engine NISSAN X-TRAIL 2003 Electronic Repair Manual

CAN COMMUNICATION
AT-351
[EXC.F/EURO-OBD]
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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 speed signal T R
Engine coolant temperature signal T R
Accelerator pedal position signal T R
A/T self-diagnosis signal R T

AT-354
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSES FOR SYMPTOMS
1. O/D OFF Indicator Lamp Does Not Come On
ECS004V2
SYMPTOM:
O/D OFF indicator lamp does not come on for about 2 seconds
whenturningignitionswitchto“ON”.
1.CHECK TCM POWER SOURCE
1. Turn ignition switch to “ON” position.
(Do not start engine.)
2. Check voltage between TCM terminals 10, 19, 28 and ground.
3. Turn ignition switch to “OFF” position.
4. Check voltage between TCM terminal 28 and ground.
OK or NG
OK >> GOTO2
NG >> Check the following items:
lHarness for short or open between ignition switch and
TCM terminals 10, 19 and 28 (Main harness).
lRefer toAT-389, "Wiring Diagram—AT—MAIN".
lIgnition switch and fuse Refer toPG-2, "POWER SUPPLY ROUTING".
2.CHECK TCM GROUND CIRCUIT
1. Turn ignition switch to “OFF” position.
2. Disconnect TCM harness connector.
3. Check continuity between TCM terminals 25, 48 and ground.
If OK, check harness for short to ground and short to power.
OK or NG
OK >> GOTO3
NG >> Repair open circuit or short to ground or short to power
in harness or connectors. Refer toAT-389, "
Wiring Dia-
gram—AT—MAIN".
SCIA0765E
Voltage : Battery voltage
Voltage : Battery voltage
SCIA0713E
Continuity should exist.
SCIA0766E

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-355
[EXC.F/EURO-OBD]
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3.CHECK LAMP CIRCUIT
1. Turn ignition switch to “OFF” position.
2. Check resistance between TCM terminals 13 and 10, 19.
3. Reinstall any part removed.
OK or NG
OK >> GOTO4
NG >> Check the following items:
lO/D OFF indicator lamp.
Refer toDI-10, "
Meter/Gauge Operation and Odo/Trip
Meter Segment Check in Diagnosis Mode",
“METERS AND GAUGES”.
lHarness and fuse for short or open between ignition
switch and O/D OFF indicator lamp (Main harness)
Refer toPG-2, "
POWER SUPPLY ROUTING".
lHarness for short or open between O/D OFF indicator lamp and TCM.
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.
2. Engine Cannot Be Started In “P” and “N” PositionECS004V3
SYMPTOM:
lEngine cannot be started with selector lever in “P” or “N” position.
lEngine 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?
Wi th ou t C O N S U LT-I I
Does self-diagnosis show damage to PNP switch circuit?
Ye s o r N o
Yes >> Check PNP switch circuit. Refer to “21. TCM Self-diag-
nosis Does Not Activate (PNP& Overdrive Control
switches, and Throttle Position sensor Circuit Checks)”,
AT-382, "
21. TCM Self-diagnosis Does Not Activate
(PNP & Overdrive Control Switches, and Throttle Posi-
tion Sensor Circuit Checks)".
No >> GOTO2Resistance : 50 - 100W
SCIA0767E
SCIA0706E

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-375
[EXC.F/EURO-OBD]
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3.DETECT MALFUNCTIONING ITEM
1. Remove control valve. Refer toAT-453, "
Installation".
2. Check following items:
–Torque converter clutch control valve
–Torque converter relief valve
–Torque converter clutch solenoid valve
–Pilot valve
–Pilot filter
OK or NG
OK >> GOTO4
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.
13. 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 toAT-432,
"ENGINE SPEED SIGNAL"(Except for Euro-OBD/AT-
147, "DTC P0725 ENGINE SPEED SIGNAL"(Euro-
OBD).
No >> GOTO2
2.CHECKA/TFLUIDCONDITION
1. Remove oil pan.
2. Check A/T fluid condition.
OK or NG
OK >> GOTO3
NG >> GOTO5
SCIA0773E
SAT171B

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-377
[EXC.F/EURO-OBD]
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Lock-up is not released when accelerator pedal is released.
1.CHECK THROTTLE POSITION SENSOR* CIRCUIT
*: This sensor means accelerator pedal position (app) senror.
With CONSULT-II
Does “TCM INPUT SIGNALS” in “DATA MONITOR” show damage throttle position sensor circuit?
Without CONSULT-II
Does self-diagnosis show damage to throttle position sensor circuit?
Ye s o r N o
Yes >> Check throttle position sensor circuit. Refer to “21. TCM
Self-diagnosis Does Not Activate (PNP & Overdrive
Control switches, and Throttle Position Sensor )”,AT-
382, "21. TCM Self-diagnosis Does Not Activate (PNP &
Overdrive Control Switches, and Throttle Position Sen-
sor Circuit Checks)".
No >> GOTO2
2.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.
15. Engine Speed Does Not Return To Idle (Light Braking D4®D3)ECS004VG
SYMPTOM:
lEngine speed does not smoothly return to idle when A/T shifts from D4to D3.
lVehicle does not decelerate by engine brake when turning overdrive control switch OFF.
lVehicle 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 toAT-
416, "OVERRUN CLUTCH SOLENOID VALVE"
(Except for Euro-OBD)/AT - 2 0 8 , "DTC P1760 OVERRUN
CLUTCH SOLENOID VALVE"(Euro-OBD).
No >> GOTO2
SAT367J
SCIA0774E

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-381
[EXC.F/EURO-OBD]
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19.A/TDoesNotShift:22®11, When Selector Lever “2”®“1” PositionECS004VK
SYMPTOM:
A/T does not shift from 2
2to 11when changing selector lever from “2” to “1” 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 “21. TCM Self-diag-
nosis Does Not Activate (PNP & Overdrive Control
switches, and Throttle Position Sensor Circuit Checks)”,
AT-382, "
21. TCM Self-diagnosis Does Not Activate
(PNP & Overdrive Control Switches, and Throttle Posi-
tion Sensor Circuit Checks)".
No >> GOTO2
2.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.
20. Vehicle Does Not Decelerate By Engine BrakeECS004VL
SYMPTOM:
Vehicle does not decelerate by engine brake when shifting from 2
2(12)to11.
1.CHECK SYMPTOM
Is 6. Vehicle Does Not Creep Backward In “R” Position OK?
Ye s o r N o
Yes >> Go to 15. Engine Speed Does Not Return To Idle (Light Braking D4®D3),AT - 3 7 7 , "15. Engine
Speed Does Not Return To Idle (Light Braking D4®D3)".
No >> Go to 6. Vehicle Does Not Creep Backward In “R” Position,AT-359, "
6. Vehicle Does Not Creep
Backward In“R”Position".
SCIA0706E
SAT778B

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-383
[EXC.F/EURO-OBD]
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DIAGNOSTIC PROCEDURE
1.CHECK PNP SWITCH CIRCUIT (WITH CONSULT-II)
With CONSULT-II
1. Turn ignition switch to “ON” position.
(Do not start engine.)
2. Select “TCM INPUT SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Read out “P/N”, “R”, “D”, “2” and “1” position switches moving selector lever to each position.
Check that the signal of the selector lever position is indicated
properly.
OK or NG
OK >> GOTO3
NG >> Check the following items:
lPNP switch (Refer to “Component Inspection”,AT-
387, "COMPONENT INSPECTION".)
lHarness for short or open between ignition switch and
PNP switch (Main harness)
lHarness for short or open between PNP switch and
TCM (Main harness)
lDiode (P, N positions)
2.CHECK PNP SWITCH CIRCUIT (WITHOUT CONSULT-II)
Without CONSULT-II
1. Turn ignition switch to “ON” position. (Do not start engine.)
2. Check voltage between TCM terminals 26, 27, 34, 35, 36 and
ground while moving selector lever through each position.
OK or NG
OK >> GOTO4
NG >> Check the following items:
lPNP switch (Refer to “Component Inspection”,AT-
387, "COMPONENT INSPECTION".)
lHarness for short or open between ignition switch and
PNP switch (Main harness)
lHarness for short or open between PNP switch and TCM (Main harness)
lDiode (P, N positions)
SAT701J
Vo l ta g e :
B : Battery voltage
0:0V
Lever
positionTe r m i n a l N o .
36 35 34 27 26
P, N B 0 0 0 0
R0 B000
D0 0 B00
2000B0
10000B
SCIA0777E

AT-384
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSES FOR SYMPTOMS
3.CHECK OVERDRIVE CONTROL SWITCH CIRCUIT (WITH CONSULT-II)
With CONSULT-II
1. Turn ignition switch to “ON” position.
(Do not start engine.)
2. Select “TCM INPUT SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Read out “OVERDRIVE SWITCH”.
Check the signal of the overdrive control switch is indicated properly.
(Overdrive control switch “ON” displayed on CONSULT-II means
overdrive “OFF”.)
OK or NG
OK >> GOTO5
NG >> Check the following items:
lOverdrive control switch (Refer to “Component
Inspection”,AT-387, "
COMPONENT INSPECTION".)
lHarness for short or open between TCM and over-
drive control switch (Main harness)
lHarness of ground circuit for overdrive control switch
(Main harness) for short or openSAT645J

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-385
[EXC.F/EURO-OBD]
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4.CHECK OVERDRIVE CONTROL SWITCH CIRCUIT (WITHOUT CONSULT-II)
Without CONSULT-II
1. Turn ignition switch to “ON” position.
(Do not start engine.)
2. Check voltage between TCM terminal 22 and ground when overdrive control switch is “ON” and “OFF”.
OK or NG
OK >> GOTO6
NG >> Check the following items:
lOverdrive control switch (Refer to “Component Inspection”,AT-387, "COMPONENT INSPEC-
TION".)
lHarness for short or open between TCM and overdrive control switch (Main harness)
lHarness of ground circuit for overdrive control switch (Main harness) for short or open Vo l ta g e :
Switch position “ON” :
Battery voltage
Switch position “OFF” :
1V or less
SCIA0778E

AT-386
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSES FOR SYMPTOMS
5.CHECK THROTTLE POSITION SENSOR* CIRCUIT (WITH CONSULT-II)
*:This sensor meaus accelerator pedal position (app) sensor.
With CONSULT-II
1. Refer to "SELF-DIAGNOSTIC PROCEDURE (With CONSULT-II)",AT-273, "
Diagnostic Procedure Without
CONSULT-II".—Except for Euro-OBD/Refer to "TCM SELF-DIAGNOSTIC PROCEDURE (With CON-
SULT-II)",AT - 5 1 , "
TCM SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)"—Euro-OBD
2. Turn ignition switch to "ON" position.
(Do not start engine.)
3. Select "TCM INPUT SIGNALS" in "DATA MONITOR "mode for "A/T with CONSULT-II.
4. Read out "THRTL POS SEN" sensor" depressing and releasing acclerator pedal.
Check the signal of throttle position sensor is indicated properly.
OK or NG
OK >> GOTO7
NG >> Check the following items:
lThrottle position sensor — Refer to “Component Inspection”,AT-453, "Installation".
lHarness for short or open between ignition switch and throttle position sensor (Main harness)
lHarness for short or open between throttle position sensor and TCM (Main harness)
SAT014K
SAT614J