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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE> 13B-1001 INSPECTION PROCEDURE 10: Idle Speed Is Low (Improper Idle Speed). . COMMENT • In cases such as the above, the cause is proba- bly that the intake air volume during idle is too . TROUBLESHOOTING HINTS (The most likely • Malfunction of the electronic control throttle valve system. • Malfunction of the throttle body. DIAGNOSIS Required Special Tools: • MB991958: Scan Tool (MUT-III Sub Assembly) • MB991824: V.C.I. • MB991827: USB Cable • MB991910: Main Harness A STEP 1. Using scan tool MB991958, read the diagnostic CAUTION To prevent damage to scan tool MB991958, always turn the (3) Read the DTC. YES : Refer to Diagnostic Trouble Code Chart NO : Go to Step 2. AC305412 AB MB991910 DATA LINK CONNECTOR MB991824 MB991827 |