Page 2329 of 3833
![NISSAN X-TRAIL 2001 Service Repair Manual ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
AT-251
[EXC.F/EURO-OBD]
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CAN circuit 3CAN CIRC 3
[OK/UNKWN]—X—
CAN circuit 4CAN CIRC 4
[OK/UNKWN]—X—
CAN circuit 5CAN CIRC 5
[OK NISSAN X-TRAIL 2001 Service Repair Manual ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
AT-251
[EXC.F/EURO-OBD]
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CAN circuit 3CAN CIRC 3
[OK/UNKWN]—X—
CAN circuit 4CAN CIRC 4
[OK/UNKWN]—X—
CAN circuit 5CAN CIRC 5
[OK](/manual-img/5/57405/w960_57405-2328.png)
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
AT-251
[EXC.F/EURO-OBD]
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CAN circuit 3CAN CIRC 3
[OK/UNKWN]—X—
CAN circuit 4CAN CIRC 4
[OK/UNKWN]—X—
CAN circuit 5CAN CIRC 5
[OK/UNKWN]—X—
Throttle position THROTTLE
POSI
[/8]—— X
●Throttle position data,
used for computation
by TCM, is displayed.●A specific value used
for control is displayed
if fail-safe is activated
due to error.
Stop lamp switch BRAKE SW
[ON/OFF]
X——
●ON/OFF status is dis-
played.
ON... Brake pedal is
depressed.
OFF... Brake pedal is
released.
Line pressure duty LINE PRES DTY
[%]
—— X
●Control value of line
pressure solenoid
valve, computed by
TCM from each input
signal, is displayed.
Torque converter
clutch solenoid
valve dutyTCC S/V DUTY
[%]
—— X
●Control value of torque
converter clutch sole-
noid valve, computed
by TCM from each
input signal, is dis-
played.
Shift solenoid
valve ASHIFT S/V A
[ON/OFF]
—— X
●Control value of shift
solenoid valve A, com-
puted by TCM from
each input signal, is
displayed.Control value of sole-
noid is displayed even if
solenoid circuit is dis-
connected.
The OFF signal is dis-
played if solenoid circuit
is shorted. Shift solenoid
valve BSHIFT S/V B
[ON/OFF]
—— X
●Control value of shift
solenoid valve B, com-
puted by TCM from
each input signal, is
displayed.
Overrun clutch
solenoid valveOVERRUN/C S/
V
[ON/OFF]
—— X
●Control value of over-
run clutch solenoid
valve computed by
TCM from each input
signal is displayed.
Self-diagnosis dis-
play lamp
(O/D OFF indica-
tor lamp)SELF-D DP LMP
[ON/OFF]
—— X
●Control status of O/D
OFF indicator lamp is
displayed.
Voltage [V] — — — Value measured by voltage probe is displayed.
Frequency [Hz] — — —Value measured by pulse probe is displayed. If mea-
s u re me nt is im pos si bl e, “# ” si gn i s di sp la y ed. “ # ” si gn
is also displayed at the final data value until the mea-
surement result is obtained. Item Displaymove to center Monitor items
Description Remarks
TCM
Input
signalsCAN
comm
sig-
nalsMain
signalsSelection
from
menu
Page 2330 of 3833
AT-252
[EXC.F/EURO-OBD]
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
X: Applicable —: Not applicable : Option
HOW TO ERASE SELF-DIAGNOSTIC RESULTS (WITH CONSULT-II)
1. If the ignition switch stays “ON” after repair work, be sure to turn
ignition switch “OFF” once. Wait for at least 3 seconds and then
turn it “ON” again.
2. Turn CONSULT-II “ON”, and touch “A/T”.
3. Touch “SELF-DIAG RESULTS”.
4. Touch “ERASE”. (The self-diagnostic results will be erased.)
DUTY-HI — — —
Duty cycle value for measurement probe is dis-
played.
DUTY-LOW — — —
PLS WIDTH-HI — — —
Measured pulse width of measurement probe is dis-
played.
PLS WIDTH-LOW — — —Item Displaymove to center Monitor items
Description Remarks
TCM
Input
signalsCAN
comm
sig-
nalsMain
signalsSelection
from
menu
SAT014K
SAT971J
SAT970J
Page 2331 of 3833
![NISSAN X-TRAIL 2001 Service Repair Manual ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
AT-253
[EXC.F/EURO-OBD]
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Diagnostic Procedure Without CONSULT-IIECS004NX
SELF-DIAGNOSTIC PROCEDURE (WITHOUT CONSULT-II)
1.CHECK O/D OFF NISSAN X-TRAIL 2001 Service Repair Manual ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
AT-253
[EXC.F/EURO-OBD]
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Diagnostic Procedure Without CONSULT-IIECS004NX
SELF-DIAGNOSTIC PROCEDURE (WITHOUT CONSULT-II)
1.CHECK O/D OFF](/manual-img/5/57405/w960_57405-2330.png)
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
AT-253
[EXC.F/EURO-OBD]
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Diagnostic Procedure Without CONSULT-IIECS004NX
SELF-DIAGNOSTIC PROCEDURE (WITHOUT CONSULT-II)
1.CHECK O/D OFF INDICATOR LAMP
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch to “OFF” position.
Wait 5 seconds.
3. Turn ignition switch to “ACC” position.
4. Set overdrive control switch to “ON” position.
5. Move selector lever to “P” position.
6. Turn ignition switch to “ON” position. (Do not start engine.)
7. Does O/D OFF indicator lamp come on for about 2 seconds?
Ye s o r N o
Ye s > > G O T O 2 .
No >> GO TO AT- 3 1 2 , "
O/D OFF Indicator Lamp Does Not
Come On" .
2.JUDGEMENT PROCEDURE STEP 1
1. Turn ignition switch to “OFF” position.
2. Turn ignition switch to “ACC” position.
3. Move selector lever to “D” position.
4. Set overdrive control switch to “OFF” position.
5. Turn ignition switch to “ON” position. (Do not start engine.)
Wait more than 2 seconds after turning ignition switch “ON”.
>> GO TO 3.
SAT774B
SCIA0693E
SAT653E
Page 2332 of 3833
AT-254
[EXC.F/EURO-OBD]
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
3. JUDGEMENT PROCEDURE STEP 2
1. Move selector lever to “2” position.
2. Set overdrive control switch to “ON” position.
>> GO TO 4.
4. JUDGEMENT PROCEDURE STEP 3
1. Move selector lever to “1” position.
2. Set overdrive control switch to “OFF” position.
>> GO TO 5.
5. JUDGEMENT PROCEDURE STEP 4
1. Depress accelerator pedal fully and release it.
>> GO TO 6.
6. CHECK SELF-DIAGNOSIS CODE
Check O/D OFF indicator lamp. Refer to AT- 2 5 5 , "
JUDGEMENT OF
SELF-DIAGNOSIS CODE" .
>>DIAGNOSIS END
SAT780B
SAT781B
SAT981F
SCIA0693E
Page 2333 of 3833
![NISSAN X-TRAIL 2001 Service Repair Manual ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
AT-255
[EXC.F/EURO-OBD]
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JUDGEMENT OF SELF-DIAGNOSIS CODE
O/D OFF indicator lamp:
All judgement flickers are the same.
All circuits that NISSAN X-TRAIL 2001 Service Repair Manual ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
AT-255
[EXC.F/EURO-OBD]
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JUDGEMENT OF SELF-DIAGNOSIS CODE
O/D OFF indicator lamp:
All judgement flickers are the same.
All circuits that](/manual-img/5/57405/w960_57405-2332.png)
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
AT-255
[EXC.F/EURO-OBD]
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JUDGEMENT OF SELF-DIAGNOSIS CODE
O/D OFF indicator lamp:
All judgement flickers are the same.
All circuits that can be confirmed by self-diagnosis are OK.1st judgement flicker is longer than others.
Revolution sensor circuit is short-circuited or disconnected.
Go to VEHICLE SPEED SENSOR·A/T (REVOLUTION SEN-
SOR).
Refer to AT-353
2nd judgement flicker is longer than others.
Vehicle speed sensor circuit is short-circuited or disconnected.
Go to VEHICLE SPEED SENSOR·MTR.
Refer to AT- 3 5 83rd judgement flicker is longer than others.
Accelerator pedal position (APP) sensor circuit is short-circuited
or disconnected.
Go to ACCELERATOR PEDAL POSITION (APP) SENSOR.
Refer to AT-362
4th judgement flicker is longer than others.
Shift solenoid valve A circuit is short-circuited or disconnected.
Go to SHIFT SOLENOID VALVE A.
Refer to AT- 3 6 75th judgement flicker is longer than others.
Shift solenoid valve B circuit is short-circuited or disconnected.
Go to SHIFT SOLENOID VALVE B.
Refer to AT-372
SCIA0694ESCIA0695E
SCIA0696ESCIA0697E
SCIA0698ESCIA0699E
Page 2334 of 3833
AT-256
[EXC.F/EURO-OBD]
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
6th judgement flicker is longer than others.
Overrun clutch solenoid valve circuit is short-circuited or discon-
nected.
Go to OVERRUN CLUTCH SOLENOID VALVE.
Refer to AT-3777th judgement flicker is longer than others.
Torque converter clutch solenoid valve circuit is short-circuited or
disconnected.
Go to TORQUE CONVERTER CLUTCH SOLENOID VALVE.
Refer to AT- 3 8 1
8th judgement flicker is longer than others.
A/T fluid temperature sensor is disconnected or TCM power
source circuit is damaged.
Go to BATT/FLUID TEMP SEN(A/T FLUID TEMP SENSOR
CIRCUIT AND TCM POWER SOURCE).
Refer to AT-3869th judgement flicker is longer than others.
Engine speed signal circuit is short-circuited or disconnected.
Go to ENGINE SPEED SIGNAL.
Refer to AT- 3 9 2
O/D OFF indicator lamp:
SCIA0700ESCIA0701E
SCIA0702ESCIA0703E
Page 2335 of 3833
![NISSAN X-TRAIL 2001 Service Repair Manual ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
AT-257
[EXC.F/EURO-OBD]
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t1 = 2.5 seconds t2 = 2.0 seconds t3 = 1.0 second t4 = 1.0 second
HOW TO ERASE SELF-DIAGNOSTIC RESULTS (WIT NISSAN X-TRAIL 2001 Service Repair Manual ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
AT-257
[EXC.F/EURO-OBD]
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t1 = 2.5 seconds t2 = 2.0 seconds t3 = 1.0 second t4 = 1.0 second
HOW TO ERASE SELF-DIAGNOSTIC RESULTS (WIT](/manual-img/5/57405/w960_57405-2334.png)
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
AT-257
[EXC.F/EURO-OBD]
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t1 = 2.5 seconds t2 = 2.0 seconds t3 = 1.0 second t4 = 1.0 second
HOW TO ERASE SELF-DIAGNOSTIC RESULTS (WITHOUT CONSULT-II)
1. If the ignition switch stays “ON” after repair work, be sure to turn ignition switch “OFF” once. Wait for at
least 3 seconds and then turn it “ON” again.
2. Perform “SELF-DIAGNOSTIC PROCEDURE (Without CONSULT-II)”. Refer to AT- 2 5 3 , "
Diagnostic Proce-
dure Without CONSULT-II" (EXC. for EURO-OBD).
3. Turn ignition switch “OFF”. (The self-diagnostic results will be erased.)
10th judgement flicker is longer than others.
Line pressure solenoid valve circuit is short-circuited or discon-
nected.
Go to LINE PRESSURE SOLENOID VALVE.
Refer to AT- 3 9 611th judgement flicker is longer than others.
CAN communication line is damaged.
Go to CAN COMMUNICATION LINE.
Refer to AT-403
Lamp comes OFF.
PNP switch, overdrive control switch, closed throttle position sig-
nal or wide-open throttle position signal circuit is disconnected or
TCM is damaged.
(Because closed throttle position signal and wide-open throttle
position signal are input via CAN communication line malfunction
may continue after self-diagnosis.)
Go to TCM Self-diagnosis Does Not Activate.
Refer to AT- 3 4 4 Flickers as shown below.
Battery power is low.
Battery has been disconnected for a long time.
Battery is connected conversely.
(When reconnecting TCM connectors.—This is a problem.) O/D OFF indicator lamp:
SCIA0704ESCIA0705E
SCIA0706ESAT804H
Page 2336 of 3833
![NISSAN X-TRAIL 2001 Service Repair Manual AT-258
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSIS — INTRODUCTION
TROUBLE DIAGNOSIS — INTRODUCTION
PFP:00000
IntroductionECS004TF
The TCM receives a signal from the vehicle speed sensor, throttle
position NISSAN X-TRAIL 2001 Service Repair Manual AT-258
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSIS — INTRODUCTION
TROUBLE DIAGNOSIS — INTRODUCTION
PFP:00000
IntroductionECS004TF
The TCM receives a signal from the vehicle speed sensor, throttle
position](/manual-img/5/57405/w960_57405-2335.png)
AT-258
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSIS — INTRODUCTION
TROUBLE DIAGNOSIS — INTRODUCTION
PFP:00000
IntroductionECS004TF
The TCM receives a signal from the vehicle speed sensor, throttle
position sensor or PNP switch and provides shift control or lock-up
control via A/T solenoid valves.
Input and output signals must always be correct and stable in the
operation of the A/T system. The A/T system must be in good oper-
ating condition and be free of valve seizure, solenoid valve malfunc-
tion, etc.
It is much more difficult to diagnose a problem that occurs intermit-
tently rather than continuously. Most intermittent problems are
caused by poor electric connections or improper wiring. In this case,
careful checking of suspected circuits may help prevent the replace-
ment of good parts.
A visual check only, may not find the cause of the problems. A road
test with CONSULT-II or a circuit tester connected should be per-
formed. Follow the “Work Flow”. Refer to AT- 6 0
.
Before undertaking actual checks, take a few minutes to talk with a
customer who approaches with a drive ability complaint. The cus-
tomer can supply good information about such problems, especially
intermittent ones. Find out what symptoms are present and under
what conditions they occur. A “Diagnostic Worksheet” like the exam-
ple (AT- 5 7
) should be used.
Start your diagnosis by looking for “conventional” problems first. This
will help troubleshoot drive ability problems on an electronically con-
trolled engine vehicle.
Also check related Service bulletins for information.
SAT631IA
SAT632I
SEF234G