Test D: DTC C1770 - Air Suspension Vent Solenoid Output Circuit Failure

Pinpoint Test D: DTC C1770 - Air Suspension Vent Solenoid Output Circuit Failure
Refer to Vehicle/Diagrams, Vehicle Dynamic Suspension for schematic and connector information.

Normal Operation
The vehicle dynamics module (VDM) will command the air suspension system vent solenoid ON or OFF when certain conditions are met. The VDM supplies voltage to the vent solenoid through circuit CCL14 (BN/VT), which activates the vent solenoid and vents the air suspension system. The vent solenoid is grounded through circuit GD123 (BK/GY).

The vent solenoid is part of the air suspension compression. If a new vent solenoid is needed, an air suspension compressor must be installed.
^ DTC C1770 Air Suspension Vent Solenoid Output Circuit Failure - With the ignition in the RUN position and during a deflate (vent) activity, if the VDM detects an open, a short to voltage or a short to ground on the vent solenoid output circuit, DTC C1770 will be set.

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

D1-D3:

D4-D6: