Step
| Action
| Value(s)
| Yes
| No
|
1
| Did
you perform the Hydraulic Brake Diagnostic System Check?
| --
|
Go to Step 2
| Go to
Hydraulic Brake Diagnostic System Check
.
|
2
| Inspect the brake pedal assembly for the following conditions:
| • | Bent or misaligned components |
| • | Binding or interference between the pedal and booster input rod |
Are the components misaligned or binding?
| --
|
Go to Step 3
|
Go to Step 4
|
3
| Repair or replace
the cause of misalignment, interference or binding.
Did you complete the repair?
| --
| Go to
Hydraulic Brake Diagnostic System Check
.
| --
|
4
| Inspect the disc brake pads and brake shoe linings for
the following conditions:
| • | Contaminated lining material |
| • | Incorrect lining material |
Refer to
Brake Pad Inspection
in Disc Brakes or
Brake Shoe Inspection
in Drum Brakes.
Did you find a condition?
| --
|
Go to Step 5
|
Go to Step
6
|
5
| Replace the brake linings. Refer
to the following procedures:
Did you complete the repair?
| --
| Go to
Hydraulic Brake Diagnostic System Check
.
| --
|
6
| Inspect the brake rotor for the following conditions:
| • | Grooved rotor surface |
Refer to
Brake Rotor Lateral Runout Check
in Disc Brakes.
Did you find a condition?
| --
|
Go to Step 7
|
Go to Step
8
|
7
|
- Refinish the brake rotor. Refer to
Brake Rotor Refinishing
in Disc Brakes.
- If refinishing the brake rotor results in a thickness that is
less than the thinnest (Refinishing) thickness, replace the rotor. Refer to
Front Brake Rotor Replacement
or
Rear Brake Rotor Replacement
in Disc Brakes.
Did you complete the repair?
| --
| Go to
Hydraulic Brake Diagnostic System Check
.
| --
|
8
| Inspect the vacuum brake booster for leaks.
Is the vacuum brake booster leaking?
| --
|
Go to Step 9
|
Go to Step 10
|
9
| Repair or replace
the vacuum brake booster. Refer to
Power Vacuum Brake Booster Replacement
.
Did you complete the repair?
| --
| Go to
Hydraulic Brake Diagnostic System Check
.
| --
|
10
| Inspect the master cylinder outlet ports for restricted
passages. Refer to
Hydraulic Brake System Bleeding
.
Are the outlet ports restricted?
| --
|
Go to Step 11
|
Go to Step
12
|
11
|
- Replace the master cylinder. Refer to
Master Cylinder Replacement
.
- Flush the hydraulic brake system. Refer to
Hydraulic Brake System Flushing
.
Did you complete the repair?
| --
| Go to
Hydraulic Brake Diagnostic System Check
.
| --
|
12
| Inspect the brake pipes and hoses for the following conditions:
| • | Low fluid or no fluid output |
| • | Spurting of fluid while pressing the brake pedal |
| • | Particles suspended in the fluid |
Refer to
Hydraulic Brake System Flushing
.
Did you find a condition?
| --
|
Go to Step 13
|
Go to Step
14
|
13
|
- Determine the area of the restriction. This will involve the disassembly
of individual brake lines and checking for low or no fluid output.
- Flush the individual brake line or hose. Refer to
Hydraulic Brake System Flushing
.
- If the restriction cannot be removed, replace the brake hose or
pipe as necessary. Refer to
Front Brake Hose Replacement
or
ISO Flares Replacement
.
- Flush the hydraulic brake system. Refer to
Hydraulic Brake System Flushing
.
Did you complete the repair?
| --
| Go to
Hydraulic Brake Diagnostic System Check
.
| --
|
14
| Verify proper brake system operation.
Does the original condition still exist?
| --
| Verify customer
complaint.
Go to Step 1.
| System OK
|
