|
|
Content .. 1354 1355 1356 1357 ..
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE> 13B-1117 Wave Pattern Observation Points 1. Check that cycle time becomes shorter when the engine speed increased. . Examples of Abnormal Wave Patterns • Sensor interface malfunction. Wave pattern characteristics • Rectangular wave pattern is output even when the engine is not started. Example 2 • Loose timing belt. • Abnormality in sensor disc. Wave pattern characteristics • Wave pattern is displaced to the left or right. AK304079 AB Standard wave pattern CRANKSHAFT CAMSHAFT 2 ENGINE REVOLUTIONS (1 CAMSHAFT REVOLUTION) (VOLT) 5 0 5 0 No. 1TDC No. 3TDC No. 4TDC No. 2TDC (TIME) TDC: TOP DEAD CENTER AKX01597 AKX01602 |