2009 NISSAN LATIO Service Repair Manual

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NISSAN LATIO 2009 Service Repair Manual LAN
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PRECAUTION
PRECAUTIONS
Precautions for Trouble Diagnosis INFOID:0000000004306681
CAUTION:
• Never apply 7.0 V or more to the measurement terminal.
• Use a tester with open terminal volta

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NISSAN LATIO 2009 Service Repair Manual CAN Communication
Control Circuit " .

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NISSAN LATIO 2009 Service Repair Manual LAN
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CAN Communication Control Circuit
INFOID:0000000004306685
*: These are the only control units wired with both ends of CAN communication system.

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NISSAN LATIO 2009 Service Repair Manual LAN
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TROUBLE DIAGNOSIS
Condition of Error Detection INFOID:0000000004306688
“U1000” or “U1001” is indicated on SELF-DIAG RESULTS on CONSULT-III if CAN communication signal i

LAN
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TROUBLE DIAGNOSIS
Condition of Error Detection INFOID:0000000004306688
“U1000” or “U1001” is indicated on SELF-DIAG RESULTS on CONSULT-III if CAN communication signal is
not transmitted or received between units for 2 seconds or more.
CAN COMMUNICATION SYSTEM ERROR • CAN communication line open (CAN-H, CAN-L, or both)
• CAN communication line short (ground, betw een CAN communication lines, other harnesses)
• Error of CAN communication control circuit of the unit connected to CAN communication line
WHEN “U1000” OR “U1001” IS INDICATED EV EN THOUGH CAN COMMUNICATION SYSTEM IS
NORMAL • Removal/installation of parts: Error may be detec ted when removing and installing CAN communication unit
and related parts while turning the ignition switch ON. (A DTC except for CAN communication may be
detected.)
• Fuse blown out (removed): CAN communication of the unit may cease.
• Voltage drop: Error may be detected if voltage drops due to discharged battery when turning the ignition switch ON (Depending on the control unit which carries out CAN communication).
• Error may be detected if the power supply circuit of the control unit, which carries out CAN communication,
malfunctions (Depending on the control unit which carries out CAN communication).
• Error may be detected if reprogramming is not completed normally.
NOTE:
CAN communication system is normal if “U1000” or “U 1001” is indicated on SELF-DIAG RESULTS of CON-
SULT-III under the above conditions. Erase the memory of the self-diagnosis of each unit.
Symptom When Error Occurs in CAN Communication System INFOID:0000000004306689
In CAN communication system, multiple units mutually transmit and receive signals. Each unit cannot transmit
and receive signals if any error occurs on CAN communicati on line. Under this condition, multiple control units
related to the root cause malfunction or go into fail-safe mode.
ERROR EXAMPLE NOTE:
• Each vehicle differs in symptom of each unit under fail-safe mode and CAN communication line wiring.
• Refer to LAN-22, " Abbreviation List " for the unit abbreviation.
Example: TCM branch line open circuit

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NISSAN LATIO 2009 Service Repair Manual LAN
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Example: Main Line Between Data Link
Connector and ABS Actuator and Electr ic Unit (Control Unit) Open Circuit
Example: CAN-H, CAN-L Harness Short Circuit

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