Ford 2003 Mustang Workshop Manual page 679

Inspection and Verification
1. Verify the customer concern by operating the system.
2. Visually inspect for obvious signs of mechanical and electrical damage.
Visual Inspection Chart
Mechanical
Low brake fluid
Anti-lock brake sensor
Anti-lock brake sensor indicator
Base brake system
Wheel bearings
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,
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) Index to continue diagnostics.
7. If no DTCs related to the concern are retrieved, GO to
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 do a re-check of the system before the yellow
ABS warning indicator is turned OFF.
Electrical
Central junction box (CJB) Fuse:
5 (15A)
15 (10A)
29 (15A)
33 (15A)
35 (15A)
Battery junction box (BJB) Fuse:
ABS 1 (50A)
ABS 2 (20A)
Circuitry
Damaged or corroded connectors
ABS warning indicator
Loose grounds
Symptom Chart
Go To Pinpoint Test A
to continue diagnostics.
.