Nissan Terrano r20e. Instruction — part 14
RHD MODELS
YAT264
TROUBLE DIAGNOSIS FOR VHCL SPEED SEN
⋅
MTR
Wiring Diagram — AT — VSSMTR (Cont’d)
AT-53
Vehicle Speed Sensor
⋅
MTR
DESCRIPTION
The vehicle speed sensor
⋅
MTR is built into the speedometer
assembly. The sensor functions as an auxiliary device to the revo-
lution sensor when it is malfunctioning. The TCM will then use a
signal sent from the vehicle speed sensor
⋅
MTR.
ON BOARD DIAGNOSIS LOGIC
Diagnostic trouble code
Malfunction is detected when ...
Check items
(Possible cause)
: VHCL SPEED SEN
⋅
MTR
TCM does not receive the proper volt-
age signal from the sensor.
I
Harness or connectors
(The sensor circuit is open or
shorted.)
I
Vehicle speed sensor
: 2nd 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 and vehicle speed higher
than 20 km/h (12 MPH).
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ OR ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1)
Start engine.
2)
Drive vehicle under the following conditions:
Selector lever in “D” position and vehicle speed higher
than 20 km/h (12 MPH).
3)
Perform self-diagnosis.
Refer to SELF-DIAGNOSTIC PROCEDURE (Without
CONSULT-II), AT-15.
NAT238
SAT807H
TROUBLE DIAGNOSIS FOR VHCL SPEED SEN
⋅
MTR
AT-54
DIAGNOSTIC PROCEDURE
CHECK INPUT SIGNAL.
1. Start engine.
2. Select “ECU INPUT SIGNALS” in
Data Monitor.
3. Read out the value of “VHCL/S
SE
⋅
MTR” while driving.
Check the value changes accord-
ing to driving speed.
----------------------------------------------------------------------------------------------------------------------- OR -----------------------------------------------------------------------------------------------------------------------
1. Start engine.
2. Check voltage between TCM ter-
minal
q
26
and ground while driving
at 2 to 3 km/h (1 to 2 MPH) for 1
m (3 ft) or more.
Voltage:
Voltage varies between less
than 1V and more than 4.5V.
OK
E
NG
Check the following items:
I
Vehicle speed sensor
and ground circuit for
vehicle speed sensor
Refer to EL section
(“METERS AND
GAUGES”).
I
Harness for short or
open between TCM and
vehicle speed sensor
(Main harness)
Perform “SELF-DIAGNOSIS CODE CON-
FIRMATION PROCEDURE”, AT-54.
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
YAT298
H
H
TROUBLE DIAGNOSIS FOR VHCL SPEED SEN
⋅
MTR
Vehicle Speed Sensor
⋅
MTR (Cont’d)
AT-55
Wiring Diagram — AT — TPS
LHD MODELS
YAT265
TROUBLE DIAGNOSIS FOR THROTTLE POSI SEN
AT-56
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