Scan Tool Testing and Procedures
Subaru Select MonitorOPERATION
1. GENERAL DESCRIPTION
The on-board diagnosis function of the cruise control system uses Subaru Select Monitor.
The on-board diagnosis function operates in two categories, which are used depending on the type of problems;
1. Cruise Control Cancel Conditions Diagnosis:
1. This category of diagnosis requires actual vehicle driving in order to determine the cause, as when cruise speed is cancelled during driving although cruise cancel condition is not entered.
2. The ECM cruise control memory stores the cancel condition (cancel code. which occurred during driving. When there are multiple cancel conditions (cancel code), they are shown on the Subaru Select Monitor.
CAUTION:
- The cruise control memory stores not only the cruise "cancel" which occurred (although "cancel" operation is not entered by the driver), but also the "cancel" condition input by the driver.
- The latest memory content (latest code. is cleared when ignition switch is turned to OFF. However, memory content from switch fault diagnosis relating to the system and cruise control is retained as a fault history (DTC. even after the ignition switch is turned OFF.
2. Real-time Diagnosis:
Real-time diagnosis function is used to determine whether or not the input signal system is in good order, according to signal emitted from switches, sensors, etc.
1. Vehicle cannot be driven at cruise speed when the problem occurs in the cruise control system or relevant circuits.
2. Monitor the signal conditions from switches and sensors.
2. CRUISE CONTROL CANCEL CONDITIONS DIAGNOSIS
1. Prepare the Subaru Select Monitor kit.
2. Connect the diagnosis cable to the Subaru Select Monitor.
3. Connect the Subaru Select Monitor to the data link connector.
1. Data link connector is located in the lower portion of the instrument panel (on the driver's side).
2. Connect the diagnosis cable to the data link connector.
4. Start the engine and turn the cruise control main switch to ON.
5. Run the Subaru Select Monitor.
6. On the �Main Menu� display screen, select {2. Each System Check}. On the system selection display screen, select the {Engine Control System} and the [OK]. Select the [OK] after the engine type information is displayed.
7. Drive vehicle at 40 km/h (25 MPH) or more and set the cruise control.
CAUTION:
- When performing diagnosis, observe the legal speed limit on the road.
- The cancel code will be also appear when cruise control is cancelled by the driver's operation. Do not confuse these.
- Be sure to get an assistant to support the diagnosis while driving, and have him/her operate the select monitor.
8. When the set speed is canceled by itself (when cancelled without a cancel operation such as applying the brake) or if the cruise control could not be set by performing the setting operation, selecting the {Cancel Code(s) Display} on the engine malfunction diagnosis screen will display the cancel code on the select monitor display.
NOTE: There are {Latest Diagnostic Code(s)} and {Memorized Diagnostic Code(s)} in DTC. The latest code recognized during current test drive is displayed in {Latest Diagnostic Code(s)}. DTCs by the diagnosis of faulty switches relating to the system and cruise control are displayed in {Memory Code}.
9. Perform Engine DTC Clear Memory operation. Clear Memory Mode
DTCs of switches relating to the system and cruise control are deleted by clearing memory on the engine side.
NOTE: The latest code will be cleared by turning ignition switch to OFF.
3. REAL-TIME DIAGNOSIS
1. Connect the Subaru Select Monitor.
2. Turn the ignition switch and cruise control main switch to ON.
3. Run the Subaru Select Monitor.
4. On the �Main Menu� display screen, select {2. Each System Check}.
5. On the �System Selection� display screen, select the {Engine Control System}.
6. Select [OK] after engine type information is displayed.
7. Select {Current Data Display & Save} in �Cruise Control Diagnosis� display screen.
8. Make sure that normal display is shown when operated as follows:
- Depress and release the brake pedal. (Stop light switch and brake switch are turned ON.)
- Turn the main switch to ON.
- Turn the "CANCEL" switch to ON.
- Turn the "SET/COAST" switch to ON.
- Turn the "RESUME/ACCEL" switch to ON.
- Depress or release the clutch pedal.
- Place the shift lever in any position other than neutral.
NOTE:
- For details concerning the operation procedures, refer to the "PC application help for Subaru Select Monitor".
- Refer to "List of Diagnostic Trouble Code (DTC)" for DTC. Cruise Control - Diagnostics