2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 951
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC C0110 00
- Pump Motor Circuit
DTC C0110 61
- Pump Motor Circuit Actuator Stuck
DTC C12E0 00
- ABS Pump Motor Performance
DTC C12E8 00
- ABS Pump Motor Stuck
DTC C12E9 00
- ABS Pump Motor Stuck On
Diagnostic Fault Information
Circuit/System Description
The pump motor is a bi-directional motor and is an internal part of the brake pressure modulator valve assembly. There are three solid state relays
in the electronic brake control module (EBCM) that operate the pump. The pump motor runs every few brake stops in order to fill the high pressure
accumulator with brake fluid anytime the engine is running.
Conditions for Running the DTC
* Ignition ON.
* Ignition voltage is greater than 10 volts.
* The system enable relay is ON.
* The pump motor has been commanded ON, OFF and ON again.
Conditions for Setting the DTC
* The EBCM detects a short to ground or an open/high resistance on the B+ circuit.
* The EBCM detects an open/high resistance on the ground circuit.
* The EBCM detects the pump motor runs continuously.
* The EBCM detects the pump motor is binding or stalled.
Action Taken When the DTC Sets
* The EBCM disables the ABS/Traction Control System/Vehicle Stability Enhancement System for the duration of the ignition cycle.
* The ABS indicator illuminates.
* The red Brake indicator illuminates.
* The Stability Control indicator illuminates.
* The driver information center displays Service Brake Soon, Service StabiliTrak and Service Traction Control messages.
Conditions for Clearing the DTC
* The condition for the DTC is no longer present and the United Nations Economic Commission for Europe regulation number 13 response is
completed by driving the vehicle at speeds greater than 15 km/h (10 mph) to complete the self test, then the EBCM will turn off the ABS
indicator.
* The EBCM clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.
Diagnostic Aids
* Find out from the customer the conditions under which the DTC was set. This information may help duplicate the failure like the specific
number of brake pedal applies in a row prior to the fault set.
* Check for hydraulic leaks, air in the brake system or an improper brake bleed.
