Nissan X-Trail 32. Manual — part 2078
TM-270
< SYSTEM DESCRIPTION >
[CVT: RE0F10D]
DIAGNOSIS SYSTEM (TCM)
DIAGNOSIS SYSTEM (TCM)
DIAGNOSIS DESCRIPTION
DIAGNOSIS DESCRIPTION : 1 Trip Detection Diagnosis and 2 Trip Detection Diagno-
sis
INFOID:0000000010622465
NOTE:
“Start the engine and turn OFF the ignition switch after warm-up.” This is defined as 1 trip.
1 TRIP DETECTION DIAGNOSIS
When initial malfunction is detected, TCM memorizes DTC. In these diagnoses, some illuminate MIL and
some do not. Refer to
2 TRIP DETECTION DIAGNOSIS
When initial malfunction is detected, TCM memorizes DTC of the 1st trip. MIL does not light at this stage. <1
trip>
If the same malfunction is detected again in next driving, TCM memorizes DTC. When DTC is memorized, MIL
lights. <2 trip>
“Trip” of the “2 trip detection diagnosis” indicates the driving mode that executes self-diagnosis during driving.
×
: Check possible
—: Check not possible
DIAGNOSIS DESCRIPTION : DTC and DTC of 1st Trip
INFOID:0000000010622466
2 TRIP DETECTION DIAGNOSIS THAT ILLUMINATES MIL
• The DTC number of the 1st trip is the same as the DTC number.
• When a malfunction is detected at the 1st trip, TCM memorizes DTC of the 1st trip. MIL does not light at this
stage. If the same malfunction is not detected at the 2nd trip (conforming to necessary driving conditions),
DTC at the 1st trip is erased from TCM. If the same malfunction is detected at the 2nd trip, TCM memorizes
DTC and MIL lights at the same time.
• The DTC of the 1st trip is specified in Service $01 of SAE J1979/ISO 15031-5. Since detection of DTC at the
1st trip does not illuminate MIL, warning for a problem is not given to a driver.
• For procedure to delete DTC and 1st trip DTC from TCM, refer to
• If DTC of the 1st trip is detected, it is necessary to check the cause according to the “Diagnosis flow”. Refer
.
DIAGNOSIS DESCRIPTION : Malfunction Indicator Lamp (MIL)
INFOID:0000000010622467
• TCM not only detects DTC, but also sends the MIL signal to ECM through CAN communication. ECM sends
the MIL signal to the combination meter through CAN communication according to the signal, and illumi-
nates MIL.
• For malfunction indicator lamp (MIL) description, refer to
EC-78, "DIAGNOSIS DESCRIPTION : Malfunction
(MR20DD),
EC-487, "DIAGNOSIS DESCRIPTION : Malfunction Indicator Lamp
(QR25DE).
DIAGNOSIS DESCRIPTION : Counter System
INFOID:0000000010622468
RELATION BETWEEN DTC AT 1ST TRIP/DTC/MIL AND DRIVING CONDITIONS (FOR 2 TRIP DE-
TECTION DIAGNOSIS THAT ILLUMINATES MIL)
• When initial malfunction is detected, TCM memorizes DTC of the 1st trip. MIL does not light at this stage.
• If the same malfunction is detected at the 2nd trip, TCM memorizes DTC and MIL lights at the same time.
• Then, MIL goes after driving the vehicle for 3 trips under “Driving condition B” without malfunction.
Item
DTC at the 1st trip
DTC
MIL
Display at the
1st trip
Display at the
2nd trip
Display at the
1st trip
Display at the
2nd trip
Illumination at
the 1st trip
Illumination at
the 2nd trip
1 trip detection diagnosis
(Refer to
)
—
—
×
—
×
—
2 trip detection diagnosis
(Refer to
)
×
—
—
×
—
×
DIAGNOSIS SYSTEM (TCM)
TM-271
< SYSTEM DESCRIPTION >
[CVT: RE0F10D]
C
E
F
G
H
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J
K
L
M
A
B
TM
N
O
P
• DTC is displayed until 40 trips of “Driving condition A” are satisfied without detecting the same malfunction.
DTC is erased when 40 trips are satisfied.
• When the self-diagnosis result is acceptable at the 2nd trip (conforming to driving condition B), DTC of the
1st trip is erased.
COUNTER SYSTEM LIST
DRIVING CONDITION
Driving condition A
Driving condition A is the driving condition that provides warm-up.
In specific, count-up is performed when all of the following conditions are satisfied.
• Engine speed is 400 rpm or more.
• After start of the engine, the water temperature increased by 20
°
C (36
°
F) or more.
• Water temperature was 70
°
C (158
°
F) or more.
• The ignition switch was changed from ON to OFF.
NOTE:
• If the same malfunction is detected regardless of the driving condition, reset the A counter.
• When the above is satisfied without detecting the same malfunction, count up the A counter.
• When MIL goes off due to the malfunction and the A counter reaches 40, the DTC is erased.
Driving condition B
Driving condition B is the driving condition that performs all diagnoses once.
In specific, count-up is performed when all of the following conditions are satisfied.
• Engine speed is 400 rpm or more.
• Water temperature was 70
°
C (158
°
F) or more.
• In closed loop control, vehicle speed of 70 – 120 km/h (43 – 75 MPH) continued for 60 seconds or more.
• In closed loop control, vehicle speed of 30 – 60 km/h (19 – 37 MPH) continued for 10 seconds or more.
• In closed loop control, vehicle speed of 4 km/h (2 MPH) or less and idle determination ON continued for 12
seconds or more.
• After start of the engine, 22 minutes or more have passed.
• The condition that the vehicle speed is 10 km/h (6 MPH) or more continued for 10 seconds or more in total.
• The ignition switch was changed from ON to OFF.
NOTE:
• If the same malfunction is detected regardless of the driving condition, reset the B counter.
• When the above is satisfied without detecting the same malfunction, count up the B counter.
• When the B counter reaches 3 without malfunction, MIL goes off.
• When the B counter is counted once without detecting the same malfunction after TCM memorizes DTC of
the 1st trip, DTC of the 1st trip is erased.
Item
Driving condition
Trip
MIL (OFF)
B
3
DTC (clear)
A
40
DTC at 1st trip (clear)
B
1
TM-272
< SYSTEM DESCRIPTION >
[CVT: RE0F10D]
DIAGNOSIS SYSTEM (TCM)
TIME CHART
CONSULT Function
INFOID:0000000010622469
APPLICABLE ITEM
JSDIA1868GB
Conditions
Function
Work Support
The settings for ECU functions can be changed.
Self Diagnostic Results
The ECU self diagnostic results are displayed.
Data Monitor
The ECU input/output data is displayed in real time.
ECU Identification
The ECU part number is displayed.
CALIB DATA
The calibration data status of TCM can be checked.
DIAGNOSIS SYSTEM (TCM)
TM-273
< SYSTEM DESCRIPTION >
[CVT: RE0F10D]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
SELF DIAGNOSTIC RESULTS
.
DTC at 1st trip and method to read DTC
• DTC (P0705, P0712, P0715, etc.) is specified by SAE J2012/ISO 15031-6.
• DTC and DTC at 1st trip are displayed on “Self Diagnostic results” of CONSULT.
When DTC is currently detected, “CRNT” is displayed. If “PAST” is displayed, it shows a malfunction
occurred in the past. The trip number of drive without malfunction of concerned DTC can be confirmed with
“IGN counter” inside “FFD”.
• When the DTC at the 1st trip is detected, “1t” is displayed.
DTC deletion method
NOTE:
If the ignition switch is left ON after repair, turn OFF the ignition switch and wait for 10 seconds or more. Then,
turn the ignition ON again. (Engine stop)
1.
Touch “TRANSMISSION” of CONSULT.
2.
Touch “Self Diagnostic Result”.
3.
Touch “Erase”. (DTC memorized in TCM is erased.)
IGN counter
The ignition counter is displayed in “FFD” and the number of times of satisfied “Driving condition A” is dis-
played after normal recovery of DTC. Refer to
TM-270, "DIAGNOSIS DESCRIPTION : Counter System"
.
• If malfunction (DTC) is currently detected, “0” is displayed.
• After normal recovery, every time “Driving condition A” is satisfied, the display value increases from 1
→
2
→
3...38
→
39.
• When MIL turns OFF due to the malfunction and the counter reaches 40, the DTC is erased.
NOTE:
The counter display of “40” cannot be checked.
DATA MONITOR
NOTE:
The following table includes information (items) inapplicable to this vehicle. For information (items) applicable
to this vehicle, refer to CONSULT display items.
Monitored item
(Unit)
Remarks
VSP SENSOR
(km/h or mph)
Displays the vehicle speed calculated from the CVT output shaft speed.
ESTM VSP SIG
(km/h or mph)
Displays the vehicle speed signal (ABS) received through CAN communication.
INPUT SPEED SENSOR
(rpm)
Displays the input speed calculated from the pulse signal of the input speed sensor.
PRI SPEED SEN
(rpm)
Displays the primary pulley speed calculated from the pulse signal of the primary
speed sensor.
SEC REV SENSOR
(rpm)
Displays the secondary pulley speed calculated from the pulse signal of the output
speed sensor.
ENG SPEED SIG
(rpm)
Displays the engine speed received through CAN communication.
SEC PRESSURE SEN
(V)
Displays the signal voltage of the secondary pressure sensor.
PRI PRESSURE SEN
(V)
Displays the signal voltage of the primary pressure sensor.
ATF TEMP SEN
(V)
Displays the signal voltage of the CVT fluid temperature sensor.
G SENSOR
(G)
Displays the decel G signal received through CAN communication.
VIGN SEN
(V)
Displays the battery voltage applied to TCM.
PVING VOLT
(V)
Displays the backup voltage of TCM.
VEHICLE SPEED
(km/h or mph)
Displays the vehicle speed recognized by TCM.
INPUT REV
(rpm)
Displays the input shaft speed of CVT recognized by TCM.
PRI SPEED
(rpm)
Displays the primary pulley speed recognized by TCM.
SEC SPEED
(rpm)
Displays the secondary pulley speed recognized by TCM.
ENG SPEED
(rpm)
Displays the engine speed recognized by TCM.
SLIP REV
(rpm)
Displays the speed difference between the input shaft speed of CVT and the engine
speed.
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