Nissan Terrano model r20 series 2004. Manual - part 217

Vehicle Speed Sensor

⋅

A/T (Revolution sensor)

DESCRIPTION

The revolution sensor detects the revolution of the out put shaft
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

Diagnostic trouble code

Malfunction is detected when ...

Check items

(Possible cause)

:

VHCL SPEED SEN

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A/T

TCM does not receive the proper volt-
age signal from the sensor.

I

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

I

Revolution sensor

:

1st judgement flicker

SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURE

After the repair, perform the following procedure to confirm the
malfunction is eliminated.

1)

Start engine.

2)

Select “SELF-DIAG RESULTS” mode with CONSULT-II.

3)

Drive vehicle under the following conditions:
Selector lever in “D” position, vehicle speed higher than
30 km/h (19 MPH), throttle opening greater than 1/8 of
the full throttle position and driving for more than 5 sec-
onds.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ OR ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

1)

Start engine.

2)

Drive vehicle under the following conditions:
Selector lever in “D” position, vehicle speed higher than
30 km/h (19 MPH), throttle opening greater than 1/8 of
the full throttle position and driving for more than 5 sec-
onds.

3)

Perform self-diagnosis.
Refer to SELF-DIAGNOSTIC PROCEDURE (Without
CONSULT-II), AT-15.

YAT336

SAT252K

SAT806H

TROUBLE DIAGNOSIS FOR VHCL SPEED SEN

⋅

A/T

AT-52

DIAGNOSTIC PROCEDURE

CHECK REVOLUTION SENSOR.
Refer to “COMPONENT INSPECTION”
below.

OK

E

NG

Repair or replace revolu-
tion sensor.

CHECK INPUT SIGNAL.

1. Start engine.

2. Select “ECU INPUT SIGNALS” in

Data Monitor.

3. Read out the value of “VHCL/S

SE

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A/T” while driving.

Check the value changes accord-
ing to driving speed.

----------------------------------------------------------------------------------------------------------------------- OR -----------------------------------------------------------------------------------------------------------------------

1. Start engine.

2. Check voltage between TCM ter-

minal

q

42

and ground while driving.

(Measure in AC range.)
Voltage:

At 0 km/h (0 MPH):

0V

At 30 km/h (19 MPH):

1V or more

(Voltage rises gradually in
response to vehicle speed.)

OK

E

NG

Check the following items:

I

Harness for short or
open between TCM and
revolution sensor (Main
harness)

I

Harness for short or
open between revolution
sensor and ECM (Main
harness)

I

Ground circuit for ECM
Refer to EC section
(“TROUBLE DIAGNOSIS
FOR POWER SUPPLY”).

Perform “SELF-DIAGNOSIS CODE CON-
FIRMATION PROCEDURE”.

OK

E

NG

1. Perform TCM input/

output signal inspection.

2. If NG, recheck TCM pin

terminals for damage or
loose connection with
harness connector.

INSPECTION END

COMPONENT INSPECTION

Revolution sensor

I

For removal, refer to AT-119.

I

Check resistance between terminals

q

1

,

q

2

and

q

3

.

Terminal No.

Resistance

q

1

q

2

500 - 650

Ω

q

2

q

3

No continuity

q

1

q

3

No continuity

YAT297

NAT218

H

H

H

TROUBLE DIAGNOSIS FOR VHCL SPEED SEN

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A/T

Vehicle Speed Sensor

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A/T (Revolution sensor)

(Cont’d)

AT-53

Wiring Diagram — AT — VSSMTR

LHD MODELS

YAT263

TROUBLE DIAGNOSIS FOR VHCL SPEED SEN

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MTR

AT-54

RHD MODELS

YAT264

TROUBLE DIAGNOSIS FOR VHCL SPEED SEN

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MTR

Wiring Diagram — AT — VSSMTR (Cont’d)

AT-55