Infiniti QX56 (Z62). Manual — part 404
DLK-82
< DTC/CIRCUIT DIAGNOSIS >
U1000 CAN COMM CIRCUIT
DTC/CIRCUIT DIAGNOSIS
U1000 CAN COMM CIRCUIT
Description
INFOID:0000000006225873
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-28, "CAN COMMUNICATION SYSTEM : CAN Communica-
DTC Logic
INFOID:0000000006225874
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000006225875
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-18, "Trouble Diagnosis Flow Chart"
NO
>> Refer to
GI-40, "Intermittent Incident"
.
DTC
CONSULT-III display
description
DTC detecting condition
Possible cause
U1000
CAN COMM
When automatic back door control unit cannot
communicate CAN communication signal con-
tinuously for 2 seconds or more.
CAN communication system
U1010 CONTROL UNIT (CAN)
DLK-83
< 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:0000000006225876
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000006225877
1.
REPLACE AUTOMATIC BACK DOOR CONTROL MODULE
When DTC [U1010] is detected, replace automatic back door control module.
>> Replace automatic back door control module. Refer to
DLK-262, "Removal and Installation"
.
DTC
CONSULT-III dis-
play description
DTC detecting condition
Possible cause
U1010
CONTROL UNIT
(CAN)
Automatic back door control unit detected inter-
nal CAN communication circuit malfunction
Automatic back door control mod-
ule
DLK-84
< DTC/CIRCUIT DIAGNOSIS >
B2401 IGNITION POWER SUPPLY CIRCUIT
B2401 IGNITION POWER SUPPLY CIRCUIT
DTC Logic
INFOID:0000000006225878
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON and wait for at least 1 second.
2.
Check “Self Diagnostic Result” mode of “AUTOMATIC BACK DOOR CONTROL UNIT” using CONSULT-
III.
Is DTC detected?
YES
>> Refer to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006225879
1.
CHECK FUSE
1.
Turn ignition switch OFF.
2.
Check 10A fuse, [No. 4, located in fuse block (J/B)].
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace the blown fuse after repairing the affected circuit if a fuse is blown.
2.
CHECK POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect automatic back door control unit connector.
3.
Check voltage between automatic back door control unit harness connector and ground.
Is the measurement value normal?
YES
>> Check intermittent incident. Refer to
GI-40, "Intermittent Incident"
.
NO
>> Repair or replace harness.
DTC
CONSULT-III display
description
DTC detecting condition
Possible cause
B2401
IGN OPEN
When the automatic back door control unit detects
the following condition for 0.3 second or more
• Power supply condition (OFF) of automatic back
door control unit and Ignition position signal (ON)
from BCM via CAN
• Fuse
• Harness or connectors
(Ignition power supply condition
circuit is open or shorted)
(+)
(
−
)
Condition
Voltage
(Approx.)
Automatic back door control unit
Connector
Terminal
B26
9
Ground
Ignition switch
ON
Battery voltage
OFF
0 V
B2403 ENCODER
DLK-85
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
L
M
A
B
DLK
N
O
P
B2403 ENCODER
DTC Logic
INFOID:0000000006225880
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON.
2.
Check “Self Diagnostic Result” mode of “AUTOMATIC BACK DOOR CONTROL UNIT” using CONSULT-
III.
Is DTC detected?
YES
>> Refer to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006225881
1.
CHECK AUTOMATIC BACK DOOR CONTROL MODULE POWER SUPPLY AND GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Check automatic back door control module power supply and ground circuit.
Refer to
DLK-116, "AUTOMATIC BACK DOOR CONTROL UNIT : Diagnosis Procedure"
.
Is the inspection result normal?
YES
>> Replace automatic back door control module. Refer to
DLK-262, "Removal and Installation"
.
NO
>> Repair or replace the malfunctioning parts.
DTC
CONSULT-III dis-
play description
DTC detecting condition
Possible cause
B2403
PULSE ENCODER
When the automatic back door control unit can not re-
ceive the signal from the encoder just after starting the
open/close operation
• Battery voltage (low battery)
• Automatic back door control mod-
ule
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст