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STARTING SYSTEM TABLE OF CONTENTS page page STARTING SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . 28 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 DIAGNOSIS AND TESTING - STARTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 SPECIFICATIONS - STARTER MOTOR - DIESEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 STARTER MOTOR DIAGNOSIS AND TESTING - STARTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 . . . . . . . . . . . . . . . . . . . . . . . . . 35 STARTER MOTOR RELAY . . . . . . . . . . . . . . . . . . . . . . . . . 35 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 . . . . . . . . . . . . . . . . . . . . . . . . . 36 STARTING SYSTEM DESCRIPTION The starting system consists of: • Starter motor (including an integral starter sole- noid) Other components to be considered as part of start- ing system are: • Battery • Battery cables • Ignition switch and key lock cylinder • Park/neutral position switch (automatic trans- mission) • Wire harnesses and connections. ate in conjunction with one another, and must be The diagnostic procedures used in each of these groups include the most basic conventional diagnostic Certain starting system components are monitored by the ECM and may produce a Diagnostic Trouble OPERATION The starting system components form two separate circuits. A high-amperage feed circuit that feeds the control circuit that operates on less than 20 amperes. If the vehicle is equipped with an automatic trans- mission, battery voltage is supplied through the low- When the starter relay coil is energized, the nor- mally open relay contacts close. The relay contacts The energized solenoid pull-in coil pulls in the sole- noid plunger. The solenoid plunger pulls the shift automatic transmission torque converter or torque converter drive plate. As the solenoid plunger reaches the end of its travel, the solenoid contact disc completes the high- Once the engine starts, the overrunning clutch pro- tects the starter motor from damage by allowing the 8F - 28 STARTING SYSTEM VA |