Pinpoint Test E : C0040:64: Notes
Diagnostic Overview
C0040:64
Refer to Vehicle Dynamic Systems for schematic and connector information.
Normal Operation and Fault Conditions
The ABS module receives brake pedal switch input from the PCM over the HS-CAN. The ABS module compares this information against other inputs (wheel speed signals, vehicle speed signal, brake pressure input) to determine if the brake pedal input is valid. A brake pedal switch that is incorrectly installed can cause a signal plausibility concern.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| C0040:64 | Brake Pedal Switch A: Signal Plausibility Failure | This DTC sets in continuous memory and on-demand if the ABS module cannot detect the brake pedal input or if the brake pedal input does not match information from other sensors (wheel speed signals, vehicle speed signal, brake pressure transducer). |
Visual Inspection and Diagnostic Pre-checks
- Make sure the stoplamp switch electrical connector is connected and free of corrosion and other contaminants.
- Make sure the stoplamp switch is installed correctly.
- Make sure the stoplamp switch is operating correctly.