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Stop Light and Brake Switch: Inspection

Measure the brake switch (A) and stop light switch (B) resistance.

Fig 1: Measuring Brake Switch (A) And Stop Light Switch (B) Resistance
G03809568Courtesy of SUBARU OF AMERICA, INC.
RESISTANCE SPECIFICATIONS

Switch Pedal Terminal No. Standard
Brake Released 1 and 4 Less than 1 ohm
Depressed 1 and 4 More than 1 Mohm
Stop light Released 2 and 3 More than 1 Mohm
Depressed 2 and 3 Less than 1 ohm

If NG, replace the stop light and brake switch.