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MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.0L> 13B-169 STEP 1. Check connector B-28 at the left bank heated YES : Go to Step 2. Connector Inspection( ). Then go to Step 12. STEP 2. Check the left bank heated oxygen sensor (front). connector B-28 and connect test harness special tool, (2) Measure the resistance between heated oxygen sensor connector terminal 1 (red clip) and terminal 3 (blue clip). Standard value: 4.5 −−−− 8.0 ohm [at 20 °°°° C (68 °°°° F)] Q: Is the resistance normal? YES : Go to Step 3. Then go to Step 12. STEP 3. Check the power supply voltage at left bank 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 5. AK000619 CONNECTOR:B-28 AB ACX02489 AF CONNECTOR:B-28 LEFT BANK AKX01624 HEATED MD998464 BLUE RED AC AKX01498 B-28 HARNESS 2 4 1 3 AM |