Monitor Scan Tool Data
- Connect scan tool to Data Link Connector (DLC).
- Ignition "ON" & Engine "ON"
- Press the brake pedal.
- Monitor the "STOP LAMP SWITCH" parameter on the scan tool.
Specification: Lateral G sensor: ± 0 G, YAW rate Sensor: ± 0 deg/s
- Whenever brake pedal is pushed down, is the brake switch's scan tool data changed ON/OFF?
YES
- Fault is intermittent caused by poor connection in Yaw Rate & Lateral G sensor harness and/or HECU's connector or was repaired and HECU memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination.
NO
- Go to TERMINAL & CONNECTOR INSPECTION procedure.