2003 FORD MUSTANG wheel

PINPOINT TEST G: DTC C1222, ANTI-
LOCK BRAKE SENSOR
MISMATCH z
Are the resistances less than 5 ohms? (RR)
C1175
(LR) C141 Pin 22 C320 Pin 2 496 (OG)
C1175
(LR) C141 Pin 23 C320 Pin 1 499
(GY/BK) F5 CHECK THE ANTI-
LOCK BRAKE SENSOR z
Measure the resistance between suspect anti- lock
brake sensor pin 1 (component side) and suspect
anti- lock brake sensor pin 2 (component side).
z Is the resistance between 1280 and 1920 (front)
or 1830 and 2760 (rear) ohms? Yes
INSTALL a new anti-
lock brake
control module; REFER to Module .
REPEAT the self- test.
No
INSTALL a new anti- lock brake
sensor; REFER to Sensor — Front or
Sensor — Rear . CLEAR the DTCs.
REPEAT the self- test. 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 bent sensor ring 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 Yes Klj . 13 ba
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PINPOINT TEST J: SPONGY BRAKE PEDAL WITH NO WARNING
INDICATOR
PINPOINT TEST K: POOR VEHICLE TRACKING DURING ANTI-
LOCK
FUNCTION Test Step Result / Action to Take
I1 CHECK THE ABS WARNING INDICATOR CIRCUITRY
z
Key in OFF position.
z Disconnect: Anti- Lock Brake Control Module C141.
z Key in ON position.
z Depress and release the shorting bar connector
internal to the anti- lock brake control module C141,
harness side, while checking the yellow ABS warning
indicator in the instrument cluster.
z Does the yellow ABS indicator illuminate with the
shorting bar released and OFF with the shorting
bar depressed? Yes
INSTALL a new anti-
lock brake
control module; REFER to
Module . TEST the system for
normal operation.
No
REFER to Section 413 - 01 .
Test Step Result / Action to Take
J1 CHECK THE VEHICLE COMPONENTS
z
Check the brake pedal and power
booster/brake master cylinder for correct
attachment.
z Are the components OK? Yes
GO to
J2 .
No
REPAIR as necessary. TEST the system for
normal operation. J2 BLEED THE BRAKE SYSTEM
z
Bleed the brake system; REFER to Section 206 - 00 .
z Check for spongy brake pedal.
z Is the brake pedal spongy? Yes
INSTALL a new HCU; REFER to
Hydraulic Control Unit . TEST the system for normal
operation.
No
The brake system is OK. TEST the system
for normal operation. Test Step Result / Action to Take
K1 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
K2 .
No
The brake system is OK. TEST the
system for normal operation. K2 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 depress runs the pump motor for two
seconds. Yes
INSTALL a new HCU; REFER to
Hydraulic Control Unit
. TEST the system
for normal operation.
No Klj . 15 ba
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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? GO to
K3 .
K3 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: Trigger must be depressed twice.
Each depress runs the pump motor for two
seconds.
z Have an assistant rotate the LF wheel
immediately after depressing trigger.
z Does the LF wheel rotate? Yes
GO to
K4 .
No
GO to K10 .
K4 CHECK THE RF ABS VALVE OPERATION
z
NOTE: Trigger must be depressed twice.
Each depress runs 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 K5 .
K5 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
K6 .
No
GO to K10 .
K6 CHECK THE LR ABS VALVE OPERATION
z
NOTE: Trigger must be depressed twice.
Each depress runs 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 LR
wheel while the pump motor is running.
z Does the LR wheel rotate? Yes
INSTALL a new HCU; REFER to
Hydraulic Control Unit
. TEST the system
for normal operation.
No
GO to K7 .
K7 CHECK THE LR ABS VALVE RELEASE
z
Apply moderate brake pedal effort.
z Trigger the anti- lock brake control module
active command LR INLET and LR OUTLET.
z NOTE: The scan tool will energize the valves
for only two seconds per trigger press.
z Have an assistant rotate the LR wheel
immediately after depressing trigger.
z Does the LR wheel rotate? Yes
GO to
K8 .
No
GO to K10 . Klj . 16 ba
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PINPOINT TEST L: THE TRACTION CONTROL IS INOPERATIVE—
DOES NOT OPERATE CORRECTLY K8 CHECK THE RR ABS VALVE OPERATION
z
NOTE: Trigger must be depressed twice.
Each depress runs 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 RR
wheel while the pump motor is running.
z Does the RR wheel rotate? Yes
INSTALL a new HCU; REFER to
Hydraulic Control Unit
. TEST the system
for normal operation.
No
GO to K9 .
K9 CHECK THE RR 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 RR wheel
immediately after depressing trigger.
z Does the RR wheel rotate? Yes
The ABS system is operating correctly.
No
GO to
K10 .
K10 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. Test Step Result / Action to Take
L1 CHECK THE TRACTION CONTROL SWITCH CIRCUITRY
z
Key in OFF position.
z Disconnect: Instrument Cluster C251.
z Key in ON position.
z Measure the voltage between instrument cluster C251 Pin 9,
Circuit 959 (GY), harness side and ground, while depressing
and releasing the traction control switch.
z Is the voltage greater than 10 volts with the traction control
switch depressed and zero volts with the traction control
switch released? Yes
INSTALL a new
instrument cluster,
REFER to
Section 413 -
01 . TEST the system
for normal operation.
No
GO to L2 . Klj . 17 ba
202003 Mustang Workshop Manual
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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-
09B: Anti-Lock Control — Traction Control 2003 Mustang Workshop Manual Klj . 1 ba
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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-
09B: Anti-Lock Control — Traction Control 2003 Mustang Workshop Manual Klj . 1 ba
32003 Mustang Workshop Manual
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For information on the power steering oil reservoir (3A697), refer to
Section 211 - 02 .
For information on the steering wheel and column assembly, refer to Section 211 - 04 .
For information on the power steering hoses, refer to Section 211 - 02 .
For information on the front wheel spindles, refer to Section 204 - 01 .
For information on the power steering fluid cooler, refer to Section 211 - 02 .
For information on the power steering pump, refer to Section 211 - 02 .
For information on the steering gear, refer to Section 211 - 02 . Item Part Number Description
1 3A713 Power steering hose
2 3R700 Power steering pump reservoir
3 3A714 Power steering hose
4 2B559 Hydro-boost assy
5 3E525 Power steering hose
6 3504 Steering gear
7 3A130 Tie-
rod end 8 3A713 Power steering hose
9 3D746 Power steering fluid cooler
10 3A674 Power steering pump Klj . 2 ba
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DIAGNOSIS AND TESTING
Steering System
Inspection and Verification
CAUTION: Do not hold the steering wheel (3600) at the stops for an extended amount of
time. Damage to the power steering pump (3A674) will result. NOTE: Make the following preliminary checks before repairing the steering system:
SECTION 211-
00: Steering System — General Information 2003 Mustang Workshop Manual Special Tool(s)
Dial Thermometer 0-
220°F
023- R0007 or Equivalent Hand Held Automotive Meter
105-
R0053 or Equivalent Power Steering Analyzer
211-
F001 (014- 00207) or
Equivalent Spring Scale
211-
034 (T74P-3504- Y) Tach Adapter
418-
F102 (007- 00061) or
Equivalent Tie-
Rod End Remover Tool
211- 001 (TOOL- 3290-D) or
Equivalent Klj . 1 ba
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