Infiniti QX56 (Z62). Manual - part 1307

 

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Infiniti QX56 (Z62). Manual - part 1307

 

 

P1705 TP SENSOR

TM-137

< DTC/CIRCUIT DIAGNOSIS >

[7AT: RE7R01B]

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P1705 TP SENSOR

DTC Logic

INFOID:0000000006226852

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If “DTC CONFIRMATION PROCEDURE” is previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before performing the next test.

>> GO TO 2.

2.

CHECK DTC DETECTION

 With CONSULT-III

1.

Start the engine.

2.

Select “SLCT LVR POSI” and “VHCL/S SE-A/T” in “Data Monitor” in “TRANSMISSION”.

3.

Drive vehicle and maintain the following conditions for 5 seconds or more.

4.

Perform “Self Diagnostic Results” in “TRANSMISSION”.

Is “P1705” detected?

YES

>> Go to 

TM-137, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000006226853

1.

CHECK DTC OF ECM 

 With CONSULT-III

1.

Turn ignition switch ON.

2.

Perform “Self Diagnostic Results” in “ENGINE”.

Is any DTC detected?

YES

>> Check DTC detected item. Refer to 

EC-98, "DTC Index"

.

NO

>> GO TO 2.

2.

CHECK DTC OF TCM

 With CONSULT-III

Perform “Self Diagnostic Results” in “TRANSMISSION”.
Is any DTC other than “P1705” detected?

YES

>> Check DTC detected item. Refer to 

TM-78, "DTC Index"

.

NO

>> GO TO 3.

3.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-40, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace the control valve & TCM. Refer to 

TM-182, "Exploded View"

.

NO

>> Repair or replace damaged parts.

DTC

Trouble diagnosis name

DTC is detected if...

Possible cause

P1705

Accelerator Pedal Position Sen-
sor Signal Circuit

TCM detects the difference be-
tween two accelerator pedal po-
sition signals received from 
ECM via CAN communication.

Harness or connectors
(Sensor circuit is open or short-
ed.)

SLCT LVR POSI

: D

VHCL/S SE-A/T

: 5 km/h (3 MPH) or more

TM-138

< DTC/CIRCUIT DIAGNOSIS >

[7AT: RE7R01B]

P1721 VEHICLE SPEED SIGNAL

P1721 VEHICLE SPEED SIGNAL

Description

INFOID:0000000006226854

The vehicle speed signal is transmitted from combination meter to TCM via CAN communication line. The sig-
nal functions as an auxiliary device to the output speed sensor when it is malfunctioning. The TCM will then
use the vehicle speed signal.

DTC Logic

INFOID:0000000006226855

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

CAUTION:

• Always drive vehicle at a safe speed.
• Be careful not to rev engine into the red zone on the tachometer.

1.

PRECONDITIONING

If “DTC CONFIRMATION PROCEDURE” is previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before performing the next test.

>> GO TO 2.

2.

CHECK DTC DETECTION

 With CONSULT-III

1.

Start the engine.

2.

Select “VHCL/S SE-A/T” in “Data Monitor” in “TRANSMISSION”.

3.

Drive vehicle and maintain the following conditions for 60 seconds or more.

4.

Perform “Self Diagnostic Results” in “TRANSMISSION”.

Is “P1721” detected?

YES

>> Go to 

TM-139, "Diagnosis Procedure"

.

NO

>> INSPECTION END

DTC

Trouble diagnosis name

DTC is detected if...

Possible cause

P1721

Vehicle Speed Signal Circuit

• The vehicle speed transmit-

ted from the combination 
meter to TCM is 5 km/h 
(3MPH) or less when the ve-
hicle speed detected by the 
output speed sensor is 20 
km/h or more. (Only when 
starts after the ignition switch 
is turned ON.)

• The vehicle speed detected 

by the output speed sensor 
does not decrease despite 
the 36 km/h (23 MPH) or 
more of deceleration in vehi-
cle speed received from the 
combination meter when the 
vehicle speed transmitted 
from the combination meter 
to TCM is 36 km/h (23 MPH) 
or more and the vehicle 
speed detected by the output 
speed sensor is 24 (15 MPH) 
or more.

Harness or connectors
(Sensor circuit is open or short-
ed.)

VHCL/S SE-A/T

: 40 km/h (25 MPH) or more

P1721 VEHICLE SPEED SIGNAL

TM-139

< DTC/CIRCUIT DIAGNOSIS >

[7AT: RE7R01B]

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Diagnosis Procedure

INFOID:0000000006226856

1.

CHECK DTC OF UNIFIED METER AND A/C AMP.

 With CONSULT-III

Perform “Self Diagnostic Results” in “METER/M&A”.
Is any DTC detected?

YES

>> Check DTC detected item. Refer to 

MWI-43, "DTC Index"

.

NO

>> GO TO 2.

2.

CHECK DTC OF TCM

 With CONSULT-III

Perform “Self Diagnostic Results” in “TRANSMISSION”.

Is any DTC other than “P1721” detected?

YES

>> Check DTC detected item. Refer to 

TM-78, "DTC Index"

.

NO

>> GO TO 3.

3.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-40, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace the control valve & TCM. Refer to 

TM-182, "Exploded View"

.

NO

>> Repair or replace damaged parts.

TM-140

< DTC/CIRCUIT DIAGNOSIS >

[7AT: RE7R01B]

P1730 INTERLOCK

P1730 INTERLOCK

Description

INFOID:0000000006226857

Fail-safe function to detect interlock conditions.

DTC Logic

INFOID:0000000006226858

DTC DETECTION LOGIC

NOTE:
When the vehicle is driven fixed in 2GR, an input speed sensor malfunction is displayed, but this is
not an input speed sensor malfunction.

DTC CONFIRMATION PROCEDURE

CAUTION:

• “

TM-141, "Diagnosis Procedure"

” must be performed before starting “DTC CONFIRMATION PROCE-

DURE”.

• Never perform “DTC CONFIRMATION PROCEDURE” before completing the repair, which may cause

secondary malfunction.

• Always drive vehicle at a safe speed.

1.

PRECONDITIONING

If “DTC CONFIRMATION PROCEDURE” is previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before performing the next test.

>> GO TO 2.

2.

CHECK DTC DETECTION

 With CONSULT-III

1.

Start the engine.

2.

Select “SLCT LVR POSI” and “GEAR” in “Data Monitor” in “TRANSMISSION”.

3.

Drive vehicle the following condition.

4.

Perform “Self Diagnostic Results” in “TRANSMISSION”.

 With GST

Follow the procedure “With CONSULT-III”.

Is “P1730” detected?

YES

>> Go to 

TM-141, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Judgment of Interlock

INFOID:0000000006226859

Refer to 

TM-74, "Fail-Safe"

.

DTC

Trouble diagnosis name

DTC is detected if...

Possible cause

P1730

Interlock

The output speed sensor de-
tects the deceleration of 12 km/
h (7 MPH) or more for 1 sec-
ond.

• Harness or connectors

(Solenoid valve circuit is open 
or shorted.)

• Input clutch solenoid valve
• Direct clutch solenoid valve
• High and low reverse clutch 

solenoid valve

• Front brake solenoid valve
• Low brake solenoid valve
• 2346 brake solenoid valve
• Anti-interlock solenoid valve
• Each clutch
• Hydraulic control circuit

SLCT LVR POSI

: D

GEAR

: 1st through 7th

 

 

 

 

 

 

 

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