Chrysler 2005 Sebring, Руководство по обслуживанию, Страница: 351 / 3204

Before road testing a brake complaint vehicle, note
whether the red BRAKE warning indicator lamp, amber
ABS warning indicator lamp, or both are turned on.
If it is the red BRAKE warning indicator, there is a
brake hydraulic problem that must be corrected before
driving the vehicle. Refer to the Base Brake System -
Diagnosis And Testing. If the MIC determines the
amber ABS warning indicator is not functioning, it will
illuminate the red BRAKE warning indicator.
If the amber ABS warning indicator is on, road test
the vehicle as described below. While the amber ABS
warning indicator is on, the ABS is not functional.
The ability to stop the car using the base brake sys-
tem should not be affected.
If both the red BRAKE and the amber ABS warn-
ing indicators are illuminated, there is possibility
that there is an ABS problem. For some failures the
ABS unit will discontinue ABS as well as EVBP and
illuminate both the red BRAKE and the amber ABS
warning indicators.
B ra k in g a bility m a y be
re d u c e d .
Before road testing, read DTC’s and refer
to the Appropriate Diagnostic Information. Also, the
MIC will illuminate both the red BRAKE and the
amber ABS warning indicators if the ABS antilock
brake module is not communicating on the BUS.
(6) Turn the key to the OFF position and then
back to the ON position. Note whether the amber
ABS warning lamp continues to stay on.
(7) If the amber ABS warning indicator lamp stays
on, shift into gear and drive the car to a speed of
approximately 25 km/h (15 mph) to complete the ABS
Start-Up and Drive-Off Cycles (Refer to 5 - BRAKES
- ABS - OPERATION). If at this time the amber ABS
warning indicator lamp stays on, refer to the Appro-
priate Diagnostic Information.
(8) If the amber ABS warning indicator lamp goes
out at any time, drive the vehicle a short distance.
Accelerate the vehicle to a speed of at least 64 km/h
(40 mph). Bring the vehicle to a complete stop, brak-
ing hard enough to cause the ABS to cycle. Repeat
this action several times. Using the scan tool, read
and record any Diagnostic Trouble Codes (DTCs). If
any DTCs are present, refer to the Appropriate Diag-
nostic Information.
STANDARD PROCEDURE - ANTILOCK BRAKE
SYSTEM BLEEDING
The base brake’s hydraulic system must be bled
anytime air enters the hydraulic system. The ABS
though, particularly the ICU (HCU), should only be
bled when the HCU is replaced or removed from the
vehicle. The ABS must always be bled anytime it is
suspected that the HCU has ingested air. Under
most circumstances that require the bleeding of the
brakes hydraulic system, only the base brake
hydraulic system needs to be bled.
It is important to note that excessive air in the
brake system will cause a soft or spongy feeling
brake pedal.
During the brake bleeding procedure, be sure the
brake fluid level remains close to the FULL level in
the master cylinder fluid reservoir. Check the fluid
level periodically during the bleeding procedure and
add DOT 3 brake fluid as required.
The ABS must be bled as two independent braking
systems. The non-ABS portion of the brake system with
ABS is to be bled the same as any non-ABS system.
The ABS portion of the brake system must be bled
separately. Use the following procedure to properly
bleed the brake hydraulic system including the ABS.
BLEEDING
When bleeding the ABS system, the following
bleeding sequence must be followed to insure com-
plete and adequate bleeding.
(1) Make sure all hydraulic fluid lines are installed
and properly torqued.
(2) Connect the scan tool to the diagnostics connector.
The diagnostic connector is located under the lower
steering column cover to the left of the steering column.
(3) Using the scan tool, check to make sure the
ABM does not have any fault codes stored. If it does,
clear them using the scan tool.
WARNING: WHEN BLEEDING THE BRAKE SYSTEM
WEAR SAFETY GLASSES. A CLEAR BLEED TUBE
MUST BE ATTACHED TO THE BLEEDER SCREWS
AND SUBMERGED IN A CLEAR CONTAINER FILLED
PART WAY WITH CLEAN BRAKE FLUID. DIRECT THE
FLOW OF BRAKE FLUID AWAY FROM YOURSELF AND
THE PAINTED SURFACES OF THE VEHICLE. BRAKE
FLUID AT HIGH PRESSURE MAY COME OUT OF THE
BLEEDER SCREWS WHEN OPENED.
(4) Bleed the base brake system using the stan-
dard pressure or manual bleeding procedure. (Refer
to 5 - BRAKES - BASE - STANDARD PROCEDURE)
(5) Using the scan tool, select ANTILOCK
BRAKES, followed by MISCELLANEOUS, then
BLEED BRAKES. Follow the instructions displayed.
When the scan tool displays TEST COMPLETED,
disconnect the scan tool and proceed.
(6) Bleed the base brake system a second time.
Check brake fluid level in the reservoir periodically
to prevent emptying, causing air to enter the hydrau-
lic system.
(7) Fill the master cylinder reservoir to the full level.
(8) Test drive the vehicle to be sure the brakes are
operating correctly and that the brake pedal does not
feel spongy.
5 - 54 BRAKES - ABS
JR
BRAKES - ABS (Continued)