2003 FORD MUSTANG traction control

Anti-Lock Brake Control Module Active Command Index
Symptom Chart Valve
RF_TC_S RF Traction Control Switching
Valve OFF, ON
LR_TC_S LR Traction Control Switching
Valve OFF, ON
RR_TC_S RR Traction Control Switching
Valve OFF, ON
T/ALVAL Left Traction Control Valve
Output State OFF---, OFFO--, OFF
-B-, OFF--G, OFFO- G, OFF-
BG, OFFOBG, ON---, ONO--, ON -B-, ON--G, ONO-
G, ON- BG, ONOBG T/ARVAL Right Traction Control Valve
Output State OFF---, OFFO--, OFF
-B-, OFF--G, OFFO- G, OFF-
BG, OFFOBG, ON---, ONO--, ON -B-, ON--G, ONO-
G, ON- BG, ONOBG
Anti-Lock Brake Control Module Active Command Index Active Command Display Action
ABS OUTPUT CONTROL ABS POWER OFF, ON
DSBL TOG OFF, ON
LF INLET OFF, ON
LF OUTLET OFF, ON
RF INLET OFF, ON
RF OUTLET OFF, ON
LR INLET OFF, ON
LR OUTLET OFF, ON
RR INLET OFF, ON
RR OUTLET OFF, ON
TRACTION CONTROL PRIMARY AND SWITCHING VALVE CONTROL LF TC PRV OFF, ON
LF TC SWV OFF, ON
RF TC PRV OFF, ON
RF TC SWV OFF, ON
LR TC PRV OFF, ON
LR TC SWV OFF, ON
RR TC PRV OFF, ON
RR TC SWV OFF, ON
Symptom Chart
NOTE: Refer to the wiring diagrams for connector numbers stated in the pinpoint Klj . 5 ba
202003 Mustang Workshop Manual
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Pinpoint Tests
PINPOINT TEST A: NO COMMUNICATION WITH THE ANTI-
LOCK
BRAKE CONTROL MODULE test. Condition
Possible Sources Action
z No communication with the anti-
lock brake control module z
CJB Fuse 29
(15A).
z Circuitry.
z Anti- lock brake
control module. z
Go To Pinpoint Test A .
z Unable to enter self- test zAnti- lock brake
control module. z
Go To Pinpoint Test B .
z The yellow ABS warning indicator
does not self- check z
Circuitry.
z Anti- lock brake
control module.
z Instrument
cluster. z
Go To Pinpoint Test I .
z Spongy brake pedal with no
warning indicator z
Air in the brake
system.
z Base brake
system.
z Hydraulic control
unit (HCU). z
Go To Pinpoint Test J .
z REFER to
Section 206 -
00 .
z Poor vehicle tracking during anti-
lock function z
Air in the brake
system.
z Hydraulic control
unit (HCU).
z Base brake
system. z
Go To Pinpoint Test K .
z REFER to
Section 206 -
00 .
z The traction control is
inoperative— does not operate
correctly z
CJB 5 (15A).
z Circuitry.
z Traction control
switch.
z Instrument
cluster.
z Anti- lock brake
control module. z
Go To Pinpoint Test L .
z The traction control indicator is
inoperative— traction control
switch z
Circuitry.
z Traction control
switch.
z Instrument
cluster. z
Go To Pinpoint Test M .
Test Step Result / Action to
Take A1 CHECK CIRCUIT 601 (LB/PK) FOR AN OPEN
z
Key in OFF position.
z Disconnect: Anti- Lock Brake Control Module C141.
z Key in ON position.
z Measure the voltage between anti- lock brake control module C141
Pin 8, Circuit 601 (LB/PK), harness side and ground. Yes
GO to
A2 .
No
REPAIR the circuit. Klj . 6 ba
202003 Mustang Workshop Manual
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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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PINPOINT TEST M: THE TRACTION CONTROL INDICATOR IS
INOPERATIVE—
TRACTION CONTROL SWITCH L2 CHECK CIRCUIT 959 (GY) FOR AN OPEN
z
Key in OFF position.
z Disconnect: Traction Control Switch C239.
z Measure the resistance between instrument cluster C251 Pin 9,
Circuit 959 (GY), harness side and traction control switch C239
Pin 4, Circuit 959 (GY), harness side.
z Is the resistance less than 5 ohms? Yes
GO to
L3 .
No
REPAIR the circuit.
TEST the system for
normal operation. L3 CHECK CIRCUIT 489 (PK/BK) FOR AN OPEN
z
Key in ON position.
z Measure the voltage between traction control switch C239 Pin
3, Circuit 489 (PK/BK), harness side and ground.
z Is the voltage greater than 10 volts? Yes
INSTALL a new traction
control switch. TEST the
system for normal
operation.
No
REPAIR the circuit.
TEST the system for
normal operation.
Test Step Result / Action to
Take M1 CHECK CIRCUIT 960 (BK/LB)
z
Key in OFF position.
z Disconnect: Instrument Cluster C251.
z Disconnect: Traction Control Switch C239.
z Measure the resistance between instrument cluster C251 Pin 8,
Circuit 960 (BK/LB), harness side and traction control switch C239
Pin 5, Circuit 960 (BK/LB), harness side; and between instrument
cluster C251 Pin 8, Circuit 960 (BK/LB), harness side and ground. Yes
GO to
M2 .
No Klj . 18 ba
202003 Mustang Workshop Manual
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z
Is the resistance less than 5 ohms between the instrument
cluster and traction control switch and greater than 10,000
ohms between instrument cluster and ground? M2 CHECK CIRCUIT 489 (PK/BK) FOR AN OPEN
z
Key in ON position.
z Measure the voltage between traction control switch C239 Pin 3,
Circuit 489 (PK/BK), harness side and ground.
z Is the voltage greater than 10 volts? Yes
GO to
M3 .
No
REPAIR the circuit.
TEST the system
for normal
operation. M3 CHECK THE TRACTION CONTROL SWITCH INDICATOR
z
Key in OFF position.
z Connect: Traction Control Switch C239.
z Key in ON position.
z Momentarily connect a fused (10A) jumper wire between instrument
cluster C251 Pin 8, Circuit 960 (BK/LB), harness side and ground,
while observing the traction control switch indicator.
z Does the traction control switch indicator illuminate? Yes
INSTALL a new
instrument cluster;
REFER to
Section 413 - 01 . TEST the
system for normal
operation.
No
INSTALL a new
traction control
switch. TEST the
system for normal
operation. Klj . 19 ba
202003 Mustang Workshop Manual
17. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_4464/S3B~us~en~ ...

REMOVAL AND INSTALLATION
Sensor Indicator —
Rear
Removal 1. Remove the rear axle shaft bearing, refer to Section 205 - 02A or
Section 205 - 02B .
2. Using the special tool, remove the anti- lock brake sensor indicator from the axle shaft.
SECTION 206-
09B: Anti-Lock Control — Traction Control 2003 Mustang Workshop Manual Special Tool(s)
Pinion Bearing Cone Remover
205-
D002 (D79P- 4621A) Axle Bearing/Seal Plate
205-
090 (T75L-1165- B) Sensing Ring Replacer
206-
041 (T89P-20202- A) Klj . 1 ba
32003 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
32003 Mustang Workshop Manual
17. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_4464/S3B~us~en~ ...

REMOVAL AND INSTALLATION
Module
Removal
1. Remove the hydraulic control unit (HCU). Refer to Hydraulic Control Unit .
2. Remove the pump motor electrical connector.
3. Remove the anti- lock-brake control module screws.
4. Remove the anti- lock-brake control module from the HCU.
Installation
1. NOTE: The brake system must be bled after the HCU is installed or replaced. Refer to Section 206 - 00 .
To install, reverse the removal procedure.
SECTION 206-
09B: Anti-Lock Control — Traction Control 2003 Mustang Workshop Manual Klj . 1 ba
22003 Mustang Workshop Manual
17. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_4464/S3B~us~en~ ...