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
- Cruise Control Cancel Conditions Diagnosis: 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. Cruise control memory in ECM stores the cancel condition (Code No.) which occurred during driving. When there are multiple cancel conditions (Code No.), 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 content of memory is cleared when ignition switch or cruise control main switch is turned OFF.
- 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. Vehicle cannot be driven at cruise speed when the problem occurs in the cruise control system or relevant circuits. Monitor the signal conditions from switches and sensors.
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- Prepare the Subaru Select Monitor kit.
- Connect the diagnosis cable to Subaru Select Monitor.
- Insert the cartridge to Subaru Select Monitor. SPECIAL TOOL PREPARATION TOOL, GENERAL DESCRIPTION. >
- Connect the Subaru Select Monitor to data link connector. Data link connector is located in the lower portion of the instrument panel (on the driver's side). Connect the diagnosis cable to data link connector.
- Start the engine and turn the cruise control main switch to ON.
- Turn the Subaru Select Monitor switch to ON.
- On the «Main Menu» display screen, select the {2. Each System Check} and press the [YES] key. On the system selection display screen, select the {Engine Control System} and press the [YES] key. Press the [YES] key after the information of engine type is displayed.
- Drive vehicle at 40 km/h (25 MPH) or more and set the cruise control.
- If the set cruise speed is canceled by itself (without any cancel operations), a DTC will appear on select monitor display when {Check Cancel Code} is selected on the engine malfunction diagnosis display screen, and pressing the [YES] key. CAUTION: DTC will also appear when cruise cancel is effected by driver. Do not confuse them. Get an assistant in the vehicle for help of diagnosis while driving. NOTE: DTC will be cleared by turning ignition switch or cruise control main switch to OFF.