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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE> 13B-1057 STEP 6. Measure the backup power supply voltage at PCM (1) Disconnect the connector B-20 and measure at the harness side. (2) Measure the voltage between terminal No. 42 and ground. • Voltage should be battery positive voltage. Q: Is battery positive voltage (approximately 12 volts) present? connector B-20 (terminal No. 42) because of short AK303092 25 21 24 23 22 29 28 27 26 34 33 32 31 30 38 37 36 35 43 42 41 40 39 CONNECTOR: B-20 B-20 PCM AB HARNESS CONNECTOR: AIR CLEANER 25 21 24 23 22 29 28 27 26 34 33 32 31 30 38 37 36 35 43 42 41 40 39 AK303187 B-20 HARNESS AB |