Maintenance Manual for J2 Sedan
Electronic Control System
193
Injector drive-level fault
Oxygen sensor fault indication is set, with the fuel cycle quantitative control cut off; use the basic fuel
injection time stored in the ECU for the quantitative fuel control.
Mainly check sensor wiring connection for short circuit, open circuit;
Sensor damages are generally caused by lead or phosphorus poisoning; so pay attention to the fuel
quality; meanwhile, excessive fuel consumption may also lead to sensor failure;
Changes of the oxygen sensors should be not less than a certain times in certain period of time.
sensor
oxygen sensor with special remover.
■
sensor
ess cotton
or o
■
inspect
ance of oxygen sensor.
Reddish brown: lead poisoning
Off-white: normal
Fig. 4.3.016
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