|
|
does not match the actual yaw rate as measured by the yaw rate sensor. The desired yaw rate is calculated by the EBCM using, primarily, the following inputs. The position of the steering wheel The speed of the vehicle The lateral, or sideways acceleration of the vehicle The difference between the desired yaw rate and the actual yaw rate is the yaw rate error, which VSES activations generally occur in turns during aggressive driving. When braking during VSES Power-Up Self-Test The electronic brake control module (EBCM) is able to detect many malfunctions whenever the
2008 Chevrolet Silverado 1500 2008 BRAKES Antilock Brake System - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
driver may detect this by experiencing a momentary hard pedal. VSES Sensors Initialization The vehicle stability enhancement system (VSES) sensors values may vary slightly due to The following VSES sensors require initialization: The yaw rate sensor The lateral accelerometer The master cylinder pressure sensor The steering wheel position sensor When the vehicle speed is greater than 25 km/h (15 mph), full sensor initialization must occur ECE 13 Response The electronic brake control module (EBCM) illuminates the ABS indicator when a malfunction
2008 Chevrolet Silverado 1500 2008 BRAKES Antilock Brake System - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
has occurred and that the ABS indicator does not illuminate after returning the vehicle to the Active Vacuum Booster The power brake booster assist unit creates mechanical force for the brake booster in case of a The sensor circuits and pressure sensor The check valve manifold The vacuum solenoid valve The Power Brake Booster is solenoid operated, and applies a mechanical force to brake master The Brake Booster Vacuum Sensor is a input to EBCM, and operates the ABS pump motor to Driver Information Indicators and Messages The following indicators are used to inform the driver of several different factors. Brake Warning Indicator The instrument panel cluster (IPC) illuminates the brake warning indicator when the following The body control module (BCM) detects that the park brake is engaged. The IPC receives a The electronic brake control module (EBCM) detects a low brake fluid condition or a base The IPC performs the bulb check. The EBCM detects an ABS-disabling malfunction which also disables electronic brake ABS Indicator The IPC illuminates the ABS indicator when the following occurs.
2008 Chevrolet Silverado 1500 2008 BRAKES Antilock Brake System - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
The EBCM detects an ABS-disabling malfunction and sends a serial data message to the The IPC performs the bulb check. The IPC detects a loss of serial data communication with the EBCM. A DTC is set during the previous ignition cycle which requires an ECE 13 response at the Traction Control Off Indicator The IPC illuminates the traction off indicator when the following occurs. The EBCM disables engine torque reduction due to a malfunction and sends a serial data The driver manually disables VSES and engine torque reduction by pressing the traction Service Brake Booster Message The service brake system message is displayed whenever the red brake warning indicator is Stabilitrak Off Message The message center displays the stabilitrak off message when one or more of the following The transfer case is shifted into 4 LO. The EBCM sends a serial data message to the IPC The driver manually disables the VSES and engine torque reduction by pressing the traction The estimated temperature of any solenoid coil exceeds an acceptable limit. The EBCM The EBCM detects a failed brake switch. The EBCM sends a serial data message to the IPC VSES sensor initialization time is excessive. The EBCM sends a serial data message to the Serial data communication between the EBCM and any of several other control modules is
2008 Chevrolet Silverado 1500 2008 BRAKES Antilock Brake System - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
|
|
|