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MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.0L> 13B-297 STEP 2. Check the output circuit voltage at intermediate Seat (2) Remove the protector. terminals 5, 6 and 8 between connectors of the (5) Turn the ignition switch to the "ON" position. backprobing. • Voltage should be between 2.0 and 3.0 volts. (8) Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the multi-meter reading within the specified value? YES : Go to Step 10. STEP 3. Check the 5-volt supply circuit voltage at terminals 5, 6 and 8 between connectors of the (3) Turn the ignition switch to the "ON" position. backprobing. • Voltage should be between 4.8 and 5.2 volts. (5) Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the multi-meter reading within the specified value? YES : Go to Step 4. STEP 4. Check the ground circuit voltage at intermediate terminals 5, 6 and 8 between connectors of the (3) Turn the ignition switch to the "ON" position. backprobing. • Voltage should be between 0.5 volts or less. (5) Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the multi-meter reading within the specified value? YES : Go to Step 5. AC002079 AB MB991709 MB991658 AC002080 MB991709 MB991658 AB AC002079 AB MB991709 MB991658 |