JC1 Star Code 73 Brake Pressure Switch Activation Not Detected

^ The air suspension control module has not received the signal that the vehicle's brake pedal was depressed hard after STAR Tester displayed a code 12 or 13. There are four possible causes which are listed below.

^ Brake pedal was not depressed hard at the proper time.

^ Brake pressure switch circuit may have an open or short.

^ Brake pressure switch may be inoperative.

^ Air suspension control module may be inoperative.

^ After STAR Tester displayed a code 12 or 13 was vehicle's brake pedal depressed hard?

YES -- GO to JC2.

NO -- REPEAT Service Bay Diagnostics.