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2003
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GS 300 L6-3.0L (2JZ-GE)
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Repair and Diagnosis
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Brakes and Traction Control
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Antilock Brakes / Traction Control Systems
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Testing and Inspection
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Component Tests and General Diagnostics
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ABS W/Hydraulic Brake Booster Power Supply System
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Brake Warning Light Circuit
Brake Warning Light Circuit
CIRCUIT DESCRIPTION
The BRAKE warning light light up while the
brake fluid
is insufficient and when ECU detects malfunction of
hydraulic brake booster
system.
Wiring Diagram:
Step 1:
Step 2 - 5:
INSPECTION PROCEDURE