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Stoplight Switch Check

  1. Disconnect the stoplight switch harness connector.
  2. Check for continuity between the terminals of the switch.
TERMINAL CONTINUITY REFERENCE CHART

Measurement condition Terminal connector of tester Specified condition
When brake pedal is depressed. 1 - 2 (for stoplight switch) Continuity (less than 2 ohms)
3 - 4 (for brake switch) Open circuit
When brake pedal is not depressed. 1 - 2 (for stoplight switch) Open circuit
3 - 4 (for brake switch) Continuity (less than 2 ohms)
Fig 1: Checking Continuity Between Stoplight Switch Terminals
G05375521Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.