Chrysler PT Cruiser Service & Repair Manual page 315
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- Owner's manual (491 pages) ,
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- Owner's manual (368 pages)
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ELECTRONIC CONTROL MODULES
. . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
REMOVAL
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
. . . . . . . . . . . . . . . . . . . . . . . . . . 3
. . . . . . . . . . . . . . . . . . . . . . . . . . 3
OPERATION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
. . . . . . . . . . . . . . . . . . . . . . . . . . 3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
. . . . . . . . . . . . . . . . . . . . . . . . . . 5
INPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
RECEIVE - PCM INPUT . . . . . . . . . . . . . . . . . . 5
INPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
OPERATION
. . . . . . . . . . . . . . . . . . . . . . . . . . 6
OUTPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
CONTROLLER ANTILOCK
BRAKE
DESCRIPTION
The controller antilock brake (CAB) is a micropro-
cessor-based device which monitors the ABS system
during normal braking and controls it when the vehi-
cle is in an ABS stop. The CAB uses a 24-way elec-
trical connector on the vehicle wiring harness. The
power source for the CAB is through the ignition
switch in the RUN or ON position. The CAB is on
the PCI bus.
The CAB is mounted to the HCU as part of the
Integrated Control Unit (ICU) (Fig. 1). Attached to
the bottom of the HCU, it can be viewed from below,
just above the transaxle and left halfshaft (Fig. 2).
For information on the ICU, (Refer to 5 - BRAKES/
HYDRAULIC/MECHANICAL/ICU
CONTROL UNIT) - DESCRIPTION)
TABLE OF CONTENTS
page
REMOVAL
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
. . . . . . . . . . . . . 5
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
OPERATION
The primary functions of the controller antilock
brake (CAB) are to:
• monitor the antilock brake system for proper
operation.
• detect wheel locking or wheel slipping tenden-
cies by monitoring the speed of all four wheels of the
vehicle.
• control fluid modulation to the wheel brakes
while the system is in an ABS mode or the traction
control system is activated.
• store diagnostic information.
• provide communication to the DRBIII scan tool
while in diagnostic mode.
The CAB constantly monitors the antilock brake
system for proper operation. If the CAB detects a
fault, it will send a message to the mechanical
instrument cluster (MIC) instructing it to turn on the
(INTEGRATED
amber ABS warning indicator lamp and disable the
ELECTRONIC CONTROL MODULES
DIAGNOSTIC TROUBLE CODES . . . . . . . . . . 10
FACTOR SETTING . . . . . . . . . . . . . . . . . . . . . 10
PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . 10
. . . . . . . . . . . . . . . . . . . . . . 11
. . . . . . . . . . . . . . . . . . 14
. . . . . . . . . . . . . . . . . . . . . . . . . 15
. . . . . . . . . . . . . . . . . . . . . . . . . . . 16
. . . . . . . . . . . . . . . . . . . . . . . . . 17
. . . . . . . . . . . . . . . . . . . . . . . . . 17
. . . . . . . . . . . . . . . . . . . . . . . . . . . 17
. . . . . . . . . . . . . . . . . . . . . . . . . 20
8E - 1
page
. . . . . . . 12
. . 15
. . . . 16
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