Service manual

90-898303 2-2
Table of Contents
Table of Contents .............................................................................................2
2.4 / 2.5L System Block Diagram W/ADI Ignition ............................................. 4
2.5L System Block Diagram w/CDM Ignition .................................................... 6
1987-1995 2.4L / 2.5L Fuel Flow Diagram .......................................................7
1996-2001 2.5L Fuel Flow Diagram .................................................................8
2.4/2.5L Fuel Flow Component Description....................................................10
Pulse Fuel Pump........................................................................................10
Water Separating Filter ..............................................................................10
Vapor Separator.........................................................................................10
Bleed System.............................................................................................10
Final Filter ..................................................................................................11
Electric Fuel Pump.....................................................................................11
Induction Manifold......................................................................................11
Fuel Pressure Regulator ............................................................................12
Fuel Injectors ............................................................................................. 12
EFI Electrical Components .............................................................................14
EFI Electronic Control Module ...................................................................14
Other Components Associated With ECM................................................. 15
EFI Detonation Control System ......................................................................16
2.4L & 2.5L (1987–1999) ...........................................................................16
2000–2001 Models with CDM Ignition ....................................................... 18
1987 - 1995 2.4L & 2.5L - Fuel Pump Test................................................19
1996 and newer 2.5L - Fuel Pump Test.....................................................20
1987-1999 2.4L/2.5L - Theory Of Operation..................................................22
2000-2001 V6 2.0L/2.5L CDM Ignition ...........................................................28
Theory of Operation ...................................................................................29
Capacitor Charging #1, #2, & #3 CDMs.....................................................29
Capacitor Charging #4, #5 & #6 CDMs......................................................30
#1 Cylinder Trigger Circuit ......................................................................... 30
Ignition Coil Circuit .....................................................................................30
Stop Circuit ................................................................................................30
Control Module...........................................................................................31
Bias Circuit.................................................................................................31
Shift Stabilizer Circuit.................................................................................31
Idle Stabilizer Circuit ..................................................................................31
EFI Injector Timing Signal Test..................................................................32
EFI Detonation Control System .................................................................32
CDM Stop Diode Troubleshooting ............................................................. 32
1992–1999 150 EFI/175 EFI Wiring Diagram.................................................33
1992–1999 200 EFI Wiring Diagram ..............................................................34
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