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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