4.
Check the change of service data while accelerating.
caution
The Injector operating time should be checked in P or N range, warmed-up and idling condition.
The data shown above is only for reference and there may be a little difference actually.
This is the inspection procedure to determine whether it is present DTC or memoried one by monitoring the current signal or by using the function of oscilloscope with Hi-scan pro.
Connect scan tool to DLC connector.
Turn IG key ON position.
Start engine and warm up to operating temperature.
Check the change of service data while accelerating.
The Injector operating time should be checked in P or N range, warmed-up and idling condition.
The data shown above is only for reference and there may be a little difference actually.
Service standard
In idling: 2.2 ~ 5.0ms
2500 rpm : 2.0 ~ 5.0ms
Specification
In idling: 2.2 ~ 5.0ms
2500 rpm : 2.0 ~ 5.0ms
Start engine and warm up to operating temperature.
Channel 1 probe(+) : Injector harness connector NO2.
Channel 1 probe(-) : Chassis ground.
This figure shows the voltage waveform on channel1 in idling.
At point ①,the measured voltage should be nearly battery voltage.
The measured voltage at point ② is the surge voltage and is approximately 56V.
The measured voltage at point ③ is below 1V and the period is between 1.8ms and 4ms in idling under warmed up condition.
This figure shows the voltage waveform on channel1 in idling.
At point ①,the measured voltage should be nearly battery voltage.
The measured voltage at point ② is the surge voltage and is approximately 56V.
The measured voltage at point ③ is below 1V and the period is between 1.8ms and 4ms in idling under warmed up condition.
If the injector’s waveform shows similarly with that of figure above,it is likely to be normal injector.
In case there is no symptom and wrong data but DTC is shown
The problem may be intermittent so slightly shake the connector and harness vertically and horizontally to check if there is any data changes
If the data changes normally, the problem was intermittent so erase DTC and verify if the same DTC appears again.
Go to "Terminal and Connector inspection" procedure.
In case there is symptom and wrong data with DTC
Check open,short or connector’s connection for injector.
Check the deterioration of injector performance.
Go to "Signal circuit inspection" procedure.
