Nissan Note E12. Manual — part 481
PCS
U1000 CAN COMM CIRCUIT
PCS-51
< DTC/CIRCUIT DIAGNOSIS >
[POWER DISTRIBUTION SYSTEM]
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DTC/CIRCUIT DIAGNOSIS
U1000 CAN COMM CIRCUIT
Description
INFOID:0000000009567594
LAN-6, "CAN COMMUNICATION SYSTEM : System Description"
.
DTC Logic
INFOID:0000000009567595
DTC DETECTION LOGIC
NOTE:
U1000 can be set if a module harness was disconnected and reconnected, perhaps during a repair. Confirm
that there are actual CAN diagnostic symptoms and a present DTC by performing the Self Diagnostic Result
procedure.
Diagnosis Procedure
INFOID:0000000009567596
1.
PERFORM SELF DIAGNOSTIC RESULT
1. Turn ignition switch ON and wait for 2 second or more.
2. Check “SELF- DIAG RESULTS”.
Is “CAN COMM CIRCUIT” displayed?
YES
>> Perform CAN Diagnosis as described in DIAGNOSIS section of CONSULT Operation Manual.
NO
>> Refer to
GI-41, "Intermittent Incident"
.
CONSULT Display
DTC Detection Condition
Possible Cause
CAN COMM CIRCUIT
[U1000]
When any listed module cannot communicate
with CAN communication signal continuously for
2 seconds or more with ignition switch ON
In CAN communication system, any item (or
items) of the following listed below is malfunc-
tioning.
• Transmission
• Receiving (ECM)
• Receiving (VDC/TCS/ABS)
• Receiving (METER/M&A)
• Receiving (TCM)
• Receiving (IPDM E/R)
PCS-52
< DTC/CIRCUIT DIAGNOSIS >
[POWER DISTRIBUTION SYSTEM]
U1010 CONTROL UNIT (CAN)
U1010 CONTROL UNIT (CAN)
DTC Logic
INFOID:0000000009567597
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000009567598
1.
REPLACE BCM
When DTC “U1010” is detected, replace BCM.
>> Replace BCM. Refer to
BCS-67, "Removal and Installation"
CONSULT Display
DTC Detection Condition
Possible Cause
CONTROL UNIT (CAN)
[U1010]
BCM detected internal CAN communication cir-
cuit malfunction.
BCM
PCS
B2614 ACC RELAY CIRCUIT
PCS-53
< DTC/CIRCUIT DIAGNOSIS >
[POWER DISTRIBUTION SYSTEM]
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B2614 ACC RELAY CIRCUIT
DTC Logic
INFOID:0000000009567599
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch to ACC, and wait for 1 second or more.
2. Perform Self-diagnosis result of BCM with CONSULT.
Is DTC B2614 displayed?
YES
>> Go to
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000009567600
Regarding Wiring Diagram information, refer to
.
1.
CHECK ACCESSORY RELAY-2 CONTROL SIGNAL
1. Turn ignition switch ON.
2. Check voltage between BCM connector M98 and ground.
Is the inspection result normal?
YES
>> Replace BCM. Refer to
BCS-67, "Removal and Installation"
NO
>> GO TO 2.
2.
CHECK ACCESSORY RELAY-2 CONTROL SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector M98 and accessory relay-2 connector.
3. Check continuity between BCM connector M98 and accessory relay-2 connector M39.
4. Check continuity between BCM connector M98 and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace harness or connectors.
3.
CHECK ACCESSORY RELAY-2
CONSULT Display
DTC Detection Condition
Possible Cause
ACC RELAY REQ F/B
[B2614]
An immediate operation of accessory relay-2 is
requested by BCM, but there is no response for
more than 1 second.
• Harness or connectors
• Accessory relay-2
• BCM
BCM
Ground
Voltage
(Approx.)
Connector
Terminal
M98
96
—
Battery voltage
BCM
Accessory relay-2
Continuity
Connector
Terminal
Connector
Terminal
M98
96
M39
1
Yes
BCM
Ground
Continuity
Connector
Terminal
M98
96
No
PCS-54
< DTC/CIRCUIT DIAGNOSIS >
[POWER DISTRIBUTION SYSTEM]
B2614 ACC RELAY CIRCUIT
PCS-54, "Component Inspection"
.
Is the inspection result normal?
YES
>> Replace BCM. Refer to
BCS-67, "Removal and Installation"
NO
>> Replace accessory relay-2.
Component Inspection
INFOID:0000000009567601
1.
CHECK ACCESSORY RELAY-2
1. Turn ignition switch OFF.
2. Disconnect accessory relay-2.
3. Check the continuity between accessory relay-2 terminals.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Replace accessory relay-2.
Terminals
Condition
Continuity
3 and 5
12 V direct current supply between terminals 1 and 2
Yes
No current supply
No
PBIB0098E
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