Chevrolet Sonic Repair Manual: Brake Warning System Description and Operation
- Brake Warning Indicator
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- Brake Warning Block Diagram
B80 Park Brake Switch B20 Brake Fluid Level Switch K9 Body Control Module P16 Instrument Cluster (HW) Hard-Wired (HW) Hard-Wired (DA) Serial Data (B80) B80 Park Brake Switch (B20) B20 Brake Fluid Level Switch (K9) K9 Body Control Module (P16) P16 Instrument Cluster
The instrument cluster turns the brake warning indicator ON when the following occurs:
- The instrument cluster performs the bulb check. The brake warning indicator illuminates for 5 s.
- When the Electronic Brake Control Module (EBCM) detects low brake fluid level it sends a serial data message to the instrument cluster, which will illuminate the red brake indicator.
- The Body Control Module (BCM) detects that the parking brake is engaged. The instrument cluster receives a serial data message from the BCM requesting illumination.
- Driver Information Center Messages
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When the Electronic Brake Control Module (EBCM) detects low brake fluid level it sets DTC C0267 and sends a serial data message to the Driver Information Center , which will display Brake Fluid Low message.
Brake System Warning Light
The vehicle brake system consists of two hydraulic circuits. If one circuit is
not working, the remaining circuit can still work to stop the vehicle. For normal
braking performance, both circuits ...
Engine Oil Pressure Indicator Switch Replacement
Engine Oil Pressure Indicator Switch Replacement
Callout
Component Name
Preliminary Procedure
Remove the air conditioning compr ...
Other materials:
Traction Control/ Electronic Stability Control
The Traction Control System (TCS) limits wheel spin. The system is on when the
vehicle is started.
The StabiliTrak system assists with directional control of the vehicle in difficult
driving conditions. The system is on when the vehicle is started.
To turn off traction control, press and re ...
Selecting a Station
Seek Tuning
If the radio station is not known:
Press SEEK
to automatically search for available
radio stations.
Hold and drag to the left or right of the radio station to automatically search
for available radio stations.
Manual Tuning
Continue pressing TUNE
to manually change the rad ...
Instrument Panel Fuse Block
The instrument panel fuse block is on the underside of the driver side instrument
panel.
The vehicle may not be equipped with all of the fuses, relays, and features shown.
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