FB6 Checking Wiring Harness (Circuit 432D)
^ Turn air suspension switch to OFF position.
^ Disconnect air suspension control module connector.
^ Using an ohmmeter, connect one lead to air suspension control module wiring harness connector Pin 46 (Circuit 432D) and other to 432E of the left front circuit height sensor vehicle wiring harness connector.
^ Is ohmmeter reading less than 5 ohms?
YES -- Turn air suspension switch to OFF position. REPLACE suspension control module. RECONNECT left front height sensor. REPEAT Service Bay Diagnostics. Reading and Clearing Diagnostic Trouble Codes
NO -- Left front height sensor power return Circuit 432D/432E resistance is above acceptable limits. RECONNECT left front height sensor and REPEAT Service Bay Diagnostics after service is made.