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MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <2.4L> 13A-161 STEP 9. Using the oscilloscope, check the injector. B-21 <No.2 cylinder> or B-19 <No.3 cylinder> or B-17 (2) Connect the oscilloscope probe to the injector side connector terminal 2. NOTE: When measuring with the PCM side connector, . • PCM terminal 1 when checking No.1 cylinder. • PCM terminal 9 when checking No.2 cylinder. • PCM terminal 24 when checking No.3 cylinder. • PCM terminal 2 when checking No.4 cylinder (3) Start the engine and run at idle. • The waveform should show a normal pattern similar to (5) Turn the ignition switch to the "LOCK"(OFF) position. Q: Is the waveform normal? YES : It can be assumed that this malfunction is intermittent. Refer to GROUP 00, How to Use Troubleshooting/ ). NO : Replace the PCM. Then go to Step 10. STEP 10. Test the OBD-II drive cycle. Procedure 6 − Other Monitor( (2) Check the diagnostic trouble code (DTC). Q: Is the DTC P0201, P0202, P0203, P0204 is output? YES : Retry the troubleshooting. DTC P0300: Random Misfire Detected Random Misfire Circuit • Refer to, P0201_P0204 Injector Circuit ( CIRCUIT OPERATION • Refer to, P0201_P0204 Injector Circuit ( TECHNICAL DESCRIPTION • If a misfire occurs while the engine is running, the • The PCM checks for such changes in engine DTC SET CONDITIONS Check Conditions • Engine speed is between 500 and 6,000 r/min. • Engine coolant temperature is higher than -10 ° C (14 ° F). • Intake air temperature is higher than -10 ° C (14 ° F). • Barometric pressure is higher than 76 kPa (11 • Adaptive learning is complete for the vane which AK000587 OSCILLOSCOPE OSCILLO SCOPE PROBE 1 2 AB INJECTOR AKX01557 AB A NORMAL WAVEFORM A:INJECTOR DRIVE TIME |