Nissan Teana J32. Instruction — part 860
PCS-46
< COMPONENT DIAGNOSIS >
[POWER DISTRIBUTION SYSTEM]
U1000 CAN COMM CIRCUIT
COMPONENT DIAGNOSIS
U1000 CAN COMM CIRCUIT
BCM
BCM : Description
INFOID:0000000003805725
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-22, "CAN Communication Signal Chart"
BCM : DTC Logic
INFOID:0000000003805726
DTC DETECTION LOGIC
BCM : Diagnosis Procedure
INFOID:0000000003805727
1.
PERFORM SELF DIAGNOSTIC
1.
Turn ignition switch ON and wait for 2 seconds or more.
2.
Check “Self Diagnostic Result”.
Is “U1000: CAN COMM CIRCUIT” displayed?
YES
>> Refer to
LAN-14, "Trouble Diagnosis Flow Chart"
NO
>> Refer to
GI-35, "Intermittent Incident"
.
IPDM E/R
IPDM E/R : Description
INFOID:0000000003805728
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-22, "CAN Communication Signal Chart"
IPDM E/R : DTC Logic
INFOID:0000000003805729
DTC DETECTION LOGIC
IPDM E/R : Diagnosis Procedure
INFOID:0000000003805730
1.
PERFORM SELF DIAGNOSTIC
DTC
CONSULT-III display
description
DTC Detection Condition
Possible cause
U1000
CAN COMM CIRCUIT
When BCM cannot communicate CAN com-
munication signal continuously for 2 seconds
or more.
CAN communication system
DTC
CONSULT-III display
description
DTC Detection Condition
Possible cause
U1000
CAN COMM CIRCUIT
When IPDM E/R cannot communicate CAN
communication signal continuously for 2
seconds or more
CAN communication system
PCS
U1000 CAN COMM CIRCUIT
PCS-47
< COMPONENT DIAGNOSIS >
[POWER DISTRIBUTION SYSTEM]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
1.
Turn ignition switch ON and wait for 2 seconds or more.
2.
Check “Self Diagnostic Result” of IPDM E/R.
Is “CAN COMM CIRCUIT” displayed?
YES
>> Refer to
LAN-14, "Trouble Diagnosis Flow Chart"
NO
>> Refer to
GI-35, "Intermittent Incident"
.
PCS-48
< COMPONENT DIAGNOSIS >
[POWER DISTRIBUTION SYSTEM]
U1010 CONTROL UNIT (CAN)
U1010 CONTROL UNIT (CAN)
BCM
BCM : DTC Logic
INFOID:0000000003805731
DTC DETECTION LOGIC
BCM : Diagnosis Procedure
INFOID:0000000003805732
1.
REPLACE BCM
When DTC “U1010: CONTROL UNIT (CAN)” is detected, replace BCM.
>> Replace BCM. Refer to
BCM : Special Repair Requirement
INFOID:0000000003805733
1.
REQUIRED WORK WHEN REPLACING BCM
Initialize control unit. Refer to CONSULT-III operation instruction NATS-IVIS/NVIS.
>> Work end.
DTC
CONSULT-III display de-
scription
DTC Detection Condition
Possible cause
U1010
CONTROL UNIT (CAN)
BCM detected internal CAN communication circuit malfunction.
BCM
PCS
B2553 IGNITION RELAY
PCS-49
< COMPONENT DIAGNOSIS >
[POWER DISTRIBUTION SYSTEM]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
B2553 IGNITION RELAY
Description
INFOID:0000000003805734
BCM turns ON the following relays to ignition power supply to each ECU when the ignition switch is turned
ON.
• Ignition relay (inserted into fuse box)
• Ignition relay (built into IPDM E/R)
• Blower relay
BCM checks any ignition relay ON request for consistency with the actual ignition relay operation status.
DTC Logic
INFOID:0000000003805735
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON under the following conditions (start the engine), and wait for at least 2 seconds.
-
Selector lever is in the P or N position.
-
Do not depress brake pedal.
2.
Check “Self diagnostic result” with CONSULT-III.
Is DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000003805736
1.
CHECK DTC WITH IPDM E/R
Check “Self diagnostic result” with CONSULT-III. Refer to
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace malfunctioning parts.
2.
CHECK FUSE
Check that the following fuse is not fusing.
Is the fuse fusing?
YES
>> Repair the applicable circuit. And then replace the fuse.
NO
>> GO TO 3.
3.
CHECK IGNITION RELAY FEEDBACK INPUT SIGNAL
1.
Turn ignition switch OFF.
2.
Disconnect BCM connector.
3.
Check voltage between BCM harness connector and ground.
DTC No.
Trouble diagnosis
name
DTC detecting condition
Possible cause
B2553
IGNITION RELAY
BCM detects a difference of signal for 2 seconds or
more between the following information.
• Ignition relay (fuse block) ON/OFF operation
• Ignition relay (fuse block) feedback.
• Harness or connectors
(ignition relay feedback circuit is
open or short)
• Fuse
• Ignition relay
• IPDM E/R
Signal name
Connection position
Fuse No.
Capacity
Ignition power supply
FUSE BLOCK (J/B)
3
10A
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