Infiniti M35/M45 Y50. Manual - part 718

 

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Infiniti M35/M45 Y50. Manual - part 718

 

 

DTC P2127, P2128 APP SENSOR

EC-1345

[VK45DE]

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Wiring Diagram

NBS005OT

TBWT1502E

EC-1346

[VK45DE]

DTC P2127, P2128 APP SENSOR

Specification data are reference values and are measured between each terminal and ground.

CAUTION:

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.

Diagnostic Procedure

NBS005OU

1. 

CHECK GROUND CONNECTIONS

1.

Turn ignition switch OFF.

2.

Loosen and retighten ground screws on the body.
Refer to 

EC-864, "Ground Inspection"

 .

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace ground connections.

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

47

G

Sensor power supply 
(Throttle position sensor)

[Ignition switch: ON]

Approximately 5V

82

W

Sensor ground
(APP sensor 1)

[Engine is running]

Warm-up condition

Idle speed

Approximately 0V

83

P

Sensor ground
(APP sensor 2)

[Engine is running]

Warm-up condition

Idle speed

Approximately 0V

90

L

Sensor power supply
(APP sensor 1)

[Ignition switch: ON]

Approximately 5V

91

BR

Sensor power supply
(APP sensor 2)

[Ignition switch: ON]

Approximately 5V

98

R

Accelerator pedal position 
sensor 2

[Ignition switch: ON]

Engine: Stopped

Accelerator pedal: Fully released

0.20 - 0.55V

[Ignition switch: ON]

Engine: Stopped

Accelerator pedal: Fully depressed

1.85 - 2.40V

106

LG

Accelerator pedal position 
sensor 1

[Ignition switch: ON]

Engine: Stopped

Accelerator pedal: Fully released

0.4 - 1.1V

[Ignition switch: ON]

Engine: Stopped

Accelerator pedal: Fully depressed

3.7 - 4.8V

1.

Body ground M70

2.

Body ground M16

PBIB2782E

DTC P2127, P2128 APP SENSOR

EC-1347

[VK45DE]

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2. 

CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-I

1.

Disconnect accelerator pedal position (APP) sensor (1) harness
connector.

2.

Turn ignition switch ON.

3.

Check voltage between APP sensor terminal 5 and ground with
CONSULT-II or tester.

OK or NG

OK

>> GO TO 8.

NG

>> GO TO 3.

3. 

CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-II

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check harness continuity between APP sensor terminal 5 and ECM terminal 91.
Refer to Wiring Diagram.

OK or NG

OK

>> GO TO 5.

NG

>> GO TO 4.

4. 

DETECT MALFUNCTIONING PART

Check the following.

Harness connectors E108, M15

Harness for open or short between ECM and accelerator pedal position sensor

>> Repair open circuit.

5. 

CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-III

Check harness for short to power and short to ground, between the following terminals.

OK or NG

OK

>> GO TO 6.

NG

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

PBIB2704E

Voltage: Approximately 5V

PBIA9607J

Continuity should exist.

ECM terminal

Sensor terminal

Reference Wiring Diagram

91

APP sensor terminal 5

EC-1345

47

Electric throttle control actuator terminal 1

EC-934

EC-1348

[VK45DE]

DTC P2127, P2128 APP SENSOR

6. 

CHECK THROTTLE POSITION SENSOR

Refer to 

EC-938, "Component Inspection"

 .

OK or NG

OK

>> GO TO 14.

NG

>> GO TO 7.

7. 

REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1.

Replace the electric throttle control actuator.

2.

Perform 

EC-788, "Throttle Valve Closed Position Learning"

 .

3.

Perform 

EC-788, "Idle Air Volume Learning"

 .

>> INSPECTION END

8. 

CHECK APP SENSOR 2 GROUND CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check harness continuity between APP sensor terminal 1 and ECM terminal 83.
Refer to Wiring Diagram.

4.

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

OK or NG

OK

>> GO TO 10.

NG

>> GO TO 9.

9. 

DETECT MALFUNCTIONING PART

Check the following.

Harness connectors E108, M15

Harness for open or short between ECM and accelerator pedal position sensor

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

10. 

CHECK APP SENSOR 2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

Check harness continuity between ECM terminal 98 and APP sensor terminal 6.
Refer to Wiring Diagram.

2.

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

OK or NG

OK

>> GO TO 12.

NG

>> GO TO 11.

11. 

DETECT MALFUNCTIONING PART

Check the following.

Harness connectors E108, M15

Harness for open or short between ECM and accelerator pedal position sensor

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

Continuity should exist.

Continuity should exist.

 

 

 

 

 

 

 

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