NISSAN X-TRAIL 2003 Service Repair Manual

ENGINE SPEED SIGNAL
AT-385
[ALL]
D
E
F
G
H
I
J
K
L
MA
B
AT

2. CHECK INPUT SIGNAL
With CONSULT-II
1. Start engine.
2. Select “TCM INPUT SIGNALS” in “DATA MONITOR” mode for
“A/T” with CONSULT-II.
3. Read out the value of “ENGINE SPEED”.
Check engine speed changes according to throttle position.
Without CONSULT-II
1. Start engine.
2. Check voltage between TCM terminal 39 and ground.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
SAT014K
SAT645J
Name Connec-
tor No. Terminal
No. (Wire
color) ConditionJudgement standard
(Approx.)
Engine
speed signal F47 39(L/OR) -
Ground—Refer to EC-543, "
ECM
INSPECTION TABLE"
(WITHOUT EURO-OBD).
SCIA3265E

AT-386
[ALL]
ENGINE SPEED SIGNAL

3. CHECK HARNESS BETWEEN TCM AND ECM
1. Turn ignition switch OFF.
2. Disconnect ECM connector and TCM connector.
3. Check continuity between ECM connector and TCM connector.
4. If OK, check harness for short to ground and short to power.
5. If OK, check continuity between body ground and transaxle
assembly.
6. Reinstall any part removed.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
4. CHECK DTC
Perform Refer to AT- 3 8 2 , "
DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> 1. Perform TCM input/output signal inspection. Refer to AT- 9 4 , "
TCM Terminals and Reference
Va l u e" .
2. GO TO 5.
5. CHECK TCM
1. Check TCM input/output signal. Refer to AT- 9 4 , "
TCM Terminals and Reference Value" .
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK >>INSPECTION END
NG >> Repair or replace damaged parts.
Item Connector No.Terminal No.
(Wire color)Continuity
TCM F47 39 (L/OR)
Ye s
ECM M118 103 (L/OR)
SCIA3269E

LINE PRESSURE SOLENOID VALVE
AT-387
[ALL]
D
E
F
G
H
I
J
K
L
MA
B
AT

LINE PRESSURE SOLENOID VALVEPFP:31940
DescriptionECS004UF
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.
The line pressure duty cycle value is not consistent when the
closed throttle position switch is ON. To confirm the line pres-
sure duty cycle at low pressure, the accelerator (throttle)
should be open until the closed throttle position switch is OFF.
CONSULT-II Reference ValueECS00CT5
Remarks: Specification data are reference values.
NOTE:
The line pressure duty cycle value is not consistent when the closed throttle position switch is “ON”. To confirm the line pressure duty
cycle at low pressure, the accelerator (throttle) should be open until the closed throttle position switch is “OFF”.
On Board Diagnosis LogicECS00CT6
Possible CauseECS00CT7
Check the following items.

Harness or connector
(The solenoid circuit is open or shorted.)

Line pressure solenoid valve
DTC Confirmation ProcedureECS00CT8
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch OFF and wait at
least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch ON and select “DATA MONITOR” mode for
“A/T” with CONSULT-II.
SCIA0735E
Monitor item Condition Specification
Line pressure solenoid valve dutySmall throttle opening
(Low line pressure)
↓
Large throttle opening
(High line pressure)Approximately 24%
↓
Approximately 95%
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.

Harness or connectors
(The solenoid circuit is open or shorted.)

Line pressure solenoid valve
: 10th judgement flicker
SAT014K

AT-388
[ALL]
LINE PRESSURE SOLENOID VALVE

2. Depress accelerator pedal completely and wait at least 5 sec-
onds.
3. If check result is NG, go to AT- 3 9 0 , "
Diagnostic Procedure" .
WITHOUT CONSULT-II
1. Start engine.
2. With brake pedal depressed, shift the lever from P → N → D → N → P positions.
3. Perform self-diagnosis.
Refer to AT- 5 2 , "
Diagnostic Procedure Without CONSULT-II" .
4. If the check result is NG, go to AT- 3 9 0 , "
Diagnostic Procedure" .
SCIA5358E
SCIA5600E

LINE PRESSURE SOLENOID VALVE
AT-389
[ALL]
D
E
F
G
H
I
J
K
L
MA
B
AT

Wiring Diagram — AT — LPSVECS004UG
TCWA0046E

AT-390
[ALL]
LINE PRESSURE SOLENOID VALVE

TERMINALS AND REFERENCE VALUE MEASURED BETWEEN EACH TERMINAL
Diagnostic ProcedureECS004UH
1. CHECK INPUT SIGNAL
With CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Select “MAIN SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Read out the value of “LINE PRES DTY” while driving.
Check the value changes according to driving speed.
Without CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Check voltage between TCM connector and ground.
OK or NG
OK >> GO TO 5.
NG >> GO TO 2.
Te r m i -
nal No.Wire color Item ConditionJudgement stan-
dard
(Approx.)
1R/WLine pressure
solenoid valveWhen releasing accelerator pedal
after warming up engine.1.5 - 3.0V
When depressing accelerator pedal
fully after warming up engine.0V
2P/BLine pressure
solenoid valve
(with dropping
resistor)When releasing accelerator pedal
after warming up engine.5 - 14V
When depressing accelerator pedal
fully after warming up engine.0V
Monitor item Condition Display value
LINE PRES
DTY (%)Line pressure low – Line pressure high 24% – 95%
SCIA3251E
Name Connec-
tor No. Terminal
No. (Wire
color) ConditionJudge-
ment stan-
dard
(Approx.)
Line pres-
sure sole-
noid valve F46 1 (R/W) -
GroundWhen releasing acceler-
ator pedal after warming
up engine.1.5 - 3.0V
When depressing accel-
erator pedal fully after
warming up engine.0V
Line pres-
sure sole-
noid valve
(with drop-
ping resis-
tor) F46 2 (P/B) -
GroundWhen releasing acceler-
ator pedal after warming
up engine.5 - 14V
When depressing accel-
erator pedal fully after
warming up engine.0V
SCIA3267E

LINE PRESSURE SOLENOID VALVE
AT-391
[ALL]
D
E
F
G
H
I
J
K
L
MA
B
AT

2. CHECK DROPPING RESISTOR
1. Turn ignition switch OFF.
2. Disconnect dropping resistor harness connector in engine room.
3. Check resistance between terminal 1 and 2.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3. CHECK VALVE RESISTANCE
1. Turn ignition switch OFF.
2. Disconnect terminal cord assembly connector in engine room.
3. Check resistance between terminal cord assembly harness con-
nector F23 terminal 4 (R/W) and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.Resistance: Approx.12Ω
SCIA3276E
Resistance: 2.5 - 5Ω
SCIA3457E

AT-392
[ALL]
LINE PRESSURE SOLENOID VALVE

4. CHECK HARNESS BETWEEN TCM AND TERMINAL CORD ASSEMBLY HARNESS CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect terminal cord assembly harness connector and TCM connector.
3. Check continuity between terminal cord assembly harness con-
nector and TCM connector.
4. Check continuity between terminal cord assembly harness con-
nector and dropping resistor harness connector.
5. Check continuity between dropping resistor harness connector
and TCM connector.
6. If OK, check harness for short to ground and short to power.
7. If OK, check continuity between ground and transaxle assembly.
8. Reinstall any part removed.
OK or NG
OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
5. CHECK DTC
Perform AT- 3 8 7 , "
DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 6.
6. CHECK TCM
1. Check TCM input/output signal. Refer to AT- 9 4 , "
TCM Terminals and Reference Value" .
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK >>INSPECTION END
NG >> Repair or replace damaged parts.
Item Connector No.Terminal No.
(Wire color)Continuity
TCM F46 1 (R/W)
Ye s
Terminal cord assembly
harness connectorF23 4 (R/W)
SCIA3272E
Item Connector No.Terminal No.
(Wire color)Continuity
Dropping resistor harness
connectorE49 1 (R/W)
Ye s
Terminal cord assembly
harness connectorF23 4 (R/W)
SCIA3273E
Item Connector No.Terminal No.
(Wire color)Continuity
TCM F46 2 (P/B)
Ye s
Dropping resistor harness
connectorE49 2 (P/B)
SCIA3274E

LINE PRESSURE SOLENOID VALVE
AT-393
[ALL]
D
E
F
G
H
I
J
K
L
MA
B
AT

Component InspectionECS004UI
LINE PRESSURE SOLENOID VALVE

For removal, refer to AT- 4 0 4 , "Control Valve Assembly and Accumulators" .
Resistance Check

Check resistance between terminal 4 and ground.
Operation Check

Check solenoid valve by listening for its operating sound while
applying battery voltage to the terminal and ground.
DROPPING RESISTOR

Check resistance between terminal 1 and 2.
Solenoid valve Terminal No.Resistance
(Approx.)
Line pressure
solenoid valve4Ground2.5 - 5Ω
SCIA3457E
SCIA3275E
Resistance: Approx.12Ω
SCIA3276E

AT-394
[ALL]
MAIN POWER SUPPLY AND GROUND CIRCUIT

MAIN POWER SUPPLY AND GROUND CIRCUITPFP:00100
DescriptionECS00CS1
When the power supply to the TCM is cut OFF, for example because the battery is removed, and the self-diag-
nostics memory function stops, malfunction is detected.
On Board Diagnosis LogicECS00CS2

Diagnostic trouble code “INITIAL START” with CONSULT-II is detected when TCM dose not receive the
voltage signal from the battery power supply.

This is not a malfunction message. (Whenever shutting “OFF” a power supply to the TCM, this message
appears on the screen.)
Possible CauseECS00CS3
Harness or connector
(Battery or ignition switch and TCM circuit is open or shorted.)
DTC Confirmation ProcedureECS00CS4
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF”
and wait at least 10 seconds before performing the next test.
WITH CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Select “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Wait for at least 2 consecutive seconds.
4. If DTC is detected, go to AT- 3 9 6 , "
Diagnostic Procedure" .
SAT014K