Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD2018MUSTANG GT PREMIUM, 2D COUPE, AUTOMATIC TRANSREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 103 (MODULE COMMUNICATIONS NETWORK)
2018 Ford Mustang GT Premium, 2D Coupe, Automatic Trans
Section 103 (Module Communications Network)
2018 Ford Mustang GT Premium, 2D Coupe, Automatic TransSECTION Section 103 (Module Communications Network)
WARNING: This page is about a different car, the 2018 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
- Description And Operation
- Diagnosis And Testing
- Communications Network
- DTC Chart
- Symptom Chart(s)
- Pinpoint Tests
- Pinpoint Test A : The Powertrain Control Module (Pcm) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test B : The Anti-Lock Brake System (Abs) Module Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test C : The Restraints Control Module (RCM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test D : The BECMB (Battery Energy Control Module B) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test E : The Occupant Classification System Module (OCSM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test F : The Steering Column Control Module (SCCM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test G : The Instrument Panel Cluster (IPC) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test H : The Body Control Module (BCM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test I : The Direct Current/Direct Current (Dc/Dc) Converter Control Module Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test J : The Front Controls Interface Module (FCIM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test K : The Audio Control Module (ACM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test L : The Front Control/Display Interface Module (FCDIM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test M : The Heated Steering Wheel Module (HSWM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test N : The Image Processing Module A (IPMA) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test O : The Image Processing Module B (IPMB) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test P : The Global Positioning System Module (GPSM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Q : The Accessory Protocol Interface Module (APIM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test R : The DSP (Audio Digital Signal Processing Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test S : The Radio Transceiver Module (RTM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test T : The Power Steering Control Module (PSCM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test U : The Driver Seat Module (DSM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test V : The SCME (Front Seat Climate Control Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test W : The Driver Door Module (DDM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test X : The Passenger Door Module (PDM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Y : The Side Obstacle Detection Control Module LH (Sod-L) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Z : The Side Obstacle Detection Control Module RH (Sod-R) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Aa : The Cruise Control Module (CCM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Ab : The Head Up Display (HUD) Module Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Ac : The Rear Gate Trunk Module (RGTM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Ad : The TRM (Trailer Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test AE : The Steering Effort Control Module (SECM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test AF : The SASM (Steering Angle Sensor Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Ag : The Gateway Module (GWM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Ah : No High Speed Controller Area Network 1 (HS-Can1) Communication, All Modules Are Not Responding
- Pinpoint Test Ai : No High Speed Controller Area Network 2 (HS-Can2) Communication, All Modules Are Not Responding
- Pinpoint Test AJ : No High Speed Controller Area Network 3 (HS-Can3) Communication, All Modules Are Not Responding
- Pinpoint Test AK : No Medium Speed Controller Area Network (Ms-Can) Communication, All Modules Are Not Responding
- Pinpoint Test Al : No Power To The Data Link Connector (DLC)
- Communications Network
- General Procedures
- Removal And Installation
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.