FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM: Car repair manuals for everyone.

Test F: DTCs C1790/C1795 -LR/RR Air Suspension Air Spring Solenoid Output Circuit Failure

Pinpoint Test F: DTCs C1790/C1795 -LR/RR Air Suspension Air Spring Solenoid Output Circuit Failure
Refer to Vehicle/Diagrams, Vehicle Dynamic Suspension for schematic and connector information.

Normal Operation
The air suspension module controls the air spring solenoid by sending a voltage along circuit 1114 (BN/PK) for the LR solenoid and circuit 1115 (TN/WH) for the RR solenoid. This voltage engages the solenoid allowing air to either enter or leave the air spring. Ground for both solenoids is provided along circuit 57 (BK).
^ C1790 LR Air Suspension Air Spring Solenoid Output 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 LR air spring solenoid output circuit, DTC C1790 will be set.
^ C1795 RR Air Suspension Air Spring Solenoid Output 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 RR air spring solenoid output circuit, DTC C1795 will be set.

This pinpoint test is intended to diagnose the following:
^ Wiring, terminals or connectors
^ Air spring solenoid
^ Air suspension module

F1-F2:




F2 (Continued)-F4:




F4 (Continued)-F5: