Infiniti G35 (V35). Manual - part 430

DTC P2127, P2128 APP SENSOR

EC-601

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Wiring Diagram

NBS0010Y

TBWB0082E

EC-602

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

NBS0010Z

1. 

CHECK GROUND CONNECTIONS

1.

Turn ignition switch OFF.

2.

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

EC-159, "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

B

Sensor power supply
(Throttle position sensor)

[Ignition switch: ON]

Approximately 5V

82

GY/L

Sensor ground
(Accelerator pedal position 
sensor 1)

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 0V

83

B/R

Sensor ground
(Accelerator pedal position 
sensor 2)

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 0V

90

BR/Y

Sensor power supply
(Accelerator pedal position 
sensor 1)

[Ignition switch: ON]

Approximately 5V

91

G

Sensor power supply
(Accelerator pedal position 
sensor 2)

[Ignition switch: ON]

Approximately 5V

98

LG/B

Accelerator pedal position 
sensor 2

[Ignition switch: ON]

●

Engine stopped

●

Accelerator pedal: Fully released

0.15 - 0.60V

[Ignition switch: ON]

●

Engine stopped

●

Accelerator pedal: Fully depressed

1.95 - 2.40V

106

BR

Accelerator pedal position 
sensor 1

[Ignition switch: ON]

●

Engine stopped

●

Accelerator pedal: Fully released

0.5 - 1.0V

[Ignition switch: ON]

●

Engine stopped

●

Accelerator pedal: Fully depressed

3.9 - 4.7V

PBIB2192E

DTC P2127, P2128 APP SENSOR

EC-603

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2. 

CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-I

1.

Disconnect accelerator pedal position (APP) sensor harness
connector.

2.

Turn ignition switch ON.

3.

Check voltage between APP sensor terminal 4 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 4 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 E10, F1

●

Harness for open between ECM and APP 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.

PBIB0996E

Voltage: Approximately 5V

PBIB0915E

Continuity should exist.

ECM terminal

Sensor terminal

Reference Wiring Diagram

47

Electric throttle control actuator terminal 1

EC-608

91

APP sensor terminal 4

EC-601

EC-604

DTC P2127, P2128 APP SENSOR

6. 

CHECK THROTTLE POSITION SENSOR

Refer to 

EC-612, "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-79, "Throttle Valve Closed Position Learning"

 .

3.

Perform 

EC-79, "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 E10, F1

●

Harness for open or short between ECM and APP 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 2.
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 E10, F1

●

Harness for open or short between ECM and APP sensor

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

Continuity should exist.

Continuity should exist.