Overview
Multiplexing is a method of sending 2 or more signals simultaneously over a single circuit. Multiplexing allows 2 or more electronic modules (nodes) to communicate over a twisted wire pair [data (+) and data (-)] network. The information or messages that can be communicated on these wires consists of commands, status or data. The advantage of using multiplexing is to reduce the weight of the vehicle by reducing the number of redundant components and electrical wiring.
Note. The Infotainment Controller Area Network (I-CAN) goes to the DLC, but the Infotainment Controller Area Network (I-CAN) modules communicate with the scan tool over the Medium Speed Controller Area Network (MS-CAN). The IPC is used as a gateway module for the messages to transfer between the scan tool and the modules on the Infotainment Controller Area Network (I-CAN).
The vehicle has 3 module communication networks connected to the DLC, located under the instrument panel. The communication networks are
- High Speed Controller Area Network (HS-CAN)
- Medium Speed Controller Area Network (MS-CAN)
- Infotainment Controller Area Network (I-CAN)
Scheme 1
| Module Name | Network Type |
|---|---|
| APIM (if equipped) | HS-CAN |
| MS-CAN (Sony® Sound Only) | |
| I-CAN | |
| ABS module | HS-CAN |
| ACM | I-CAN |
| DSP (if equipped) | I-CAN |
| BCM | HS-CAN |
| MS-CAN | |
| DDM (if equipped) | MS-CAN |
| FCIM (if equipped) | I-CAN |
| FCDIM | I-CAN |
| GPSM (if equipped) | MS-CAN |
| HVAC module | MS-CAN |
| IPC | MS-CAN |
| I-CAN | |
| Information Center Module (ICM) (if equipped) | HS-CAN |
| Image Processing Module - B (IPM-B) (if equipped) | MS-CAN |
| OCSM | HS-CAN |
| Parking Aid Module (PAM) (if equipped) | HS-CAN |
| PSCM | HS-CAN |
| PCM | HS-CAN |
| PDM (if equipped) | MS-CAN |
| RFA module (if equipped) | MS-CAN |
| RCM | HS-CAN |
| SASM | HS-CAN |
| TCM (if equipped) | HS-CAN |
MODULE NETWORK CHART
Diagnostic Overview
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: DIAGNOSTIC METHODS .
Refer to MODULE COMMUNICATION NETWORK for schematic and connector information.
Refer to ELECTRONIC ENGINE CONTROLS for schematic and connector information.
Normal Operation and Fault Conditions
The PCM communicates with the scan tool through the High Speed Controller Area Network (HS-CAN). An IDS session cannot be established if the PCM communication fails when attempting to identify the vehicle.
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: DIAGNOSTIC METHODS .
Refer to MODULE COMMUNICATION NETWORK for schematic and connector information.
Refer to VEHICLE DYNAMIC SYSTEMS for schematic and connector information.
The ABS module communicates with the scan tool through the High Speed Controller Area Network (HS-CAN).
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: DIAGNOSTIC METHODS .
Refer to MODULE COMMUNICATION NETWORK for schematic and connector information.
Refer to SUPPLEMENTAL RESTRAINT SYSTEM for schematic and connector information.
The RCM communicates with the scan tool through the High Speed Controller Area Network (HS-CAN).
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: DIAGNOSTIC METHODS .
Refer to MODULE COMMUNICATION NETWORK for schematic and connector information.
Refer to AUDIO SYSTEM_NAVIGATION for schematic and connector information.
The FCDIM communicates with the scan tool through the Medium Speed Controller Area Network (MS-CAN). The IPC is used as the gateway module.
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: DIAGNOSTIC METHODS .
Refer to MODULE COMMUNICATION NETWORK for schematic and connector information.
Refer to SUPPLEMENTAL RESTRAINT SYSTEM for schematic and connector information.
The OCSM communicates with the scan tool through the High Speed Controller Area Network (HS-CAN).
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: DIAGNOSTIC METHODS .
Refer to MODULE COMMUNICATION NETWORK for schematic and connector information.
Refer to CRUISE CONTROL for schematic and connector information.
The SASM communicates with the scan tool through the High Speed Controller Area Network (HS-CAN).
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: DIAGNOSTIC METHODS .
Refer to MODULE COMMUNICATION NETWORK for schematic and connector information.
Refer to INSTRUMENT CLUSTER for schematic and connector information.
The IPC communicates with the scan tool through the Medium Speed Controller Area Network (MS-CAN) and communicates with the other modules on the Infotainment Controller Area Network (I-CAN).
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: DIAGNOSTIC METHODS .
Refer to MODULE COMMUNICATION NETWORK for schematic and connector information.
Refer to INSTRUMENT CLUSTER for schematic and connector information.
The Information Center Module (ICM) communicates with the scan tool through the High Speed Controller Area Network (HS-CAN).
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: DIAGNOSTIC METHODS .
Refer to POWER DISTRIBUTION for schematic and connector information.
Refer to MODULE COMMUNICATION NETWORK for schematic and connector information.
The BCM communicates with the scan tool through the High Speed Controller Area Network (HS-CAN) and communicates with the other modules through the Medium Speed Controller Area Network (MS-CAN).
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: DIAGNOSTIC METHODS .
Refer to MODULE COMMUNICATION NETWORK for schematic and connector information.
Refer to AUTOMATIC CLIMATE CONTROL SYSTEM for schematic and connector information.
The HVAC module communicates with the scan tool through the Medium Speed Controller Area Network (MS-CAN).
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: DIAGNOSTIC METHODS .
Refer to MODULE COMMUNICATION NETWORK for schematic and connector information.
Refer to AUDIO SYSTEM_NAVIGATION for schematic and connector information.
The ACM communicates with the scan tool through the Medium Speed Controller Area Network (MS-CAN). The IPC is used as the gateway module.
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: DIAGNOSTIC METHODS .
Refer to POWER DISTRIBUTION for schematic and connector information.
Refer to AUDIO SYSTEM_NAVIGATION for schematic and connector information.
The DSP communicates with the scan tool through the Medium Speed Controller Area Network (MS-CAN). The IPC is used as the gateway module.
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: DIAGNOSTIC METHODS .
Refer to MODULE COMMUNICATION NETWORK for schematic and connector information.
Refer to POWER WINDOWS for schematic and connector information.
The DDM communicates with the scan tool through the Medium Speed Controller Area Network (MS-CAN).
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: DIAGNOSTIC METHODS .
Refer to MODULE COMMUNICATION NETWORK for schematic and connector information.
Refer to POWER WINDOWS for schematic and connector information.
The PDM communicates with the scan tool through the Medium Speed Controller Area Network (MS-CAN).
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: DIAGNOSTIC METHODS .
Refer to MODULE COMMUNICATION NETWORK for schematic and connector information.
Refer to PARKING AID for schematic and connector information.
The Image Processing Module - B (IPM-B) communicates with the scan tool through the Medium Speed Controller Area Network (MS-CAN).
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: DIAGNOSTIC METHODS .
Refer to MODULE COMMUNICATION NETWORK for schematic and connector information.
Refer to AUDIO SYSTEM_NAVIGATION for schematic and connector information.
The GPSM communicates with the scan tool through the Medium Speed Controller Area Network (MS-CAN).
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: DIAGNOSTIC METHODS .
Refer to MODULE COMMUNICATION NETWORK for schematic and connector information.
Refer to PARKING AID for schematic and connector information.
The Parking Aid Module (PAM) communicates with the scan tool through the High Speed Controller Area Network (HS-CAN).
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: DIAGNOSTIC METHODS .
Refer to MODULE COMMUNICATION NETWORK for schematic and connector information.
Refer to AUDIO SYSTEM_NAVIGATION for schematic and connector information.
The APIM communicates with the scan tool through the High Speed Controller Area Network (HS-CAN) and communicates with the other modules through the Medium Speed Controller Area Network (MS-CAN) and Infotainment Controller Area Network (I-CAN).
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: DIAGNOSTIC METHODS .
Refer to MODULE COMMUNICATION NETWORK for schematic and connector information.
Refer to AUDIO SYSTEM_NAVIGATION for schematic and connector information.
The FCIM communicates with the scan tool through the Medium Speed Controller Area Network (MS-CAN). The IPC is used as the gateway module.
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: DIAGNOSTIC METHODS .
Refer to MODULE COMMUNICATION NETWORK for schematic and connector information.
Refer to REMOTE KEYLESS ENTRY AND ALARM for schematic and connector information.
The RFA module communicates with the scan tool through the Medium Speed Controller Area Network (MS-CAN).
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: DIAGNOSTIC METHODS .
Refer to MODULE COMMUNICATION NETWORK for schematic and connector information.
Refer to TRANSMISSION CONTROL for schematic and connector information.
The TCM communicates with the scan tool through the High Speed Controller Area Network (HS-CAN).
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: DIAGNOSTIC METHODS .
Refer to MODULE COMMUNICATION NETWORK for schematic and connector information.
Refer to POWER STEERING CONTROLS for schematic and connector information.
The PSCM communicates with the scan tool through the High Speed Controller Area Network (HS-CAN).
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: DIAGNOSTIC METHODS .
Note. Various modules set network DTCs during this test procedure. Clear DTCs from all modules after completing the diagnostic procedure.
Note. Failure to disconnect the battery when instructed will result in false resistance readings.
Refer to MODULE COMMUNICATION NETWORK for schematic and connector information.
Refer to: Communications Network - System Operation and Component Description .
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: DIAGNOSTIC METHODS .
Refer to MODULE COMMUNICATION NETWORK for schematic and connector information.
Refer to: Communications Network - System Operation and Component Description .
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: DIAGNOSTIC METHODS .
Refer to MODULE COMMUNICATION NETWORK for schematic and connector information.
Refer to: Communications Network - System Operation and Component Description .
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: DIAGNOSTIC METHODS .
The scan tool is connected to the DLC to communicate with the High Speed Controller Area Network (HS-CAN), Medium Speed Controller Area Network (MS-CAN) and the Infotainment Controller Area Network (I-CAN) communication networks. A loss of ground or poor ground at the DLC can result in High Speed Controller Area Network (HS-CAN), Medium Speed Controller Area Network (MS-CAN) or Infotainment Controller Area Network (I-CAN) faults while the scan tool is connected.