Description of On-Board Diagnostics

On-board Diagnosis System

1. GENERAL
The on-board diagnosis function of the cruise control system uses an external select monitor. The on-board diagnosis function operates in two categories - the cruise cancel conditions diagnosis and real-time diagnosis, which are used depending on the type of problems.

Applicable cartridge No.: 498349300




- Cruise cancel conditions diagnosis

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 main switch is turned OFF.




- Real-time diagnosis
The real-time diagnosis function is used to determine whether or not the input of output signal system is in good order, according to signal emitted from switches, sensors, etc.




2. ON-BOARD DIAGNOSIS PROCEDURES USING SELECT MONITOR
1. Connect select monitor to date link connector.
2. Turn ignition switch ON, then turn cruise main switch ON.
3. Turn select monitor's power ON. All LED's will come on. Select monitor display will read, after several seconds.

NOTE: If cruise main switch is OFF, error 1 will appear. Turn cruise main switch ON and repeat steps 2.

4. Press "F", "B", "O", and "ENT" in that order, and enter the desired designated code ("FBO", for example), or press scroll key to select the code.




3. DIAGNOSIS OF CRUISE CANCEL CONDITIONS
1. Connect select monitor.
2. Turn ignition and cruise main switch ON, and set select monitor in "FBO" mode.
3. Start engine and drive vehicle at least 40 km/h (25 MPH) with cruise speed set.
4. If cruise speed is canceled itself (without doing any cancel operations), a trouble code will appear on select monitor display.

CAUTION:
- A trouble code will also appear when cruise cancel is effected by driver. Do not confuse.
- Have a co-worker ride in vehicle to assist in diagnosis during driving.

5. Trouble code will be cleared by turning ignition or cruise main switch OFF.




4. REAL-TIME DIAGNOSIS
1. Connect select monitor.
2. Turn ignition switch and cruise main switch ON.
3. Set select monitor in FA0 mode.
4. Ensure that normal indication is displayed when controls are operated as indicated:
- When SET/COAST switch is pressed.
- WHEN RESUME/ACCEL switch is pressed.
- When brake pedal is depressed. (Stop and brake switch turns ON.)
- When clutch pedal is depressed (MT model).
- When select lever is set to "N" (AT model).

NOTE: LED's come on shortly after switches are pressed.




5. DATA SHOWN ON SELECT MONITOR DISPLAY DISPLAY