Nissan Frontier D22. Manual - part 89

DTC P1705 THROTTLE POSITION SENSOR

AT-325

[RE4R01A]

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Diagnostic Procedure

ECS007NL

1. 

CHECK DTC WITH ECM

Perform diagnostic test mode II (self-diagnostic results) for engine control. Refer to 

EC-634

  (VG33E only) or

EC-1235

  (VG33ER only), “Malfunction Indicator Lamp (MIL)”.

OK or NG

OK

>> GO TO 2.

NG

>> Check throttle position sensor circuit for engine control. Refer to 

EC-743, "DTC P0121 TP SEN-

SOR"

  (VG33E only) or 

EC-1350, "DTC P0121 TP SENSOR"

  (VG33ER only).

2. 

CHECK INPUT SIGNAL

 With CONSULT-II

1.

Turn ignition switch to ON position.
(Do not start engine.)

2.

Select “TCM INPUT SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-II.

3.

Read out the value of “THRTL POS SEN”.

 Without CONSULT-II

1.

Turn ignition switch to ON position.
(Do not start engine.)

2.

Check voltage between TCM terminals 41 and 42 while acceler-
ator pedal is depressed slowly.

OK or NG

OK (With CONSULT-II)>>GO TO 3.
OK (Without CONSULT-II)>>GO TO 4.
NG

>> Check harness for short or open between ECM and TCM regarding throttle position sensor circuit.

(Main harness)

Voltage

Fully-closed throttle

: Approximately 0.5V

Fully-open throttle

: Approximately 4V

Voltage

Fully-closed throttle 
valve

: Approximately 0.5V

Fully-open throttle 
valve

: Approximately 4V

(Voltage rises gradually 
in response to throttle 
position.)

SAT614J

AAT474A

AT-326

[RE4R01A]

DTC P1705 THROTTLE POSITION SENSOR

3. 

CHECK THROTTLE POSITION SWITCH CIRCUIT (WITH CONSULT-II)

 With CONSULT-II

1.

Turn ignition switch to ON position.
(Do not start engine.)

2.

Select “TCM INPUT SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-II.

3.

Read out “CLOSED THL/SW” and “W/O THRL/P-SW” depressing and releasing accelerator pedal.
Check the signal of throttle position switch is indicated properly.

OK or NG

OK

>> GO TO 5.

NG

>> Check the following items:

●

Throttle position switch
Refer to 

AT-328, "THROTTLE POSITION SWITCH"

 .

●

Harness for short or open between ignition switch and throttle position switch (Main harness)

●

Harness for short or open between throttle position switch and TCM (Main harness)

SAT646J

MTBL0011

DTC P1705 THROTTLE POSITION SENSOR

AT-327

[RE4R01A]

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4. 

CHECK THROTTLE POSITION SWITCH CIRCUIT (WITHOUT CONSULT-II)

 Without CONSULT-II

1.

Turn ignition switch to ON position.
(Do not start engine.)

2.

Check voltage between TCM connector M77 terminals 16 (BR/W), 17 (OR/B) and ground while depress-
ing, and releasing accelerator pedal slowly. (after warming up engine)

OK or NG

OK

>> GO TO 5.

NG

>> Check the following items:

●

Throttle position switch
Refer to 

AT-328, "THROTTLE POSITION SWITCH"

 .

●

Harness for short or open between ignition switch and throttle position switch (Main harness)

●

Harness for short or open between throttle position switch and TCM (Main harness)

5. 

CHECK DTC

Perform Diagnostic Trouble Code (DTC) confirmation procedure. Refer to 

AT-323, "DIAGNOSTIC TROUBLE

CODE (DTC) CONFIRMATION PROCEDURE"

 .

OK or NG

OK

>> INSPECTION END

NG

>> 1. Perform TCM input/output signal inspection.

2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.

WAT337

AT-328

[RE4R01A]

DTC P1705 THROTTLE POSITION SENSOR

Component Inspection

ECS007NM

THROTTLE POSITION SWITCH
Closed Throttle Position Switch (Idle position)

●

Check continuity between terminals 4 and 5.

●

To adjust closed throttle position switch, refer to 

EC-646, "Basic

Inspection"

  (VG33E only) or 

EC-1247, "Basic Inspection"

(VG33ER only).

Wide Open Throttle Position Switch

●

Check continuity between terminals 5 and 6.

Accelerator pedal condition

Continuity

Released

Yes

Depressed

No

AAT498A

Accelerator pedal condition

Continuity

Released

No

Depressed

Yes

AAT499A