|
|
Content .. 1158 1159 1160 1161 ..
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE> 13B-940 Check Conditions • Ignition switch is "ON" position. Judgement Criteria • Accelerator pedal position sensor (main) output voltage is 0.6 volt or less for 0.3 second. . OBD-II DRIVE CYCLE PATTERN None. . TROUBLESHOOTING HINTS (The most • Accelerator pedal position sensor failed. • Open or shorted accelerator pedal position sen- sor (main) circuit, harness damage or connector • PCM failed. 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, check data list item 78: CAUTION To prevent damage to scan tool MB991958, always turn the 78, Accelerator Pedal Position Sensor (main). • Output voltage is between 0.735 and 1.335 volts when foot is released from accelerator pedal. • Output voltage is 4.0 volts or higher when accelerator pedal is fully depressed. (4) Turn the ignition switch to the "LOCK"(OFF) position. YES : It can be assumed that this malfunction is intermittent. Refer to GROUP 00, How to Use − How to Cope with Intermittent Malfunctions . NO : Go to Step 2. AC305412 AB MB991910 DATA LINK CONNECTOR MB991824 MB991827 |