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MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.0L> 13B-53 STEP 5. Check the sensor supply voltage at barometric backprobing. • Voltage should be between 4.8 and 5.2 volts. (4) Turn the ignition switch to the "LOCK"(OFF) position. Q: Is the voltage normal? YES : Go to Step 7. STEP 6. Check connector C-40 at PCM for damage. YES : Replace the PCM. Then go to Step 12. Connector Inspection( ). Then go to Step 12. STEP 7. Check the ground voltage at barometric pressure backprobing. • Voltage should be 0.5 volt or less. (4) Turn the ignition switch to the "LOCK"(OFF) position. Q: Is the voltage normal? YES : Go to Step 10. AKX01521AC B-14 CONNECTOR 1 2 3 4 5 6 7 AK000280 CONNECTOR : C-40 PCM AV AKX01517 B-14 CONNECTOR 1 2 3 4 5 6 7 AC |