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Nissan-Datsun Truck Armada 2WD V8-5.6L (VK56DE) U CODE 10
Is "CAN COMM CIRCUIT" displayed?
YES - See: Powertrain Management/Computers and Control Systems/Information Bus/Description and Operation/CAN Communication
System/CAN Communication Control Circuit.
NO - See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Intermittent Incident.
TM
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 malfunction 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 transmits/receives data but selectively reads required data only.
On Board Diagnosis Logic
- This is an OBD-II self-diagnostic item.
- Diagnostic trouble code "U1000" with CONSULT-III is detected when TCM cannot communicate to other control units.
Possible Cause
Harness or connectors
(CAN communication line is open or shorted.)
DTC Confirmation Procedure
NOTE:
If "DTC Confirmation Procedure" has been previously performed, always turn ignition switch "OFF" and wait at least 10 seconds
before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-III
1. Turn ignition switch "ON". (Do not start engine.)
2. Select "DATA MONITOR" mode for "ENGINE" with CONSULT-III.
3. Start engine and wait for at least 6 seconds.
4. If DTC is detected, go to See: U1000/TM.
WITH GST
Follow the procedure "WITH CONSULT-III".
Diagnosis Procedure
1.CHECK CAN COMMUNICATION CIRCUIT
With CONSULT-III
1. Turn ignition switch "ON" and start engine.
2. Select "SELF-DIAG RESULTS" mode for "TRANSMISSION" with CONSULT-III.
Is any malfunction of the "U1000" indicated?
YES - Go to LAN system. See: Powertrain Management/Computers and Control Systems/Information Bus/Testing and Inspection/Initial
Inspection and Diagnostic Overview/CAN Fundamental/Trouble Diagnosis Flow Chart.
NO - INSPECTION END
U1001
U1001 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 transmits/receives data but selectively reads required data only.
On Board Diagnosis Logic
The MIL will not light up for this self-diagnosis.
****************************
Nissan-Datsun Truck Armada 2WD V8-5.6L (VK56DE) U CODE 10
Is "CAN COMM CIRCUIT" displayed?
YES - See: Powertrain Management/Computers and Control Systems/Information Bus/Description and Operation/CAN Communication
System/CAN Communication Control Circuit.
NO - See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Intermittent Incident.
TM
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 malfunction 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 transmits/receives data but selectively reads required data only.
On Board Diagnosis Logic
- This is an OBD-II self-diagnostic item.
- Diagnostic trouble code "U1000" with CONSULT-III is detected when TCM cannot communicate to other control units.
Possible Cause
Harness or connectors
(CAN communication line is open or shorted.)
DTC Confirmation Procedure
NOTE:
If "DTC Confirmation Procedure" has been previously performed, always turn ignition switch "OFF" and wait at least 10 seconds
before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-III
1. Turn ignition switch "ON". (Do not start engine.)
2. Select "DATA MONITOR" mode for "ENGINE" with CONSULT-III.
3. Start engine and wait for at least 6 seconds.
4. If DTC is detected, go to See: U1000/TM.
WITH GST
Follow the procedure "WITH CONSULT-III".
Diagnosis Procedure
1.CHECK CAN COMMUNICATION CIRCUIT
With CONSULT-III
1. Turn ignition switch "ON" and start engine.
2. Select "SELF-DIAG RESULTS" mode for "TRANSMISSION" with CONSULT-III.
Is any malfunction of the "U1000" indicated?
YES - Go to LAN system. See: Powertrain Management/Computers and Control Systems/Information Bus/Testing and Inspection/Initial
Inspection and Diagnostic Overview/CAN Fundamental/Trouble Diagnosis Flow Chart.
NO - INSPECTION END
U1001
U1001 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 transmits/receives data but selectively reads required data only.
On Board Diagnosis Logic
The MIL will not light up for this self-diagnosis.
