BB3 Brake Pressure Switch Check

^ Disconnect brake pressure switch from vehicle wiring harness.

^ Using an analog ohmmeter, place one lead in air suspension control module wiring harness connector Pin 7 (Circuit 636) and other lead to Pin 46 (Circuit 432D).

^ Is ohmmeter reading greater than 10,000 ohms?

YES -- REPLACE brake pressure switch. REFER to. CONNECT air suspension control module to vehicle wiring harness. REPEAT Service Bay Diagnostics. Reading and Clearing Diagnostic Trouble Codes

NO -- SERVICE short in Circuit 636. REPEAT Service Bay Diagnostics. Reading and Clearing Diagnostic Trouble Codes