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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) 13A-189 STEP 3. Measure the sensor supply voltage at throttle side. (2) Turn the ignition switch to the "ON" position. • Voltage should be between 4.9 and 5.1 volts. (4) Turn the ignition switch to the "LOCK" (OFF) position. YES : Go to Step 6. STEP 4. Check harness connector B-09 at ECM for YES : Go to Step 5. Connector Inspection . Then go to Step 14. STEP 5. Check for open circuit and short circuit to ground YES : Go to Step 9. STEP 6. Check the continuity at throttle position sensor side. (2) Measure the continuity between terminal No. 3 and ground • Continuity (2 ohms or less) Q: Does continuity exist? YES : Go to Step 10. STEP 7. Check harness connector B-09 at ECM for YES : Go to Step 8. Connector Inspection . Then go to Step 14. 1 6 5 4 3 2 AK203049 B-11 harness AG 1 6 5 4 3 2 AK203051 B-11 harness AH |