ECM sets DTC P0504 if the ECM detects signal of the brake lamp switch and brake switch do not correlate within the predetermined time.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Plausibility check | 1. Poor connector connection 2. Open or short in circuit 3. Faulty brake switch |
Enable Condition |
•
- | |
Threshold Value |
•
Brake switch signal and brake lamp signal does not correlate | |
Diagnostic Time |
•
30 sec. | |
MIL ON Condition |
•
- |
