Nissan Frontier D22. Manual - part 326

DTC P0510 CTP SWITCH

EC-407

[KA24DE]

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EC

DTC P0510 CTP SWITCH

PFP:22620

Component Description

UBS00D9E

A closed throttle position switch and wide open throttle position
switch are built into the throttle position sensor unit. The wide open
throttle position switch is used only for A/T control.
When the throttle valve is in the closed position, the closed throttle
position switch sends a voltage signal to the ECM. The ECM only
uses this signal to open or close the EVAP canister purge control
valve when the throttle position sensor is malfunctioning.

On Board Diagnosis Logic

UBS00D9F

DTC Confirmation Procedure

UBS00D9G

CAUTION:

Always drive vehicle at a safe speed.

NOTE:
If “DTC Confirmation Procedure” has been previously conducted, always turn ignition switch OFF and wait at
least 5 seconds before conducting the next test.

 WITH CONSULT-II

1.

Start engine and warm it up to normal operating temperature.

2.

Select  “CLSD THL/P SW” in “DATA MONITOR” mode with
CONSULT-II and check the indication under the following condi-
tions.

If the result is NG, go to 

EC-410, "Diagnostic Procedure"

 .

If OK, go to following step.

3.

Drive the vehicle for at least 5 consecutive seconds under the
following condition.

4.

If 1st trip DTC is detected, go to 

EC-410, "Diagnostic Procedure"

.

SEF505V

DTC No.

Trouble Diagnosis Name

DTC Detecting Condition

Possible Cause

P0510

Closed throttle position switch 
circuit

Battery voltage from the closed throttle 
position switch is sent to ECM with the 
throttle valve opened.

●

Harness or connectors
(The closed throttle position switch circuit 
is shorted.)

●

Closed throttle position switch

●

Throttle position sensor

Condition

Signal indication

Throttle valve: Idle position

ON

Throttle valve: Slightly open

OFF

SEF197Y

THRTL POS SEN

More than 2.5V

VHCL SPEED SE

More than 4 km/h (2 MPH)

Selector lever

Suitable position

Driving pattern

Driving vehicle uphill (Increased engine load) will 
help maintain the driving conditions required for 
this test.

SEF198Y

EC-408

[KA24DE]

DTC P0510 CTP SWITCH

Overall Function Check

UBS00D9H

Use this procedure to check the overall function of the closed throttle position switch circuit. During this check,
a 1st trip DTC might not be confirmed.

 WITH GST

1.

Start engine and warm it up to normal operating temperature.

2.

Check the voltage between ECM terminal 28 (Closed throttle
position switch signal) and ground under the following condi-
tions.

3.

If NG, go to 

EC-410, "Diagnostic Procedure"

 .

Condition

Voltage

At idle

Battery voltage

At 2,000 rpm

Approximately 0 - 1V

SEF422Q

DTC P0510 CTP SWITCH

EC-409

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EC

Wiring Diagram

UBS00D9I

BBWA0450E

EC-410

[KA24DE]

DTC P0510 CTP SWITCH

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

UBS00D9J

1. 

CHECK POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect throttle position switch harness connector.

3.

Turn ignition switch ON.

4.

Check voltage between terminal 5 and engine ground with CON-
SULT-II or tester.

OK or NG

OK

>> GO TO 3.

NG

>> GO TO 2.

2. 

DETECT MALFUNCTIONING PART

Check the following.

●

Harness connectors M59, F27

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Fuse block (J/B) connector M27

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10A fuse

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Harness for open or short between throttle position switch and fuse

>> Repair harness or connectors.

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

28

BR/W

Throttle position switch 
(Closed position)

[Ignition switch: ON]

●

Warm-up condition

●

 Accelerator pedal is released

BATTERY VOLTAGE
(11 - 14V)

[Ignition switch: ON]

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Accelerator pedal is depressed

Approximately 0V

SEF158S

Voltage

: Battery voltage

SEF715U