Infiniti FX35, FX50 (S51). Manual — part 867

P1233, P2101 ELECTRIC THROTTLE CONTROL FUNCTION

EC-1009

< DTC/CIRCUIT DIAGNOSIS >

[VK50VE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

Refer to

GI-36, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> GO TO 13.

NO

>> Repair or replace harness or connectors.

13.

REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1.

Replace malfunction electric throttle control actuator.

2.

Perform

EC-1009, "Special Repair Requirement"

.

>> INSPECTION END

Component Inspection

INFOID:0000000005237493

1.

CHECK THROTTLE CONTROL MOTOR

1.

Turn ignition switch OFF.

2.

Disconnect electric throttle control actuator harness connector.

3.

Check resistance between electric throttle control actuator terminals as per the following.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1.

Replace malfunctioning electric throttle control actuator.

2.

Perform

EC-1009, "Special Repair Requirement"

.

>> INSPECTION END

Special Repair Requirement

INFOID:0000000005237494

1.

PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

Refer to

EC-581, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"

>> GO TO 2.

2.

PERFORM IDLE AIR VOLUME LEARNING

Refer to

EC-582, "IDLE AIR VOLUME LEARNING : Special Repair Requirement"

>> END

Electric throttle control actuator

Resistance

Bank

Connector

Terminals

1

F66

5 and 6

Approx. 1 - 15

Ω

[at 25

°

C (77

°

F)]

2

F64

5 and 6

EC-1010

< DTC/CIRCUIT DIAGNOSIS >

[VK50VE]

P1236, P2118 THROTTLE CONTROL MOTOR

P1236, P2118 THROTTLE CONTROL MOTOR

Description

INFOID:0000000005237495

The throttle control motor is operated by the ECM and it opens and closes the throttle valve.
The current opening angle of the throttle valve is detected by the throttle position sensor. The throttle position
sensor provides feedback to the ECM, when opens/closes the throttle valve in response to driving conditions
via the throttle control motor.

DTC Logic

INFOID:0000000005237496

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next test.
1.

Turn ignition switch OFF and wait at least 10 seconds.

2.

Turn ignition switch ON.

3.

Turn ignition switch OFF and wait at least 10 seconds.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON and wait at least 2 seconds.

2.

Start engine and let it idle for 5 seconds.

3.

Check DTC.

Is DTC detected?

YES

>> Go to

EC-1010, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000005237497

1.

CHECK GROUND CONNECTION

1.

Turn ignition switch OFF.

2.

Check ground connection M95. Refer to Ground Inspection in

GI-39, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

Disconnect electric throttle control actuator harness connector.

2.

Disconnect ECM harness connector.

3.

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

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1236

Throttle control motor
(bank 2) circuit short

ECM detects short in both circuits between
ECM and throttle control motor.

• Harness or connectors

(Throttle control motor circuit is shorted.)

• Electric throttle control actuator

(Throttle control motor)

P2118

Throttle control motor
(bank 1) circuit short

P1236, P2118 THROTTLE CONTROL MOTOR

EC-1011

< DTC/CIRCUIT DIAGNOSIS >

[VK50VE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

4.

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

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace malfunctioning part.

3.

CHECK THROTTLE CONTROL MOTOR

Refer to

EC-1009, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 5.

4.

CHECK INTERMITTENT INCIDENT

Refer to

GI-36, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace harness or connectors.

5.

REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1.

Replace malfunctioning electric throttle control actuator.

2.

Perform

EC-1012, "Special Repair Requirement"

.

>> INSPECTION END

Component Inspection

INFOID:0000000005237498

1.

CHECK THROTTLE CONTROL MOTOR

1.

Turn ignition switch OFF.

2.

Disconnect electric throttle control actuator harness connector.

3.

Check resistance between electric throttle control actuator terminals as per the following.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1.

Replace malfunctioning electric throttle control actuator.

2.

Perform

EC-1009, "Special Repair Requirement"

.

DTC

Electric throttle control actuator

ECM

Continuity

Bank

Connector

Terminal

Connector

Terminal

P1236

2

F64

5

F111

2

Not existed

5

Existed

6

2

Existed

5

Not existed

P2118

1

F66

5

F110

50

Not existed

53

Existed

6

50

Existed

53

Not existed

Electric throttle control actuator

Resistance

Bank

Connector

Terminals

1

F66

5 and 6

Approx. 1 - 15

Ω

[at 25

°

C (77

°

F)]

2

F64

5 and 6

EC-1012

< DTC/CIRCUIT DIAGNOSIS >

[VK50VE]

P1236, P2118 THROTTLE CONTROL MOTOR

>> INSPECTION END

Special Repair Requirement

INFOID:0000000005237499

1.

PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

Refer to

EC-581, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"

>> GO TO 2.

2.

PERFORM IDLE AIR VOLUME LEARNING

Refer to

EC-582, "IDLE AIR VOLUME LEARNING : Special Repair Requirement"

>> END