2014 Nissan Frontier - LAN System (Section LAN) (89 pages)

Posted on 25 Mar, 2015 by Duovarious
Model: 2014 Nissan Frontier
File size: 2.87 MB


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Manual Description
(SRS) "AIR BAG" "SEAT BELT PRE-TENSIONER"37, symptom When Error Occurs in CAN Communication System 7, information Needed Trouble Diagnosis 13, hOW TO USE THIS MANUAL 36.

MAIN LINE BETWEEN TCM AND HVAC CIRCUIT 69, mAIN LINE BETWEEN TCM AND DLC CIRCUIT 71, mAIN LINE BETWEEN HVAC AND DLC CIRCUIT 73, mAIN LINE BETWEEN DLC AND ABS CIRCUIT 74.

Use a tester with open terminal voltage of 7, turn the ignition switch OFF and disconnect the battery cable from negative terminal when, solder the repaired area and wrap tape around soldered area, a fray of twisted lines must be within 110 mm (4.

Bypass connection is never allowed repaired area, bypass connection may cause CAN communication error, spliced wire becomes separated and characteristics twisted, replace the applicable harness as an assembly if error is detected on the shield lines CAN communication line.

Large quantities of data at high speed by connecting control units with two communication lines (CAN-H, control units on the CAN network transmit signals using the CAN communication control circuit, receive only necessary signals from other control units operate various functions, cAN communication lines adopt twisted-pair line style (two lines twisted) noise immunity.

Each control unit passes an electric current to the termination circuits when transmitting CAN communication, communication system transmits and receives CAN communication signals by potential difference, cAN communication line between splice control unit, a point connecting a branch line with main line.

Refer to "CAN Communication Control Circuit", it controls CAN communication signal transmission and reception, error detection, etc, it converts digital signal into CAN communication signal, and CAN communication signal into digital, it eliminates noise CAN communication signal.

*: These are the only control units wired with both ends CAN communication system, diag on CAN” is a diagnosis using CAN communication instead of previous DDL1 DDL2 communication, lines, between control units diagnosis unit, it is used for trouble diagnosis.

It is used for trouble diagnosis control, cAN communication signal is not transmitted or received between units for 2 seconds more, cAN communication line open (CAN-H, CAN-L, both), cAN communication line short (ground, between CAN communication lines, other harnesses).

Error of CAN communication control circuit of the unit connected CAN communication line, wHEN DTC OF CAN COMMUNICATION IS INDICATED EVEN THOUGH CAN COMMUNICATION, removal/installation of parts: Error may be detected when removing and installing CAN communication unit, and related parts while turning the ignition switch ON.

Fuse blown out (removed): CAN communication of unit may cease, voltage drop: Error may be detected if voltage drops due to discharged battery when turning 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 not completed normally, cAN communication system is normal if DTC of CAN communication indicated SELF-DIAG, rESULTS of CONSULT under the above conditions.

Symptom When Error Occurs CAN Communication System, in CAN communication system, multiple units mutually transmit and receive signals, and receive signals if any error occurs on CAN communication line, related to the root cause malfunction or go into fail-safe mode.

Each vehicle differs in symptom of each unit under fail-safe mode and CAN communication line wiring, refer to LAN-36, "Abbreviation List" unit abbreviation, example: TCM branch line open circuit.

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