Nissan Rogue Service Manual: U1000 CAN COMM circuit
Description
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle, 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 communicate data but selectively reads required data only
DTC Logic
DTC DETECTION LOGIC
|
DTC |
Display item |
Malfunction detected condition |
Possible cause |
| U1000 | CAN COMM CIRCUIT | EPS control unit is not transmitting/receiving CAN communication signal for 2 seconds or more. |
|
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 OFF to ON.
- Perform “EPS” self-diagnosis.
Is DTC “U1000” detected? YES >> Proceed to diagnosis procedure. Refer to STC-27, "Diagnosis Procedure".
NO >> Inspection End.
Diagnosis Procedure
Proceed to LAN-17, "Trouble Diagnosis Flow Chart".
C1609 vehicle speed signal
DTC Logic
DTC DETECTION LOGIC
DTC
Display item
Malfunction detected condition
Possible cause
C1609
CAN VHCL SPEED
Malfunction is detected in v ...
EPS warning lamp
Component Function Check
1.CHECK THE ILLUMINATION OF THE EPS WARNING LAMP
Check that the EPS warning lamp turns ON when ignition switch turns ON. Then,
EPS warning lamp turns
OFF after the engine ...
Other materials:
Preparation
Special Service Tool
The actual shape of the tools may differ from those illustrated here.
Tool number
(TechMate No.)
Tool name
Description
KV38100500
( — )
Drift
Installing sensor rotor
a: 80 mm (3.15 in) dia.
b: 60 mm (2.36 in) dia.
KV40 ...
Precaution
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT
PRE-TENSIONER"
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT
PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the
...
Fuel pump
Description
Sensor
Input signal to ECM
ECM Function
Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)
Engine speed*
Fuel pump control
Fuel pump relay↓
Fuel pump
Battery
Battery voltage*
*: ECM determines the st ...