Nissan Sentra Service Manual: U1002 System comm (CAN)
DTC Logic
DTC DETECTION LOGIC
| DTC | Display item | Malfunction detected condition | Possible cause |
| U1002 | SYSTEM COMM(CAN) | When ABS actuator and electric unit (control unit) is not transmitting or receiving CAN communication signal for 2 seconds or less. |
|
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.
>> GO TO 2.
2.DTC REPRODUCTION PROCEDURE
With CONSULT
-
Turn the ignition switch ON.
-
Perform self diagnosis for “ABS”.
Is DTC “U1002” detected? YES >> Proceed to BRC-88, "Diagnosis Procedure".
NO >> Inspection End.
Diagnosis Procedure
CAUTION:
-
Never apply 7.0 V or more to the measurement terminal.
-
Use a tester with open terminal voltage of 7.0 V or less.
-
Turn the ignition switch OFF and disconnect the battery cable from the negative terminal when checking the harness.
1.CHECK CAN DIAGNOSIS SUPPORT MONITOR
-
Select “ABS” and “CAN Diagnosis Support Monitor” in order with CONSULT.
-
Check malfunction history between each control unit connected to ABS actuator and electric unit (control unit).
Check the result of “PAST”? All items are “OK”>>Refer to GI-39, "Intermittent Incident".
“TRANSMIT DIAG” is other than “OK”>>GO TO 2.
A control unit other than ABS actuator and electric unit (control unit) is anything other than “OK”>>GO TO 3.
2.CHECK TRANSMITTING SIDE UNIT
Check the ABS actuator and electric unit (control unit) harness connector terminals 14 and 26 for damage or loose connection.
Is the inspection result normal? YES >> Erase self-diagnosis results. Then perform self-diagnosis for “ABS” with CONSULT.
NO >> Recheck terminals for damage or loose connection.
3.CHECK APPLICABLE CONTROL UNIT
Check damage or loose connection of each CAN communication line harness connector terminals.
Is the inspection result normal? YES >> Erase self-diagnosis results. Then perform self-diagnosis for applicable control unit with CONSULT.
NO >> Recheck terminals for damage or loose connection.
U1000 CAN Comm circuit
DTC Logic
DTC DETECTION LOGIC
DTC
Display Item
Malfunction detected condition
Possible causes
U1000
CAN COMM CIRCUIT
When CAN communication signal is not continuously
...
U1010 Control unit (CAN)
Description
Initial diagnosis of ABS actuator and electric unit (control
unit)
DTC Logic
DTC DETECTION LOGIC
DTC
Items
(CONSULT screen terms)
DTC detection condition
Possible ...
Other materials:
Control buttons
The control buttons for the Bluetooth® Hands-
Free Phone System are located on the steering
wheel.
PHONE/SEND
Press the button to initiate
a VR session or answer an incoming
call.
You can also use the button
to interrupt the system feedback
and give a command at once. See
“List of ...
Parking lamp circuit
Description
The ipdm e/r (intelligent power distribution module engine room) controls the
tail lamp relay based on inputs
from the bcm over the can communication lines. When the tail lamp relay is
energized, power flows through
fuse 36, located in the ipdm e/r. Power then flows to the front ...
Diagnosis description : driving pattern
DRIVING PATTERN A
Driving pattern A means a trip satisfying the following conditions.
Engine speed reaches 400 rpm or more.
Engine coolant temperature rises by 20В°C (36В°F) or more after starting
the engine.
Engine coolant temperature reaches 70В°C (158В°F) or more.
The igniti ...
