Repair Guideline Tester-Display No. Work Instructions Set Value Fault Codes Connection Troubleshooting : Set Value : Causation : 28 ABS REPAIR GUIDELINES 2 Brake light switch Ignition on C1161 BLS (pin14) malfunction Brake not actuated Switch inactive,0V Brake actuated Switch active,12V Ignition on • Brake not actuated • 0 V • Brake lights must not illuminate • Positive short with line BLS 14 or with line switch “NC side”, or line to rear lights. • Brake actuated • 12V (UBatt) • Brake lights, left, middle and right illuminate • Fuse defective • Open circuit in line between fuse and switch “connection side” • Switch defective • Open circuit in line between switch NC side and ECU pin BLS 14 • Open circuit in line between switch NC side and brake lights
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