For 1990-2009 cars only
Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
DTC Descriptors
DTC C0299 00: Brake Booster Pressure Sensor PerformanceDTC C0299 5A: Brake Booster Pressure Sensor Performance Plausibility Failure
Circuit/System Description
The power brake booster vacuum sensor monitors the vacuum level in the power brake booster. When the electronic brake control module (EBCM) detects the vacuum level is low a DTC is set.
Conditions for Running the DTC
The engine is running.
Conditions for Setting the DTC
Low or no vacuum is detected in the power brake booster after start-up.
Conditions for Clearing the DTC
| • | The condition for the DTC is no longer present. |
| • | The EBCM clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles. |
Reference Information
Schematic Reference
Antilock Brake System Schematics
Connector End View Reference
Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
- Verify that a vacuum leak is not present, refer to Brake Assist System Diagnosis.
- Verify that DTC C1100 is not set.
| ⇒ | If DTC is set, refer to DTC C1100. |
