Trouble Diagnoses — Self-diagnosis Modes I & II (Model with catalyzer)
EF & EC-67spec tableModes I & II apply only to catalyzer (catalyst-equipped) models. These modes are not available for non-catalyzer models.
Self-diagnosis — Modes I & II (Model with catalyzer)
In these modes, the control unit provides the mixture ratio monitor presentation and the mixture ratio feedback coefficient monitor presentation.
Self-diagnosis Modes I & II LED Behavior
| Mode | L.E.D. | Engine stopped (Ignition switch "ON") | Engine running — Open loop condition | Engine running — Closed loop condition | Compensating mixture ratio — More than 5% rich | Compensating mixture ratio — Between 5% lean and 5% rich | Compensating mixture ratio — More |
|---|---|---|---|---|---|---|---|
| Mode I (Monitor A) | Green | ON | *Remains ON or OFF | Blinks | — | — | — |
| Mode I (Monitor A) | Red | ON | OFF | OFF | — | — | — |
| Mode II (Monitor B) | Green | ON | *Remains ON or OFF | Blinks | — | — | — |
| Mode II (Monitor B) | Red | OFF | *Remains ON or OFF (synchronous with green L.E.D.) | — | OFF | Synchronized with green L.E.D. | Remains ON |
Mode I (Monitor A)
L.E.D.Green
Engine stopped (Ignition switch "ON")ON
Engine running — Open loop condition*Remains ON or OFF
Engine running — Closed loop conditionBlinks
Compensating mixture ratio — More than 5% rich—
Compensating mixture ratio — Between 5% lean and 5% rich—
Compensating mixture ratio — More—
Mode I (Monitor A)
L.E.D.Red
Engine stopped (Ignition switch "ON")ON
Engine running — Open loop conditionOFF
Engine running — Closed loop conditionOFF
Compensating mixture ratio — More than 5% rich—
Compensating mixture ratio — Between 5% lean and 5% rich—
Compensating mixture ratio — More—
Mode II (Monitor B)
L.E.D.Green
Engine stopped (Ignition switch "ON")ON
Engine running — Open loop condition*Remains ON or OFF
Engine running — Closed loop conditionBlinks
Compensating mixture ratio — More than 5% rich—
Compensating mixture ratio — Between 5% lean and 5% rich—
Compensating mixture ratio — More—
Mode II (Monitor B)
L.E.D.Red
Engine stopped (Ignition switch "ON")OFF
Engine running — Open loop condition*Remains ON or OFF (synchronous with green L.E.D.)
Engine running — Closed loop condition—
Compensating mixture ratio — More than 5% richOFF
Compensating mixture ratio — Between 5% lean and 5% richSynchronized with green L.E.D.
Compensating mixture ratio — MoreRemains ON
NOTE
*Maintains conditions just before switching to open loop
IMPORTANT
Modes I & II are not available for non-catalyzer model.