TROUBLE DIAGNOSIS SERVICE FUNCTIONS



Function
 Contents
Service function
 Automatic check mode
 Performs communication check and connection check in succession.
Diagnosis mode
 Performs version check of each unit, vehicle signal check and communication and connection check
History mode
 Displays the number of errors as the result of communication and connection checks
Monitor check mode
 Display check mode
 Checks whether the screen display function.
Geomagnetic sensor check mode
 Checks whether the geomagnetism sensor are working normally.


SERVICE FUNCTION STARTING


1.Turn the ignition switch to the LOCK (OFF) position, and then while pressing and holding the "ADJ" switch, turn the ignition switch to the ACC position. After the "ADJ" switch has been pressed continuously for 5 seconds or longer, the reception signal sound (beep) will sound, and at the same time the service function will start up and the first menu of the service mode screen will be displayed
2.When function switch 1(AUTO) is pressed at the 1st menu of the service mode screen, the mode is switched to the automatic mode. When function switch 2 (DIAG) is pressed, the mode is switched to diagnosis mode. When function switch 3 (HISTORY) is pressed, the mode is switched to history mode. Moreover, when "ADJ" switch,

AUTOMATIC MODE


1.When function switch 1 (AUTO) is pressed at the 1st menu of the service mode screen, the mode is switched to automatic checking mode. At this time, a display will appear to prompt you to turn the ignition switch to the ON position
2.When the ignition switch is turned to the ON position, communication and wiring check is carried out

3.When the communication check is completed, the communication and wiring check results are displayed on the screen.
Item
 Display example
 Contents or condition
OP. Audio
 Icon of audio communicating with RV meter
 -
A/C
 AUTO
 -
Manual or Less
 Communication error
Fuel
 OK
 -
Full or Disconnected
 Communication error
note "Manual or Less" is normally displayed for A/C.(meaning that it is not connected)

4.When function switch 1 (NEXT) is displayed at the previous screen, the status of unit is displayed
Item
 Display example
 Contents or condition
Monitor
 OK
 -
A/C
 NG
 -
E1
 Communication error
E2
 Open circuit or disconnected
note ""E2" is normally displayed for A/C.(meaning that it is not connected)

5.When function switch 1 (NEXT) is pressed at the previous screen, a list of monitor check items and results is displayed.
Item
 Display example
 Contents or condition
Amb. Temp. (Outside air)
 OK
 -
Barom. (Barometric pressure)
 OK
 -
Geomag. X, Y
 OK
 -
Eng. ECU, SWS, ABS, M-BUS
 E1
 Communication error
E2
 Open circuit or disconnected
note
  1. "E2" is normally displayed for Eng.ECU.(meaning that it is not connected)
  2. For vehicles without ABS, E2 is normally displayed for ABS.(meaning that it is not connected)

6.When function switch 1 (NEXT) is pressed at the previous screen, the version of monitor and air conditioner is displayed.
For vehicles without air conditioner or with a manual air conditioner, the version is not displayed.
note
    M: Mitsubishi Electric
    D: Denso

7.When function switch 1 (NEXT) is pressed at the previous screen, the status of vehicle signal is displayed.

  • ILL: ON or OFF
  • Key position: "ACC" or "IG"
  • Voltage: Battery voltage
  • VSS: Vehicle speed

8.When function switch 1 (NEXT) is pressed at the previous screen, the mode is switched to the previous mode screen of the service mode screen approximately 7 seconds after displaying the message, "Automatic diagnosis finished."

DIAGNOSIS MODE

1.From the 1st menu of the service mode screen, press function switch 2 (DIAG) to display diagnosis mode.


2.When function switch 1 (VER) is pressed, the version of monitor and air conditioner is displayed
note
    M: Mitsubishi Electric
    D: Denso


3.When function switch 2 (VEHICLE) is pressed, the vehicle signal condition is displayed.

  • ILL: ON or OFF
  • Key position: "ACC" or "IG"
  • Voltage: Battery voltage
  • VSS: Vehicle speed


4.When function switch 3 (COM) is pressed, the results are displayed after communication and wiring check is carried out.
Item
 Display example
 Contents or condition
OP. Audio
 Icon of audio communicating with RV meter
 -
A/C
 AUTO
 -
Manual or Less
 Communication error
Fuel
 OK
 -
Full or Disconnected
 Communication error
note "Manual or Less" is normally displayed for A/C.(meaning that it is not connected)

5.When function switch 2 (↓) at the previous screen, the status of unit is displayed.

6.When function switch 2 (↓) at the previous screen, the status of monitor is displayed
Item
 Display example
 Contents or condition
Amb. Temp. (Outside air)
 OK
 -
Barom. (Barometric pressure)
 OK
 -
Geomag. X, Y
 OK
 -
Eng. ECU, SWS, ABS, M-BUS
 E1
 Communication error
E2
 Open circuit or disconnected
note
  1. "E2" is normally displayed for Eng.ECU.(meaning that it is not connected)
  2. For vehicles without ABS, E2 is normally displayed for ABS.(meaning that it is not connected)

HISTORY MODE


1.From the 1st menu of the service mode screen, press function switch 3 (HISTORY) to display history mode.
2.When function switch 1 (CLEAR) is pressed, the number of errors is erased. When the function switch 2 (↓) is pressed, the mode is switched to the 2nd menu of history mode.
Item
 Display example
 Contents or condition

    Engine-ECU
    (Powertrain control module)
    SWS
    M-BUS

 000
 Number of communication errors

3.When function switch 1 (CLEAR) is pressed, the number of errors is erased. When the function switch 3 (↑) is pressed, the mode is switched to the 1nd menu of history mode.
Item
 Display example
 Contents or condition

    Amb. Temp
    Barom.
    Geomag. X, Y

 000
 Number of connection errors

MONITOR CHECK MODE

1.When function switch 1 (MONITOR) is pressed at the 2nd menu of the service mode screen, the mode is switched to monitor check mode. The following displays appear when the various function switches are pressed.



2.When function switch 1 (DISP) is pressed, the mode will be switched to display check mode.

  • When function switch 2 (GRAY) is pressed, the grey scale screen is displayed.
  • When function switch 3 (WHITE) is pressed, the white screen is displayed.




3.When function switch 2 (COMP) is pressed at the previous screen, the mode is switched to geomagnetic sensor mode.

  • At geomagnetic sensor mode, outputs in X- and Y-axes of the geomagnetic sensor, the circular bearing coordinate, and the radius are displayed.
  • When function switch1 (CAL.COMP) is pressed at the previous screen, the message shown in the illustration is displayed, and then when calibration has been completed, the circular bearing coordinate screen is displayed.


4.When function switch3 (ALTI) is pressed, the mode is switched to altitude correction mode

  • When function switch 2 (←) is pressed, the altitude is corrected downwards, and after approximately 5 seconds, the correction results are displayed in the altitude correction column.
  • When function switch 3 (→) is pressed, the altitude is corrected upwards, and after approximately 5 seconds, the correction results are displayed in the altitude correction column
  • When "ADJ" switch (BACK) is pressed, the mode is switched to monitor check mode screen.

GEOMAGNETIC SENSOR CHECK MODE

1.Press the "ADJ" switch with the ignition switch at "LOCK" (OFF) position, and while keeping on pressing, turn the ignition switch to the "ACC" or "ON" position. When the "ADJ" switch is pressed continuously for more than five seconds, the service function is activated at the same time with the reception signal (pip sound) and the first menu screen of the service mode is displayed.
2.Press the "ADJ" switch (next).
The screen changes to the service mode second menu screen.


3.Press the function switch 1 (MONITOR) on the service mode second menu screen.
The screen is switched to the monitor check mode.



4.Press the function switch 2 (COMP.).

  • <Normal case that the body is not magnetized>
    The geomagnetic sensor mode screen is displayed. Each of X- and Y-outputs of the geomagnetic sensor, center coordinates, and radius of the direction circle are displayed. For degeomagnetization, refer to .
  • <Case that the body is magnetized>
    If the sensor value is outside the range between 450 and 580, it is meant that the body is magnetized. The screen that calls upon to demagnetize the body stating "Demagnetize within range of acceptable level" is displayed. In this case, it is necessary to demagnetize the body and to correct the geomagnetic sensor. Refer to on-vehicle service-vehicle magnetic compensation .
  • When function switch 1 [CAL.COMP] is pressed at the previous screen, a message of urging rotation compensation is displayed. For the method of magnetization compensation by rotation, refer to .

RELEASE OF SERVICE MODE
The service mode is released by pressing the "DISP" switch (END) is pressed on the service mode first screen or the service mode second screen, or by turning the ignition switch to the "LOCK" (OFF) position.

BATTERY DISCONNECTION
When the battery cable is disconnected, the stored data may disappear. In that case, the system connection should be checked using the procedure described below

CHECKING CONNECTION OF SYSTEM
When the connection data has disappeared, turning the ignition key to "ACC" position will make the following message appear.

1.Start the engine (or turn the ignition key to "ON" position).

2.When the engine is started or when the ignition key is in the "ON" position, the monitor will display the message.

3.After a short while the system will beep. When the connection is completed, the message will be displayed.