1.
Measure the voltage between "Power" terminal of "INJECTOR" harness connector and chassis ground at IG key "ON".
■ Specification : B+
Measure the voltage between "Power" terminal of "INJECTOR" harness connector and chassis ground at IG key "ON".
■ Specification : B+
Is voltage within the specification?
 | ▶ Go to "Injector control circuit inspection" procedure as below. |
 | ▶ Repair open/poor connection/short to ground between "INJECTOR FUSE 15A" and "Power" terminal of the "INJECTOR" harness connector. |
Measure the voltage between "Injector Control" terminal of the "INJECTOR" harness connector and chassis ground at IG key "ON".
■ Specification : Approx. 3.5 V
Is voltage within the specification?
| ▶ Go to "Injector signal waveform inspection" procedure as below. |
| ▶ Repair open/poor connection/short to ground between "Injector Control" terminal of the "INJECTOR" harness connector and "ECM" harness connector. |
Select oscilloscope function on the GDS and Connect channel "A" of the VMI to "Injector Control" terminal of the "INJECTOR" harness connector.
Measure the injector signal waveform with IG key "START".
■ Reference signal waveform
Is the injector waveform displayed normally?
| ▶ There are possible causes as below. Click on each item for more details. "Compression procedure", "Ignition Coil", "Spark plug" |
| ▶ Repair open/poor connection/short to ground between "Injector Control" terminal of the "INJECTOR" harness connector and "ECM" harness connector. |
