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3-2 FUEL SYSTEM (DFI)
Sensor Resistance Inspection .......................................................................................... 3-50
Atmospheric Pressure Sensor (Service Code 15).................................................................. 3-51
Removal............................................................................................................................ 3-51
Input Voltage Inspection.................................................................................................... 3-51
Output Voltage Inspection................................................................................................. 3-52
Crankshaft Sensor (Service Code 21).................................................................................... 3-54
Crankshaft Sensor Removal/Installation........................................................................... 3-54
Crankshaft Sensor Inspection........................................................................................... 3-54
Camshaft Position Sensor (Service Code 23) ........................................................................ 3-55
Camshaft Position Sensor Removal/Installation ............................................................... 3-55
Camshaft Position Sensor Inspection ............................................................................... 3-55
Speed Sensor (Service Code 24, 25)..................................................................................... 3-56
Speed Sensor Removal/Installation.................................................................................. 3-56
Speed Sensor Inspection.................................................................................................. 3-56
Input Voltage Inspection.................................................................................................... 3-56
Output Voltage Inspection................................................................................................. 3-56
Vehicle-down Sensor (Service Code 31)................................................................................ 3-58
Removal............................................................................................................................ 3-58
Installation......................................................................................................................... 3-58
Inspection.......................................................................................................................... 3-58
Subthrottle Sensor (Service Code 32).................................................................................... 3-61
Subthrottle Sensor Removal/Adjustment .......................................................................... 3-61
Input Voltage Inspection.................................................................................................... 3-61
Output Voltage Inspection................................................................................................. 3-62
Resistance Inspection....................................................................................................... 3-63
Stick Coils (#1, #2, #3, #4: Service Code 51, 52, 53, 54) ...................................................... 3-64
Removal/Installation.......................................................................................................... 3-64
Input Voltage Inspection.................................................................................................... 3-64
Subthrottle Valve Actuator (Service Code 62) ........................................................................ 3-66
Subthrottle Valve Actuator Removal ................................................................................. 3-66
Audible Inspection............................................................................................................. 3-66
Visual Inspection............................................................................................................... 3-66
Resistance Inspection....................................................................................................... 3-66
Input Voltage Inspection.................................................................................................... 3-67
FI Indicator LED Light.............................................................................................................3-68
LED Light Inspection......................................................................................................... 3-69
ECU........................................................................................................................................ 3-70
ECU Removal ................................................................................................................... 3-70
ECU Installation ................................................................................................................ 3-70
ECU Power Supply Inspection.......................................................................................... 3-70
DFI Power Source ..................................................................................................................3-73
ECU Fuse Removal .......................................................................................................... 3-73
ECU Fuse Installation ....................................................................................................... 3-73
ECU Fuse Inspection ........................................................................................................ 3-73
ECU Main Relay Removal ................................................................................................ 3-73
ECU Main Relay Inspection.............................................................................................. 3-73
Fuel Line................................................................................................................................. 3-74
Fuel Pressure Inspection .................................................................................................. 3-74
Fuel Flow Rate Inspection ................................................................................................ 3-75
Fuel Pump .............................................................................................................................. 3-77
Fuel Pump Removal ......................................................................................................... 3-77
Fuel Pump Installation ...................................................................................................... 3-77
Operation Inspection......................................................................................................... 3-78
Operating Voltage Inspection............................................................................................ 3-78
Pressure Regulator Removal............................................................................................ 3-79
Pump Screen, Fuel Filter Cleaning................................................................................... 3-79
Fuel Pump .............................................................................................................................. 3-80