROCEDURE

NOTE:
DTC P0471 can not duplicate.

>> Proceed to 

EC9-242, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000010502768

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.

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.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P0471

PRS UPSTR OF TBN
(Exhaust pressure sensor “A” 
circuit range/performance)
• 1.DEF: INCORRECT SEN-

SOR MOUNTING

• 2.DEF: SIGNAL INCOHER-

ENCE

• Difference between barometric pressure 

and exhaust pressure while engine 
stopped.

• Exhaust pressure is excessively low while 

engine is running.

Exhaust gas pressure sensor

+

-

Voltage

(Approx.)

Exhaust gas pressure sensor

Connector

Terminal

F135

3

Ground

5 V

P0471 EXHAUST PRESSURE SENSOR

EC9-243

< 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.

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 P0471 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:0000000010309177

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

EC9-244

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

P0487 EGR VOLUME CONTROL VALVE

P0487 EGR VOLUME CONTROL VALVE

DTC Logic

INFOID:0000000010309178

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 

EC9-244, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010309179

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 content)

DTC detecting condition

Possible cause

P0487

EGR VLV CMD CIRC
(Exhaust gas recirculation throt-
tle control circuit “A”/open)
• 1.DEF: OFFSET IMPLAUSI-

BLE

ECM detects abnormally closed posi-
tion of high pressure EGR volume con-
trol valve.

• Harness or connectors
• High pressure EGR volume control 

valve

• High pressure EGR valve position sen-

sor

P0487 EGR VOLUME CONTROL VALVE

EC9-245

< 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 

EC9-244, "DTC Logic"

.

Is the DTC P0487 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 

EC9-245, "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:0000000010309180

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

106

F14

6

Existed

108

4

110

5

144

1

148

2

High pressure EGR volume control 

valve

Resistance (Approx.)

+

-

Terminal

1

2

2.35 

EC9-246

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

P0488 EGR SYSTEM

P0488 EGR SYSTEM

DTC Logic

INFOID:0000000010309181

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 3 seconds.

2.

Check DTC.

Is DTC detected?

YES

>> Proceed to 

EC9-246, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010502829

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 content)

DTC detecting condition

Possible cause

P0488

EGR VALVE POSITION CN-
TRL
(Exhaust gas recirculation 
throttle control circuit “A” 
range/performance)
• 1.DEF: NO RESPONSE 

FROM THE VALVE MO-
TOR

• 2.DEF: VALVE LOCKED

ECM detects high pressure EGR volume 
control valve regulation error.

• Harness or connectors
• High pressure EGR volume control valve
• High pressure EGR volume control valve 

position sensor

P0488 EGR SYSTEM

EC9-247

< 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 

EC9-246, "DTC Logic"

.

Is the DTC P0488 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 

EC9-247, "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:0000000010309183

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

106

F14

6

Existed

108

4

110

5

144

1

148

2

High pressure EGR volume control 

valve

Resistance (Approx.)

+

-

Terminal

1

2

2.35 

EC9-248

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

P0530 REFRIGERANT PRESSURE SENSOR

P0530 REFRIGERANT PRESSURE SENSOR

DTC Logic

INFOID:0000000010309189

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 2 seconds.

2.

Check DTC.

Is DTC detected?

YES

>> Go to 

EC9-248, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010309190

1.

CHECK REFRIGERANT PRESSURE SENSOR POWER SUPPLY CIRCUIT

1.

Disconnect refrigerant pressure sensor harness connector.

2.

Check the voltage between refrigerant pressure sensor connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

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

2.

CHECK REFRIGERANT PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF and wait at least 1 minute.

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. 

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P0530

RFRG TEMP PRESS SEN VOLT
(A/C refrigerant pressure sensor “A” 
circuit)
• 1.DEF: VOLTAGE TOO LOW
• 2.DEF: VOLTAGE TOO HIGH

• Refrigerant pressure sensor signal 

voltage remains more than 4.75 V 
for 2 seconds or more.

• Refrigerant pressure sensor signal 

voltage remains less than 0.1 V for 2 
seconds or more.

• Harness or connectors

(Refrigerant pressure sensor circuit is 
open or shorted.)

• Refrigerant pressure sensor

+

-

Voltage

(Approx.)

Refrigerant pressure sensor

Connector

Terminal

E41

3

Ground

5.0 V

+

-

Continuity

Refrigerant pressure sensor

ECM

Connector

Terminal

Connector

Terminal

E41

1

F83

141

Existed

P0530 REFRIGERANT PRESSURE SENSOR

EC9-249

< 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 3.

NO

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

3.

CHECK REFRIGERANT PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

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

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, short to ground or short to power in harness or connectors.

4.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-41, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace refrigerant pressure sensor.

NO

>> Repair or replace.

+

-

Continuity

Refrigerant pressure sensor

ECM

Connector

Terminal

Connector

Terminal

E41

2

F83

137

Existed

EC9-250

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

P0544 EGT SENSOR 1

P0544 EGT SENSOR 1

DTC Logic

INFOID:0000000010309191

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DIAGNOSIS PROCEDURE

NOTE:
DTC P0544 can not duplicate.

>> Proceed to 

EC9-250, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000010309192

1.

CHECK ECM HARNESS CONNECTOR CONNECTIONS

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 TEMPERATURE SENSOR 1 HARNESS CONNECTOR CONNECTIONS

Check exhaust gas temperature sensor 1 control valve harness connector connection.
Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace error-detected parts.

3.

CHECK EXHAUST GAS TEMPERATURE SENSOR 1 CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Check exhaust gas temperature sensor 1 circuit for open and short.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace error-detected parts.

4.

CHECK EXHAUST GAS TEMPERATURE SENSOR 1

Refer to 

EC9-251, "Component Inspection (Exhaust Gas Temperature Sensor 1)"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

NO

>> Replace error-detected parts. 

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P0544

TBN UPSTR TEMP SEN CIRC
(Exhaust gas temperature sensor cir-
cuit bank 1 sensor 1)
• 1.DEF: VOLTAGE TOO LOW
• 2.DEF: VOLTAGE TOO HIGH

• An excessively low voltage from Ex-

haust Gas Temperature sensor is 
sent to ECM for 15 seconds or 
more.

• An excessively high voltage from 

Exhaust Gas Temperature sensor is 
sent to ECM for 1 second or more.

• Harness or connectors

(Exhaust gas temperature sensor 1 
circuit is open or shorted.)

• Exhaust gas temperature sensor 1

+

-

Continuity

ECM

EGT sensor 1

Connector

Terminal

Connector

Terminal

F83

134

F150

1

Existed

150

2

P0544 EGT SENSOR 1

EC9-251

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

C

D

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F

G

H

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J

K

L

M

A

EC9

N

P

O

Component Inspection (Exhaust Gas Temperature Sensor 1)

INFOID:0000000010309193

1.

CHECK EXHAUST GAS TEMPERATURE SENSOR 1

1.

Reconnect all harness connectors disconnected.

2.

Start the engine.

3.

Select “TEMP UPSTREAM TURBINE” in “DATA MONITOR” mode of “ENGINE” with CONSULT.

4.

Maintain the following conditions for at least 2 minutes and check the monitor status “TEMP UPSTREAM
TURBINE”.

Does the value of the exhaust gas temperature sensor 1 vary?

YES

>> Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

NO

>> Replace exhaust gas temperature sensor 1.

Engine speed

Approx. 2,500 rpm

Engine coolant temperature

More than 80

°

C

EC9-252

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

P0560 BATTERY VOLTAGE

P0560 BATTERY VOLTAGE

DTC Logic

INFOID:0000000010309197

DTC DETECTION LOGIC

NOTE:
If this DTC is detected, first confirm self-diagnostic result in IPDM E/R.

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 10 seconds.

2.

Check DTC.

Is DTC detected?

YES

>> Proceed to 

EC9-252, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010309198

1.

CHECK BATTERY VOLTAGE

1.

Turn ignition switch ON.

2.

Check battery voltage.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Recharge the battery.

2.

CHECK BATTERY TERMINALS

1.

Turn ignition switch OFF.

2.

Check battery terminals condition.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair the battery terminals.

3.

CHECK BATTERY AND ALTERNATOR

Check that the proper type of battery and type of alternator are installed.
Refer to, 

PG-158, "Battery"

 and 

CHG-34, "Alternator"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

NO

>> Replace with a proper one.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P0560

COMPUTER SUPPLY 
VOLTAGE
(System voltage)
• 1.DEF: VOLTAGE TOO 

LOW

• 2.DEF: VOLTAGE TOO 

HIGH

• A battery power supply voltage re-

mains more than 17 V or more for 
2.5 seconds or more. 

• A battery power supply voltage re-

mains less than 9 V or more for 10 
seconds or more. 

• Harness or connectors

(ECM power supply circuit is open or shorted.)

• Battery
• Battery terminal
• Alternator
• IPDM E/R

Voltage: Above 11 V

P0564 ASCD STEERING SWITCH

EC9-253

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

C

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EC9

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P0564 ASCD STEERING SWITCH

DTC Logic

INFOID:0000000010309199

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 10 seconds.

2.

Press RESUME/ACCELERATE switch for at least 10 seconds, then release it and wait at least 10 sec-
onds.

3.

Press SET/COAST switch for at least 10 seconds, then release it and wait at least 10 seconds.

4.

Press CANCEL switch for at least 10 seconds, then release it and wait at least 10 seconds.

5.

Check DTC.

Is DTC detected?

YES

>> Go to 

EC9-253, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010309200

1.

CHECK ASCD STEERING SWITCH CIRCUIT

1.

Turn ignition switch ON.

2.

Check the voltage between ECM harness connector terminals as follows.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 2.

2.

CHECK ASCD STEERING SWITCH GROUND CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF and wait at least 1 minute.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P0564

SL LMTR/CC FNC
(Cruise control multi-function 
input “A” circuit)
• 1.DEF: VALUES OUTSIDE 

TOLERANCES

• 2.DEF: SIGNAL INCO-

HERENCE

• CO.1: OPEN CIRCUIT OR 

SHORT CIRCUIT TO +12 
V

• An ASCD steering switch signal voltage is 

out of the specified range.

• ASCD steering switch signal circuit is open.
• ASCD steering switch signal circuit is short 

to battery.

• ECM cannot detect the ASCD steering 

switch signal.

• Harness or connectors

(The switch circuit is open or shorted.)

• ASCD steering switch

ECM

Condition

Voltage

(Approx.)

Connector

+

Terminal

E58

15

14

CANCEL switch: Pressed

1.0 V

SET/COAST switch: Pressed

2.0 V

RESUME/ACCELERATE switch: Pressed

3.0 V

All ASCD steering switches: Released

4.0 V

EC9-254

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

P0564 ASCD STEERING SWITCH

2.

Disconnect combination switch harness connector.

3.

Disconnect ECM harness connector.

4.

Check the continuity between combination switch (spiral cable) and ECM harness connector.

5.

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

Is the inspection result normal?

YES

>> GO TO 3.

NO

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

3.

CHECK ASCD STEERING SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

Check the continuity between combination switch (spiral cable) 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, short to ground or short to power in harness or connectors.

4.

CHECK ASCD STEERING SWITCH 

Refer to 

EC9-254, "Component Inspection (ASCD Steering Switch)"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace ASCD steering switch.

5.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-41, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection (ASCD Steering Switch)

INFOID:0000000010309201

1.

CHECK ASCD STEERING SWITCH

1.

Disconnect combination switch (spiral cable) harness connector.

2.

Check the continuity between combination switch harness connector terminals under following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace ASCD steering switch.

+

-

Continuity

Combination switch (spiral cable)

ECM

Connector

Terminal

Connector

Terminal

M66

28

E58

14

Existed

+

-

Continuity

Combination switch (spiral cable)

ECM

Connector

Terminal

Connector

Terminal

M66

27

E58

15

Existed

Combination switch

Condition

Resistance

(Approx.)

Connector

+

-

Terminals

M353

8

9

CANCEL switch: Pressed

250 

SET/COAST switch: Pressed

660 

RESUME/ACCELERATE switch: Pressed

1,480 

All ASCD steering switches: Released

4,000 

P0575 ASCD STEERING SWITCH

EC9-255

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

C

D

E

F

G

H

I

J

K

L

M

A

EC9

N

P

O

P0575 ASCD STEERING SWITCH

DTC Logic

INFOID:0000000010309207

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 5 seconds.

2.

Check DTC.

Is DTC detected?

YES

>> Go to 

EC9-255, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010309208

1.

CHECK ASCD STEERING SWITCH SIGNAL-1

1.

Turn ignition switch ON.

2.

Check the voltage between ECM harness connector terminals as follows.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

NO

>> GO TO 2.

2.

CHECK ASCD STEERING SWITCH

1.

Turn ignition switch OFF and wait at least 1 minute.

2.

Disconnect combination switch harness connector.

3.

Check the continuity between combination switch (spiral cable) harness connector terminals.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible Cause

P0575

CC/SL LMTR BUTTONS
(Cruise control input circuit)
• 1.DEF: IMPLAUSIBLE 

SIGNAL

ECM receives ASCD MAIN switch signal and 
Speed Limiter MAIN switch signal simulta-
neously.

ASCD steering switch

+

Condition

Voltage

(Approx.)

ECM

Connector

Terminal

E58

3

Ground

• ASCD MAIN switch: NOT pressed
• Speed Limiter MAIN switch: NOT pressed

0 V

10

3

• ASCD MAIN switch: Pressed
• Speed Limiter MAIN switch: NOT pressed

Battery Voltage

10

0 V

3

• ASCD MAIN switch: NOT pressed
• Speed Limiter MAIN switch: Pressed

0 V

10

Battery Voltage

EC9-256

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

P0575 ASCD STEERING SWITCH

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace ASCD steering switch.

3.

CHECK ASCD STEERING SWITCH GROUND CIRCUIT FOR OPEN AND SHORT

1.

Disconnect ECM harness connector.

2.

Check the continuity between combination switch (spiral cable) harness connector terminals.

Is the inspection result normal?

YES

>> Replace spiral cable. Refer to 

SR-17, "Removal and Installation"

.

NO

>> Repair or replace error-detected parts.

Combination switch (spiral cable)

Continuity

Connector

+

-

Terminal

M353

1

2

Not existed

Combination switch (spiral cable)

Continuity

Connector

+

-

Terminal

M66

20

21

Not existed

P060A ECM

EC9-257

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

C

D

E

F

G

H

I

J

K

L

M

A

EC9

N

P

O

P060A ECM

DTC Logic

INFOID:0000000010309216

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 

EC9-257, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010309217

1.

INSPECTION START

1.

Turn ignition switch ON.

2.

Erase DTC.

3.

Turn ignition switch OFF and wait for 1 minute.

4.

Turn ignition switch ON and wait at least 1 second.

5.

Perform the self-diagnosis.

Is the DTC P060A displayed again?

YES

>> GO TO 2.

NO

>> INSPECTION END

2.

REPLACE ECM

1.

Replace ECM.

2.

Perform 

EC9-144, "Work Procedure"

.

>> INSPECTION END

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P060A


(Internal control module moni-
toring processor performance)

Internal monitoring processor error.

ECM

 

 

 

 

 

 

 

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