Nissan Frontier D22. Manual - part 472

DTC P0505 ISC SYSTEM

EC-991

[VG33E]

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EC

Removal and Installation

UBS00DMI

IACV-AAC VALVE

Refer to 

EM-80, "OUTER COMPONENT PARTS"

 .

EC-992

[VG33E]

DTC P0510 CLOSED TP SWITCH

DTC P0510 CLOSED TP SWITCH

PFP:22620

Component Description

UBS00DMJ

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 volume
control solenoid valve when the throttle position sensor is malfunc-
tioning.

CONSULT-II Reference Value in Data Monitor Mode

UBS00DMK

Specification data are reference values.

On Board Diagnosis Logic

UBS00DML

DTC Confirmation Procedure

UBS00DMM

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.

Turn ignition switch OFF, wait at least 10 seconds and then start engine.

3.

Select “CLSD THL/P SW” in “DATA MONITOR” mode.

4.

Check the signal under the following conditions.

If the result is NG, go to 

EC-995, "Diagnostic Procedure"

 .

If OK, go to following step.

SEF505V

MONITOR ITEM

CONDITION

SPECIFICATION

CLSD THL/P SW

●

Engine: After warming up, idle the 
engine

Throttle valve: Idle position

ON

Throttle valve: Slightly open

OFF

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0510

Closed throttle position 
switch

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 
open or shorted)

●

Closed throttle position switch

●

Throttle position sensor

Condition

Signal indication

Throttle valve: Idle position

ON

Throttle valve: Slightly open

OFF

SEF197Y

DTC P0510 CLOSED TP SWITCH

EC-993

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EC

5.

Select “DATA MONITOR” mode with CONSULT-II.

6.

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

7.

If 1st trip DTC is detected, go to 

EC-995, "Diagnostic Procedure"

.

Overall Function Check

UBS00DMN

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-995, "Diagnostic Procedure"

 .

THRTL POS SEN

More than 2.5V

VHCL SPEED SE

More than 5 km/h (3 MPH)

Selector lever

Suitable position

Driving location

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

SEF198Y

At idle

: Battery voltage

At 2,000 rpm

: Approximately 0V

SEF872U

EC-994

[VG33E]

DTC P0510 CLOSED TP SWITCH

Wiring Diagram

UBS00DMO

BBWA0490E