2002 NISSAN TERRANO Service Repair Manual

DIAGNOSTIC PROCEDURE
CHECK INPUT SIGNAL.
1. Start engine.
2. Select ªECU INPUT SIGNALSº in
Data Monitor.
3. Read out the value of ªVHCL/S
SE×MTRº while driving.
Check the value changes accord-
ing to driving speed.
-----------------------------------------------------------------------------------------------------------------------OR -----------------------------------------------------------------------------------------------------------------------
1. Start engine.
2. Check voltage between TCM ter-
minalq
26and 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
ENG
Check the following items:
IVehicle speed sensor
and ground circuit for
vehicle speed sensor
Refer to EL section
(ªMETERS AND
GAUGESº).
IHarness for short or
open between TCM and
vehicle speed sensor
(Main harness)
Perform ªSELF-DIAGNOSIS CODE CON-
FIRMATION PROCEDUREº, AT-54.
OK
ENG
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 Ð AT Ð TPS
LHD MODELS
YAT265
TROUBLE DIAGNOSIS FOR THROTTLE POSI SEN
AT-56

LHD MODELS
YAT266
TROUBLE DIAGNOSIS FOR THROTTLE POSI SEN
Wiring Diagram Ð AT Ð TPS (Cont'd)
AT-57

RHD MODELS
YAT267
TROUBLE DIAGNOSIS FOR THROTTLE POSI SEN
Wiring Diagram Ð AT Ð TPS (Cont'd)
AT-58

RHD MODELS
YAT268
TROUBLE DIAGNOSIS FOR THROTTLE POSI SEN
Wiring Diagram Ð AT Ð TPS (Cont'd)
AT-59

Throttle (Accelerator) Position Sensor
DESCRIPTION
The throttle (accelerator) position sensor detects the throttle valve
position and sends a signal to the TCM.
ON BOARD DIAGNOSIS LOGIC
Diagnostic trouble code Malfunction is detected when ...Check items
(Possible cause)
: THROTTLE POSI SEN
TCM receives an excessively low or
high voltage from the sensor.IHarness or connectors
(The sensor circuit is open or
shorted.)
IThrottle (accelerator) position sensor
: 3rd judgement flicker
CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE
Remarks: Specification data are reference values.
Monitor item Condition Specification
Throttle (accelerator) position sensorFully-closed throttle Approximately 0.5V
Fully-open throttle Approximately 4V
SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURE
After the repair, perform the following procedure to confirm the
malfunction is eliminated.
1) Start engine.
2) Select ªSELF-DIAG RESULTSº mode with CONSULT-II.
3) Drive vehicle under the following conditions:
Selector lever in ªDº position, vehicle speed higher than
10 km/h (6 MPH), throttle opening greater than 1/2 of the
full throttle position and driving for more than 3 seconds.
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------OR------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1) Start engine.
2) Drive vehicle under the following conditions:
Selector lever in ªDº position, vehicle speed higher than
10 km/h (6 MPH), throttle opening greater than 1/2 of the
full throttle position and driving for more than 3 seconds.
3) Perform self-diagnosis.
Refer to SELF-DIAGNOSTIC PROCEDURE (Without
CONSULT-II), AT-15.
NAT262
SAT808H
TROUBLE DIAGNOSIS FOR THROTTLE POSI SEN
AT-60

DIAGNOSTIC PROCEDURE
Perform diagnostic test mode II (self-
diagnostic results) for engine control.
Refer to EC section [ªMalfunction Indicator
Lamp (MIL)º, ªON BOARD DIAGNOSTIC
SYSTEM DESCRIPTIONº].
OK
ENG
Check throttle (accelerator)
position sensor circuit for
engine control. Refer to
EC section [ªTROUBLE
DIAGNOSIS FOR ªTHRTL
(ACCEL) POSI SENº].
CHECK INPUT SIGNAL.
1. Turn ignition switch to ªONº posi-
tion.
(Do not start engine.)
2. Select ªECU INPUT SIGNALSº in
Data Monitor.
3. Read out the value of ªTHRTL
POS SENº.
Voltage:
Fully-closed throttle:
Approximately 0.5V
Fully-open throttle:
Approximately 4V
-----------------------------------------------------------------------------------------------------------------------OR -----------------------------------------------------------------------------------------------------------------------
1. Turn ignition switch to ªONº posi-
tion. (Do not start engine.)
2. Check voltage between TCM ter-
minalsq
32andq42while accelerator
pedal is depressed slowly.
Voltage:
Fully-closed throttle valve:
Approximately 0.4V
Fully-open throttle valve:
Approximately 4V
(Voltage rises gradually in
response to throttle position)
OK
ENG
Check harness for short or
open between ECM and
TCM regarding throttle
(accelerator) position sen-
sor circuit. (Main harness)
CHECK THROTTLE (ACCELERATOR)
POSITION SWITCH.
Refer to ªCHECK THROTTLE (ACCEL-
ERATOR) POSITION SWITCHº, AT-88.
OK
ENG
Repair or replace dam-
aged parts.
Perform ªSELF-DIAGNOSIS CODE CON-
FIRMATION PROCEDUREº, AT-60.
OK
ENG
1. Perform TCM input/
output signal inspection.
2. If NG, recheck TCM pin
terminals for damage or
loose connection with
harness connector.
INSPECTION END
YAT299
H
H
H
H
TROUBLE DIAGNOSIS FOR THROTTLE POSI SEN
Throttle (Accelerator) Position Sensor (Cont'd)
AT-61

Wiring Diagram Ð AT Ð SSV/A
YAT280
TROUBLE DIAGNOSIS FOR SHIFT SOLENOID/V A
AT-62