Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
C135-14 | Ground |
Is the resistance less than 3 ohms?
Yes | GO to A7 |
|---|---|
No | REPAIR the circuit. |
A7 VERIFY ALL WIRING CONNECTIONS
Ignition OFF. Disconnect ABS module C135 and related in-line connectors (if not previously disconnected). Disconnect C126. Using a good light source, inspect ABS module C135, C126 and related in-line connectors for the following:
corrosion - install a new connector or terminal and clean module pins damaged or bent pins - install new terminals or pins pushed-out pins - install new pins as necessary spread terminals - install new terminals as necessary
Are the connectors free of corrosion, damaged pins, bent pins, pushed-out pins and spread terminals?
Yes | GO to A8 |
|---|---|
No | REPAIR the affected connectors or terminals. Refer to Wiring Diagrams Cell 5 for schematic and connector information. |
A8 CHECK FOR CORRECT ABS (ANTI-LOCK BRAKE SYSTEM) MODULE OPERATION
Connect ABS module C135 and related in-line connectors. Make sure they seat and latch correctly. Connect C126. Make sure it seats and latches correctly. Connect the battery negative cable. REFER to: Battery Disconnect and Connect (414-01 Battery, Mounting and Cables, General Procedures). Operate the system and determine if the concern is still present.
Is the concern still present?
Yes | CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new ABS module. REFER to: Anti-Lock Brake System (ABS) Module (206-09 Anti-Lock Brake System (ABS) and Stability Control, Removal and Installation). |
|---|---|
No | The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues. |
Wheel Speed Sensor Erratic Signal Faults
Normal Operation and Fault Conditions
The wheel speed sensor and encoder (tone wheel) generate a square wave signal proportional to wheel speed and sends this information to the ABS module. The wheel bearing, encoder and wheel speed sensor must be
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.