FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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Scantool Diagnostics





Engine Control
P0504 Brake Switch "A"/"B" Correlation - Scantool Diagnostics

Monitor GDS Data

1. Connect GDS to Data Link Connector(DLC).
2. Engine start and drive the vehicle on the road.
3. Monitor the "brake switch" parameters on the GDS.








Fig.1) Normal data of Brake Switch on.
Fig.2) Normal data of Brake Switch off.
4. Are the parameters displayed correctly ?