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Stop Light & Brake Switch: Inspection

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

Fig 1: Measuring Brake Switch And Stop Light Switch Resistance
G03874168Courtesy of SAAB-SCANIA OF AMERICA, INC.
RESISTANCE SPECIFICATIONS

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

If NG, replace the stop light and brake switch.