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 MANUALSFORD2021BRONCO BASE, 2D UTILITY, 2.3L ENG VIN H, PART TIME T/CASE CONTROL, STANDARD TRANSREPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTCOMMUNICATION DEVICESCONTROLLER AREA NETWORK (CAN) MODULE COMMUNICATIONS NETWORK
2021 Ford Bronco Base, 2D Utility, 2.3L Eng VIN H, Part Time T/Case Control, Standard Trans
Controller Area Network (Can) Module Communications Network
2021 Ford Bronco Base, 2D Utility, 2.3L Eng VIN H, Part Time T/Case Control, Standard TransSECTION Controller Area Network (Can) Module Communications Network
- Description And Operation
- Controller Area Network (CAN) Module Communications Network - System Operation and Component Description
- Overview
- System Diagram
- Network Termination
- Gateway Module
- Flexible Data Rate Controller Area Network (FD-CAN)
- High Speed Controller Area Network 1, 2, 3 and 4 (HS-CAN1, HS-CAN2, HS-CAN3 and HS-CAN4)
- Medium Speed Controller Area Network (MS-CAN)
- Controller Area Network (CAN) Fault Tolerance
- Controller Area Network (CAN) Multiplex Messages
- Controller Area Network (CAN) Module Communications Network - System Operation and Component Description
- Diagnosis And Testing
- Controller Area Network (CAN) Module Communications Network
- Diagnostic Trouble Code (DTC) Chart
- Symptom Chart(s)
- Pinpoint Tests
- Pinpoint Test A: No Power To The Remote DLC (Data Link Connector)
- Pinpoint Test B: No FD-Can (Flexible Data Rate Controller Area Network) Communication, All Modules Are Not Responding
- Pinpoint Test C: No HS-Can1 (High-Speed Controller Area Network 1) Communication, All Modules Are Not Responding
- Pinpoint Test D: No HS-Can2 (High-Speed Controller Area Network 2) Communication, All Modules Are Not Responding
- Pinpoint Test E: No HS-Can3 (High-Speed Controller Area Network 3) Communication, All Modules Are Not Responding
- Pinpoint Test F: No Ms-Can (Medium Speed-Controller Area Network) Communication, All Modules Are Not Responding
- Pinpoint Test G: All Networks Do Not Respond To The Diagnostic Scan Tool
- Pinpoint Test H: The Abs (Anti-Lock Brake System) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test I: The ACM (Audio Front Control Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test J: The APIM (Sync Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test K: The ATCM (All Terrain Control Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test L: The AWD (All-Wheel Drive) Module Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test M: The BCM (Body Control Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test N: The BCMC (Body Control Module C) [ BJB (Battery Junction Box) ] Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test O: The CHCM (Chassis Control Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test P: The DDM (Driver Door Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Q: The DSP (Audio Digital Signal Processing Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test R: The HVAC (Heating, Ventilation And Air Conditioning) Module Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test S: The IPC (Instrument Panel Cluster) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test T: The IPMA (Image Processing Module A) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test U: The IPMB (Image Processing Module B) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test V: The OCS (Occupant Classification System) Module Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test W: The PAM (Parking Assist Control Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test X: The Pcm (Powertrain Control Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Y: The PDM (Passenger Door Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Z: The PSCM (Power Steering Control Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Aa: The RCM (Restraints Control Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Ab: The RTM (Radio Transceiver Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Ac: The SCCM (Steering Column Control Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Ad: The Sima (Switch Input Module A) (Driveline Chassis Switch [DLCS]) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test AE: The SODL (Side Obstacle Detection Control Module LH) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test AF: The SODR (Side Obstacle Detection Control Module RH) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Ag: The TCU (TELEMATIC Control Unit Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Ah: The TRM (Trailer Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Ai: The WACM (Wireless Accessory Charging Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test AJ: U0001:09
- Pinpoint Test AK: U1A01:00
- Pinpoint Test Al: U2100:00 Or U2200:00
- Pinpoint Test Am: U3000:04, U3000:43 Or U3000:49
- Pinpoint Test An: U3000:57
- Pinpoint Test AO: U3003:16
- Pinpoint Test AP: U3003:17
- Controller Area Network (CAN) Module Communications Network
- Removal And Installation
RENDER: 1.0x
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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.