• | 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 |
---|---|---|---|---|
5-Volt Reference | C1100 00 | C1100 00 | C1100 00 | -- |
Signal | C1100 00 | C1100 00 | C1100 00 | -- |
Low Reference | -- | C1100 00 | -- | -- |
The electronic brake control module (EBCM) provides a 5-volt reference to the brake booster vacuum sensor. The brake booster vacuum sensor converts the change in vacuum levels in the brake booster into a signal voltage ranging from 0.13-3.30 volts and is monitored by EBCM.
Ignition ON.
The brake booster sensor signal voltage is not within 0.13-3.30 volts for more than 1 second.
• | 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. |
Antilock Brake System Schematics
Control Module References for scan tool information
⇒ | If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the EBCM. |
⇒ | If less than the specified range, test the 5-volt reference circuit for an open/high resistance. If the circuit tests normal, replace the replace the EBCM. |
⇒ | If greater than the specified range, test the 5-volt reference circuit for a short to B+. If the circuit tests normal, replace the EBCM. |
⇒ | If less than the specified range, test the signal circuit for an open/high resistance. If the circuit tests normal, replace the EBCM. |
⇒ | If greater than the specified range, test the signal circuit for a short to B+. If the circuit tests normal, replace the EBCM. |
⇒ | If not the specified value, test the signal circuit for a short to ground. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for EBCM replacement, setup, and programming