2000 NISSAN PATROL sensor

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

Shift Solenoid Valve B
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 B
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 B
: 5th 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®D2®D3position.
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------OR-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1) Start engine.
2) Drive vehicle in D
1®D2®D3position.
3) Perform self-diagnosis.
Refer to SELF-DIAGNOSTIC PROCEDURE (Without
CONSULT-II), AT-1029.
SAT341H
SAT014K
SAT812H
TROUBLE DIAGNOSIS FOR SHIFT SOLENOID/V B
AT-1072

Overrun Clutch Solenoid Valve
DESCRIPTION
The overrun clutch solenoid valve is activated by the TCM in
response to signals sent from the inhibitor switch, overdrive con-
trol switch, vehicle speed and throttle position sensors. The over-
run clutch operation will then be controlled.
ON BOARD DIAGNOSIS LOGIC
Diagnostic trouble code Malfunction is detected when ...Check items
(Possible cause)
: OVERRUN CLUTCH S/V
TCM detects an improper voltage drop
when it tires to operate the solenoid
valve.+Harness or connectors
(The solenoid circuit is open or
shorted.)
+Overrun clutch solenoid valve
: 6th 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, overdrive control switch
in ªOFFº position and vehicle speed higher than 10
km/h (6 MPH).
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------OR-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1) Start engine.
2) Drive vehicle under the following conditions:
Selector lever in ªDº position, overdrive control switch
in ªOFFº position and vehicle speed higher than 10
km/h (6 MPH).
3) Perform self-diagnosis.
Refer to SELF-DIAGNOSTIC PROCEDURE (Without
CONSULT-II), AT-1029.
SAT341H
SAT014K
SAT815H
TROUBLE DIAGNOSIS FOR OVERRUN CLUTCH S/V
AT-1074

Torque Converter Clutch Solenoid Valve
DESCRIPTION
The torque converter clutch solenoid valve is activated, with the
gear in D
4, by the TCM in response to signals sent from the
vehicle speed and throttle (accelerator) position sensors. Torque
converter clutch piston operation will then be controlled.
Lock-up operation, however, is prohibited when A/T fluid tem-
perature is too low.
ON BOARD DIAGNOSIS LOGIC
Diagnostic trouble code Malfunction is detected when ...Check items
(Possible cause)
: T/C CLUTCH SOL/V
TCM detects an improper voltage drop
when it tires to operate the solenoid
valve.+Harness or connectors
(The solenoid circuit is open or
shorted.)
+T/C clutch solenoid valve
: 7th judgement flicker
CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE
Remarks: Specification data are reference values.
Monitor item Condition Specification
Torque converter clutch solenoid valve
dutyLock-up ªOFFº
¯
Lock-up ªONºApproximately
4%
¯
Approximately
94%
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®D2®D3®D4®D4lock-up
position.
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------OR-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1) Start engine.
2) Drive vehicle in D
1®D2®D3®D4®D4lock-up
position.
3) Perform self-diagnosis.
Refer to SELF-DIAGNOSTIC PROCEDURE (Without
CONSULT-II), AT-1029.
SAT342HA
SAT014K
SAT818H
TROUBLE DIAGNOSIS FOR T/C CLUTCH SOL/V
AT-1076

A/T Fluid Temperature Sensor and TCM
Power Source
DESCRIPTION
The A/T fluid temperature sensor detects the A/T fluid tempera-
ture and sends a signal to the TCM.
ON BOARD DIAGNOSIS LOGIC
Diagnostic trouble code Malfunction is detected when ...Check items
(Possible cause)
:
BATT/FLUID TEMP SEN
TCM receives an excessively low or
high voltage from the sensor.+Harness or connectors
(The sensor circuit is open or
shorted.)
+A/T fluid temperature sensor
: 8th judgement flicker
CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE
Remarks: Specification data are reference values.
Monitor item Condition Specification
A/T fluid temperature sensorCold [20ÉC (68ÉF)]
¯
Hot [80ÉC (176ÉF)]Approximately
1.5V
¯
Approximately
0.5V
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
1/8 of the full open position, engine speed higher than
450 rpm and driving for more than 10 minutes.
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------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
1/8 of the full open position, engine speed higher than
450 rpm and driving for more than 10 minutes.
3) Perform self-diagnosis.
Refer to SELF-DIAGNOSTIC PROCEDURE (Without
CONSULT-II), AT-1029.
SAT342HA
SAT014K
SAT821H
TROUBLE DIAGNOSIS FOR BATT/FLUID TEMP SEN
AT-1079

DIAGNOSTIC PROCEDURE
CHECK TCM POWER SOURCE.
1. Turn ignition switch to ªONº position.
(Do not start engine.)
2. Check voltage between TCM terminals
V10,V19and ground.
Battery voltage should exist.
OK
cNG
Check the following items:
+Harness for short or
open between ignition
switch and TCM (Main
harness)
+Ignition switch and fuse
Refer to EL section
(ªPOWER SUPPLY
ROUTINGº).
CHECK A/T FLUID TEMPERATURE
SENSOR WITH TERMINAL CORD
ASSEMBLY.
1. Turn ignition switch to ªOFFº position.
2. Disconnect terminal cord assembly
connector in engine compartment.
3. Check resistance between terminals
V8andV9when A/T is cold.
Resistance:
Cold [20ÉC (68ÉF)]
Approximately 2.5 kW
4. Reinstall any part removed.
OK
cNG
1. Remove oil pan.
2. Check the following
items:
+A/T fluid temperature
sensor
Refer to ªCOMPONENT
INSPECTIONº on next
page.
+Harness of terminal cord
assembly for short or
open
VA
(Go to next page.)
SAT248J
SAT249J
.
.
TROUBLE DIAGNOSIS FOR BATT/FLUID TEMP SEN
A/T Fluid Temperature Sensor and TCM
Power Source (Cont'd)
AT-1080

VA
CHECK INPUT SIGNAL OF A/T FLUID
TEMPERATURE SENSOR.
1. Start engine.
2. Select ªTCM INPUT SIGNALSº
in Data Monitor.
3. Read out the value of ªFLUID
TEMP SEº.
Voltage:
Cold [20ÉC (68ÉF)]®
Hot [80ÉC (176ÉF)]:
Approximately
1.5V®0.5V
------------------------------------------------------------------------------------------------------------------------------------OR------------------------------------------------------------------------------------------------------------------------------------
1. Start engine.
2. Check voltage between TCM
terminal
V47and ground while
warming up A/T.
Voltage:
Cold [20ÉC (68ÉF)]®
Hot [80ÉC (176ÉF)]:
Approximately
1.5V®0.5V
OK
cNG
Check the following item:
+Harness for short or
open between TCM and
terminal cord assembly
(Main harness)
Perform ªSELF-DIAGNOSIS CODE CON-
FIRMATION PROCEDUREº, AT-1079.
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
A/T fluid temperature sensor
+For removal, refer to AT-1124.
+Check resistance between terminals
V8andV9while chang-
ing temperature as shown at left.
Temperature ÉC (ÉF) Resistance
20 (68) Approximately 2.5 kW
80 (176) Approximately 0.3 kW
SAT738J
SAT250J
SAT252J
.
.
.
TROUBLE DIAGNOSIS FOR BATT/FLUID TEMP SEN
A/T Fluid Temperature Sensor and TCM
Power Source (Cont'd)
AT-1081