01PTEC

[ Pobierz całość w formacie PDF ]
TABLE OF CONTENTS
.........................................................1
...............................................1
..........................1
.............................................1
......................1
..................................1
....................2
....................2
......................................3
....................3
........................3
..................................4
..................................................4
..................................4
......................................4
.........................................5
.................5
T
.................................................5
DRBIII
T
.........................................5
DRBIII
T
...............5
.....................................5
.......................................6
......................................................6
...........................................................6
...........................6
.........................6
................................6
DRBIII
T
................................6
.........................................................7
................................7
........................7
........................................................7
......................................7
...................................................8
............................9
.............................................10
.......................................................13
.................................................14
..............................................16
..................................17
...................................22
...................................25
....................................30
i
TABLE OF CONTENTS - Continued
..............................................33
.................................35
.................................38
..................................43
..................................46
...................................51
................................................54
...............................................56
...........................................58
.............................................61
...................................................63
...............................................65
....................................65
...........................................65
...........................................................65
........................................66
....................................................66
....................................................66
...............................................67
.....................................68
......................................68
.................................................................69
.................................................71
.....................................71
................................71
.................................72
................................................................74
....................................................74
................................................74
................................................75
......................75
......................75
.......................75
.......................76
................................................................78
.......................................78
.........................................78
........................................78
.....................................................79
......................................79
..........................................................79
......................................79
........................................79
..........................80
.....................80
.....................80
ii
TABLE OF CONTENTS - Continued
......................81
......................81
.............................81
.............................82
.................................................83
iii
NOTES
iv
GENERAL INFORMATION
1.0
INTRODUCTION
repair of isolated problem
²
verification of proper operation
²
The procedures contained in this manual include
all the specifications, instructions, and graphics
needed to diagnose Mark 20 Antilock Braking Sys-
tem (ABS) problems. The diagnostics in this man-
ual 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
2.0
IDENTIFICATION OF
SYSTEM
Vehicles equipped with the Teves Mark 20 an-
tilock brake system with traction control can be
identified by the presence of the hydraulic control
unit located with the controller antilock brake
(CAB) under the hood near the air cleaner housing,
or by observing the ABS lamp illumination during
the bulb check.
is communicating
with the CAB. If the DRBIII
t
displays a “No
Response” condition, you must diagnose that
first.
2. Read DTC’s (diagnostic trouble codes) with the
DRBIII
t
3.0
SYSTEM DESCRIPTION AND
FUNCTIONAL OPERATION
.
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 * placed before the symptom description indi-
cated 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.
t
3.1
TEVES ABS SYSTEM DESCRIPTION
This section covers the physical and operational
descriptions, and the diagnostic service procedures
for the Teves Mark 20 Antilock Brake System with
traction control. It is the only antilock brake system
(ABS) available on this vehicle.
The purpose of the antilock brake system is to
prevent wheel lockup under braking conditions on
virtually any type of road surface. Antilock braking
is desirable because a vehicle that is stopped with-
out locking the wheels retains directional stability
and some steering capability. This allows the driver
to retain greater control of the vehicle during brak-
ing.
All vehicles are equipped with ABS and use
Electronic Brake Distribution (EBD) to balance
front-to-rear braking when the brakes are applied
in the partial braking range.
A Controller Antilock Brake (CAB) module is
used to monitor wheel speeds and to modulate
(control) hydraulic pressure in each brake channel
when ABS or traction control are actuated.
During a non-ABS stop, the system functions as a
standard diagonally split configuration. The pri-
mary supplies brake fluid pressure to the right
front and left rear brakes, and the secondary sup-
plies the right rear and left front brakes. A conven-
tional proportioning valve is not used. This system
uses the existing ABS solenoids to replace and
perform the same functions that the proportioning
valves do. The CAB has a special software program
that monitors the wheel speeds and when certain
critera are met the software will enable the sole-
noids to perform the same brake fluid management
control as the proportioning valves.
During an ABS stop, the system still uses the
diagonally hydraulic split; however, the brake sys-
1.1
SYSTEM COVERAGE
This diagnostic manual covers the Teves Mark 20
Antilock Braking System (ABS) with traction con-
trol found on the 2001 PT Cruiser.
1.2
SIX-STEP TROUBLESHOOTING
PROCEDURE
Diagnosis of the antilock brake system is done in
six basic steps:
²
verification of complaint
verification of any related symptoms
²
symptom analysis
²
problem isolation
²
1
  [ Pobierz całość w formacie PDF ]