Nissan Qashqai J11. Manual - part 236

 

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Nissan Qashqai J11. Manual - part 236

 

 

ECH-242

< DTC/CIRCUIT DIAGNOSIS >

[HRA2DDT]

P0638 ELECTRIC THROTTLE CONTROL ACTUATOR FUNCTION

P0638 ELECTRIC THROTTLE CONTROL ACTUATOR FUNCTION

DTC Logic

INFOID:0000000010379135

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

Turn ignition switch OFF and wait at least 12 minutes.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start engine and run engine at idle speed for at least 10 second.

2.

Check DTC.

Is DTC detected?

YES

>> Proceed to 

ECH-242, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010379136

1.

CHECK ECM HARNESS CONNECTOR CONNECTION

1.

Turn ignition switch OFF.

2.

Check ECM connector connection.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace error-detected parts.

2.

CHECK ELECTRIC THROTTLE CONTROL ACTUATOR HARNESS CONNECTOR CONNECTION

Check electric throttle control actuator harness connector connection.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace error-detected parts.

3.

CHECK ELECTRIC THROTTLE CONTROL ACTUATOR POWER SUPPLY CIRCUIT-1

1.

Disconnect electric throttle control actuator harness connector.

2.

Turn ignition switch ON.

3.

Check the voltage between electric throttle control actuator harness connector terminals.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 8.

4.

CHECK THROTTLE POSITION SENSOR CIRCUIT

1.

Turn ignition switch OFF.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P0638

THROTTLE ACTUATOR B1
(Throttle actuator control 
range/performance bank 1)

The value of electric throttle control actuator 
does not change.

Electric throttle control actuator

Electric throttle control actuator

Voltage

(Approx.)

Connector

+

-

Terminal

Terminal

F46

5

3

5.0 V

P0638 ELECTRIC THROTTLE CONTROL ACTUATOR FUNCTION

ECH-243

< DTC/CIRCUIT DIAGNOSIS >

[HRA2DDT]

C

D

E

F

G

H

I

J

K

L

M

A

ECH

N

P

O

2.

Disconnect ECM harness connector.

3.

Check the continuity between electric throttle control actuator harness connector and ECM harness con-
nector.

4.

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

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace error-detected parts.

5.

CHECK THROTTLE POSITION SENSOR

Refer to 

ECH-244, "Component Inspection (Throttle Position Sensor)"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace error-detected parts.

6.

CHECK THROTTLE CONTROL MOTOR CIRCUIT

1.

Check the continuity between electric throttle control actuator 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 7.

NO

>> Repair or replace error-detected parts.

7.

CHECK THROTTLE CONTROL MOTOR 

Refer to 

ECH-244, "Component Inspection (Throttle Control Motor)"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

NO

>> Repair or replace error-detected parts.

8.

CHECK ELECTRIC THROTTLE CONTROL ACTUATOR POWER SUPPLY CIRCUIT-2

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check the continuity between electric throttle control actuator harness connector and ECM harness con-
nector.

4.

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

Is the inspection result normal?

YES

>> GO TO 9.

Sensor

Electric throttle control actu-

ator

ECM

Continuity

Connector

Terminal

Connector

Terminal

Sensor 1

F46

6

F17

87

Existed

Sensor 2

F46

4

F17

82

Existed

Electric throttle control actu-

ator

ECM

Continuity

Connector

Terminal

Connector

Terminal

F46

1

F18

132

Existed

F46

2

F18

136

Existed

Electric throttle control actu-

ator

ECM

Continuity

Connector

Terminal

Connector

Terminal

F46

5

F17

65

Existed

ECH-244

< DTC/CIRCUIT DIAGNOSIS >

[HRA2DDT]

P0638 ELECTRIC THROTTLE CONTROL ACTUATOR FUNCTION

NO

>> Repair or replace error-detected parts.

9.

CHECK ELECTRIC THROTTLE CONTROL ACTUATOR GROUND CIRCUIT

1.

Check the continuity between electric throttle control actuator 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

>> Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

NO

>> Repair or replace error-detected parts.

Component Inspection (Throttle Position Sensor)

INFOID:0000000010379137

1.

CHECK THROTTLE POSITION SENSOR

1.

Turn ignition switch OFF.

2.

Reconnect all harness connectors disconnected.

3.

Perform 

ECH-105, "Work Procedure"

.

4.

Turn ignition switch ON.

5.

Check the voltage between ECM harness connector terminals under the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1.

Replace electric throttle control actuator.

2.

Proceed to 

ECH-105, "Work Procedure"

.

>> INSPECTION END

Component Inspection (Throttle Control Motor)

INFOID:0000000010379138

1.

CHECK THROTTLE CONTROL MOTOR

1.

Reconnect all harness connectors disconnected.

2.

Check resistance between electric throttle control actuator harness connectors terminals under the follow-
ing conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 2.

Electric throttle control actu-

ator

ECM

Continuity

Connector

Terminal

Connector

Terminal

F46

3

F17

90

Existed

ECM

Condition

Voltage

Connector

+

–

Terminal

Terminal

F17

87

(TP sensor 1)

90

Accelerator pedal: Fully released

0.425 V

Accelerator pedal: Fully depressed

4.760 V

82

(TP sensor 2)

Accelerator pedal: Fully released

0.425 V

Accelerator pedal: Fully depressed

4.760 V

Terminal

Resistance

1 and 2

Approx. 1 - 1.5 

Ω

P0638 ELECTRIC THROTTLE CONTROL ACTUATOR FUNCTION

ECH-245

< DTC/CIRCUIT DIAGNOSIS >

[HRA2DDT]

C

D

E

F

G

H

I

J

K

L

M

A

ECH

N

P

O

2.

REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1.

Replace electric throttle control actuator.

2.

Perform 

ECH-105, "Work Procedure"

.

>> INSPECTION END

 

 

 

 

 

 

 

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