AA3 Wiring Harness/Power Supply Circuit Check

^ Drive Cycle Diagnostics has not been entered due to low power supply voltage. The following actions are required:

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

^ Turn air suspension switch OFF and disconnect air suspension control module from wiring harness connector.

^ Using an analog voltmeter, place positive voltage lead in the wiring harness connector Pin 37 (Circuit 418A) and the negative lead to Pin 40 (Circuit 430G).

^ Is there positive voltage of 11 volts or greater?

YES -- Go to AA4.

NO -- REFER to Starting and Charging.