The purpose of the Inspection is to analyze the cause of hesitation through injector resistance inspection, waveform inspection.
IG "OFF"
Disconnect each connector of injectors and measure resistance.
Specification : 13.8~15.2Ω at 68℉ (20℃)
Temperature | Injector Resistance |
-4 ℉ (-20 ℃) | 12.2 ~ 12.3 Ω |
32 ℉ (0 ℃) | 13.3 ~ 13.5 Ω |
68 ℉ (20 ℃) | 14.4 ~ 14.6 Ω |
104 ℉ (40 ℃) | 15.5 ~ 15.7 Ω |
140 ℉ (60 ℃) | 16.6 ~ 16.8 Ω |
176 ℉ (80 ℃) | 17.7 ~ 17.9 Ω |
The difference resistance of injectors at the same temperature : below 1Ω
Is the measured resistance within specification?
YES
Go to "Injector waveform Inspection" procedure as below.
NO
Replace the injector
Engine "ON"
Connect a scantool to Data Link Connector(DLC).
Measure the waveform of each injector at idle.
Is "The injector waveform" displayed normally?
YES
Injector is OK
NO
Replace the injector after checking injector control harness and ECM.
