Infiniti FX35 / FX45. Manual - part 583

DTC P2101 ELECTRIC THROTTLE CONTROL FUNCTION

EC-1093

< SERVICE INFORMATION >

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Wiring Diagram

INFOID:0000000001326985

Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-III.

CAUTION:

TBWM1344E

EC-1094

< SERVICE INFORMATION >

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DTC P2101 ELECTRIC THROTTLE CONTROL FUNCTION

Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)

Diagnosis Procedure

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1.

CHECK GROUND CONNECTIONS

1.

Turn ignition switch OFF.

2.

Loosen and retighten three ground screws on the body.
Refer to 

EC-723, "Ground Inspection"

.

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace ground connections.

2.

CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-I

TER-

MI-

NAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

3

P

Throttle control motor relay 
power supply

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14V)

4

L/W

Throttle control motor 
(Close)

[Ignition switch: ON]
• Engine stopped
• Selector lever: D 
• Accelerator pedal: Fully released

0 - 14V

5

L/B

Throttle control motor 
(Open)

[Ignition switch: ON]
• Engine stopped
• Selector lever: D 
• Accelerator pedal: Fully depressed

0 - 14V

104

L/OR

Throttle control motor relay

[Ignition switch: OFF]

BATTERY VOLTAGE
(11 - 14V)

[Ignition switch: ON]

0 - 1.0V

PBIB1104E

PBIB1105E

PBIB2195E

DTC P2101 ELECTRIC THROTTLE CONTROL FUNCTION

EC-1095

< SERVICE INFORMATION >

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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 harness 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 E19, F49
• 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 harness 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-1096

< SERVICE INFORMATION >

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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-717

.

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 (1) harness connec-
tor.

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 (1)
and the housing.

-

Illustration shows the view with intake air duct removed.

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-1097, "Component Inspection"

.

Electric throttle control 

actuator terminal

ECM terminal

Continuity

1

5

Should exist

4

Should not exist

2

5

Should not exist

4

Should exist

PBIB3232E

PBIB3247E