On-Vehicle Inspection

WARNING: This page is about a different car, the 2007 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.

CHECK BRAKE FLUID LEVEL WARNING SWITCH

Remove the reservoir filler cap and strainer.
Disconnect the brake fluid level warning switch connector.

Measure the resistance of the switch.

HINT:

There is a float inside the reservoir. Its position can be changed by increasing or decreasing the brake fluid level.

Standard resistance

TESTER CONNECTION AND SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
1 - 2	Float up (Switch OFF)	10 k or higher
1 - 2	Float down (Switch ON)	Below 1

If the value is not as specified, replace the brake master cylinder reservoir sub-assembly.

Add brake fluid to the MAX level.

Fig 1: Checking Brake Fluid Level Warning Switch
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