Infiniti FX35 / FX45. Manual - part 434

 

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Infiniti FX35 / FX45. Manual - part 434

 

 

DTC P2101 ELECTRIC THROTTLE CONTROL FUNCTION

EC-497

< SERVICE INFORMATION >

[VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

Check voltage between ECM terminal 3 and ground under the fol-
lowing conditions with CONSULT-III or tester.

OK or NG

OK

>> GO TO 10.

NG

>> GO TO 3.

3.

CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-II

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Disconnect IPDM E/R harness connector E8.

4.

Check continuity between ECM terminal 3 and IPDM E/R terminal 42.
Refer to Wiring Diagram.

5.

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

OK or NG

OK

>> GO TO 5.

NG

>> GO TO 4.

4.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors E64, F65
• Harness for open or short between ECM and IPDM E/R

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

5.

CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT-I

1.

Reconnect all harness connectors disconnected.

2.

Turn ignition switch OFF.

3.

Check voltage between ECM terminal 104 and ground with
CONSULT-III or tester.

OK or NG

OK

>> GO TO 9.

NG

>> GO TO 6.

6.

CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT-II

1.

Disconnect ECM harness connector.

2.

Disconnect IPDM E/R harness connector E9.

3.

Check continuity between ECM terminal 104 and IPDM E/R terminal 47.
Refer to Wiring Diagram.

4.

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

OK or NG

OK

>> GO TO 8.

Ignition switch

Voltage

OFF

Approximately 0V

ON

Battery voltage

(11 - 14V)

MBIB0028E

Continuity should exist.

Voltage: Battery voltage

PBIB1171E

Continuity should exist.

EC-498

< SERVICE INFORMATION >

[VQ35DE]

DTC P2101 ELECTRIC THROTTLE CONTROL FUNCTION

NG

>> GO TO 7.

7.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors E211, M41
• Harness for open or short between ECM and IPDM E/R

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

8.

CHECK FUSE

1.

Disconnect 15A fuse.

2.

Check 15A fuse for blown.

OK or NG

OK

>> GO TO 9.

NG

>> Replace 15A fuse.

9.

CHECK INTERMITTENT INCIDENT

Refer to 

EC-139

.

OK or NG

OK

>> Replace IPDM E/R. Refer to 

PG-17

.

NG

>> Repair or replace harness or connectors.

10.

CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN OR SHORT

1.

Turn ignition switch OFF.

2.

Disconnect electric throttle control actuator harness connector.

3.

Disconnect ECM harness connector.

4.

Check harness continuity between the following terminals.
Refer to Wiring Diagram.

5.

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

OK or NG

OK

>> GO TO 11.

NG

>> Repair or replace.

11.

CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY 

1.

Remove the intake air duct.

2.

Check if foreign matter is caught between the throttle valve and
the housing.

OK or NG

OK

>> GO TO 12.

NG

>> Remove the foreign matter and clean the electric throttle

control actuator inside.

12.

CHECK THROTTLE CONTROL MOTOR

Refer to 

EC-499, "Component Inspection"

.

Electric throttle control 

actuator terminal

ECM terminal

Continuity

3

5

Should not exist

4

Should exist

6

5

Should exist

4

Should not exist

PBIB1557E

PBIB1556E

DTC P2101 ELECTRIC THROTTLE CONTROL FUNCTION

EC-499

< SERVICE INFORMATION >

[VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

OK or NG

OK

>> GO TO 13.

NG

>> GO TO 14.

13.

CHECK INTERMITTENT INCIDENT

Refer to 

EC-139

.

OK or NG

OK

>> GO TO 14.

NG

>> Repair or replace harness or connectors.

14.

REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1.

Replace the electric throttle control actuator.

2.

Perform 

EC-85, "Throttle Valve Closed Position Learning"

.

3.

Perform 

EC-85, "Idle Air Volume Learning"

.

>> INSPECTION END

Component Inspection

INFOID:0000000001326374

THROTTLE CONTROL MOTOR

1.

Disconnect electric throttle control actuator harness connector.

2.

Check resistance between terminals 3 and 6.

3.

If NG, replace electric throttle control actuator and go to next
step.

4.

Perform 

EC-85, "Throttle Valve Closed Position Learning"

.

5.

Perform 

EC-85, "Idle Air Volume Learning"

.

Removal and Installation

INFOID:0000000001326375

ELECTRIC THROTTLE CONTROL ACTUATOR

Refer to 

EM-19

.

Resistance: Approximately 1 - 15 

 [at 25 

°

C (77

°

F)]

PBIB0095E

EC-500

< SERVICE INFORMATION >

[VQ35DE]

DTC P2118 THROTTLE CONTROL MOTOR

DTC P2118 THROTTLE CONTROL MOTOR

Component Description

INFOID:0000000001326376

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 and it provides feed-
back to the ECM to control the throttle control motor to make the throttle valve opening angle properly in
response to driving condition.

On Board Diagnosis Logic

INFOID:0000000001326377

This self-diagnosis has the one trip detection logic.

FAIL-SAFE MODE

When the malfunction is detected, the ECM enters fail-safe mode and the MIL lights up.

DTC Confirmation Procedure

INFOID:0000000001326378

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.

1.

Turn ignition switch ON and wait at least 2 seconds.

2.

Start engine and let it idle for 5 seconds.

3.

Check DTC.

4.

If DTC is detected, go to 

EC-502, "Diagnosis Procedure"

.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P2118
2118

Throttle control motor 
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)

Engine operating condition in fail-safe mode

ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return 
spring.

 

 

 

 

 

 

 

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