Without Super Monitor Display

"CHECK ENGINE" WARNING LIGHT CHECK

1. The "CHECK ENGINE" warning light will come on when the ignition switch is placed at "ON" and the engine is not running.
2. When the engine is started, the "CHECK ENGINE" warning light should go out. If the light remains on, the diagnosis system has detected a malfunction or abnormality in the system.


OUTPUT OF DIAGNOSTIC CODES

To obtain an output of diagnostic codes, proceed as follows:

Initial Conditions

a. Battery voltage 11 volts or more.
b. Throttle valve fully closed (throttle position sensor IDL points closed).
c. Transmission in N or P range.
d. Air conditioner switched "OFF".
e. Engine at normal operating temperature.

Without Super Monitor Display

1. Turn the ignition switch to "ON". Do not start the engine.





2. Using a sub-wire, short terminals T and E1 of the check connector.






3. Read the diagnostic code as indicated by the number of flashes of the "CHECK ENGINE" warning light.

Diagnostic Code






a. If system is operating normally (no malfunction), the light will blink once every 0.25 seconds.






b. The light will blink a number of times equal to the malfunction code indication with a 2.5 second interval between each indication.

After all the codes have been output there will be a 4.5 second pause, and they will be repeated as long as the check connector terminals and are shorted.

NOTE: In the event of a number of trouble codes, indication will begin from the smaller value and continue in order to the larger.

4. After the diagnosis check, remove the sub-wire from the check connector.





DIAGNOSIS INDICATION

1. Including "Normal", the ECU is programmed with 16 diagnostic codes.

2. When 2 or more codes are indicated, the lowest number (code) will appear first. However, no other code will appear along with code No. 11.

3. All detected diagnostic codes, except 51 and 53, will be retained in memory by the ECU from the time of detection until cancelled out.

4. Once the malfunction is cleared, the "CHECK ENGINE" warning light on the instrument panel will go out but the diagnostic code(s) remain stored in ECU memory (except for code 51).