Nissan Titan. Manual — part 78
DIAGNOSIS SYSTEM (BCM)
DLK-21
< SYSTEM DESCRIPTION >
C
D
E
F
G
H
I
J
L
M
A
B
DLK
N
O
P
*: Initial setting
REMO CONT ID ERASUR
—
Keyfob ID code can be erased.
REMO CONT ID CONFIR
—
Keyfob ID code registeration is displayed.
Support Item
Setting
Description
DLK-22
< DTC/CIRCUIT DIAGNOSIS >
U1000 CAN COMM CIRCUIT
DTC/CIRCUIT DIAGNOSIS
U1000 CAN COMM CIRCUIT
Description
INFOID:0000000009878756
CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Modern
vehicle is equipped with many electronic control unit, and each control unit shares information and links with
other control units during operation (not independent). In CAN communication, control units are connected
with 2 communication lines (CAN H-line, CAN L-line) allowing a high rate of information transmission with less
wiring. Each control unit transmits/receives data but selectively reads required data only.
CAN Communication Signal Chart. Refer to
LAN-46, "CAN Communication Signal Chart"
DTC Logic
INFOID:0000000009878757
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000009878758
1.
PERFORM SELF DIAGNOSTIC
1. Turn ignition switch ON and wait for 2 seconds or more.
2. Check “Self Diagnostic Result”.
Is “CAN COMM CIRCUIT” displayed?
YES
>> Refer to
LAN-14, "Trouble Diagnosis Flow Chart"
NO
>> Refer to
GI-42, "Intermittent Incident"
.
DTC
CONSULT display description
DTC Detection Condition
Possible cause
U1000
CAN COMM CIRCUIT
When BCM cannot communicate CAN
communication signal continuously for
2 seconds or more.
In CAN communication system, any item (or items)
of the following listed below is malfunctioning.
• Transmission
• Receiving (ECM)
• Receiving (VDC/TCS/ABS)
• Receiving (METER/M&A)
• Receiving (TCM)
• Receiving (IPDM E/R)
U1010 CONTROL UNIT (CAN)
DLK-23
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
L
M
A
B
DLK
N
O
P
U1010 CONTROL UNIT (CAN)
DTC Logic
INFOID:0000000009878759
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000009878760
1.
REPLACE BCM
When DTC [U1010] is detected, replace BCM.
>> Replace BCM. Refer to
BCS-52, "Removal and Installation"
Special Repair Requirement
INFOID:0000000009878761
1.
REQUIRED WORK WHEN REPLACING BCM
The BCM must be initialized when replaced. Refer to
BCS-4, "CONFIGURATION : Description"
for BCM con-
figuration.
Initialize NVIS by CONSULT. For the details of initialization refer to CONSULT Immobilizer mode and follow
the on-screen instructions.
>> Work End.
DTC
CONSULT display description
DTC Detection Condition
Possible cause
U1010
CONTROL UNIT (CAN)
BCM detected internal CAN communication circuit malfunction.
BCM
DLK-24
< DTC/CIRCUIT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
BCM (BODY CONTROL MODULE)
BCM (BODY CONTROL MODULE) : Diagnosis Procedure
INFOID:0000000009878762
Regarding Wiring Diagram information, refer to
.
1.
CHECK FUSES AND FUSIBLE LINK
Check that the following fuses and fusible link are not blown.
Is the fuse blown?
YES
>> Replace the blown fuse or fusible link after repairing the affected circuit.
NO
>> GO TO 2
2.
CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check voltage between BCM harness connector and ground.
Is the measurement value normal?
YES
>> GO TO 3
NO
>> Repair or replace harness.
3.
CHECK GROUND CIRCUIT
Terminal No.
Signal name
Fuses and fusible link No.
57
Battery power supply
22 (15A)
70
F (50A)
11
Ignition ACC or ON
4 (10A)
38
Ignition ON or START
59 (10A)
Connector
Terminals
Power
source
Condition
Voltage (V) (Ap-
prox.)
(+)
(-)
M18
11
Ground
ACC
power
supply
Ignition
switch
ACC or
ON
Battery voltage
38
Ground
Ignition
power
supply
Ignition
switch ON
or START
Battery voltage
M20
57
Ground
Battery
power
supply
Ignition
switch
OFF
Battery voltage
70
Ground
Battery
power
supply
Ignition
switch
OFF
Battery voltage
LIIA2415E
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