wheel FORD MUSTANG 2003 Workshop Manual

DIAGNOSIS AND TESTING
Anti-
Lock Control
Refer to Wiring Diagrams Cell 42 , Anti-
Lock Brake for schematic and connector information.
Principles of Operation
The anti- lock brake control module receives wheel speed readings from each anti- lock brake sensor
and processes this information to determine if an ABS event is necessary. The anti- lock brake sensor
electrically senses each tooth of the anti- lock brake sensor indicators as it passes through the anti- lock
brake sensor's magnetic field.
The anti- lock brake control module continuously monitors and compares the rotational speed of each
wheel, and when it detects an impending wheel lock, modulates hydraulic brake pressure to the
appropriate brake caliper. This is accomplished by the anti- lock brake control module triggering the
hydraulic control unit (HCU) to open and close the appropriate solenoid valves. Once the affected
wheel returns to normal speed, the anti- lock brake control module returns the solenoid valves to their
normal position, and normal (base) braking resumes.
The anti- lock brake control module is self- monitoring. When the ignition switch is turned to the RUN
position, the anti- lock brake control module will do a preliminary electrical check, and at approximately
12 km/h (8 mph) the pump motor is turned on for approximately one half- second. Any malfunction of
the ABS will cause the ABS to shut off and the yellow ABS warning indicator to illuminate, however,
normal power assisted braking remains.
The ABS control module has the ability to store multiple DTCs in memory.
Inspection and Verification
1. Verify the customer concern by operating the system.
2. Visually inspect for obvious signs of mechanical and electrical damage.
SECTION 206-
09A: Anti-Lock Control — Rear 2003 Mustang Workshop Manual Special Tool(s)
Worldwide Diagnostic System
(WDS)
418-
F224,
New Generation STAR (NGS)
Tester
418- F052, or equivalent scan
tool 73 Digital Multimeter or
equivalent
105-
R0051 Klj . 1 ba
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3. If the concern remains after the inspection, connect the scan tool to the data link connector
(DLC) located beneath the instrument panel and select the vehicle to be tested from the scan
tool menu. If the scan tool does not communicate with the vehicle: 1. Check that the program card is correctly installed.
2. Check the connections to the vehicle.
3. Check the ignition switch position.
4. If the scan tool still does not communicate with the vehicle, refer to the scan tool Manual.
5. Carry out the DATA LINK DIAGNOSTIC TEST. If the scan tool responds with: 1. CKT914, CKT915 or CKT70 = ALL ECUS NO RESP/NOT EQUIP, refer to Section 418-00.
2. NO RESP/NOT EQUIP for the anti- lock brake control module, Go To Pinpoint Test A .
3. SYSTEM PASSED, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs and carry out self- test diagnostics for the anti-lock brake
control module.
6. If the DTCs retrieved are related to the concern, go to the Anti- Lock Brake Control Module
Diagnostic Trouble Code (DTC) Reference Chart to continue diagnostics.
7. If no DTCs related to the concern are retrieved, GO to Symptom Chart to continue diagnostics.
Anti-Lock Brake Control Module Diagnostic Trouble Code (DTC) Index
NOTE: If a wheel speed signal fault or a pump motor fault is detected, the yellow ABS warning
indicator cannot be reset with the key OFF and key ON method. The vehicle must be driven over 12
km/h (8 mph) for the anti- lock brake control module to carry out a re- check of the system before the
yellow ABS warning indicator is turned OFF. Visual Inspection Chart Mechanical Electrical
z
Low brake fluid
z Anti- lock brake sensor
z Anti- lock brake sensor indicator
z Base brake system z
Central junction box (CJB)Fuse:
„15 (10A)
„ 29 (15A)
„ 33 (15A)
„ 35 (15A)
z Battery junction box (BJB) Fuse:
„ABS 1 (50A)
„ ABS 2 (20A)
z Circuitry
z Damaged or corroded connectors
z Yellow ABS warning indicator
z Loose grounds
Anti-Lock Brake Control Module Diagnostic Trouble Code (DTC) Index DTC Description Source Action
B1318 Battery Voltage Low ABS Go To Pinpoint Test C .
B1342 ECU Is Defective ABS INSTALL a new anti-
lock brake control module;
REFER to Module . REPEAT the self-
test. B1484 Brake Pedal Input Open Circuit ABS Go To Pinpoint Test D . Klj . 2 ba
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Anti-Lock Brake Control Module Parameter Identification (PID) Index B1596 Repair Continuous Codes ABS REPAIR the DTCs retrieved.
C1095 ABS Hydraulic Pump Motor
Circuit Failure ABS Go To Pinpoint Test E .
C1145 RF Anti-
Lock Brake Sensor
Input Circuit Failure ABS Go To Pinpoint Test F .
C1155 LF Anti-
Lock Brake Sensor
Input Circuit Failure ABS Go To Pinpoint Test F .
C1165 RR Anti-
Lock Brake Sensor
Input Circuit Failure ABS Go To Pinpoint Test F .
C1175 LR Anti-
Lock Brake Sensor
Input Circuit Failure ABS Go To Pinpoint Test F .
C1222 Anti-
Lock Brake Sensor
Mismatch ABS Go To Pinpoint Test G .
C1233 LF Anti-
Lock Brake Sensor
Input Signal Missing ABS Go To Pinpoint Test H .
C1234 RF Anti-
Lock Brake Sensor
Input Signal Missing ABS Go To Pinpoint Test H .
C1235 RR Anti-
Lock Brake Sensor
Input Signal Missing ABS Go To Pinpoint Test H .
C1236 LR Anti-
Lock Brake Sensor
Input Signal Missing ABS Go To Pinpoint Test H .
C1266 ABS Valve Power Relay
Circuit Failure ABS Go To Pinpoint Test I .
Anti-Lock Brake Control Module Parameter Identification (PID) Index PID Description Expected Value
CCNTABS Number of Continuous DTCS in
the Anti- Lock Brake Control
Module one count per bit
BOO_ABS Brake Switch Input OFF, ON
PMP_MTR ABS Pump Motor OFF---, OFFO--, OFF
-B-, OFF--G, OFFO- G, OFF-
BG, OFFOBG, ON---, ONO--, ON -B-, ON--G, ONO-
G, ON- BG, ONOBG VLV_CTR ABS Valve Control Relay OFF---, OFFO--, OFF
-B-, OFF--G, OFFO- G, OFF-
BG, OFFOBG, ON---, ONO--, ON -B-, ON--G, ONO-
G, ON- BG, ONOBG LF_WSPD LF Wheel Speed 0-
255 MPH RF_WSPD RF Wheel Speed 0-
255 MPH LR_WSPD LR Wheel Speed 0-
255 MPH RR_WSPD RR Wheel Speed 0-
255 MPH ABSLF_I LF ABS Inlet Valve OFF---, OFFO--, OFF
-B-, OFF--G, OFFO- G, OFF-
BG, OFFOBG, ON---, ONO--, ON -B-, ON--G, ONO-
G, ON- BG, ONOBG ABSLF_O LF ABS Outlet Valve OFF---, OFFO--, OFF
-B-, OFF--G, OFFO- G, OFF-
BG, OFFOBG, ON---, ONO--, ON -B-, ON--G, ONO-
G, ON- BG, ONOBG Klj . 3 ba
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PINPOINT TEST H: DTC C1233 (LF), C1234 (RF), C1235 (RR), C1236
(LR), ANTI-
LOCK BRAKE SENSOR INPUT SIGNAL MISSING Test Step Result / Action to Take
G1 CHECK THE VEHICLE
COMPONENTS z
Check for correct wheel and tire
size, front- to-rear and side- to-
side.
z Check for excessive bearing
end play.
z Check the anti- lock brake
sensor indicator for a
deformation or missing teeth.
z Are the conditions OK? Yes
GO to
G2 .
No
REPAIR as necessary. CLEAR the DTCs. REPEAT the
self- test. G2 TEST DRIVE THE VEHICLE
z
Enter the following diagnostic
mode on the diagnostic tool:
CLEAR the DTCs.
z Key in OFF position.
z Key in ON position.
z Test drive the vehicle over 24
kph (15 mph).
z Enter the following diagnostic
mode on the diagnostic tool:
Retrieve DTCs.
z Is DTC C1222 retrieved? Yes
INSTALL a new anti-
lock brake control module; REFER
to Module . REPEAT the self-
test.
No
If another DTC is retrieved, GO to the Anti- Lock Brake
Control Module Diagnostic Trouble Code (DTC) index.
If no DTCs are retrieved, the system is OK. Test Step Result / Action to Take
H1 CHECK THE SUSPECT ANTI-
LOCK BRAKE
SENSOR z
Check the suspect anti- lock brake sensor
mounting.
z Check the suspect anti- lock brake sensor for
excessive dirt build up, obstructions, and
damage.
z Is the suspect anti- lock brake sensor and
mounting OK? Yes
GO to
H2 .
No
REPAIR as necessary. CLEAR the
DTCs. REPEAT the self-test. H2 CHECK THE SUSPECT ANTI-
LOCK BRAKE
SENSOR INDICATOR z
Check the suspect anti- lock brake sensor
indicator for corrosion, nicks, bridged teeth,
damaged teeth, correct mounting, and alignment
with the anti- lock brake sensor.
z Check the air gap and bearing end play.
z Is the suspect anti- lock brake sensor
indicator OK? Yes
GO to
H3 .
No
INSTALL a new anti- lock brake sensor
indicator; REFER to Sensor — Front or
Sensor — Rear . CLEAR the DTCs.
REPEAT the self- test. H3 CHECK THE ANTI-
LOCK BRAKE SENSOR
OUTPUT z
Key in ON position.
z Enter the following diagnostic mode on the
diagnostic tool: CLEAR the DTCs..
z Key in OFF position.
z Key in ON position. Yes
INSTALL a new anti-
lock brake control
module; REFER to Module . REPEAT
the self- test. Klj . 12 ba
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FUNCTION
Test Step Result / Action to Take
L1 BLEED THE BRAKE SYSTEM
z
Bleed the brake system. Refer to Section 206 - 00 .
z Check for vehicle tracking poorly.
z Does the vehicle track poorly? Yes
GO to
L2 .
No
The brake system is OK. TEST the
system for normal operation. L2 CHECK THE LF ABS VALVE OPERATION
z
Lift the vehicle and rotate all the wheels to
make sure they rotate freely (the vehicle must
be in neutral).
z NOTE: Trigger must be depressed twice.
Each press will run the pump motor for two
seconds.
z Trigger the anti- lock brake control module
active command PMP MOTOR ON for four
seconds.
z Apply moderate brake pedal effort.
z Have an assistant attempt to rotate the LF
wheel while the pump motor is running.
z Does the LF wheel rotate? Yes
INSTALL a new HCU; REFER to
Hydraulic Control Unit
. TEST the system
for normal operation.
No
GO to L3 .
L3 CHECK THE LF ABS VALVE RELEASE
z
Apply moderate brake pedal effort.
z Trigger the anti- lock brake control module
active command LF INLET and LF OUTLET.
z NOTE: The scan tool will energize the valves
for only two seconds per trigger press.
z Have an assistant rotate the LF wheel
immediately after depressing trigger.
z Does the LF wheel rotate? Yes
GO to
L4 .
No
GO to L8 .
L4 CHECK THE RF ABS VALVE OPERATION
z
NOTE: Trigger must be depressed twice.
Each press will run the pump motor for two
seconds.
z Trigger the anti- lock brake control module
active command PMP MOTOR ON for four
seconds.
z Apply moderate brake pedal effort.
z Have an assistant attempt to rotate the RF
wheel while the pump motor is running.
z Does the RF wheel rotate? Yes
INSTALL a new HCU; REFER to
Hydraulic Control Unit
. TEST the system
for normal operation.
No
GO to L5 .
L5 CHECK THE RF ABS VALVE RELEASE
z
Apply moderate brake pedal effort.
z Trigger the anti- lock brake control module
active command RF INLET and RF OUTLET.
z NOTE: The scan tool will energize the valves
for only two seconds per trigger press.
z Have an assistant rotate the RF wheel
immediately after depressing trigger.
z Does the RF wheel rotate? Yes
GO to
L6 .
No
GO to L8 .
L6 CHECK THE REAR ABS VALVE OPERATION
z
NOTE: Trigger must be depressed
twice.Each press will run the pump motor for Yes
INSTALL a new HCU; REFER to Klj . 15 ba
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two seconds.
z Trigger the anti- lock brake control module
active command PMP MOTOR ON for four
seconds.
z Apply moderate brake pedal effort.
z Have an assistant attempt to rotate the LR
and RR wheels while the pump motor is
running.
z Does the LR or RR wheel rotate? Hydraulic Control Unit . TEST the system
for normal operation.
No
GO to L7 .
L7 CHECK THE REAR ABS VALVE RELEASE
z
Apply moderate brake pedal effort.
z Trigger the anti- lock brake control module
active command R INLET and R OUTLET.
z NOTE: The scan tool will energize the valves
for only two seconds per trigger press.
z Have an assistant rotate the LR and RR
wheels immediately after depressing trigger.
z Does the LR or RR wheel rotate? Yes
The ABS system is operating correctly.
No
GO to
L8 .
L8 CHECK FOR DTCS
z
Carry out the anti- lock brake control module
self- test.
z Are any DTCs retrieved? Yes
GO to the Anti-
Lock Brake Control Module
Diagnostic Trouble Code (DTC) Index.
No
INSTALL a new HCU; REFER to
Hydraulic Control Unit . TEST the system
for normal operation. Klj . 16 ba
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REMOVAL AND INSTALLATION
Hydraulic Control Unit
Removal
1. Disconnect the battery ground cable(14301).
2. Disconnect the anti- lock-brake control module electrical connector.
3. NOTE: The 4 wheel anti- lock brake system (4WABS) with traction control is shown , the
4WABS without traction control system is similar with one less hydraulic line.
NOTE: Plug brake lines to prevent any brake fluid loss.
Disconnect the brake lines from the hydraulic control unit (HCU).
4. Remove the HCU bracket nuts to HCU.
5. Remove the HCU.
SECTION 206-
09A: Anti-Lock Control — Rear 2003 Mustang Workshop Manual Klj . 1 ba
32003 Mustang Workshop Manual
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REMOVAL AND INSTALLATION
Sensor —
Front
Removal 1. Remove the wheel and tire assembly. For additional information, refer to Section 204 - 04 .
2. Remove the inner fender splash shield. 1. Remove the inner fender splash shield push pins.
2. Remove the inner fender splash shield screw.
3. Remove the inner fender splash shield.
3. Remove the front anti- lock brake sensor electrical connector.
4. Remove the front anti- lock brake sensor harness from the anti- lock brake sensor harness clips.
5. Remove the front anti- lock brake sensor.
1. Remove the front anti- lock brake sensor bolt.
2. Remove the anti- lock brake sensor harness from the harness clips.
3. Remove the front anti- lock brake sensor.
SECTION 206-
09A: Anti-Lock Control — Rear 2003 Mustang Workshop Manual Klj . 1 ba
32003 Mustang Workshop Manual
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DESCRIPTION AND OPERATION
Anti-
Lock Control — Traction Control
The four wheel anti- lock brake system (4WABS) with traction control consists of the following
components:
zanti- lock brake control module (2C346)
z front anti- lock brake sensor (2C204)/(2C205)
z front anti- lock brake sensor indicator (2C182)
z hydraulic control unit (2C286)
z powertrain control module (12A650)
z rear anti- lock brake sensor (2C190)/(2C216)
z rear anti- lock brake sensor indicator (2C189)
z traction control switch
z yellow anti- lock brake system (ABS) warning indicator
SECTION 206-
09B: Anti-Lock Control — Traction Control 2003 Mustang Workshop Manual Klj . 1 ba
12003 Mustang Workshop Manual
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DIAGNOSIS AND TESTING
Anti-
Lock Control — Traction Control
Refer to Wiring Diagrams Cell 42 , Anti-
Lock Brake System for schematic and connector information.
Principles of Operation
The anti- lock-brake control module receives wheel speed readings from each anti- lock brake sensor
and processes this information to determine if an ABS event is necessary. The anti- lock brake sensor
electrically senses each tooth of the anti- lock brake sensor indicators as it passes through the anti- lock
brake sensor's magnetic field.
The anti- lock brake control module continuously monitors and compares the rotational speed of each
wheel and, when it detects an impending wheel lock, modulates brake pressure to the appropriate
brake caliper. This is accomplished by triggering the hydraulic control unit (HCU) to open and close the
appropriate solenoid valves. Once the affected wheel returns to normal speed, the anti- lock brake
control module returns the solenoid valves to their normal position, and normal (base) braking
resumes.
The anti- lock brake control module is self- monitoring. When the ignition switch is turned to the RUN
position, the anti- lock brake control module will do a preliminary electrical check, and at approximately
12 km/h (8 mph) the pump motor is turned on for approximately one half- second. Also during all
phases of operation the anti- lock brake control module (after the vehicle is in motion) checks for
correct operation of the anti- lock brake sensors. Any malfunction of the ABS will cause the ABS to shut
off and ABS warning indicator to illuminate; normal power assisted braking, however, remains.
The ABS control module has the ability to store multiple DTCs in memory.
The traction control system controls wheelspin by modulating the engine torque by communicating to
the powertrain control module (PCM) and by applying, then releasing, the appropriate brake to restore
traction when one or both drive wheels lose traction and begin to spin during acceleration.
The traction control system can be disabled by depressing the traction control switch. The traction
control system will reset and return to normal traction assist when the ignition switch is cycled or when
the traction control switch is depressed again. SECTION 206-
09B: Anti-Lock Control — Traction Control 2003 Mustang Workshop Manual Special Tool(s)
Worldwide Diagnostic System
(WDS)
418-
F224,
New Generation STAR (NGS)
Tester
418- F052, or equivalent scan
tool 73 Digital Multimeter or
equivalent
105-
R0051 Klj . 1 ba
202003 Mustang Workshop Manual
17. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_4464/S3B~us~en~ ...