Trouble Diagnoses — Self-diagnosis — Mode III (Cont'd)
EF & EC-72flowchartSelf-diagnosis — Mode III (Cont'd)
Display code | Malfunctioning circuit or parts | Control unit shows a malfunction signal when the following conditions are detected.
DETONATION SENSOR
Detonation Sensor — Code No. 34
Probable Cause
Corrective Action
Code No. 34 — Red LED pattern (3 dots) → Green LED pattern (2 dots)
Detonation sensor circuit
Detonation sensor circuit
The detonation sensor circuit is open or shorted.
SYSTEM INSPECTION
See page EF & EC-90.
Cause
Code No. 34 — Red LED pattern (3 dots) → Green LED pattern (2 dots)
Fix
Detonation sensor circuit
Cause
Detonation sensor circuit
Fix
The detonation sensor circuit is open or shorted. SYSTEM INSPECTION See page EF & EC-90.
THROTTLE SENSOR
Throttle Sensor — Code No. 43
Probable Cause
Corrective Action
Code No. 43 — Red LED pattern (4 dots) → Green LED pattern (3 dots)
Throttle sensor circuit
Throttle sensor circuit
Throttle sensor circuit is open or short. (Output voltage is too high or too low.)
SYSTEM INSPECTION
See page EF & EC-98.
Cause
Code No. 43 — Red LED pattern (4 dots) → Green LED pattern (3 dots)
Fix
Throttle sensor circuit
Cause
Throttle sensor circuit
Fix
Throttle sensor circuit is open or short. (Output voltage is too high or too low.) SYSTEM INSPECTION See page EF & EC-98.
Code No. 55
Probable Cause
Corrective Action
Code No. 55 — Red LED pattern (5 dots) → Green LED pattern (5 dots)
E.C.C.S. normal operation.
Cause
Code No. 55 — Red LED pattern (5 dots) → Green LED pattern (5 dots)
Fix
E.C.C.S. normal operation.