2002 NISSAN TERRANO engine

qA
CHECK INPUT SIGNAL OF A/T FLUID
TEMPERATURE SENSOR.
1. Start engine.
2. Select ªECU 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 ter-
minalq
47and ground while warm-
ing up A/T.
Voltage:
Cold [20ÉC (68ÉF)]®
Hot [80ÉC (176ÉF)]:
Approximately
1.5V®0.5V
OK
ENG
Check the following item:
IHarness for short or
open between TCM and
terminal cord assembly
(Main harness)
Perform ªSELF-DIAGNOSIS CODE CON-
FIRMATION PROCEDUREº, AT-76.
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
COMPONENT INSPECTION
A/T fluid temperature sensor
IFor removal, refer to AT-113.
ICheck resistance between terminalsq
6andq7while changing
temperature as shown at left.
Temperature ÉC (ÉF) Resistance
20 (68) Approximately 2.5 kW
80 (176) Approximately 0.3 kW
YAT318
YAT319
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TROUBLE DIAGNOSIS FOR BATT/FLUID TEMP SEN
A/T Fluid Temperature Sensor and TCM Power
Source (Cont'd)
AT-78

Wiring Diagram Ð AT Ð ENGSS
YAT271
TROUBLE DIAGNOSIS FOR ENGINE SPEED SIG
AT-79

Engine Speed Signal
DESCRIPTION
The engine speed signal is sent from the ECM to the TCM.
ON BOARD DIAGNOSIS LOGIC
Diagnostic trouble code Malfunction is detected when ...Check items
(Possible cause)
:
ENGINE SPEED SIG
TCM does not receive the proper volt-
age signal from ECM.IHarness or connectors
(The sensor circuit is open or
shorted.)
:
9th 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 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 throttle position and driving for more than 10 sec-
onds.
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------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 throttle position and driving for more than 10 sec-
onds.
3) Perform self-diagnosis.
Refer to SELF-DIAGNOSTIC PROCEDURE (Without
CONSULT-II), AT-15.SAT823H
TROUBLE DIAGNOSIS FOR ENGINE SPEED SIG
AT-80

DIAGNOSTIC PROCEDURE
Perform diagnostic test mode II (self-
diagnostic results) for engine control.
Check ignition signal circuit condition.
OK
ENG
Check ignition signal circuit
for engine control. Refer to
EC section [TROUBLE
DIAGNOSIS FOR ªIGN
SIGNAL-PRIMARYº (DTC
21)].
CHECK INPUT SIGNAL.
1. Start engine.
2. Select ªECU INPUT SIGNALSº in
Data Monitor.
3. Read out the value of ªENGINE
SPEEDº.
Check engine speed changes
according to throttle position.
-----------------------------------------------------------------------------------------------------------------------OR -----------------------------------------------------------------------------------------------------------------------
1. Start engine.
2. Check voltage between TCM ter-
minalq
39and ground.
Voltage (Idle speed):
Approximately 0.8V
Voltage (2,000 rpm):
Approximately 2.2V
OK
ENG
Check the following items:
IHarness for short or
open between TCM and
ECM
IResistor
Refer to EC section
[TROUBLE DIAGNOSIS
FOR ªIGN SIGNAL-PRI-
MARYº (DTC 21)].
Perform ªSELF-DIAGNOSIS CODE CON-
FIRMATION PROCEDUREº, AT-80.
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
YAT320
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TROUBLE DIAGNOSIS FOR ENGINE SPEED SIG
Engine Speed Signal (Cont'd)
AT-81

Line Pressure Solenoid Valve
DESCRIPTION
The line pressure solenoid valve regulates the oil pump discharge
pressure to suit the driving condition in response to a signal sent
from the TCM.
ON BOARD DIAGNOSIS LOGIC
Diagnostic trouble code Malfunction is detected when ...Check items
(Possible cause)
: LINE PRESSURE S/V
TCM detects an improper voltage drop
when it tries to operate the solenoid
valve.IHarness or connectors
(The solenoid circuit is open or
shorted.)
ILine pressure solenoid valve
: 10th judgement flicker
CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE
Remarks: Specification data are reference values.
Monitor item Condition Specification
Line pressure solenoid valve dutyLow line-pressure
(Small throttle opening)
"
High line-pressure
(Large throttle opening)Approximately
29%
"
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 with CONSULT-II.
3) With brake pedal depressed, shift the lever from ªPº,
ªNº,ªDº,ªNº,ªPº positions.
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------OR------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1) Start engine.
2) With brake pedal depressed, shift the lever from ªPº,
ªNº,ªDº,ªNº,ªPº positions.
3) Perform self-diagnosis.
Refer to SELF-DIAGNOSTIC PROCEDURE (Without
CONSULT-II), AT-15.
SAT341H
SAT824H
TROUBLE DIAGNOSIS FOR LINE PRESSURE S/V
AT-84

DIAGNOSTIC PROCEDURE
CHECK GROUND CIRCUIT.
1. Turn ignition switch to ªOFFº position.
2. Disconnect terminal cord assembly
connector in engine compartment.
3. Check resistance between terminalq
4
and ground.
Resistance: 2.5 - 5W
OK
ENG
1. Remove control valve
assembly. Refer to
AT-113.
2. Check the following
items:
ILine pressure solenoid
valve
Refer to ªCOMPO-
NENT INSPECTIONº
on next page.
IHarness of terminal
cord assembly for
short or open
CHECK POWER SOURCE CIRCUIT.
1. Turn ignition switch to ªOFFº position.
2. Disconnect TCM harness connector.
3. Check resistance between terminalq
4
and TCM harness connector terminal
q
2.
Resistance: 11.2 - 12.8W
OK
ENG
Check the following items:
IDropping resistor
Refer to ªCOMPONENT
INSPECTIONº on next
page.
IHarness for short or
open between TCM ter-
minalq
2and terminal
cord assembly (Main
harness)
CHECK POWER SOURCE CIRCUIT.
1. Turn ignition switch to ªOFFº position.
2. Check resistance between terminalq
6
and TCM harness connector terminal
q
1.
Resistance:
Approximately 0W
If OK, check harness for short to
ground and short to power.
3. Reinstall any part removed.
OK
ENG
Repair open circuit or short
to ground or short to
power in harness or con-
nector.
Perform ªSELF-DIAGNOSIS CODE CON-
FIRMATION PROCEDUREº, AT-84.
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
YAT321
YAT322
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TROUBLE DIAGNOSIS FOR LINE PRESSURE S/V
Line Pressure Solenoid Valve (Cont'd)
AT-85

DIAGNOSTIC PROCEDURE
CHECK PARK/NEUTRAL POSITION
SWITCH CIRCUIT.
1. Turn ignition switch to ªONº posi-
tion.
(Do not start engine.)
2. Select ªECU INPUT SIGNALSº in
Data Monitor.
3. Read out ªR, N, D, 2 and 1 posi-
tion switchesº moving selector
lever to each position.
Check the signal of the selector
lever position is indicated properly.
-----------------------------------------------------------------------------------------------------------------------OR -----------------------------------------------------------------------------------------------------------------------
1. Turn ignition switch to ªONº posi-
tion. (Do not start engine.)
2. Check voltage between TCM ter-
minalsq
26,q27,q34,q35,q36and
ground while moving selector
lever through each position.
Voltage:
B: Battery voltage
0: 0V
OK
ENG
Check the following items:
IPark/neutral position
switch
Refer to ªCOMPONENT
INSPECTIONº, AT-114.
IHarness for short or
open between ignition
switch and park/neutral
position switch (Main
harness)
IHarness for short or
open between park/
neutral position switch
and TCM (Main harness)
IDiode
qA
(Go to next page.)
Lever positionTerminal No.
q36q35q34q27q26
P, NB0000
R0B000
D00B00
2 000B0
1 0000B
YAT326
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TROUBLE DIAGNOSIS FOR NON-DETECTABLE ITEMS
Park/neutral Position, Overdrive Control or
Throttle (Accelerator) Position Switches
(Cont'd)
AT-89

qA
CHECK OVERDRIVE CONTROL
SWITCH CIRCUIT.
1. Turn ignition switch to ªONº posi-
tion.
(Do not start engine.)
2. Select ªECU INPUT SIGNALSº in
Data Monitor.
3. Read out ªOVERDRIVE SWITCHº.
Check the signal of the overdrive
control switch is indicated prop-
erly.
(Overdrive control switch ªONº
displayed on CONSULT-II means
overdrive ªOFFº.)
-----------------------------------------------------------------------------------------------------------------------OR -----------------------------------------------------------------------------------------------------------------------
1. Turn ignition switch to ªONº posi-
tion.
(Do not start engine.)
2. Check voltage between TCM ter-
minalq
22and ground when over-
drive control switch is ªONº and
ªOFFº.
OK
ENG
Check the following items.
IOverdrive control switch
Refer to ªCOMPONENT
INSPECTIONº, AT-114.
IHarness for short or
open between TCM and
overdrive control switch
(Main harness)
IHarness for short or
open of ground circuit for
overdrive control switch
(Main harness)
qB(Go to next page.)
Switch position Voltage
ON Battery voltage
OFF 1V or less
YAT327
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TROUBLE DIAGNOSIS FOR NON-DETECTABLE ITEMS
Park/neutral Position, Overdrive Control or
Throttle (Accelerator) Position Switches
(Cont'd)
AT-90