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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) 13A-501 DIAGNOSIS Required Special Tools: • MB991958: Scan Tool (MUT-III Sub Assembly) • MB991824: V.C.I • MB991827: USB Cable • MB991911: Main Harness B STEP 1. Check for exhaust leaks. YES : Go to Step 2. STEP 2. Using scan tool MB991958, check data list item 59: CAUTION To prevent damage to scan tool MB991958, always turn the 59, Heated Oxygen Sensor Bank 2, Sensor 2 (left rear). • Warm up the engine. When the engine is revved, the output voltage should repeat 0 volt and 0.6 to 1.0 volt (4) Turn the ignition switch to the "LOCK" (OFF) position. YES : Go to Step 3. − Heated Oxygen Sensor Circuit (bank 2, sensor 2) ,DTC P0157 − Heated Oxygen Sensor Circuit Low Voltage (bank 2, sensor , DTC P0158 − Heated Oxygen Sensor Circuit High Voltage (bank 2, sensor 2) DTC P0159 − Heated Oxygen Sensor Circuit Slow Response (bank 2, sensor 2) AK303629AB MB991911 MB991827 MB991824 16-PIN |