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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE> 13A-237 DIAGNOSIS Required Special Tools: • MB991316: Test Harness • MB991923: Power Plant ECU Check Harness STEP 1. Check harness connector B-37 at the cylinder 1, 4 YES : Go to Step 2. Connector Inspection . Then go to Step 12. AK303821 1 2 3 4 AB CONNECTOR: B-37 CYLINDER 1, 4 B-37 (GR) HARNESS |