|
|
Content .. 1195 1196 1197 1198 ..
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE> 13B-481 STEP 11. Using the oscilloscope, check the No. 1 cylinder (1) Disconnect the intermediate connector B-32 and connect the test harness MB991658 between the separated (2) Connect the oscilloscope probe to injector intermediate connector terminal to No.5. (3) Start the engine and run at idle. (4) Measure the waveform. • The waveform should show a normal pattern similar to the illustration. (5) Turn the ignition switch to the "LOCK" (OFF) position. YES : It can be assumed that this malfunction is intermittent. Refer to 00, How to Use Troubleshooting/Inspection . NO : Replace the PCM. Then go to Step 12. STEP 12. Test the OBD-II drive cycle. Diagnostic Function − OBD-II Drive Cycle − Procedure 6 − Other Monitor (2) Check the diagnostic trouble code (DTC). YES : Repeat the troubleshooting. AK303053 3 4 5 8 9 1 2 6 7 10 CONNECTOR: B-32 HARNESS CONNECTOR: AB B-32 (B) 1 2 3 6 7 8 4 5 9 10 AK203300 OSCILLOSCOPE MB991658 B-32 INTERMEDIATE AB AKX01557 AB A NORMAL WAVEFORM A:INJECTOR DRIVE TIME |