Infiniti F50. Manual — part 56

DTC P0705 PARK/NEUTRAL POSITION SWITCH

AT-109

D

E

F

G

H

I

J

K

L

M

A

B

AT

6.

PERFORM TCM INSPECTION

1.

Perform TCM input/output signal inspection.

2.

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

OK or NG

OK

>> INSPECTION END

NG

>> Repair or replace damaged parts.

Component Inspection

ECS00843

PNP SWITCH

1.

Selector lever to various positions to check the continuity
between terminals on the PNP switch and ground.

2.

If NG, check the continuity with the control linkage disconnected. (Refer to Step 1 above.)

3.

If OK with the control linkage disconnected, adjust the control linkage. Refer to

AT-282, "Adjustment of A/

T Position"

.

4.

If NG even when the control linkage is disconnected, replace the control valve assembly. Refer to

AT-289,

"Control Valve Assembly"

.

PNP SW

Shift position

Connector No.

Terminal No.

(Wire color)

Continuity

SW 1

P

F302

1 (G/W) - Ground

No

SW 2

2 (W/L) - Ground

SW 3

D

3 (W/Y) - Ground

SW 4

4 (GY) - Ground

Yes

SW 3 Monitor

P, R, N, D

3 (W/Y) - 5 (W/R)

SCIA3062E

AT-110

DTC P0720 VEHICLE SPEED SENSOR A/T (REVOLUTION SENSOR)

DTC P0720 VEHICLE SPEED SENSOR A/T (REVOLUTION SENSOR)

PFP:32702

Description

ECS00844

The revolution sensor detects the revolution of the idler gear parking pawl lock gear and emits a pulse signal.
The pulse signal is sent to the TCM which converts it into vehicle speed.

On Board Diagnosis Logic

ECS00845

●

This is an OBD-II self-diagnostic item.

●

Diagnostic trouble code “VEH SPD SEN/CIR AT” with CONSULT-II or P0720 without CONSULT-II is
detected under the following conditions.

–

When TCM does not receive the proper voltage signal from the sensor.

–

After ignition switch is turned “ON”, irregular signal input from vehicle speed sensor MTR before the vehi-
cle starts moving.

Possible Cause

ECS00846

●

Harness or connectors
(The sensor circuit is open or shorted.)

●

Revolution sensor

●

Vehicle speed sensor MTR

DTC Confirmation Procedure

ECS00847

CAUTION:

●

Always drive vehicle at a safe speed.

●

Be careful not to rev engine into the red zone on the tachometer.

NOTE:
If “DTC Confirmation Procedure” has been previously conducted, always turn ignition switch “OFF”
and wait at least 10 seconds before conducting the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.

WITH CONSULT-II

1.

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

2.

Select “DATA MONITOR” mode for “A/T” with CONSULT-II.

3.

Check for an increase of “VHCL/S SE·A/T” value in response to
“VHCL/S SE·MTR” value.
If the check result is NG, go to

AT-112, "Diagnostic Procedure"

.

If the check result is OK, go to following step.

4.

Select “DATA MONITOR” mode for “ENGINE” with CONSULT-II.

5.

Start engine and maintain the following conditions for at least 5
consecutive seconds.
VHCL SPEED SE: 30 km/h (19 MPH) or more
THRTL POS SEN: More than 1.0/8
Selector lever: “D” position
If the check result is NG, go to

AT-112, "Diagnostic Procedure"

.

If the check result is OK, go to following step.

6.

Maintain the following conditions for at least 5 consecutive seconds.
ENGINE SPEED: 3,500 rpm or more
THRTL POS SEN: More than 1.0/8
Selector lever: “D” position
If the check result is NG, go to

AT-112, "Diagnostic Procedure"

.

WITH GST

Follow the procedure “With CONSULT-II”.

SAT014K

DTC P0720 VEHICLE SPEED SENSOR A/T (REVOLUTION SENSOR)

AT-111

D

E

F

G

H

I

J

K

L

M

A

B

AT

Wiring Diagram — AT — VSSA/T

ECS00848

TCM terminals and data are reference value. Measured between each terminal and ground.

TCWM0004E

Terminal

No.

Wire

color

Item

Condition

Data (Approx.)

12

Y/R

Power supply
(out)

IGN ON

–

Battery voltage

IGN OFF

–

0V

27

Y/B

Vehicle speed
sensor A/T (revo-
lution sensor)

When

vehicle
cruises

When moving at 20 km/h (12MPH), use the CONSULT-II
pulse frequency measuring function.

CAUTION:

Connect the data link connector to the vehicle-side
diagnosis connector.

185 (Hz)

AT-112

DTC P0720 VEHICLE SPEED SENSOR A/T (REVOLUTION SENSOR)

Diagnostic Procedure

ECS00849

1.

CHECK INPUT SIGNALS

With CONSULT-II

1.

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

2.

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

3.

Start the engine.

4.

Read out the value of “VHCL/S SE·A/T” while driving.
Check the value changes according to driving speed.

With GST

Follow the procedure “With CONSULT-II”.
OK or NG

OK

>> GO TO 6.

NG

>> GO TO 3.

2.

CHECK REVOLUTION SENSOR (WITH CONSULT-II)

With CONSULT-II

1.

Start the engine.

2.

Check the pulse when vehicle cruises.

OK or NG

OK

>> GO TO 6.

NG

>> GO TO 3.

PCIA0033E

Condition

Connector

No.

Terminal No.

(Wire color)

Data

(Approx.)

When moving at 20 km/h (12 MPH), use
the CONSULT-II pulse frequency mea-
suring function.

CAUTION:

Connect the data link connector to the
vehicle-side diagnosis connector.

F104

27 (Y/B)

185 (Hz)

PCIA0018E