83390H
1.INSPECT VACUUM WARNING SWITCH ASSEMBLY
Start the engine and stop it after 1 or 2 minutes.
Disconnect the connector from the vacuum warning switch assembly.
Measure the resistance of the vacuum warning switch assembly.
10 kΩ or higher
With the engine stopped, depress the brake pedal several times to release vacuum from the brake booster assembly, and measure the resistance of the vacuum warning switch assembly.
Below 1 Ω
Connect the connector to the vacuum warning switch assembly.