F2
F2 CHECK BRAKE PEDAL RESERVE- Engine at idle.
- Press the brake pedal lightly three or four times.
- Wait 15 seconds for the vacuum to replenish.
- Push down on the brake pedal until it stops moving downward or and increased resistance to the brake pedal travel occurs.
NOTE: This increased resistance may feel like the pedal has bottomed out.
- Hold the brake pedal in the applied position while increasing the engine speed to 2000 RPM.
- Release the accelerator pedal.
- Does the brake pedal move downward as the engine speed returns to idle?
> Yes
Go to Pinpoint Test F3. F3
> No
Check vacuum to the power brake booster.