JE4 Wiring Harness Check (Circuit 637)

^ Release STAR test button so that it remains in the up HOLD position and turn STAR Tester OFF.

^ Turn air suspension switch to OFF position. Disconnect suspension control module wiring harness connector Pin 28 (Circuit 637) and the other lead to the engine Powertrain Control Module wiring harness connector Pin 32 (Circuit 637).

^ Is ohmmeter reading less than 5 ohms?

YES -- REPLACE air suspension control module and REPEAT Service Bay Diagnostics. Reading and Clearing Diagnostic Trouble Codes

NO -- SERVICE open in Circuit 637. REPEAT Service Bay Diagnostics. Reading and Clearing Diagnostic Trouble Codes