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ELECTRONIC AIR SUSPENSION SYSTEMS. COMPONENTS. AIR SPRINGS AND VALVES COMPRESSOR SENSORS CONTROL MODULE. AIR SPRING. Replaces coil Spring Can be inflated or deflated to trim car Can be controlled individually or all together. LATE MODEL AIR SPRING.
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COMPONENTS • AIR SPRINGS AND VALVES • COMPRESSOR • SENSORS • CONTROL MODULE
AIR SPRING • Replaces coil Spring • Can be inflated or deflated to trim car • Can be controlled individually or all together
AIR SPRING VALVE • Normally closed • Intake or Exhaust • Mounted like a radiator cap. lock tabs • Controlled by Module
AIR PUMP/COMPRESSOR • 12V Powered • Single Piston • Contains the Air Vent Valve • Air Drier • Controlled by Module through a relay • High Current
SYSTEM MODULE • Usually in trunk • Controls: • Air Spring Valves • Air Vent Valve • Compressor Relay • Self Diagnostics • No KAM • Inputs • Sensors • Switches
POWER ON/OFF SWITCH • Usually located in trunk • Must turn off if raise car
HEIGHT SENSOR • One for each front wheel • One for both wheels on rear axle • Different construction
84-87 LINCOLN Linear Height sensor Air Bag Manual Diagnostics 88 & UP LINCOLN Rotary Height Sensor Strut/Air Bag Steering Sensor 168 Accel/Decel Logic Auto Diagnostics Soft/Firm C170 Brake Switch Speed Sensor INPUT/OUTPUT COMPARISON
SYSTEM DIAGNOSIS • 1984-87 Continental - - Controlled leveling of vehicle only ( • 88 to present Continental - - Combines air leveling, automatic ride control, speed leveling
88 Continental Diagnostics • Visual Inspection • Vehicle Preparation • Drive Cycle Diagnostics • Service Bay Diagnostics • Spring Fill Diagnostics
DRIVE CYCLE DIAGNOSTICS • Designed to catch intermittent faults. • Will store up to 32 fault codes in module for one hour after key off. • This test is done by driving car until the ride control warning lamp illuminates or the technician has determined that there is no fault. • If no fault, enter Service Bay Diagnostics
SERVICE BAY DIAGNOSTICS • Broken down into 3 parts • Auto/Manual Diagnostic Checks - - Is a self check of system. Will say good or bad • Fault Code Display - - Displays codes • Functional Checks - - This test leads you to doing pinpoint tests
SPRING FILL DIAGNOSTICS • Sometimes, Functional Tests will instruct you to perform Spring Fill Diagnostics. • Used to check individual springs
SYSTEM SERVICES • Diagnostics Early Lincoln • Air Spring Removal/Installation Air Spring Inflation • Trim Height Adjustment • Line Service • Spring Fill Diagnostics