2000 NISSAN PATROL Electronic Repair Manual

Terminal
No.Wire color Item ConditionJudgement
standard (Approx.)
34 PPNP ªDº position
switch
When setting selector lever to
ªDº position.Battery voltage
When setting selector lever to
other positions.0V
35 YPNP ªRº position
switchWhen setting selector lever to
ªRº position.Battery voltage
When setting selector lever to
other positions.0V
36 WPNP ªNº or ªPº
position switchWhen setting selector lever to
ªNº or ªPº position.Battery voltage
When setting selector lever to
other positions.0V
37 Ð Ð Ð Ð
38 Ð Ð Ð Ð
39 Y/BEngine speed sig-
nal
Refer to EC section.
40 L/ORVehicle speed
sensor
When moving vehicle at 2 to 3
km/h (1 to 2 MPH) for1m(3ft)
or more.Voltage varies
between less than 0V
and more than 4.5V.
41 B/WAccelerator posi-
tion sensor
When depressing accelerator
pedal slowly after warming up
engine.
(Voltage rises gradually in
response to throttle position.)Fully-closed throttle:
0.5 - 0.7V
Fully-open throttle:
4V
42 BAccelerator posi-
tion sensor
(Ground)Ð0V
43 W/GA/T mode switch
(ªSPORTº)When setting A/T mode switch in
ªSPORTº position.Battery voltage
When setting A/T mode switch in
other positions.0V
44 Y/RA/T mode switch
(ª
º)When setting A/T mode switch in
ª
º position.Battery voltage
When setting A/T mode switch in
other positions.0V
45 Ð Ð Ð Ð
46 Ð Ð Ð Ð
47 RA/T fluid tempera-
ture sensorWhen ATF temperature is 20ÉC
(68ÉF).1.5V
When ATF temperature is 80ÉC
(176ÉF).0.5V
48 B Ground Ð 0V
TROUBLE DIAGNOSIS Ð General Description
TCM Terminals and Reference Value (Cont'd)
AT-1063

Vehicle Speed SensorzA/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 sig-
nal 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 SENzA/T
TCM does not receive the proper volt-
age signal from the sensor.+Harness or connectors
(The sensor circuit is open or
shorted.)
+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 ªSELF-DIAG RESULTSº mode for A/T with
CONSULT-II.
3) Drive vehicle under the following conditions:
Selector lever in ªDº 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 seconds.
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------OR-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1) Start engine.
2) Drive vehicle under the following conditions:
Selector lever in ªDº 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 seconds.
3) Perform self-diagnosis.
Refer to SELF-DIAGNOSTIC PROCEDURE (Without
CONSULT-II), AT-1029.
SAT218JA
SAT014K
SAT806H
TROUBLE DIAGNOSIS FOR VHCL SPEED SENzA/T
AT-1064

DIAGNOSTIC PROCEDURE
CHECK REVOLUTION SENSOR.
Refer to ªCOMPONENT INSPECTIONº
below.
OK
cNG
Repair or replace revolu-
tion sensor.
CHECK INPUT SIGNAL.
1. Start engine.
2. Select ªTCM INPUT SIGNALSº
in Data Monitor.
3. Read out the value of ªVHCL/S
SEzA/Tº while driving.
Check the value changes
according to driving speed.
------------------------------------------------------------------------------------------------------------------------------------OR------------------------------------------------------------------------------------------------------------------------------------
1. Start engine.
2. Check voltage between TCM
terminal
V29and 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
cNG
Check the following items:
+Harness for short or
open between TCM and
revolution sensor (Main
harness)
+Harness for short or
open between revolution
sensor and ECM (Main
harness)
+Ground circuit for ECM
Refer to EC section
(ªTROUBLE DIAGNO-
SIS FOR POWER SUP-
PLYº).
Perform ªSELF-DIAGNOSIS CODE CON-
FIRMATION PROCEDUREº, AT-1064.
OK
cNG
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
+For removal, refer to AT-1124.
+Check resistance between terminals
V1,V2andV3.
Terminal No. Resistance
V1V2500 - 650W
V2V3No continuity
V1V3No continuity
SAT738J
SAT235J
SAT236J
.
.
.
TROUBLE DIAGNOSIS FOR VHCL SPEED SENzA/T
Vehicle Speed SensorzA/T (Revolution
sensor) (Cont'd)
AT-1065

Vehicle Speed SensorzMTR
DESCRIPTION
The vehicle speed sensorzMTR is built into the speedometer
assembly. The sensor functions as an auxiliary device to the
revolution sensor when it is malfunctioning. The TCM will then
use a signal sent from the vehicle speed sensorzMTR.
ON BOARD DIAGNOSIS LOGIC
Diagnostic trouble code Malfunction is detected when ...Check items
(Possible cause)
:
VHCL SPEED SENzMTR
TCM does not receive the proper volt-
age signal from the sensor.+Harness or connectors
(The sensor circuit is open or
shorted.)
+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 ªSELF-DIAG RESULTSº mode for A/T with
CONSULT-II.
3) Drive vehicle under the following conditions:
Selector lever in ªDº 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 ªDº position and vehicle speed higher
than 20 km/h (12 MPH).
3) Perform self-diagnosis.
Refer to SELF-DIAGNOSTIC PROCEDURE (Without
CONSULT-II), AT-1029.
SAT237J
SAT014K
SAT807H
TROUBLE DIAGNOSIS FOR VHCL SPEED SENzMTR
AT-1066

DIAGNOSTIC PROCEDURE
CHECK INPUT SIGNAL.
1. Start engine.
2. Select ªTCM INPUT SIGNALSº
in Data Monitor.
3. Read out the value of ªVHCL/S
SEzMTRº while driving.
Check the value changes
according to driving speed.
------------------------------------------------------------------------------------------------------------------------------------OR------------------------------------------------------------------------------------------------------------------------------------
1. Start engine.
2. Check voltage between TCM
terminal
V40and ground while
driving at 2 to 3 km/h (1 to 2
MPH) for1m(3ft)ormore.
Voltage:
Voltage varies between
less than 1V and more than
4.5V.
OK
cNG
Check the following items:
+Vehicle speed sensor
and ground circuit for
vehicle speed sensor
Refer to EL section
(ªMETERS AND
GAUGESº).
+Harness for short or
open between TCM and
vehicle speed sensor
(Main harness)
Perform ªSELF-DIAGNOSIS CODE CON-
FIRMATION PROCEDUREº, AT-1066.
OK
cNG
1. Perform TCM input/
output signal inspection.
2. If NG, recheck TCM pin
terminals for damage or
loose connection with
harness connector.
INSPECTION END
SAT738J
SAT238J.
.
TROUBLE DIAGNOSIS FOR VHCL SPEED SENzMTR
Vehicle Speed SensorzMTR (Cont'd)
AT-1067

Accelerator Position Sensor
DESCRIPTION
The 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.+Harness or connectors
(The sensor circuit is open or
shorted.)
+Accelerator position sensor
: 3rd judgement flicker
CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE
Remarks: Specification data are reference values.
Monitor item Condition Specification
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 for A/T 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-1029.
SAT222JA
SAT014K
SAT808H
TROUBLE DIAGNOSIS FOR THROTTLE POSI SEN
AT-1068

DIAGNOSTIC PROCEDURE
Perform diagnostic test mode II (self-
diagnostic results) for engine control.
Refer to EC section [ªMalfunction Indica-
tor (MI)º, ªON BOARD DIAGNOSTIC
SYSTEM DESCRIPTIONº].
OK
cNG
Check accelerator position
sensor circuit for engine
control. Refer to EC sec-
tion [ªTROUBLE DIAGNO-
SIS FOR ªTHRTL
(ACCEL) POSI SENº
(DTC 43)].
CHECK INPUT SIGNAL.
1. Turn ignition switch to ªONº
position.
(Do not start engine.)
2. Select ªTCM 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
position. (Do not start engine.)
2. Check voltage between TCM
terminals
V41andV42while
accelerator pedal is depressed
slowly.
Voltage:
Fully-closed throttle valve:
Approximately 0.5 - 0.7V
Fully-open throttle valve:
Approximately 4V
(Voltage rises gradually in
response to throttle position)
OK
cNG
Check harness for short or
open between ECM and
TCM regarding accelerator
position sensor circuit.
(Main harness)
CHECK ACCELERATOR POSITION
SWITCH.
Refer to ªCHECK ACCELERATOR POSI-
TION SWITCHº, AT-1091.
OK
cNG
Repair or replace dam-
aged parts.
Perform ªSELF-DIAGNOSIS CODE CON-
FIRMATION PROCEDUREº, AT-1068.
OK
cNG
1. Perform TCM input/
output signal inspection.
2. If NG, recheck TCM pin
terminals for damage or
loose connection with
harness connector.
INSPECTION END
SAT738J
SAT239J
.
.
.
.
TROUBLE DIAGNOSIS FOR THROTTLE POSI SEN
Accelerator Position Sensor (Cont'd)
AT-1069

Shift Solenoid Valve A
DESCRIPTION
Shift solenoid valves A and B are turned ªONº or ªOFFº by the
TCM in response to signals sent from the inhibitor switch, vehicle
speed and throttle position sensors. Gears will then be shifted to
the optimum position.
Gear position1234
Shift solenoid valve A ON OFF OFF ON
Shift solenoid valve B ON ON OFF OFF
ON BOARD DIAGNOSIS LOGIC
Diagnostic trouble code Malfunction is detected when ...Check items
(Possible cause)
: SHIFT SOLENOID/V A
TCM detects an improper voltage drop
when it tires to operate the solenoid
valve.+Harness or connectors
(The solenoid circuit is open or
shorted.)
+Shift solenoid valve A
: 4th 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 ªSELF-DIAG RESULTSº mode for A/T with
CONSULT-II.
3) Drive vehicle in D
1®D2position.
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------OR-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1) Start engine.
2) Drive vehicle in D
1®D2position.
3) Perform self-diagnosis.
Refer to SELF-DIAGNOSTIC PROCEDURE (Without
CONSULT-II), AT-1029.
SAT341H
SAT014K
SAT809H
TROUBLE DIAGNOSIS FOR SHIFT SOLENOID/V A
AT-1070