Normal Operation
WARNING: This page is about a different car, the 2011 Mercury Milan, 2011 Lincoln MKZ, and 2011 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
The vacuum pressure sensor produces 2 signals used by the ABS module to check the integrity of the vacuum lines, hoses and fittings, and to measure the performance of the brake vacuum pump and brake booster. The ABS module provides a 5-volt reference voltage to the vacuum pressure sensor. The ABS module provides a signal return to the vacuum pressure sensor along circuit.
DTC DESCRIPTION TABLE
| DTC Description | Fault Trigger Conditions |
|---|---|
|
If vacuum pressure sensor circuit is shorted to ground, shorted to voltage or has high resistance, this DTC sets. A short to ground or a short to voltage, or an open on or short to voltage on circuit could cause both DTCs C101A: 1C and C101B:1C to set. |
|
If the 2 vacuum pressure signals produced by the vacuum pressure sensor do not match, this DTC sets. If vacuum sensor circuit has high resistance (open circuit), this DTC sets. This DTC can set as a result of DTCs C101A: 1C, 64 and C101B:1C. |
|
If the vacuum pressure sensor signal A, circuit is shorted to vacuum pressure sensor signal B, circuit, this DTC sets. |
|
If vacuum pressure sensor circuit is shorted to ground, shorted to voltage or has high resistance, this DTC sets. A short to ground or a short to voltage on circuit, or an open on or short to voltage on circuit could cause both DTCs C101A:1C and C101B:1C to set. |
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Vacuum pressure sensor
- ABS module