Ignition switch "OFF"
Disconnect battery (-) cable.
Refer to "Shop Manual" and remove brake switch.
Measure the continuity between Pin No. 1 (power) terminal and Pin No. 2 (Signal) terminal of brake switch with "MVOM" of GDS function.
Specification : Plunger is pushed : Infinite (No continuity measured) / Plunger is not pushed : Continuity measured
Is the measured value within specification?
![]() | ▶ Fault is intermittent caused by poor contact in the sensor’s and/or ECM’s connector or was repaired and ECM memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "Verification of vehicle Repair" procedure. |
![]() | ▶ Carefully re-do this troubleshooting guide steps. ▶ If no problems were found with the circuits or connectors, replace the Brake switch and go to "Verification of Vehicle Repair" procedure. |
When installing component, tighten it within specification
If component is dropped, check for proper operation. The internal damage may be present