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MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <2.4L> 13A-157 STEP 1. Using scan tool MB991502, check actuator test CAUTION To prevent damage to scan tool MB991502, always turn the item 01, 02, 03, 04 Injectors. (4) Warm up the engine to normal operating temperature: 80 °
C to 96 ° C(176 ° F to 205 ° F). • Does the idle state worsen when the injector is cut off. (Does idling become unstable or does the engine stall) (5) Turn the ignition switch to the "LOCK"(OFF) position. Q: Is the actuator operating properly? YES : It can be assumed that this malfunction is intermittent. Refer to GROUP 00, How to Use Troubleshooting/ ). NO : Go to Step 2. STEP 2. Check the connector at injector for damage. a. Check the connector B-22 when checking No.1 cylinder. c. Check the connector B-19 when checking No.3 cylinder. d. Check the connector B-17 when checking No.4 cylinder. Q: Is the connector in good condition? YES : Go to Step 3. Connector Inspection( ). Then go to Step 10. AC003081 AB 16 PIN MB991502 AK000557 AB B-21 B-19 B-17 B-22 CONNECTORS:B-17,B-19,B-21,B-22 |