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Home >> Lincoln >> 2007 >> Town Car V8-4.6L VIN W >> Repair and Diagnosis >> Steering and Suspension >> Suspension >> Suspension Control ( Automatic - Electronic ) >> Testing and Inspection >> Pinpoint Tests >> Test I: The Air Compressor Is Inoperative

Test I: The Air Compressor Is Inoperative

PINPOINT TEST I: THE AIR COMPRESSOR IS INOPERATIVE
Refer to Vehicle/Diagrams, Vehicle Dynamic Suspension for schematic and connector information.

Normal Operation
The air suspension module controls the air compressor relay by energizing circuit 420 (DB/YE), this engages the relay. Once engaged, fused battery voltage is supplied from battery junction box (BJB) fuse 112 (30A) to the relay along circuit 1053 (LB/PK), the voltage travels through the relay and to the air compressor motor along circuit 538 (GY/RD). The motor is provided a ground path along circuit 57 (BK).

Possible Causes
^ Fuse
^ Circuit open
^ Air compressor relay
^ Air compressor assembly
^ Air suspension module

I1-I3:




I3-I5:




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