Conditions for Running the DTC

WARNING: This page is about a different car, the 2011 GMC Yukon, 2011 Chevrolet Tahoe, and 2011 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.

Ignition ON, accumulator pressure is less than 9, 000 kPa (1, 305 psi).
The ignition voltage is greater than 10 volts.
The EBCM performs a hydraulic system check every third ignition cycle.
Brake pedal was depressed.