EI7 Checking Firm Shock Relay Wiring Harness

^ Verify that all wires going to firm shock relay are in proper location.

^ Are all wires in proper location?

YES -- Firm shock relay ground Circuit 450D has resistance to chassis ground that is above acceptable limits. Resistance to ground should always be less than 2 ohms. REPEAT Service Bay Diagnostics after service is made.

NO -- RELOCATE wires to proper location. RECONNECT firm shock relay and air suspension control. REPEAT Service Bay Diagnostics. Reading and Clearing Diagnostic Trouble Codes