Infiniti M35/M45 Y50. Manual - part 615

DTC P0122, P0123 TP SENSOR

EC-933

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DTC Confirmation Procedure

NBS005D3

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-935, "Diagnostic Procedure"

 .

 WITH GST

Follow the procedure “WITH CONSULT-II” above.

SEF058Y

EC-934

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DTC P0122, P0123 TP SENSOR

Wiring Diagram

NBS005D4

TBWT1491E

DTC P0122, P0123 TP SENSOR

EC-935

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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

NBS005D5

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

50

W

Throttle position sensor 1

[Ignition switch: ON]

●

Engine: Stopped

●

Selector lever: D

●

Accelerator pedal: Fully released

More than 0.36V

[Ignition switch: ON]

●

Engine: Stopped

●

Selector lever: D

●

Accelerator pedal: Fully depressed

Less than 4.75V

66

B

Sensor ground
(Throttle position sensor)

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 0V

69

R

Throttle position sensor 2

[Ignition switch: ON]

●

Engine: Stopped

●

Selector lever: D

●

Accelerator pedal: Fully released

Less than 4.75V

[Ignition switch: ON]

●

Engine: Stopped

●

Selector lever: D

●

Accelerator pedal: Fully depressed

More than 0.36V

91

BR

Sensor power supply
(APP sensor 2)

[Ignition switch: ON]

Approximately 5V

1.

Body ground M70

2.

Body ground M16

PBIB2782E

EC-936

[VK45DE]

DTC P0122, P0123 TP SENSOR

2. 

CHECK THROTTLE POSITION SENSOR 2 POWER SUPPLY CIRCUIT-I

1.

Disconnect electric throttle control actuator (1) harness connec-
tor.

–

Illustration shows the view with intake air duct removed.

2.

Turn ignition switch ON.

3.

Check voltage between electric throttle control actuator terminal
1 and ground with CONSULT-II or tester.

OK or NG

OK

>> GO TO 7.

NG

>> GO TO 3.

3. 

CHECK THROTTLE POSITION SENSOR 2 POWER SUPPLY CIRCUIT-II

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check harness continuity between electric throttle control actuator terminal 1 and ECM terminal 47.
Refer to Wiring Diagram.

OK or NG

OK

>> GO TO 4.

NG

>> Repair open circuit.

4. 

CHECK THROTTLE POSITION 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 5.

NG

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

5. 

CHECK APP SENSOR

Refer to 

EC-1349, "Component Inspection"

 .

OK or NG

OK

>> GO TO 11.

NG

>> GO TO 6.

PBIB2690E

Voltage: Approximately 5V

PBIA9580J

Continuity should exist.

ECM terminal

Sensor terminal

Reference Wiring Diagram

47

Electric throttle control actuator terminal 1

EC-934

91

APP sensor terminal 5

EC-1345