Table of Contents
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1.0 INTRODUCTION
The procedures contained in this manual include
all the specifications, and graphics needed to diag-
nose the Mark20e Antilock Braking System (ABS)
and the Mark20e with Traction Control. The diag-
nostics in this manual are based on the failure
condition or symptom being present at time of
diagnosis.
Please follow the recommendations below when
choosing your diagnostic path.
1. First make sure the DRBIII is communicating
with the CAB. If the DRBIII
Response" condition, you must diagnose that
first.
2. Read DTC's (diagnostic trouble codes) with the
DRBIII .
3. If no DTC's are present, identify the customer
complaint.
4. Once the DTC or customer complaint is identi-
fied, locate the matching test in the Table of
Contents and begin to diagnose the symptom.
All component location views are in Section 8.0.
All connector pinouts are in Section 9.0. All sche-
matics are in Section 10.0.
An asterisk (*) placed before the symptom de-
scription indicates a customer complaint.
When repairs are required, refer to the appropri-
ate service manual for the proper removal and
repair procedure.
Diagnostic procedures change every year. New
diagnostic systems may be added; carryover sys-
tems may be enhanced. READ THIS MANUAL
BEFORE TRYING TO DIAGNOSE A VEHICLE
CODE. It is recommended that you review the
entire manual to become familiar with all new and
changed diagnostic procedures.
After using this book, if you have any comments
or recommendations, please fill out the form at the
back of the book and mail it back to us.
1.1 SYSTEM COVERAGE
This diagnostic procedure manual covers the an-
tilock braking system (ABS) and traction control
system found on: Chrysler Sebring Convertible/
Sedan and Dodge Stratus Sedan.
1.2 SIX-STEP TROUBLESHOOTING
PROCEDURE
Diagnosis of the controller antilock brake module
is done in six basic steps:
•
verification of complaint
•
verification of any related symptoms
•
symptom analysis
•
problem isolation
•
repair of isolated problem
•
verification of proper operation
2.0 IDENTIFICATION OF
Vehicles equipped with the Teves Mark20e an-
tilock brake system can be identified by the pres-
ence of the controller antilock brake module located
along with HCU. The CAB and HCU are on the left
displays a "No
side beneath the air cleaner.
3.0 SYSTEM DESCRIPTION AND
3.1 TEVES MARK20e SYSTEM
The controller antilock brake module is used to
monitor wheel speeds and to modulate (control)
hydraulic pressure in each brake channel. The
modulated hydraulic pressure is used to prevent
wheel lock-up during braking.
The Teves Mark20e system uses a diagonal split
hydraulic brake system. In the standard brake
mode the master cylinder primary circuit supplies
pressure to the right front and left rear wheel
brakes, and the secondary master cylinder circuit
supplies pressure to the left front and right rear
wheel brakes.
All vehicles equipped with ABS use Electronic
Variable Brake Proportioning (EVBP) to balance
front-to-rear braking when brakes are applied in
the partial braking range.
During an antilock stop the Mark20e system uses
four-channel operation. This means that during
antilock operation each wheel brake is indepen-
dently controlled. By using a separate hydraulic
channel for each wheel, the system is able to retain
directional stability and steering control while ap-
plying maximum braking. The system provides
maximum braking even when road conditions vary.
3.2 TRACTION CONTROL SYSTEM (TCS)
The Traction Control System is available on this
vehicle. The main purpose of traction control is to
reduce wheel slip and maintain traction at the
driven wheels when road surfaces are wet or snow
covered. The traction control system reduces wheel
1
GENERAL INFORMATION
SYSTEM
FUNCTIONAL OPERATION
DESCRIPTION
DESCRIPTION (IF EQUIPPED)
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