CA13 Wiring Harness/STO Open Circuit Check

^ Using an ohmmeter, place one lead in wiring harness connector (for air control module) Pin 15 (Circuit 419A) and other to vehicle wiring harness connector for STAR Tester Circuit 419B.

^ Is ohmmeter reading less than 5 ohms?

YES -- TURN air suspension switch to OFF position. REPLACE air suspension control module and CONNECT to vehicle wiring harness.

NO -- SERVICE open in STO Circuit 419A/419B.