Test G: DTC C1830 - Air Suspension Compressor Relay Circuit Failure

Pinpoint Test G: DTC C1830 - Air Suspension Compressor Relay Circuit Failure
Refer to Vehicle/Diagrams, Vehicle Dynamic Suspension for schematic and connector information.

Normal Operation
The air suspension module engages the air suspension relay by providing voltage to the relay along circuit 420 (DB/YE), ground for the relay is provided along 57 (BK). Once the relay is 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 suspension compressor along circuit 538 (PK). The compressor is provided a ground path along circuit 57 (BK).
^ DTC C1830 Air Compressor Relay Circuit Failure - With the ignition in the RUN position and during a deflate (vent) or inflate (pump) activity, if the air suspension module detects an open, a short to voltage or a short to ground on the air compressor relay circuit, DTC C1790 will be set.

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

G1-G3:

G4-G5: