Test J: The Air Compressor Continuously Cycles with The Ignition Switch in The OFF Position and No DTCs Are Set

Pinpoint Test J: The Air Compressor Continuously Cycles with the Ignition Switch in the OFF Position and No DTCs Are Set
Refer to Vehicle/Diagrams, Vehicle Dynamic Suspension for schematic and connector information.

Normal Operation
When the air suspension module engages the air suspension relay, fused battery voltage is supplied to the air suspension compressor along circuit 538 (PK). The compressor is provided a ground path along circuit 57 (BK).

This pinpoint test is intended to diagnose the following:
^ Wiring, terminals or connectors
^ Air compressor relay
^ Air compressor assembly
^ Air suspension module

J1-J2:

J3-J4: