Nissan Qashqai J11. Manual — part 12
SERVICE INFORMATION FOR ELECTRICAL INCIDENT
GI-47
< BASIC INSPECTION >
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• The (Computer Controlled) system operations can be adversely affected by any variation in resistance in the
system. Such resistance variation may be caused by poor connection, improper installation, improper wire
gauge or corrosion.
• The step by step voltage drop test can identify a component or wire with too much resistance.
CONTROL UNIT CIRCUIT TEST
System Description
• When the switch is ON, the control unit lights up the lamp.
CASE 1
INPUT-OUTPUT VOLTAGE CHART
• The voltage value is based on the body ground.
• *: If high resistance exists in the switch side circuit (caused by a single strand), terminal 1 does not detect battery voltage. Control unit
does not detect the switch is ON even if the switch does not turn ON. Therefore, the control unit does not supply power to light up the
lamp.
SAIA0258E
Terminal No.
Description
Condition
Value (Approx.)
In case of high resistance such as single
strand (V) *
+
−
Signal name
Input/
Output
1
Body
ground
Switch
Input
Switch ON
Battery voltage
Lower than battery voltage Approx. 8 (Ex-
ample)
Switch OFF
0 V
Approx. 0
2
Body
ground
Lamp
Output
Switch ON
Battery voltage
Approx. 0 (Inoperative lamp)
Switch OFF
0 V
Approx. 0
MGI034A
GI-48
< BASIC INSPECTION >
SERVICE INFORMATION FOR ELECTRICAL INCIDENT
CASE 2
INPUT-OUTPUT VOLTAGE CHART
• The voltage value is based on the body ground.
• *: If high resistance exists in the switch side circuit (caused by a single strand), terminal 2 does not detect approx. 0 V. Control unit
does not detect the switch is ON even if the switch does not turn ON. Therefore, the control unit does not control ground to light up the
lamp.
Terminal No.
Description
Condition
Value (Approx.)
In case of high resistance such as single
strand (V) *
+
−
Signal name
Input/
Output
1
Body
ground
Lamp
Output
Switch ON
0 V
Battery voltage (Inoperative lamp)
Switch OFF
Battery voltage
Battery voltage
2
Body
ground
Switch
Input
Switch ON
0 V
Higher than 0 Approx. 4 (Example)
Switch OFF
5 V
Approx. 5
MGI035A
CONSULT/GST CHECKING SYSTEM
GI-49
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CONSULT/GST CHECKING SYSTEM
Description
INFOID:0000000010242497
• When CONSULT/GST is connected with a data link connector (A)
equipped on the vehicle side, it will communicate with the control
unit equipped in the vehicle and then enable various kinds of diag-
nostic tests.
• Refer to CONSULT Software Operation Manual for more informa-
tion.
CONSULT Function and System Application*1
INFOID:0000000010242498
FUNCTION
*: Permanent DTC is not applied for regions where it is not mandated.
SYSTEM APPLICATION
*1
×
: Applicable
1
: Lower instrument panel, driver side
JMAIA1191ZZ
Mode
Function
All DTC Reading
Display all DTCs or diagnostic items that all ECUs are recording and judging.
Work Support
This mode enables a technician to adjust some devices faster and more accurately.
Self Diagnostic Results
Retrieve DTC from ECU and display diagnostic items.
Data Monitor
Monitor the input/output signal of the control unit in real time.
CAN Diagnosis
This mode displays a network diagnosis result about CAN by diagram.
CAN Diagnosis Support Monitor
It monitors the status of CAN communication.
Active Test
Send the drive signal from CONSULT to the actuator. The operation check can be performed.
ECU Identification
Display the ECU identification number (part number etc.) of the selected system.
Function Test
This mode can show results of self-diagnosis of ECU with either “OK” or “NG”. For engines, more
practical tests regarding sensors/switches and/or actuator are available.
Configuration
Function to READ/WRITE vehicle configuration.
SRT&P-DTC Confirmation
The state of System Readiness Test (SRT) items, the presence or absence of permanent DTC*,
and driving conditions can be checked.
DTC work support
DTC reproduction procedure can be performed speedily and precisely.
Others
Other results or histories, etc. that are recorded in ECU are displayed.
System
All DTC
Reading
W
o
rk
Su
pp
ort
Self
Dia
g
n
o
s
tic
Res
u
lt
s
Dat
a
Monitor
CAN Diagnosis
CAN Diagnosis Support
Monitor
Active T
e
st
ECU I
d
e
n
ti
ficat
ion
F
u
n
c
ti
on
T
e
st
Co
nfi
g
u
rat
ion
SR
T&P-DTC Confirmation
DTC work support
Others
ENGINE
x
x
x
x
x
x
x
x
-
x
*4
x
*2*3
x
*3
-
TRANSMISSION
x
x
x
x
x
x
-
x
-
-
x
*2
-
• CALIB DATA
IPDM E/R
x
x
x
x
x
x
x
x
x
x
-
-
-
GI-50
< BASIC INSPECTION >
CONSULT/GST CHECKING SYSTEM
*1: If GST application is equipped, functions in accordance with SAE J1979 and ISO 15031-5 can be used.
*2: Permanent DTC is not applied for regions where it is not mandated.
*3: Used only in models with gasoline engine.
*4: Used only in models with diesel engine.
CONSULT/GST Data Link Connector (DLC) Circuit
INFOID:0000000010242499
INSPECTION PROCEDURE
If the CONSULT/GST cannot diagnose the system properly, check the following items.
NOTE:
The DDL1 and DDL2 circuits from DLC pins 12, 13, 14 and 15 may be connected to more than one system. A
short in a DDL circuit connected to a control unit in one system may affect CONSULT access to other systems.
If the GST cannot operate properly, check the circuit based on the information of SAE J1962 and ISO 15031-
3.
EPS
x
-
x
x
x
-
-
x
-
-
-
-
-
LASER/RADAR
x
x
x
x
x
x
x
x
-
-
-
-
-
HVAC
-
x
x
x
x
x
x
x
-
-
-
-
-
AIR BAG
x
-
x
x
x
-
-
x
-
x
-
-
• TROUBLE DIAG RECORD
CHASSIS CONTROL
x
-
x
x
x
x
x
x
-
x
-
-
-
BCM
x
x
x
x
x
x
x
x
x
x
-
-
-
LANE CAMERA
x
x
x
x
x
x
-
x
-
-
-
-
-
TPMS
x
x
x
x
-
-
x
x
-
x
-
-
-
METER / M&A
-
x
-
x
x
x
-
-
-
-
-
-
• Warning History
ABS
x
x
x
x
x
x
x
x
-
x
-
-
-
EHS/PKB
x
x
x
x
x
x
x
x
-
-
-
-
-
SONAR
x
-
x
-
x
x
-
x
-
x
-
-
-
ALL MODE AWD/4WD
x
x
x
x
x
x
x
x
-
-
-
-
-
MULTI AV
x
-
x
x
x
x
-
x
-
x
-
-
-
AVM
x
x
x
x
x
x
x
x
-
x
-
-
-
System
A
ll DTC Reading
W
o
rk Su
pp
ort
Se
lf
Dia
gno
s
tic
Res
u
lt
s
Dat
a
M
o
n
ito
r
CA
N D
iag
no
si
s
CAN Diagnosis Su
ppo
rt M
o
nit
o
r
Ac
ti
ve
T
e
st
ECU I
d
e
n
ti
ficati
on
Fu
nc
ti
on
T
e
st
Co
nfi
g
u
rati
o
n
SR
T&
P-DTC Confirmation
DTC work
support
Others
Symptom
Check item
CONSULT cannot access any
system.
• CONSULT DLC power supply circuit (Terminal 8 and 16) and ground circuit (Terminal 4 and 5)
CONSULT cannot access indi-
vidual system. (Other systems
can be accessed.)
• Power supply and ground circuit for the control unit of the system (For detailed circuit, refer to wiring
diagram for each system.)
• Open or short circuit between the system and CONSULT DLC (For detailed circuit, refer to wiring
diagram for each system.)
• Open or short circuit CAN communication line. Refer to
LAN-24, "Trouble Diagnosis Flow Chart"
.
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