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TROUBLESHOOTING MULTIPORT FUEL INJECTION (MPI) <4G1> 13B-353 Standard Wave Pattern Observation condition Description of Wave Pattern • The camshaft position sensor detects the com- pression top dead center of each cylinder. • The crank angle sensor detects the crank angle of each cylinder. 72 crank angle sensor high sig- Wave Pattern Observation Points • Check that the wave pattern becomes shorter when the engine speed increases. Function Special patterns Pattern height Low Pattern selector Display Engine Idle AK204111AC (V) 5 0 5 0 No. 1TDC No. 3TDC No. 4TDC No. 2TDC time Standard wave pattern Crank angle Camshaft position 2 engine revolutions TDC: Top dead centre Main Index Group TOC |