The ECM sets DTC P0504 if the ECM detects signal of the brake warning lamp and the brake switch does not correlate within the predetermined time.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Plausibility check | 1. Poor connection 2. Open or short in Stop lamp switch 3. Faulty Stop lamp switch |
Enable Conditions |
•
IG On | |
Threshold Value |
•
Time brake light switch/brake test switch do not correlate longer than 100 times | |
Diagnostic Time |
•
- | |
MIL ON Condition |
•
NO MIL |
