Brake Light Switch Check

Ignition "ON" & Engine "OFF".
Disconnect the brake light switch connector.
Measure resistance between power terminal and signal terminal of the brake light switch A, B connector.
Specification : Resistance between terminals of the brake light switch A - ∞ Ω (when the plunger is pushed down), 0Ω (when the plunger isn't pushed down).

Resistance between the terminals of the brake light switch B - ∞ Ω (when the plunger is not pushed down), 0Ω (when the plunger is pushed down).
Is the measured value within specifications?
YES:
- Fault is intermittent caused by poor connection in brake light switch harness and/or HECU's connector.
  Go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO:
- Substitute with a known-good brake light switch and check for proper operation
  If problem is corrected, replace brake light switch and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.