2001 NISSAN X-TRAIL engine control

AT-230
[EURO-OBD]
TROUBLE DIAGNOSES FOR SYMPTOMS
A/T Does Not Hold Lock-up Condition
ECS004T6
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- 1 2 7 ,
"DTC P0725 ENGINE SPEED SIGNAL" (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

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-233
[EURO-OBD]
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Engine Speed Does Not Return To Idle (Light Braking D4→ D3 )ECS004T8
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-
185, "DTC P1760 OVERRUN CLUTCH SOLENOID
VA LV E" (Euro-OBD).
No >> GO TO 2.
2.CHECK ACCELERATOR PEDAL POSITION (APP) SENSOR
Check accelerator pedal position (APP) sensor. Refer to AT- 1 8 0 ,
"DTC P1705 ACCELERATOR PEDAL POSITION (APP) SENSOR"
— Euro-OBD
OK or NG
OK >> GO TO 3.
NG >> Repair or replace accelerator pedal position (APP) sen-
sor. (AT- 1 8 0 , "
DTC P1705 ACCELERATOR PEDAL
POSITION (APP) SENSOR" : Euro-OBD)
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

AT-240
[EURO-OBD]
TROUBLE DIAGNOSES FOR SYMPTOMS
Vehicle Does Not Decelerate By Engine Brake
ECS004TD
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-241, "TCM Self-
diagnosis Does Not Activate" .
No >> GO TO 2.
2. CHECK CONTROL CABLE
Check control cable. Refer to AT- 4 1 6 , "
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- 1 2 2 , "DTC P0720 VEHICLE SPEED
SENSOR·A/T (REVOLUTION SENSOR)" (Except for Euro-OBD)./ Refer to AT- 3 5 8 , "DTC VEHICLE SPEED
SENSOR MTR" and AT-199, "DTC VEHICLE SPEED SENSOR MTR" (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

AT-242
[EURO-OBD]
TROUBLE DIAGNOSES FOR SYMPTOMS
DESCRIPTION
●PNP switch
The PNP switch assembly includes a transmission position
switch. The transmission position switch detects the selector
lever position and sends a signal to the TCM.
●Overdrive control switch
Detects the overdrive control switch position (ON or OFF) and
sends a signal to the TCM.
●Closed throttle position signal and wide-open throttle position
signal
ECM judges throttle opening based on a signal from accelerator
pedal position sensor, and sends the signal via CAN communi-
cation to TCM.
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 >> GO TO 3.
NG >> Check the following items:
●PNP switch (Refer to AT- 2 4 6 , "COMPONENT
INSPECTION" .)
●Harness for short or open between ignition switch and
PNP switch
●Harness for short or open between PNP switch and
TCM
●Diode (P, N positions)
SCIA0752E
SCIA0776E
PBIB0498E
SAT701J

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-243
[EURO-OBD]
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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 >> GO TO 4.
NG >> Check the following items:
●PNP switch (Refer to AT- 2 4 6 , "COMPONENT
INSPECTION" .)
●Harness for short or open between ignition switch and
PNP switch
●Harness for short or open between PNP switch and TCM
●Diode (P, N positions)
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 >> GO TO 5.
NG >> Check the following items:
●Overdrive control switch (Refer to AT- 2 4 6 , "COMPO-
NENT INSPECTION" .)
●Harness for short or open between TCM and over-
drive control switch
●Harness of ground circuit for overdrive control switch
for short or open Vo l t a g e :
B: Battery voltage
0: 0V
Lever positionTerminal No.
36 35 34 27 26
P, N B 0 0 0 0
R0B000
D00B00
2000B0
10000B
SCIA0777E
SAT645J

AT-244
[EURO-OBD]
TROUBLE DIAGNOSES FOR SYMPTOMS
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 >> GO TO 6.
NG >> Check the following items:
●Overdrive control switch (Refer to AT-246, "COMPONENT INSPECTION" .)
●Harness for short or open between TCM and overdrive control switch
●Harness of ground circuit for overdrive control switch for short or open Voltage:
Switch position “ON”: Battery voltage
Switch position “OFF”: 1V or less
SCIA0778E

AT-248
[EXC.F/EURO-OBD]
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
CAUTION:
If malfunction is detected in multiple systems including CAN communication line, CAN communication line trouble diagnosis
shall be performed first.Revolution sensor VHCL SPEED SEN·A/T
●TCM does not receive the proper voltage sig-
nal from the sensor.
Vehicle speed sensor
(Meter)VHCL SPEED SEN·MTR
●TCM does not receive the proper voltage sig-
nal from the sensor.
Accelerator pedal posi-
tion (APP) sensorTHROTTLE POSI SEN
●TCM receives an excessively low or high volt-
age from the sensor.
Shift solenoid valve A SHIFT SOLENOID/V A
●TCM detects an improper voltage drop when it
tries to operate the solenoid valve.
Shift solenoid valve B SHIFT SOLENOID/V B
●TCM detects an improper voltage drop when it
tries to operate the solenoid valve.
Overrun clutch solenoid
valveOVERRUN CLUTCH S/V
●TCM detects an improper voltage drop when it
tries to operate the solenoid valve.
T/C clutch solenoid valve T/C CLUTCH SOL/V
●TCM detects an improper voltage drop when it
tries to operate the solenoid valve.
A/T fluid temperature sen-
sorBATT/FLUID TEMP SEN
●TCM receives an excessively low or high volt-
age from the sensor.To be displayed in case
of abnormality and when
no recording is made.
Engine speed signal ENGINE SPEED SIG
●TCM does not receive the proper voltage sig-
nal from the ECM.
Line pressure solenoid
valveLINE PRESSURE S/V
●TCM detects an improper voltage drop when it
tries to operate the solenoid valve.
CAN communication CAN COMM CIRCUIT
●When malfunction is detected in CAN commu-
nication line.
TCM (RAM) CONTROL UNIT (RAM)
●TCM memory (RAM) is malfunctioningRefer to AT-351, "
TCM
TERMINALS AND REF-
ERENCE VALUE"
TCM (ROM) CONTROL UNIT (ROM)●TCM memory (ROM) is malfunctioningRefer to AT-351, "
TCM
TERMINALS AND REF-
ERENCE VALUE"
TCM (EEP ROM) CONT UNIT (EEP ROM)●TCM memory (EEP ROM) is malfunctioning.Refer to AT-351, "
TCM
TERMINALS AND REF-
ERENCE VALUE"
Detected items
(Screen terms for CONSULT-II, “SELF DIAGNOSIS”
test mode)Malfunction is detected when... Remarks
Item Display

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
AT-249
[EXC.F/EURO-OBD]
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DATA MONITOR MODE (A/T)
Item Displaymove to center Monitor items
Description Remarks
TCM
Input
signalsCAN
comm
sig-
nalsMain
signalsSelection
from
menu
Vehicle speed
sensor 1 (A/T)
(Revolution sen-
sor)VHCL/S SE·A/T
[km/h] or [mph]
X——
●Vehicle speed com-
puted from signal of
revolution sensor is
displayed.When racing engine in N
or P with vehicle station-
ary, CONSULT-II data
may not indicate 0 km/h
(0 mph).
Vehicle speed
sensor 2
(Meter)VHCL/S
SE·MTR
[km/h] or [mph]
X——
●Vehicle speed com-
puted from signal of
vehicle speed sensor is
displayed.Vehicle speed display
may not be accurate
under approx. 10 km/h
(6 mph). It may not indi-
cate 0 km/h (0 mph)
when vehicle is station-
ary.
Accelerator pedal
position sensorTHRTL POS
SEN
[V]X——
●Accelerator pedal posi-
tion sensor signal volt-
age is displayed.
A/T fluid tempera-
ture sensorFLUID TEMP SE
[V]
X——
●A/T fluid temperature
sensor signal voltage is
displayed.
●Signal voltage lowers
as fluid temperature
rises.
Battery voltage BATTERY VOLT
[V]X——
●So urce vo ltage of TCM
is displayed.
Engine speed ENGINE SPEED
[rpm]
X—X
●Engine speed, com-
puted from engine
speed signal, is dis-
played.Engine speed display
may not be accurate
under approx. 800 rpm.
It m a y no t i ndi cat e 0 r p m
even when engine is not
running.
Overdrive control
switchOVERDRIVE
SW
[ON/OFF]X——
●ON/OFF state com-
puted from signal of
overdrive control SW is
displayed.
PN position (PNP)
switchPN POSI SW
[ON/OFF]
X——
●ON/OFF state com-
puted from signal of PN
position SW is dis-
played.
R position switch R POSITION SW
[ON/OFF]
X——
●ON/OFF state com-
puted from signal of R
position SW is dis-
played.
D position switch D POSITION SW
[ON/OFF]
X——
●ON/OFF state com-
puted from signal of D
position SW is dis-
played.
2 position switch 2 POSITION SW
[ON/OFF]
X——
●ON/OFF status, com-
puted from signal of 2
position SW, is dis-
played.