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Driver Information System: Overview Nissan Murano Z50

Communication Devices 13 illustrations ~676 words

System Description

  1. For the unified meter and A/C amp., the signal required for controlling the combination meter are integrated in the A/C auto amp.
  2. Unified meter and A/C amp. controls each operation for A/C auto amp. For information regarding A/C control, refer to «AIR CONDITIONER CONTROL»(ref-234022-S40578352652006052800000).
  3. Unified meter and A/C amp. inputs necessary information for combination meter from each unit by CAN communication and so on.
  4. And unified meter and A/C amp. outputs these signals using communication line (TX, RX) between unified meter and A/C amp. and combination meter.
  5. Other input signals are also sent to the ECM, TCM, AWD control unit, BCM, display unit (without NAVI) and display control unit (with NAVI) using CAN communication.
  6. The signals required for the distance to empty (DTE) display are centralized in the unified meter and A/C amp., converted into data, and sent to the display unit (without NAVI) or display control unit (with NAVI) using CAN communication.
  7. The unified meter and A/C amp. have a CONSULT-II function (self-diagnostic results, CAN diagnostic support monitor, data monitor).

Scheme 1

Scheme 1: Between Unified Meter and A/C Amp. and Combination Meter
Scheme 1: Between Unified Meter and A/C Amp. and Combination Meter

Scheme 2

Scheme 2: Solution When Communication Error Between the Unified Meter & A/C Amp. and the Combination Meter
Scheme 2: Solution When Communication Error Between the Unified Meter & A/C Amp. and the Combination Meter

CAN Communication System 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.

CONSULT-II BASIC OPERATION

CAUTIONIf CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be detected in self-diagnosis depending on control unit which carry out CAN communication.

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Scheme 6
  1. With the ignition switch OFF, connect "CONSULT-II" and "CONSULT-II CONVERTER" to the data link connector, then turn ignition switch ON.
  2. Touch "START (NISSAN BASED VHCL)".
  3. Touch "METER A/C AMP" on "SELECT SYSTEM" screen. If "METER A/C AMP" is not indicated, go to «CONSULT-II DATE LINK CONNECTOR (DLC) CIRCUIT»(ref-233992-S34507144402006052800000).
  4. Select "SELF-DIAG RESULTS", "CAN DIAG SUPPORT MNTR" or "DATA MONITOR".

Scheme 7

Scheme 7: Operation Procedure
Scheme 7: Operation Procedure
  1. Touch "SELF-DIAG RESULTS" on "SELECT DIAG MODE" screen.
  2. Self-diagnosis results are displayed.

This unit displays earth magnetism and heading direction of vehicle.

Scheme 8

Scheme 8: System Description
Scheme 8: System 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.

CONSULT-II BASIC OPERATION PROCEDURE

CAUTIONIf CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be detected in self-diagnosis depending on control unit which carry out CAN communication.

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Scheme 12

Scheme 13

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Scheme 13
  1. With the ignition switch OFF, connect "CONSULT-II" and "CONSULT-II CONVERTER" to the data link connector, and turn the ignition switch ON.
  2. Touch "START (NISSAN BASED VHCL)".
  3. Touch "BCM" on "SELECT SYSTEM" screen. If "BCM" is not indicated, go to «CONSULT-II DATE LINK CONNECTOR (DLC) CIRCUIT»(ref-233992-S34507144402006052800000).
  4. Touch "BUZZER" or "BCM".
  5. Select "DATA MONITOR", "ACTIVE TEST" or "SELF-DIAG RESULTS".

Operation Procedure

  1. Touch "BUZZER" on "SELECT TEST ITEM" screen.
  2. Touch "DATA MONITOR" on "SELECT DIAG MODE" screen.
  3. Touch "ALL SIGNALS" or "SELECTION FROM MENU" on "DATA MONITOR" screen. SELECT TEST ITEM DESCRIPTION CHART ALL SIGNALS Monitors main items. SELECTION FROM MENU Selects and monitors items.
  4. If "SELECTION FROM MENU" is selected, touch the desired monitor item. If "ALL SIGNALS" is selected, all items required to control are monitored.
  5. Touch "START".
  6. During monitoring, touching "RECORD" can start recording the monitored item status.
  1. Touch "BUZZER" on "SELECT TEST ITEM" screen.
  2. Touch "ACTIVE TEST" on "SELECT DIAG MODE" screen.
  3. Touch the item to be tested, and check the operation.
  4. During the operation check, touching "OFF" deactivates the operation.
  1. Touch "BCM" on "SELECT TEST ITEM" screen.
  2. Touch "SELF-DIAG RESULTS" on "SELECT DIAG MODE" screen.
  3. Self-diagnosis results are displayed.

See also:
• TROUBLE DIAGNOSIS

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