• | 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. |
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
---|---|---|---|---|
Brake Booster Vacuum Sensor | -- | -- | -- | C0299 |
The EBCM monitors the vacuum level in the power brake booster, and will set a DTC if the vacuum is too low.
• | The ignition is ON. |
• | Ignition voltage is greater than 9 volts. |
• | The engine is running for the vacuum related fault to set. |
• | A condition in which no vacuum is detected in the power brake booster for approximately 10 seconds after start-up. |
• | A condition in which low vacuum is detected in the power brake booster for approximately 60 seconds or longer after start-up, or is detected while driving. |
• | The condition for the DTC is no longer present. |
• | The EBCM automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles. |
Antilock Brake System Schematics
Antilock Brake System Connector End Views
⇒ | If the DTC is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle . |