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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE> 13A-435 STEP 4. Using the oscilloscope, check the ignition failure connect test harness special tool (MB991658) in between. (2) Connect the oscilloscope probe to the ignition failure sensor side connector terminal 3. (3) Start the engine and run at idle. • The waveform should show a pattern similar to the (5) Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the waveform normal? YES : Go to Step 11. STEP 5. Check the power supply voltage at ignition failure harness side. (2) Turn the ignition switch to the "ON" position. • Voltage should be battery positive voltage. (4) Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the voltage normal? YES : Go to Step 6. intermediate connectors for damage, and repair or ). If intermediate connectors are in good condition, repair harness wire AK000411AB OSCILLOSCOPE IGNITION FAILURE OSCILLOSCOPE 1 2 3 4 AK000412 NORMAL WAVEFORM (AT IDLING) NOTE : CYCLE (T) SHORTENS AS (V) 15 14 13 AK000412AB T AK000413AB B-03 HARNESS 1 2 3 4 |