Ford Falcon. Manual — part 81
206-09-13
Anti Lock Control
206-09-13
DESCRIPTION AND OPERATION (Continued)
TCS in operation
G23420 en
206-09-14
Anti Lock Control
206-09-14
DIAGNOSIS AND TESTING
It is important that all of the steps in the Procedure
Anti Lock Control
are followed to avoid the unnecessary replacement of
parts that are not faulty and to ensure that the
Principles of Operation
ABS/TCS system is returned to its designed operating
The ABS/TCS system has a self-test capability and
condition.
will memorise faults for 125 key starts. Fault codes
Procedure
are accessed using the WDS tester. Self-test codes
are held in the EPROM and can only be cleared using 1. Complete an ABS/TCS Concern Customer
the WDS tester. Up to 3 “on demand” or “stored”
Questionnaire. Determine whether or not the
codes can be logged by the ECU. It is essential that
issues raised indicate a fault with the ABS/TCS
the system is retested after any fault is rectified until
system or are in fact normal operating
no further on-demand codes are displayed.
characteristics of ABS/TCS systems in general.
The self test connector is located behind the fuse box 2. If a fault is indicated, proceed to the ABS/TCS
panel cover (underneath the instrument panel on the
Diagnostic Procedure table.
right of the steering column). Follow the operating
3. Follow the table. If any hard or memory DTCs are
procedures provided with the test equipment.
displayed, refer to the DTC Table for a definition
WDS Tester
and reference to the appropriate pin point test
flow chart for each DTC.
The WDS tester is used to communicate serially with
4. When the table directs you to return to the ABS
the ABS module for diagnostics. The WDS must be
Diagnostic Procedure table, return to the
used to carry out the following functions/tests on the
“RETURN FROM PIN POINT TEST” box and
ABS system:
proceed to confirm the repair.
Diagnostic Test Modes
NOTE: Ensure that all memory DTCs are cleared
Trouble code clearing
PRIOR to confirming the repair. If hard DTCs still
PIDs/Data monitoring
exist then the related faults also still exist.
Function test — to operate ABS modulator
5. Confirm the repair by following the ABS/TCS
components
Diagnostic Procedure table. If at any time the ABS
NOTE: When operating the ABS pump using the
or traction control warning lamp flashes or
WDS tester, the pump should not be allowed to run
illuminates (other than the normal 3-second
for more than 5 seconds. After confirming pump
period after the ignition is switched on) then there
operation, switch off the pump motor by pressing the
is a fault within the ABS/TCS system.
WDS button.
6. In the event that the same DTC appears, continue
to follow the flow chart back to the same pin point
Inspection and Verification
test flow chart. Conduct the same checks and if
no fault is found the flow chart will direct you to
If a vehicle is presented with an ABS/TCS concern,
replace the ABS Modulator Assembly.
indicated either by way of the ABS or traction control
NOTE: The ABS/TCS Modulator Assembly is a
warning lamp or by the Owner/Driver reporting an
critical safety item. It should only be installed by
unexpected operating characteristic (eg noise,
trained and experienced ABS Technicians. After
vibration, wheel lock-up, spinning wheels, etc.) follow
replacing the ABS/TCS Modulator Assembly, it
the Diagnosis Procedure to:
will still be necessary to confirm the repair by
determine whether or not there is a fault with the
returning to the ABS/TCS Diagnostic Procedure
ABS/TCS system
table.
locate and isolate the fault
7. At the conclusion of the road test if there are no
rectify the fault
DTCs then the system can be considered to be
confirm the repair with an ABS/TCS road test.
working correctly and is ready for return to the
Owner/Driver.
G23421 en
206-09-15
Anti Lock Control
206-09-15
DIAGNOSIS AND TESTING (Continued)
ABS/TCS CONCERN CUSTOMER QUESTIONNAIRE
Customer’s Name________________________
R/O Number________________________
Registration Number______________________
Date______________________________
Odometer Reading_______________________
PROBLEM DESCRIPTION
1. Do the ABS and traction control warning lamps come on when you start the car?
Yes No
2. Do the ABS or traction control Lamps turn off after 3 seconds or do they stay on or flash?
Turns Off Stays On Flashes
3. Do the ABS or traction control lamps flash or stay on whilst driving? No Stays On Flashes
4. If not the warning lamp, what caused you to suspect a fault with the ABS or TCS system?
Was it Noise? Please describe the noise, and whether it occurred during braking, during an ABS stop,
during heavy acceleration or at some other time.
_______________________________________________________________________________________
_______________________________________________________________________________________
or was it Vibration/Harshness? Please describe the vibration/harshness, and whether it occurred during
braking, during an ABS stop or at some other time.
_______________________________________________________________________________________
_______________________________________________________________________________________
or was it the feel/travel of the brake pedal? Please describe how the brake pedal behaved, and whether it
occurred during braking, during an ABS stop or at some other time.
_______________________________________________________________________________________
_______________________________________________________________________________________
Other_______________________________________________________________________
_______________________________________________________________________________________
5. How often does it happen?
Frequently Infrequently Once
6. Does it usually happen only under specific circumstances? (eg. only when the vehicle is cold, only in
the wet, only on rough or slippery surface roads, etc)
_______________________________________________________________________________________
_______________________________________________________________________________________
VEHICLE HISTORY
1. Have you had any repairs made to your vehicle recently? Describe.
_______________________________________________________________________________________
2. Have you had new tyres fitted or have you had a flat tyre recently?
Yes No
3. Have you had a flat battery recently?
Yes No
4. Have you had the ABS system checked or repaired previously? If so, when and why?
_______________________________________________________________________________________
G23421 en
206-09-16
Anti Lock Control
206-09-16
DIAGNOSIS AND TESTING (Continued)
ABS/TCS DIAGNOSTIC PROCEDURE
DIAGNOSTIC PROCEDURE - PART A
1. Refer to the completed ABS/TCS Concern Customer
Questionnaire for information relating to when, where and how
frequently the concern is noticed.
NOTE: I. The ABS and TCS lamps only indicate the presence of
hard faults. They will not illuminate if only a memory fault is
present.
II. The ECU can store no more than 3 DTC’s. The oldest DTC will
be erased if more than 3 are present.
III. If the ABS/TCS ECU wiring loom connector is not connected
properly, the ABS & TCS lamps will remain on while the ignition
is on.
IV. If a hard fault is present, the ABS and TCS lamps will remain
lit until the fault is corrected.
2. Turn the ignition OFF
3. Connect the WDS and turn the ignition ON
Does the WDS communicate with the ABS/TCS system?
Yes
Refer below
No
Refer to COMMUNICATIONS
FAULT, Pinpoint Test F.
Are there any DTC’s?
Yes
Record DTC and refer to DTC
table in this section for
diagnosis and repair
procedure.
No
Go to 4. Below
4. Turn the ignition OFF then disconnect the WDS
5. Confirm correct operation of the system.
6. Go to DIAGNOSTIC PROCEDURE - PART B.
DIAGNOSTIC PROCEDURE - PART B
1. Turn the ignition ON
Do the ABS & TCS come on and then go out after 3 seconds? Yes
Go to 2. Below
No
One or both lamps do not
come on or they stay on after 3
seconds
Check bulb and wiring for open
circuits and shorts to ground.
Be sure to wiggle the wiring
whilst testing. Repair as
required.
Go to DIAGNOSTIC
PROCEDURE - PART A, Item
2.
2. Ensure that the vehicle is safe to drive.
3. Drive the vehicle above 30 km/h for at least 80 seconds.
4. Select a safe, clear section of road and perform an ABS stop.
G23421 en
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст