Nissan Frontier D22. Manual - part 353

DTC P1491 VACUUM CUT VALVE BYPASS VALVE

EC-515

[KA24DE]

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12. 

CHECK EVAP CANISTER VENT CONTROL VALVE-II

 With CONSULT-II

1.

Turn ignition switch ON.

2.

Perform “VENT CONTROL/V” in “ACTIVE TEST” mode.

3.

Check air passage continuity and operation delay time.

 Without CONSULT-II

Check air passage continuity and operation delay time under the fol-
lowing condition.

Operation takes less than 1 second.

OK or NG

OK

>> GO TO 14.

NG

>> GO TO 13.

13. 

CHECK EVAP CANISTER VENT CONTROL VALVE-III

1.

Clean the air passage (Portion A  to B ) of EVAP canister vent control valve using an air blower.

2.

Perform Test No. 12 again.

OK or NG

OK

>> GO TO 14.

NG

>> Replace EVAP canister vent control valve.

14. 

CHECK REFUELING CONTROL VALVE

Refer to 

EC-570, "ON BOARD REFUELING VAPOR RECOVERY (ORVR)"

 .

OK or NG

OK

>> GO TO 15.

NG

>> Repair or replace hoses.

15. 

CHECK REFUELING EVAP VAPOR CUT VALVE

Refer to 

EC-570, "ON BOARD REFUELING VAPOR RECOVERY (ORVR)"

 .

OK or NG

OK

>> GO TO 16.

NG

>> Repair or replace hoses.

Condition

Air passage continuity between 

A and B

12V direct current supply between 
terminals 1 and 2

No

OFF

Yes

SEF803Y

BBIA0309E

EC-516

[KA24DE]

DTC P1491 VACUUM CUT VALVE BYPASS VALVE

16. 

CHECK INTERMITTENT INCIDENT

Refer to 

EC-120, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

>> INSPECTION END

DTC P1706 PNP SWITCH

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EC

DTC P1706 PNP SWITCH

PFP:32006

Component Description

UBS00DCE

When the gear position is N or P, park/neutral position (PNP) switch
is ON.
ECM detects the park/neutral position when continuity with ground
exists.

CONSULT-II Reference Value in Data Monitor Mode

UBS00DCF

Specification data are reference values.

On Board Diagnosis Logic

UBS00DCG

LEC096A

MONITOR ITEM

CONDITION

SPECIFICATION

P/N POSI SW

●

Ignition switch: ON

Shift lever:
P or N (A/T model)
Neutral (M/T model)

ON

Shift lever: Except above

OFF

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1706

Park/neutral position 
switch

The signal of the park/neutral position (PNP) 
switch is not changed in the process of engine 
starting and driving.

●

Harness or connectors
[The park/neutral position (PNP) switch 
circuit is open or shorted.]

●

Park/neutral position (PNP) switch

EC-518

[KA24DE]

DTC P1706 PNP SWITCH

DTC Confirmation Procedure

UBS00DCH

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.

Turn ignition switch ON.

2.

Select  “P/N POSI SW” in “DATA MONITOR” mode with CON-
SULT-II. Then check the “P/N POSI SW” signal under the follow-
ing conditions.

If NG, go to 

EC-520, "Diagnostic Procedure For M/T Models"

  or

EC-521, "Diagnostic Procedure For A/T Models"

 .

If OK, go to following step.

3.

Select “DATA MONITOR” mode with CONSULT-II.

4.

Start engine and warm it up to normal operating temperature.

5.

Maintain the following conditions for at least 60 consecutive seconds.

6.

If 1st trip DTC is detected, go to 

EC-520, "Diagnostic Procedure For M/T Models"

  or 

EC-521, "Diagnostic

Procedure For A/T Models"

 .

Overall Function Check

UBS00DCI

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

 WITH GST

1.

Turn ignition switch ON.

2.

Check voltage between ECM terminal 22 (PNP switch signal)
and body ground under the following conditions.

3.

If NG, go to 

EC-520, "Diagnostic Procedure For M/T Models"

  or

EC-521, "Diagnostic Procedure For A/T Models"

 .

Position (Selector lever)

Known-good signal

N or P position

ON

Except the above position

OFF

ENG SPEED

1,400 - 6,375 rpm

COOLAN TEMP/S

More than 70

°C (158°F)

B/FUEL SCHDL

3.5 - 31.8 msec

VHCL SPEED SE

More than 64 km/h (More than 40 MPH)

Selector lever

Suitable position

SEF213Y

Condition (Gear position)

Voltage (V) (Known-good data)

N or P position

Approx. 0

Except above position

Approx. 5

SEF964N