Subaru Legacy BN/BS (2015-2019) Service Manual: Service diagnostics mode operation
NOTE: Contents indicated in this section generally describe inspection procedures to be performed when Subaru Select Monitor cannot be used. However, some of the inspections described here cannot be performed with Subaru Select Monitor. For the items that Subaru Select Monitor is not supporting, perform the inspections by referring to information indicated in this section. 1. PROCEDURE TO SWITCH TO SERVICE DIAGNOSTICS MODE 1. Turn the ignition switch to ACC. 2. After turning the ignition switch to ACC and wait for 20 seconds or more, press the button (d) five times with the button (a) pressed.
NOTE: Pressing the button (c) for 3 seconds or more, or turning the ignition switch from the OFF to ACC position can exit the diagnostic mode. 2. SERVICE INSPECTION Upon entering the service diagnostics mode, the following screen is displayed.
Failure Diagnosis menu On Service Menu, click Failure Diagnosis to display the following screen.
1. System Check On the Failure Diagnosis screen, click System Check to display the following screen.
OK: Each connection device is connected properly. NG: Connection is not established, or connection status (including harness) is faulty. NOTE: Check the external connection terminals (USB 1, USB 2 and AUX) by connecting memory or a pin jack for inspection. Check the connection status of the connector and harness. If there are no problems, the connection device or unit could be faulty. The following shows information to be displayed and its description.
2. SD Check On the Failure Diagnosis screen, click SD Check to display the following screen.
On the SD Check screen, click SD Check to display a diagnostic result. OK: There is no defect on the SD card. NG: There is defect on the SD card. Refer to DTC B2243 to perform the diagnosis. Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2243 SD CARD COMMUNICATION NOTE: The following shows information to be displayed and its description.
3. Subaru Select Monitor On the Failure Diagnosis screen, click Subaru Select Monitor. A DTC code is displayed when a DTC code is stored. When a DTC code is displayed, perform the diagnosis according to the DTC code. List of Diagnostic Trouble Code (DTC) Function Check/Setting On Service Menu, click Function Check/Setting to display the following screen.
1. Panel & Steering Switch Check Mode On the Function Check/Setting screen, click Panel & Steering Switch to display the following screen.
Once the screen is displayed, press the push switches to check that the number of pushed switches matches the number shown in Pushed SW. If the number of SW does not match, SW conditions are not properly recognized. Therefore, perform inspection for unrecognized switches. In addition, turn the rotary switch clockwise or counterclockwise to check that the screen indicates correct status according to the operation. If the screen display does not match the actual operation, the rotary SW may be faulty. Perform inspection for the rotary SW. NOTE: The following shows information to be displayed and its description.
2. Touch Switch Check NOTE: The Subaru Select Monitor does not have the Touch Switch Check function. On the Function Check/Setting screen, click Touch Switch to display the following screen.
Once the screen appears, touch the screen. + (cursor) appears where you touched. NOTE: The following shows information to be displayed and its description.
3. Microphone Check On the Function Check/Setting screen, click Microphone Check to perform inspection for microphone. With the microphone input level screen displayed, make sound toward the microphone. Fluctuate the sound volume to check that the microphone input level changes accordingly. If the input level does not become green or the input level does not change even when the sound volume is fluctuated, the microphone may be faulty. NOTE: The microphone input function is enabled while this screen is displayed. • The sound volume is indicated in eight levels. The maximum input volume of microphone is equally divided into eight levels from level 0 to level 7. • The microphone input level is sampled every 100 ms, and the result is indicated in eight levels. Display of the input level is also updated every 100 ms. The microphone input level gauge is updated even during recording. Example of display:
4. System Sensors Check NOTE: The Subaru Select Monitor does not have the System Sensor Check function. On the Function Check/Setting screen, click Touch Switch to display the following screen.
GPS related check: Status of the GPS signal reception can be checked. When there is faulty in reception status, position detection or date indication, re-check the reception status at a location with a fine view and no obstacles around that will interrupt the signal reception. When normal condition is still not obtained, the GPS antenna may be faulty. • GPS/Reception number: Normal when it is indicated in blue. • GPS/Status: Normal when OK is indicated. • GPS/Measurement ratio 3D: • GPS/Measurement ratio 2D: • GPS/Date: Normal when current time is indicated. When current date/time is not indicated, click the Date Setting button to set the current date on the displayed date setting screen. • GPS/Position: Normal when longitude and latitude of the current position are indicated. SPD check: Status of the vehicle speed sensor signal can be checked. (1) Before starting inspections, check the safety around the vehicle. (Lift up the vehicle as necessary.) (2) When VDC CM detected DTC, clear the DTC. (3) Drive the vehicle at 9 km/h (6 MPH) or more. (4) Check that SPD indicates vehicle speed that is almost equivalent to the figure displayed on the combination meter. (5) When the vehicle speed is not indicated, or different vehicle speed is indicated, check if CAN system DTC is stored. If so, perform the diagnosis according to the DTC. When CAN system DTC is not stored, check if the DTC related to the vehicle sensor is stored for the VDC system, and perform inspection according to the procedure. If no fault is found with the CAN system and vehicle speed sensor, and the vehicle speed is displayed on the combination meter, the unit itself may be faulty. Gyro sensor related check: Status of the Gyro sensor signal can be checked. If fault is found with the Gyro sensor related indications, the main unit could be faulty. • Gyro sensor/Gyro Voltage: Shake the vehicle to the left and right to check that the voltage changes. • Gyro sensor/Relative bearing: Normal when the value changes when direction of the vehicle is changed. • Inclined angle sensor/relative angle: Park the vehicle on uphill or downhill surface. Normal when the value changes. • Gyro/Distance correction study situation: Study situation can be checked. • Reset: Press and hold the Reset button for three seconds to reset the pulse count of SPD, relative bearing of Gyro sensor, relative angle of inclined angle sensor. NOTE: The following shows information to be displayed and its description.
5. Vehicle Signal Check On the Function Check/Setting screen, click Vehicle Signal to display the following screen.
• Battery: Status of the battery voltage signal input can be checked. Measure the battery voltage using a tester. System is normal when the indicated voltage is almost equivalent to the tester value. When the indicated voltage is different from the tester value, perform inspection for the power supply circuit of main unit. • Vehicle speed: Status of the vehicle speed signal input can be checked. 1. Before starting inspections, check the safety around the vehicle. (Lift up the vehicle as necessary.) 2. When VDC CM detected DTC, clear the DTC. 3. Drive the vehicle at 9 km/h (6 MPH) or more. 4. Check that SPD indicates vehicle speed that is almost equivalent to the figure displayed on the combination meter. 5. When the vehicle speed is not indicated, or different vehicle speed is indicated, check if CAN system DTC is stored. If so, perform the diagnosis according to the DTC. When CAN system DTC is not stored, check if the DTC related to the vehicle sensor is stored for the VDC system, and perform inspection according to the procedure. If no fault is found with the CAN system and vehicle speed sensor, and the vehicle speed is displayed on the combination meter, the unit itself may be faulty. • IG: Status of the IG signal input can be checked. Turn the ignition switch to ON, and check that the IG indication appears as ON. If the indication does not appear as ON, check the IG signal line. • ILL+: Status of the illumination signal input can be checked. 1. Before starting inspections, turn the ignition switch to ON. 2. Set the lighting switch to TAIL (small) position. Make sure that the bright switch is not turned ON at this time. 3. Check that ON lights in ILL+ and then the screen becomes dim. ON: Normal OFF: Abnormal Check the signal line and connector. If no faulty is found, the unit itself may be faulty. • PKB: Status of the parking brake signal input can be checked. • GPS/Position: Normal when longitude and latitude of the current position are indicated. Pull the parking brake switch. Check that ON is displayed in PKB. ON: Normal OFF: Abnormal Check the signal line and connector. If no faulty is found, the unit itself may be faulty. • Bright: Status of the Bright signal input can be checked. Operate the dial-type bright switch next to the wheel steering. System is normal when the signal indicates ON. If the signal does not indicate ON, check the bright switch. • REV: Status of the reverse range signal input can be checked. 1. Before starting inspections, check the safety around the rear end of the vehicle and then turn the ignition switch to ON. 2. Pull the parking brake switch and depress the brake pedal, then place the select lever in reverse. 3. Check that ON is displayed in REV. ON: Normal OFF: Abnormal Check the signal line and connector. If no faulty is found, the unit itself may be faulty. NOTE: The following shows information to be displayed and its description.
6. Camera Setting NOTE: The Subaru Select Monitor does not have the Camera Setting function. On the Function Check/Setting screen, click Camera Setting to display the following screen.
Setting of the rearview camera adjustment is possible. • Guide line display: Turn ON the guide line display to show the guide lines. • Caution display: Turn ON the caution display to enable caution display during the rearview camera display. • Default: Click the Default button to return the Guide line display and Caution display settings to the initial settings. NOTE: The following shows information to be displayed and its description.
Service Information On Service Menu, click Service Information to display the following screen.
• Program Update: This function is used when the main unit program is updated, and not used as troubleshooting. • Version Information: This function is used to view version of the main unit, and not used as troubleshooting. • Memory Initialization: This function is used to initialize information stored in the main unit memory. CAUTION: When this function is used, music information and navigation setting information saved in the main unit will be deleted. Therefore, obtain permission from the user before using this function. When initializing the memory, perform procedures by following the indicated messages. Also, when clicking the OK button, press and hold it. Product information On Service Menu, click Product Information to display the following screen.
• Product Information: Displays the product number of the main unit. • Connectivity ID: ID that is required upon using the STARLINK functions. When this ID is not indicated, the STARLINK functions are not accessible. • Pandora ID: ID that is required upon using Pandora. When this ID is not indicated, Pandora is not accessible. |
Read diagnostic trouble code (dtc) operation
1. On «Start» display, select «Diagnosis».2. On «Vehicle selection» display, input the target vehicle information and select «Confirmed».3. On «Main Menu» display, select «Each System».4. ...
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Preparation tool
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