Infiniti G35 (V35). Manual - part 428

DTC P2122, P2123 APP SENSOR

EC-593

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DTC Confirmation Procedure

NBS0010P

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.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 8V at idle.

 WITH CONSULT-II

1.

Turn ignition switch ON.

2.

Select “DATA MONITOR” mode with CONSULT-II.

3.

Start engine and let it idle for 1 second.

4.

If DTC is detected, go to 

EC-595, "Diagnostic Procedure"

 .

 WITH GST

Follow the procedure “WITH CONSULT-II” above.

SEF058Y

EC-594

DTC P2122, P2123 APP SENSOR

Wiring Diagram

NBS0010Q

TBWT0276E

DTC P2122, P2123 APP SENSOR

EC-595

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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

NBS0010R

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)

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

EC-596

DTC P2122, P2123 APP SENSOR

2. 

CHECK APP SENSOR 1 POWER SUPPLY CIRCUIT

1.

Disconnect accelerator pedal position (APP) sensor harness
connector.

2.

Turn ignition switch ON.

3.

Check voltage between APP sensor terminal 6 and ground with
CONSULT-II or tester.

OK or NG

OK

>> GO TO 4.

NG

>> GO TO 3.

3. 

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.

4. 

CHECK APP SENSOR 1 GROUND CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check harness continuity between APP sensor terminal 3 and ECM terminal 82.
Refer to Wiring Diagram.

4.

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

OK or NG

OK

>> GO TO 6.

NG

>> GO TO 5.

5. 

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.

PBIB0996E

Voltage: Approximately 5V

PBIB0914E

Continuity should exist.