
TABLE OF CONTENTS
EMS —ENGINE MANAGEMENT FUNCTIONS ................................................................. 173
VCM —VEHICLE CONTROL MODULE.......................................................................... 175
02 – COMPONENT INSPECTION AND ADJUSTMENT ..................................................... 177
GENERAL........................................................................................................... 177
FUEL SYSTEM...................................................................................................... 177
ELECTRICAL SYSTEM. . .. . . . .. . . . .. . . . .. . . . . . .. . . . .. . . . .. . . . .. . . . .. .. .. . . . .. . . . . . . .. . . . .. . . .. . . . .. . . . .. . .. .. . . . .. . 178
ENGINE CONNECTOR PIN OUT.................................................................................. 179
CONNECTORS ON ENGINE....................................................................................... 180
AIR INDUCTION SYSTEM ................................................................................. 181
THROTTLE BODY.................................................................................................. 181
FUEL DELIVERY ............................................................................................. 184
FUEL PUMP ........................................................................................................ 185
FUEL RAIL .......................................................................................................... 188
FUEL INJECTOR ................................................................................................... 189
ELECTRONIC MANAGEMENT ............................................................................ 191
ECM ECU AND VCM REPLACEMENT ........................................................................... 191
ENGINE WIRING HARNESS. . . .. . .. .. . . . .. . .. .. . . . .. .. . .. . . . .. .. . . . .. . . . .. . . . .. .. . .. . . . .. .. . . . .. . . . .. . . . .. .. . .. . . . 193
THROTTLE POSITION SENSOR (TPS). . .. . .. .. . . . .. . . . . . .. . . . .. . . . .. . . . .. . . . .. . . . . . .. . . . .. . . . .. . . . . . .. . . . .. . . . .. . 194
IDLE BYPASS VALVE............................................................................................... 197
CRANKSHAFT POSITION SENSOR (CPS). .. .. . . . .. . . . .. . . . .. .. . .. . . .. . .. .. . . . .. . .. .. . . . .. .. . .. . . . .. .. . .. . . . .. .. . 197
CAMSHAFT POSITION SENSOR (CAPS)......................................................................... 199
COOLANT TEMPERATURE SENSOR (CTS)...................................................................... 200
MANIFOLD AIR PRESSURE SENSOR (MAPS) . . . . .. . . . .. . . . .. . . . .. . . . . . .. . . . .. . . . .. . .. .. . . . .. .. . .. . . . .. . . . . . .. . 201
KNOCK SENSOR (KS).............................................................................................. 202
OIL PRESSURE SENSOR (OPS) .................................................................................. 203
OIL SEPARATOR PRESSURE SENSOR (OSPS) . .. . . . .. . . . .. . . . .. .. .. . . . .. . .. .. . . . .. . .. .. . . . .. .. . .. . . . .. .. . . . .. . 203
TOPS ............................................................................................................... 204
IGNITION COILS ................................................................................................... 205
TDC SETTING (TOP DEAD CENTER) ............................................................................. 206
ENGINE START SWITCH VERIFICATION......................................................................... 206
DESS SWITCH VERIFICATION.................................................................................... 206
SPARK PLUGS...................................................................................................... 207
CRANKING SYSTEM . .. . .. . . . .. . . . .. . . . .. . . . . . .. . . . .. . . . .. .. . .. . . . .. . . . . . .. . . . .. . . . .. . . . . . .. . . . .. . . . .. .. . .. . . . .. . . . 207
03 – DIAGNOSTIC PROCEDURES.............................................................................. 209
GENERAL..................................................................................................... 209
SELF-DIAGNOSTIC MODE................................................................................. 210
VCK (VEHICLE COMMUNICATION KIT) ................................................................. 211
4-TEC SYSTEM FAULT CODES ........................................................................... 212
06 TRANSMISSION
01 – DRIVE BELT .................................................................................................. 215
APPLICATION CHART ............................................................................................. 215
INSPECTION........................................................................................................ 215
CHECKING NEUTRAL FUNCTION................................................................................ 215
ROTATION DIRECTION............................................................................................ 215
DRIVE BELT HEIGHT MEASUREMENT AND ADJUSTMENT .................................................. 216
DRIVE BELT DEFLECTION MEASUREMENT (REFERENCE ONLY)............................................ 217
02 – DRIVE PULLEY............................................................................................... 219
TRA IV HD .................................................................................................... 219
GENERAL........................................................................................................... 220
REMOVAL .......................................................................................................... 220
DISASSEMBLY ..................................................................................................... 220
IV