Page 3057 of 4555
CAN COMMUNICATION
BRC-9
[ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
*: YD engine models only
TYPE 3
System diagram
Input/output signal chart
T: Transmit R: Receive A/C compressor feedback signal T R
ABS warning lamp signal T R
Accelerator pedal position signal T R
Engine coolant temperature signal T R
Engine speed signal T R R
MI signal T R
Parking brake switch signalRT
Stop lamp switch signal T R
Vehicle speed signalTRR
RT
ASCD SET lamp signal T R
ASCD CRUISE lamp signal T R
Stop lamp switch signal T R
Glow indicator lamp signal* T R
A/C switch signal* R TSignals ECMABS actuator and
electric unit
(control unit)4WD control unit Combination meter
PKIA6457E
Signals ECM TCMABS actuator
and electric unit
(control unit)4WD control
unitCombination
meter
4WD mode indicator lamp signalTR
4WD warning lamp signalTR
A/C compressor feedback signal TR
A/T position indicator lamp signal T R
A/T self-diagnosis signal R T
ABS warning lamp signal T R
Page 3058 of 4555
BRC-10
[ABS]
CAN COMMUNICATION
TYPE 7/TYPE 8
System diagram
Input/output signal chart
T: Transmit R: Receive Accelerator pedal position signal T R
Closed throttle position signal T R
Engine A/T integrated control signalTR
RT
Engine coolant temperature signal TR
Engine speed signal T R R
MI signal TR
O/D OFF indicator signal T R
Output shaft revolution signal R T
Overdrive control switch signal R T
P·N range signal R T
Parking brake switch signalRT
Stop lamp switch signalRT
TR
Vehicle speed signalTRR
RT
Wide open throttle position signal T R
ASCD SET lamp signal TR
ASCD CRUISE lamp signal TR Signals ECM TCMABS actuator
and electric unit
(control unit)4WD control
unitCombination
meter
SKIA9999E
Signals ECM ABS actuator and electric unit (control unit) Combination meter
A/C compressor feedback signal T R
ABS warning lamp signal T R
Engine coolant temperature signal T R
Engine speed signal T R
Page 3059 of 4555
CAN COMMUNICATION
BRC-11
[ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
*: YD engine models onlyMI signal T R
Vehicle speed signalTR
RT
ASCD SET lamp signal T R
ASCD CRUISE lamp signal T R
Stop lamp switch signal T R
Glow indicator lamp signal* T R
A/C switch signal* R TSignals ECM ABS actuator and electric unit (control unit) Combination meter
Page 3060 of 4555
![NISSAN X-TRAIL 2005 Service Repair Manual BRC-12
[ABS]
TROUBLE DIAGNOSIS
TROUBLE DIAGNOSISPFP:00004
How to Proceed With DiagnosisEFS004G6
BASIC CONCEPT
Most important point to perform diagnosis is to understand systems (control and mechani NISSAN X-TRAIL 2005 Service Repair Manual BRC-12
[ABS]
TROUBLE DIAGNOSIS
TROUBLE DIAGNOSISPFP:00004
How to Proceed With DiagnosisEFS004G6
BASIC CONCEPT
Most important point to perform diagnosis is to understand systems (control and mechani](/manual-img/5/57403/w960_57403-3059.png)
BRC-12
[ABS]
TROUBLE DIAGNOSIS
TROUBLE DIAGNOSISPFP:00004
How to Proceed With DiagnosisEFS004G6
BASIC CONCEPT
Most important point to perform diagnosis is to understand systems (control and mechanism) in vehicle
thoroughly.
It is also important to clarify customer complaints before inspec-
tion.
First of all, reproduce symptom, and understand it fully.
Ask customer about his/her complaints carefully. In some cases,
it will be necessary to check symptom by driving vehicle with
customer.
NOTE:
Customers are not professionals. Do not assume “maybe cus-
tomer means...” or “maybe customer mentioned this symptom”.
It is essential to check symptoms right from beginning in order to
repair a malfunction completely.
For an intermittent malfunction, it is important to reproduce
symptom based on interview with customer and past examples.
Do not perform inspection on ad hoc basis. Most intermittent
malfunctions are caused by poor contacts. In this case, it will be
effective to shake suspected harness or connector by hand.
When repairs are performed without any symptom check, no
one can judge if malfunction has actually been eliminated.
After diagnosis, make sure to carry out “erase memory”. Refer to
BRC-28, "
Operation Procedure" .
Always read “GI General Information” to confirm general precau-
tions. Refer to GI-4, "
General Precautions" .
EFJ0028D
SEF233G
Page 3061 of 4555
TROUBLE DIAGNOSIS
BRC-13
[ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
DIAGNOSIS FLOWCHART
SFIA0953E
Page 3062 of 4555
BRC-14
[ABS]
TROUBLE DIAGNOSIS
ASKING COMPLAINTS
Complaints against malfunction vary depending on each person.
It is important to clarify customer complaints.
Ask customer about what symptoms are present and under
what conditions. Use information to reproduce symptom while
driving.
It is also important to use diagnosis sheet so as not to miss infor-
mation.
EXAMPLE OF DIAGNOSIS SHEET
SBR339B
LFIA0176E
Page 3063 of 4555
TROUBLE DIAGNOSIS
BRC-15
[ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
Component Parts LocationEFS004G7
SFIA2201E
Page 3064 of 4555
BRC-16
[ABS]
TROUBLE DIAGNOSIS
Schematic EFS004G8
TFWA0078E