2001 NISSAN X-TRAIL engine control

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
AT-303
[EXC.F/EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
Offensive smell at fluid charging pipe.ON vehicle 1. Fluid levelAT- 2 6 4 , "
FLUID LEVEL
CHECK"
OFF vehicle2. Torque converterAT- 4 2 5 , "
Locations of
Adjusting Shims, Needle
Bearings, Thrust Washers
and Snap Rings"
3. Oil pumpAT- 4 4 4 , "Oil Pump"
4. Reverse clutchAT- 4 6 3 , "Reverse Clutch"
5. High clutchAT- 4 6 6 , "High Clutch"
6. Brake bandAT- 4 8 8 , "Band Servo Pis-
ton Assembly"
7. Forward clutchAT- 4 7 1 , "Forward and
Overrun Clutches"
8. Overrun clutchAT- 4 7 1 , "Forward and
Overrun Clutches"
9. Low & reverse brakeAT- 4 7 6 , "Low & Reverse
Brake"
Torque converter is not locked up. ON vehicle1. Accelerator pedal position (APP) sensorAT- 3 6 2 , "
ACCELE
RATOR PEDAL POSI-
TION (APP) SENSOR"
2. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 3 5 3 , "
VEHICLE
SPEED SENSOR·A/T
(REVOLUTION SEN-
SOR)",AT-358, "DTC
VEHICLE SPEED SEN-
SOR MTR"
3. Engine speed signalAT- 3 9 2 , "ENGINE SPEED
SIGNAL"
4. A/T fluid temp sen circ and TCM pow
sourAT- 3 8 6 , "
BATT/FLUID
TEMP SEN (A/T FLUID
TEMP SENSOR CIR-
CUIT AND TCM POWER
SOURCE)"
5. Line pressure testAT- 2 6 8 , "Line Pressure
Te s t"
6. Torque converter clutch solenoid valveAT- 3 8 1 , "
TORQUE CON-
VERTER CLUTCH
SOLENOID VALVE"
7. Control valve assemblyAT- 4 1 4 , "
Control Valve
Assembly and Accumula-
tors"
Torque converter is not locked up. OFF vehicle 8. Torque converterAT- 4 2 5 , "
Locations of
Adjusting Shims, Needle
Bearings, Thrust Washers
and Snap Rings"
Symptom Condition Diagnostic Item Reference Page

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
AT-305
[EXC.F/EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
A/T does not shift to “D4 ” when driv-
ing with overdrive control switch “ON”.ON vehicle1. Accelerator pedal position (APP) sensorAT- 3 6 2 , "
ACCELE
RATOR PEDAL POSI-
TION (APP) SENSOR"
2. PNP switchAT- 3 4 4 , "TCM Self-diag-
nosis Does Not Activate"
3. Overdrive control switchAT- 3 4 4 , "TCM Self-diag-
nosis Does Not Activate"
4. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 3 5 3 , "
VEHICLE
SPEED SENSOR·A/T
(REVOLUTION SEN-
SOR)",AT-358, "DTC
VEHICLE SPEED SEN-
SOR MTR"
5. Shift solenoid valve AAT- 3 6 7 , "SHIFT SOLE-
NOID VALVE A"
6. Overrun clutch solenoid valveAT- 3 7 7 , "
OVERRUN
CLUTCH SOLENOID
VA LV E"
7. Control valve assemblyAT- 4 1 4 , "
Control Valve
Assembly and Accumula-
tors"
8. A/T fluid temp sen circ and TCM pow
sourAT- 3 8 6 , "
BATT/FLUID
TEMP SEN (A/T FLUID
TEMP SENSOR CIR-
CUIT AND TCM POWER
SOURCE)"
9. Line pressure testAT- 2 6 8 , "Line Pressure
Te s t"
A/T does not shift to “D4 ” when driv-
ing with overdrive control switch “ON”.OFF vehicle10. Brake bandAT- 4 8 8 , "
Band Servo Pis-
ton Assembly"
11. Overrun clutchAT- 4 7 1 , "Forward and
Overrun Clutches"
Engine is stopped at “R”, “D”, “2” and
“1” positions.ON vehicle1. Fluid levelAT- 2 6 4 , "
FLUID LEVEL
CHECK"
2. Torque converter clutch solenoid valveAT- 3 8 1 , "
TORQUE CON-
VERTER CLUTCH
SOLENOID VALVE"
3. Shift solenoid valve AAT- 3 6 7 , "SHIFT SOLE-
NOID VALVE A"
4. Shift solenoid valve BAT- 3 7 2 , "SHIFT SOLE-
NOID VALVE B"
5. Control valve assemblyAT- 4 1 4 , "
Control Valve
Assembly and Accumula-
tors"
Symptom Condition Diagnostic Item Reference Page

CAN COMMUNICATION
AT-309
[EXC.F/EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
CAN COMMUNICATIONPFP:23710
System DescriptionECS004VQ
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
FOR A/T MODELS
System diagram
Input/output signal chart
T: Transmit R: Receive
SKIA0884E
Signals ECM TCM
Engine coolant temperature signal T R
Accelerator pedal position signal T R
A/T self-diagnosis signal R T

AT-314
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSES FOR SYMPTOMS
Engine Cannot Be Started In “P” and “N” Position
ECS004V3
SYMPTOM:
●Engine cannot be started with selector lever in “P” or “N” position.
●Engine can be started with selector lever in “D”, “2”, “1” or “R” position.
1. CHECK PNP SWITCH CIRCUIT
With CONSULT-II
Does “TCM INPUT SIGNALS” in “DATA MONITOR” show damage to PNP switch circuit?
Without CONSULT-II
Does self-diagnosis show damage to PNP switch circuit?
Ye s o r N o
Yes >> Check PNP switch circuit. Refer to AT- 3 4 4 , "TCM Self-
diagnosis Does Not Activate" .
No >> GO TO 2.
2. CHECK PNP SWITCH INSPECTION
Check for short or open of PNP switch harness connector terminals 1 and 2.
Refer to AT-344, "
TCM Self-diagnosis Does Not Activate" .
OK or NG
OK >> GO TO 3.
NG >> Repair or replace PNP switch.
3. CHECK CONTROL CABLE
Check control cable. Refer to AT- 4 1 6 , "
Control Cable Adjustment" .
OK or NG
OK >> GO TO 4.
NG >> Adjust control cable. Refer to AT- 4 1 6 , "
Control Cable
Adjustment" .
4. CHECK STARTING SYSTEM
Check starting system. Refer to SC-20, "
STARTING SYSTEM" .
OK or NG
OK >>INSPECTION END
NG >> Repair or replace damaged parts.
SCIA0706E
SCIA0768E
SAT023JB

AT-332
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSES FOR SYMPTOMS
A/T Does Not Perform Lock-up
ECS004VD
SYMPTOM:
A/T does not perform lock-up at the specified speed.
1. CHECK SELF-DIAGNOSTIC RESULTS
Does self-diagnosis show damage to A/T fluid temperature sensor, vehicle speed sensor·A/T (revolution sen-
sor), engine speed signal or torque converter clutch solenoid valve circuit after cruise test?
Ye s o r N o
Yes >> Check damaged circuit. Refer to AT- 3 8 1 , "TORQUE CONVERTER CLUTCH SOLENOID VALVE"
,AT- 3 8 6 , "BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM POWER
SOURCE)" , AT- 3 5 3 , "VEHICLE SPEED SENSOR·A/T (REVOLUTION SENSOR)" , AT- 3 9 2 ,
"ENGINE SPEED SIGNAL" .— Except for Euro-OBD
No >> GO TO 2.
2. CHECK ACCELERATOR PEDAL POSITION (APP) SENSOR
Check accelerator pedal position (APP) sensor. Refer to AT- 3 6 2 ,
"ACCELE RATOR PEDAL POSITION (APP) SENSOR" (Except for
Euro-OBD).
OK or NG
OK >> GO TO 3.
NG >> Repair or replace accelerator pedal position (APP) sen-
sor.
3. DETECT MALFUNCTIONING ITEM
1. Remove control valve. Refer to AT- 4 1 3 , "
Installation" .
2. Check the following items:
–Torque converter clutch control valve
–Torque converter relief valve
–Pilot valve
–Pilot filter
3. Disassemble A/T.
4. Check torque converter.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4. CHECK SYMPTOM
Check again.
OK or NG
OK >>INSPECTION END
NG >> 1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
PBIB0498E

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-333
[EXC.F/EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
A/T Does Not Hold Lock-up ConditionECS004VE
SYMPTOM:
A/T does not hold lock-up condition for more than 30 seconds.
1.CHECK DIAGNOSTIC RESULTS
Does self-diagnosis show damage to engine speed signal circuit
after cruise test?
Ye s o r N o
Yes >> Check engine speed signal circuit. Refer to AT- 3 9 2 ,
"ENGINE SPEED SIGNAL" (Except for Euro-OBD).
No >> GO TO 2.
2.CHECK A/T FLUID CONDITION
1. Remove oil pan.
2. Check A/T fluid condition.
OK or NG
OK >> GO TO 3.
NG >> GO TO 5.
3.DETECT MALFUNCTIONING ITEM
1. Remove control valve assembly. Refer to AT- 4 1 3 , "
Installation" .
2. Check the following items:
–Torque converter clutch control valve
–Pilot valve
–Pilot filter
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4.CHECK SYMPTOM
Check again.
OK or NG
OK >>INSPECTION END
NG >> 1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
SCIA0773E
SAT171B

AT-336
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSES FOR SYMPTOMS
Engine Speed Does Not Return To Idle (Light Braking D
4→ D3 )ECS004VG
SYMPTOM:
●Engine speed does not smoothly return to idle when A/T shifts from D4 to D3 .
●Vehicle does not decelerate by engine brake when turning overdrive control switch OFF.
●Vehicle does not decelerate by engine brake when shifting A/T from “D” to “2” position.
1. CHECK SELF-DIAGNOSTIC RESULTS
Does self-diagnosis show damage to overrun clutch solenoid valve
circuit after cruise test?
Ye s o r N O
Yes >> Check overrun clutch solenoid valve circuit. Refer to AT-
377, "OVERRUN CLUTCH SOLENOID VALVE"
(Except for Euro-OBD).
No >> GO TO 2.
2. CHECK ACCELERATOR PEDAL POSITION (APP) SENSOR
Check accelerator pedal position (APP) sensor. Refer to AT- 3 6 2 ,
"ACCELE RATOR PEDAL POSITION (APP) SENSOR" —Except for
Euro-OBD.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace accelerator pedal position (APP) sen-
sor.
3. CHECK A/T FLUID CONDITION
1. Remove oil pan.
2. Check A/T fluid condition.
OK or NG
OK >> GO TO 4.
NG >> GO TO 6.
SCIA0774E
PBIB0498E
SAT171B

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-343
[EXC.F/EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
Vehicle Does Not Decelerate By Engine BrakeECS004VL
SYMPTOM:
Vehicle does not decelerate by engine brake when shifting from 2
2 (12 ) to 11 .
1.CHECK PNP SWITCH CIRCUIT
With CONSULT-II
Does “TCM INPUT SIGNALS” in “DATA MONITOR” show damage to PNP switch circuit?
Without CONSULT-II
Does self-diagnosis show damage to PNP switch circuit?
Ye s o r N o
Yes >> Check PNP switch circuit. Refer to AT- 3 4 4 , "TCM Self-
diagnosis Does Not Activate" .
No >> GO TO 2
2.CHECK CONTROL CABLE
Check control cable. Refer to AT-416, "
Control Cable Adjustment" .
OK or NG
OK >> GO TO 3.
NG >> Adjust control cable. Refer to AT- 4 1 6 , "
Control Cable
Adjustment" .
3.CHECK VEHICLE SPEED SENSOR·A/T (REVOLUTION SENSOR) AND CHECK VEHICLE SPEED
SENSOR·MTR CIRCUIT
Check vehicle speed sensor·A/T (revolution sensor) and vehicle speed sensor·MTR circuit. Refer to AT- 3 5 3 ,
"VEHICLE SPEED SENSOR·A/T (REVOLUTION SENSOR)" and AT-358, "DTC VEHICLE SPEED SENSOR
MTR" (Except for Euro-OBD).
OK or NG
OK >> GO TO 4.
NG >> Repair or replace vehicle speed sensor·A/T (revolution sensor) and vehicle speed sensor·MTR
circuits.
SCIA0706E
SAT023JB