DTC C1100
Diagnostic Instructions
DTC Descriptors
| DTC C1100 00: Brake Pressure Sensor 2
Malfunction |
| DTC C1100 01: Brake Pressure Sensor 2 Short to
Battery |
| DTC C1100 02: Brake Pressure Sensor 2 Short to
Ground |
| DTC C1100 08: Brake Pressure Sensor 2
Performance - Signal Invalid |
| DTC C1100 09: Brake Pressure Sensor 2 Too Fast
Transitions |
| DTC C1100 5A: Brake Pressure Sensor 2 Not
Plausible |
Diagnostic Fault Information
Circuit
|
Short to Ground
|
Open/High Resistance
|
Short to Voltage
|
Signal Performance
|
5V Reference
|
C1100 00, C1100 02
|
C1100 00, C1100 08
|
C1100 00, C1100 01
|
-
|
Signal
|
C1100 00, C1100 02
|
C1100 00
|
C1100 00, C1100 01
|
C1100 08, C1100 09, C1100 5A
|
Low Reference
|
-
|
C1100 00
|
-
|
-
|
|
| |
Circuit/System Description
The brake booster vacuum sensor monitors the pressure in the
brake booster. The electronic brake control module (EBCM) supplies
a 5 V reference and a low reference circuit to the brake booster
vacuum sensor. The vacuum sensor supplies a voltage signal in
relation to the pressure in the brake booster to the EBCM.
Conditions for Running the DTC
Ignition ON.
Conditions for Setting the DTC
C1100 01
A short to voltage or open/high resistance is detected on the
vacuum sensor signal circuit.
C1100 02
A short to ground or open/high resistance is detected on the vacuum
sensor signal circuit.
C1100 08, C1100 09
A invalid signal is detected on the vacuum sensor signal circuit.
Action Taken When the DTC Sets
The brake warning indicator turns ON.
Conditions for Clearing the DTC
| • |
A current DTC clears when the
diagnostic runs and passes. |
| • |
The EBCM will turn OFF the
indicator in the next ignition cycle. |
Reference Information
Schematic Reference
Hydraulic Brake Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Hydraulic Brake System Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Testing
| 1. |
Ignition OFF, disconnect the
harness connector at the B19B Brake Booster Vacuum Sensor.
|
| 2. |
Test for less than 5 Ω
between the low reference circuit terminal 2 and ground.
|
| ⇒ |
If greater than the specified value, test the low
reference circuit for an open/high resistance. If the circuit tests
normal, replace the K17 Electronic Brake Control Module. |
| 3. |
Ignition ON, test for 4.8-5.2
V between the 5 V reference circuit terminal 3 and ground.
|
| ⇒ |
If greater than the specified range, test the 5 V
reference circuit for a short to voltage. If the circuit tests
normal, replace the K17 Electronic Brake Control Module. |
| ⇒ |
If less than the specified range, test the 5 V
reference circuit for an open/high resistance. If the circuit tests
normal, replace the K17 Electronic Brake Control Module. |
| 4. |
Ignition OFF, disconnect the
harness connector at the K17 Electronic Brake Control
Module. |
| 5. |
Ignition ON, test for less
than 0.3 V between the signal circuit terminal 1 at the B19B Brake
Booster Vacuum Sensor harness connector and ground. |
| ⇒ |
If greater than the specified value, test the
signal circuit for a short to voltage. |
| 6. |
Ignition OFF, test for
infinite resistance between the signal circuit terminal 1 and
ground. |
| ⇒ |
If less than the specified value, test the signal
circuit for a short to ground. |
| 7. |
Test for less than 5 Ω
between the signal circuit terminal 1 at the B19B Brake Booster
Vacuum Sensor harness connector and terminal 22 at the K17
Electronic Brake Control Module harness connector. |
| ⇒ |
If greater than the specified value, test the
signal circuit for an open/high resistance. |
| 8. |
If all circuits test normal,
replace the B19B Brake Booster Vacuum Sensor and verify the DTC
does not reset. If the DTC resets, replace the K17 Electronic Brake
Control Module. |
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic
procedure.
|
