2004 NISSAN TERRANO Service Repair Manual

Wiring Diagram Ð AT Ð LPSV
LHD MODELS
YAT278
TROUBLE DIAGNOSIS FOR LINE PRESSURE S/V
AT-84
http://vnx.su/

RHD MODELS
YAT279
TROUBLE DIAGNOSIS FOR LINE PRESSURE S/V
Wiring Diagram Ð AT Ð LPSV (Cont'd)AT-85
http://vnx.su/

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 codeMalfunction 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.I
Harness or connectors
(The solenoid circuit is open or
shorted.)
I Line pressure solenoid valve
: 10th judgement flicker
CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE
Remarks: Specification data are reference values.
Monitor item ConditionSpecification
Line pressure solenoid valve duty Low 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-86
http://vnx.su/

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 terminal q
4
and ground.
Resistance: 2.5 - 5W
OK
ENG
1. Remove control valve
assembly. Refer to
AT-118.
2. Check the following items:
ILine pressure solenoid
valve
Refer to ªCOMPO-
NENT INSPECTIONº
on next page.
I Harness 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 terminal q
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.
I Harness for short or
open between TCM ter-
minal q
2and terminal
cord assembly (Main
harness)
CHECK POWER SOURCE CIRCUIT.
1. Turn ignition switch to ªOFFº position.
2. Check resistance between terminal q
4
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-86.
OK
ENG1. Perform TCM input/
output signal inspection.
2. If NG, recheck TCM pin terminals for damage or
loose connection with
harness connector.
INSPECTION END
YAT321
YAT420
H
H
H
H
TROUBLE DIAGNOSIS FOR LINE PRESSURE S/V
Line Pressure Solenoid Valve (Cont'd)
AT-87
http://vnx.su/

COMPONENT INSPECTION
Line pressure solenoid valve
IFor removal, refer to AT-118.
Resistance check
I Check resistance between terminal q
4and ground.
Solenoid valve
Terminal No.Resistance
(Approx.)
Line pressure
solenoid valve q
4Ground
2.5 - 5W
Operation check
ICheck solenoid valve by listening for its operating sound while
applying battery voltage to the terminal q
4and ground.
Dropping resistor
I
Check resistance between terminals q1andq2.
Resistance: 11.2 - 12.8 W
YAT323
YAT421
YAT325
TROUBLE DIAGNOSIS FOR LINE PRESSURE S/V
Line Pressure Solenoid Valve (Cont'd)
AT-88
http://vnx.su/

Wiring Diagram Ð AT Ð PNP/SW
YAT406
TROUBLE DIAGNOSIS FOR NON-DETECTABLE ITEMS
AT-89
http://vnx.su/

YAT407
TROUBLE DIAGNOSIS FOR NON-DETECTABLE ITEMS
Wiring Diagram Ð AT Ð PNP/SW (Cont'd)AT-90
http://vnx.su/

YAT408
TROUBLE DIAGNOSIS FOR NON-DETECTABLE ITEMS
Wiring Diagram Ð AT Ð PNP/SW (Cont'd)AT-91
http://vnx.su/