Dodge Neon 2001, Service Manual

Page: 17 / 743

CONDITION POSSIBLE CAUSES CORRECTION
EXCESSIVE PEDAL
TRAVEL (PEDAL GOES
TO FLOOR - CAN’T SKID
WHEELS) 1. Power brake booster runout
(vacuum assist). 1. Check booster vacuum hose and
engine tune for adequate vacuum
supply. Refer to power brake booster in
the diagnosis and testing section.
EXCESSIVE PEDAL
TRAVEL (ONE FRONT
WHEEL LOCKS UP
DURING HARD BRAKING) 1. One of the two hydraulic circuits
to the front brakes is malfunctioning. 1. Inspect system for leaks. Check
master cylinder for internal malfunction.
PEDAL PULSATES/
SURGES DURING
BRAKING 1. Rear brake drum out of round or
disc brake rotor has excessive
thickness variation. 1. Isolate condition as rear or front.
Reface or replace brake drums or
rotors as necessary.
PEDAL IS SPONGY 1. Air in brake lines. 1. Bleed brakes.
2. Power brake booster runout
(vacuum assist). 2. Check booster vacuum hose and
engine tune for adequate vacuum
supply. Refer to power brake booster in
the diagnosis and testing section.
PREMATURE REAR
WHEEL LOCKUP 1. Contaminated brake shoe linings. 1. Inspect and clean, or replace shoes.
Repair source of contamination.
2. Inoperative proportioning valve
(non-ABS vehicles only). 2. Test proportioning valves folowing
procedure listed in diagnosis and
testing section. Replace valves as
necessary.
3. ABS EBD not functioning. 3. Refer to the ABS section and
Chassis Diagnostic Procedures manual.
4. Improper power brake booster
assist. 4. Refer to power brake booster in the
diagnosis and testing section.
STOP LAMPS STAY ON 1. Brake lamp switch out of
adjustment. 1. Adjust brake lamp switch.
2. Brake pedal binding. 2. Inspect and replace as necessary.
3. Obstruction in pedal linkage. 3. Remove obstruction.
4. Power Brake Booster not allowing
pedal to return completely. 4. Replace power brake booster.
VEHICLE PULLS TO
RIGHT OR LEFT ON
BRAKING 1. Frozen brake caliper piston. 1. Replace frozen piston or caliper.
Bleed brakes.
2. Contaminated brake shoe lining. 2. Inspect and clean, or replace shoes.
Repair source of contamination.
3. Pinched brake lines. 3. Replace pinched line.
4. Leaking piston seal. 4. Replace piston seal or brake caliper.
5. Suspension problem. 5. Refer to the Suspension group.
PARKING BRAKE -
EXCESSIVE HANDLE
TRAVEL 1. Rear brakes out of adjustment. 1. Adjust rear drum brake shoes, or
rear parking brake shoes on vehicles
with rear disc brakes.
5s - 4 BRAKES-BASE
PL
BRAKES-BASE (Continued)
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2001 NEON