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 ...
Master Cylinder Bench Bleeding
Warning: Refer to Brake Fluid Irritant Warning.
Caution: Refer to Brake Fluid Effects on Paint and Electrical
Components Caution.
Secure the mounting flange of the bra ...
Other materials:
Front Compartment Fuse Block Replacement
Removal Procedure
Disconnect the battery negative cable. Refer to Battery Negative Cable
Disconnection and Connection.
Remove the junction block cover (1).
Remove the positive battery cable nut (1) from the junction block.
Remove the pos ...
Engine Front Cover and Oil Pump Disassemble
Engine Front Cover Disassemble
Remove the intake camshaft position sensor bolt (1).
Remove the intake camshaft position sensor (2) and the seal ring (3).
Remove the exhaust camshaft position sensor bolt (6).
Remove the exhaust camshaft posi ...
Input and Output Speed Sensor Removal
Input and Output Speed Sensor Removal
Callout
Component Name
1
A/Trans Output Speed Sensor Bolt M6 x 18 (Qty: 1)
2
A/Trans Output Speed Sensor Assembly
...
0.008