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MULTIPORT FUEL INJECTION (MPI) DIAG MULTIPORT FUEL INJECTION (MPI) 13A-400 . CIRCUIT OPERATION • The vehicle speed sensor (manual) generates a 0 ⇔ 5 volt pulse signal when the driven (pinion) gear rotates. The pulse signal frequency • The vehicle speed sensor (manual) is connected to the ENGINE-ECU connector B-21 (terminals • The ENGINE-ECU detects the vehicle speed by the signal input to terminal 85. • The vehicle speed sensor generates the pulse signal as the teeth of the driven gear engages . DTC SET CONDITIONS Check Conditions • M/T gear range position: 1, 2, 3, 4, 5 and reverse • Engine speed: 1,000 r/min or more. Judgement Criteria • (P0500) will be set, and the check engine warn- ing lamp will come on after 2 drive cycles. . DRIVE CYCLE PATTERN Start and drive vehicle at 50km/h for 3mins. Stop . TROUBLESHOOTING HINTS (THE MOST • Malfunction of the vehicle speed sensor (M/T) • Damaged harness or connector Circuit drawings • Refer to circuit diagrams GROUP- • Refer to configuration diagrams GROUP- • Refer to component locations GROUP- DIAGNOSIS Required Special Tool: • MB991958: Diagnostic Tool (MUT-III Sub Assembly) • MB991824: V.C.I. • MB991827: MUT-III USB Cable • MB991910: MUT-III Main Harness A • MB992044: Engine-ECU Check Harness 1 2 3 4 AK303017 CONNECTOR: B-17X FRONT OF VEHICLE B-17X AB HARNESS CONNECTOR: COMPONENT SIDE RELAY BOX |