Network Termination
The CAN uses network termination to improve communication reliability. Termination modules are located at both ends of the network. As network messages are broadcast in the form of voltage signals, the network voltage signals are stabilized by the termination resistors.
Each termination module has an internal 120 ohm resistor that bridges across the positive and negative bus connection. With two 120 ohm resistors located in a parallel circuit configuration, the total network impedance, or total resistance, is 60 ohms.
Network termination improves bus message reliability by
- stabilizing bus voltage.
- eliminating electrical interference.
Gateway Module
The IPC and BCM are gateway modules. The BCM translates messages on the High Speed Controller Area Network (HS-CAN) to the Medium Speed Controller Area Network (MS-CAN) and vice versa. The IPC translates messages on the Medium Speed Controller Area Network (MS-CAN) to the Infotainment Controller Area Network (I-CAN) and vice versa. This allows a message to be distributed throughout all 3 networks.
The IPC and the BCM are the only modules on this vehicle that have this ability.
High Speed Controller Area Network (HS-CAN)
The High Speed Controller Area Network (HS-CAN) operates at a maximum data transfer speed of 500 Kbps and is designed for real time powertrain information transfer and control.
Modules on the High Speed Controller Area Network (HS-CAN) communicate using bussed messages. The High Speed Controller Area Network (HS-CAN) uses an unshielded twisted pair cable, data bus (+) and data bus (-) circuits. In addition to scan tool communication, the High Speed Controller Area Network (HS-CAN) allows sharing of information between all modules on the network.
Medium Speed Controller Area Network (MS-CAN)
The Medium Speed Controller Area Network (MS-CAN) operates at a maximum data transfer speed of 125 Kbps and is designed for general information transfer.
Modules on the Medium Speed Controller Area Network (MS-CAN) communicate using bussed messages. The Medium Speed Controller Area Network (MS-CAN) uses an unshielded twisted pair cable, data bus (+) and data bus (-) circuits. In addition to scan tool communication, the Medium Speed Controller Area Network (MS-CAN) allows sharing of information between all modules on the network.
Infotainment Controller Area Network (I-CAN)
The Infotainment Controller Area Network (I-CAN) operates at a maximum data transfer speed of 500 Kbps and is designed for real time audio and multimedia information transfer and control.
Modules on the Infotainment Controller Area Network (I-CAN) communicate using bussed messages. Infotainment Controller Area Network (I-CAN) uses an unshielded twisted pair cable, data bus (+) and data bus (-) circuits. The Infotainment Controller Area Network (I-CAN) allows sharing of information between all modules on the network.
The Infotainment Controller Area Network (I-CAN) is connected 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 for the messages to transfer between the scan tool and the modules on the Infotainment Controller Area Network (I-CAN).
Controller Area Network (CAN) Fault Tolerance
Note. The oscilloscope traces shown in illustration are from the IDS oscilloscope taken using the IDS pre-configured CAN settings. The traces are for both data (+) and data (-) taken simultaneously (2-channel) at a sample rate of 1 mega-sample per second (1MS/s) or greater.
CAN Circuits Shorted Together
In the event the data (+) and data (-) circuits become shorted together, the signal stays at base voltage (2.5V) continuously and all communication capabilities are lost.
CAN (+) Circuit Shorted to Ground
In the event the data (+) circuit becomes shorted to ground, both the data (+) and data (-) circuits are pulled low (0V) and all communication capabilities are lost.
CAN (-) Circuit Shorted to Ground
In the event the data (-) circuit becomes shorted to ground, the data (-) circuit is pulled low (0V) and the data (+) circuit reaches near-normal peak voltage (3.0V) during communication but falls to 0V instead of normal base voltage (2.5V). Communication may continue but at a degraded level.
CAN (+) Circuit Shorted to Battery Voltage
In the event the data (+) circuit becomes shorted to battery voltage, the data (+) circuit is pulled high (12V) and the data (-) circuit falls to abnormally high voltage (above 5V) during communication and reaches battery voltage (12V) for peak voltage. Communication may continue but at a degraded level.
CAN (-) Circuit Shorted to Battery Voltage
In the event the data (-) circuit becomes shorted to battery voltage, both the data (+) and data (-) circuits are pulled high (12V) and all communication capabilities are lost.
CAN Circuit Signal Corruption
Rhythmic oscillations, inductive spikes or random interference can corrupt the network communications. The corruption signal source may be outside electrical interference such as motors or solenoids or internal interference generated from a module on the network. In some cases, an open in either the data (+) or data (-) circuit to a network module may cause the module to emit interference on the one circuit which is still connected. The trace shown in illustration is an example of a "sawtooth" pattern transmitted from a module with one open network circuit.
Other corruptions may be present when a module is intermittently powered up and down. The module on power up may initiate communication out of sync with other modules on the network causing momentary communication outages.
CAN Multiplex Messages
Note. This chart describes the specific High Speed Controller Area Network (HS-CAN), Medium Speed Controller Area Network (MS-CAN) and Infotainment Controller Area Network (I-CAN) messages broadcast by each module, and the module(s) that receive the message.
| Message | Originating Module | Network Type | Receiving Module(s) |
|---|---|---|---|
| A/C request | BCM | HS-CAN | PCM |
| ABS active | ABS module | HS-CAN | RCM PSCM PAM PCM |
| ABS warning indicator request (gateway) | BCM | MS-CAN | IPC |
| Accelerator pedal position | PCM | HS-CAN | OCSM BCM RCM ABS module HCM |
| Accelerator pedal position (gateway) | BCM | MS-CAN | HVAC module IPC |
| ACM CD data | ACM | I-CAN | FCDIM APIM IPC |
| ACM configuration | ACM | I-CAN | IPC APIM FCDIM DSP |
| ACM configuration (gateway) | IPC | MS-CAN | BCM |
| ACM configuration (gateway) | BCM | HS-CAN | PAM |
| ACM radio function | ACM | I-CAN | FCDIM APIM IPC |
| ACM status | ACM | I-CAN | IPC FCDIM DSP APIM |
| Air ambient temperature | PCM | HS-CAN | BCM HCM PAM |
| Air ambient temperature (gateway) | BCM | MS-CAN | IPC HVAC module |
| Air ambient temperature filtered actual | BCM | MS-CAN | IPC DDM PDM RGTM |
| Air bag deployment status | RCM | HS-CAN | APIM |
| Air bag indicator status | IPC | MS-CAN | BCM |
| Air bag warning indicator status | BCM | HS-CAN | RCM |
| Ambient light level | BCM | MS-CAN | IPC |
| Ambient light setting | BCM | MS-CAN | IPC |
| Audio mute request | BCM | MS-CAN | IPC |
| Audio button status | FCIM | I-CAN | APIM |
| Audio button status | FCDIM | I-CAN | APIM |
| Audio display request mode | FCDIM | I-CAN | APIM |
| Audio mode and setting request | FCDIM | I-CAN | ACM |
| Audio settings | ACM | I-CAN | APIM |
| Audio source request | ACM | I-CAN | IPC FCDIM DSP APIM |
| Audio source select | FCDIM | I-CAN | APIM |
| Audio status | APIM | I-CAN | FCDIM |
| Audio volume command | DSP | I-CAN | FCDIM APIM |
| Audio volume and mode status | DSP | I-CAN | FCDIM APIM |
| AWD service required display | BCM | MS-CAN | IPC |
| AWD status | PCM | HS-CAN | BCM ABS module |
| AWD status (gateway) | BCM | MS-CAN | IPC |
| AWD service required | PCM | HS-CAN | BCM RCM |
| AWD service required (gateway) | BCM | MS-CAN | IPC |
| AWD lock torque data | PCM | HS-CAN | BCM |
| AWD lock torque data (gateway) | BCM | MS-CAN | IPC |
| AWD wheel torque data | PCM | HS-CAN | BCM ABS module |
| AWD wheel torque data (gateway) | BCM | MS-CAN | IPC |
| Battery charge indicator | BCM | MS-CAN | IPC |
| Battery current | BCM | HS-CAN | PCM |
| Battery state of charge | IPC | I-CAN | APIM FCDIM |
| Beltminder status | IPC | I-CAN | ACM DSP |
| Beltminder audio status | DSP | I-CAN | APIM FCDIM |
| Bezel test request | FCDIM | I-CAN | ACM DSP |
| Bezel test status | FCIM | I-CAN | APIM |
| Bezel test status | DSP | I-CAN | APIM FCDIM |
| BLIS® alert | BCM | MS-CAN | DDM PDM |
| BLIS® system status | BCM | MS-CAN | IPC |
| BLIS® status, driver side | DDM | MS-CAN | BCM |
| BLIS® status, driver side | BCM | MS-CAN | IPC |
| BLIS® status, passenger side | PDM | MS-CAN | BCM |
| BLIS® status, passenger side | BCM | MS-CAN | IPC |
| Brake fluid level low | BCM | HS-CAN | IPC |
| Brake On/Off switch | PCM | HS-CAN | OCSM RCM ABS module BCM HCM |
| Brake pedal applied | PCM | HS-CAN | BCM |
| Brake (red) warning indicator request | BCM | MS-CAN | IPC |
| Bulb failure indication | BCM | MS-CAN | IPC |
| Call data | APIM | I-CAN | FCDIM |
| Camera commands | APIM | I-CAN | IPC |
| Camera commands (gateway) | IPC | MS-CAN | BCM IPMB (if equipped) |
| Camera status | BCM | MS-CAN | IPC |
| Camera status (gateway) | IPC IPMB (if equipped) | I-CAN | APIM |
| Car mode | BCM | MS-CAN | DDM PDM HVAC module IPC RFA module RGTM TRM |
| CD changer data | FCDIM | I-CAN | ACM |
| CD load/eject | ACM | I-CAN | FCDIM |
| Central lock status | BCM | MS-CAN | RFA module DDM IPC RGTM |
| Charge voltage request | BCM | HS-CAN | PCM |
| Charging system indicator request | BCM | MS-CAN | IPC |
| Child lock command | BCM | MS-CAN | DDM PDM |
| Chime mode | IPC | I-CAN | ACM DSP |
| Chime request | ACM | I-CAN | DSP |
| Climate control requests | IPC | MS-CAN | HVAC module |
| Climate control status | HVAC module | MS-CAN | IPC |
| Climate control status (gateway) | IPC | I-CAN | FCDIM APIM |
| Climate control remote start requests | HVAC module | MS-CAN | IPC |
| Cross traffic command | IPC | MS-CAN | BCM |
| Cross traffic status | BCM | MS-CAN | IPC |
| Cruise control setting | PCM | HS-CAN | BCM |
| Cruise control status | PCM | HS-CAN | RCM OCSM BCM ABS module |
| Cruise control status (gateway) | BCM | MS-CAN | IPC |
| Date and time | IPC | I-CAN | APIM FCDIM |
| Date and time adjustment request | FCDIM | I-CAN | IPC |
| Date and time adjustment request (gateway) | IPC | MS-CAN | BCM |
| Day/night request | IPC | I-CAN | APIM FCIM |
| Defrost request | HVAC module | MS-CAN | BCM |
| Dimmer switch position | BCM | MS-CAN | IPC |
| Display language request | FCDIM | I-CAN | IPC |
| Display set volume request | FCDIM | I-CAN | ACM DSP |
| Door ajar status | IPC | I-CAN | FCDIM APIM |
| Door lock status | IPC | I-CAN | FCDIM APIM |
| Door lock status request | BCM | MS-CAN | DDM PDM |
| Door status | BCM | MS-CAN | RFA module DDM RGTM |
| Door ajar status | BCM | HS-CAN | ABS module |
| Driver safety belt status | RCM | HS-CAN | BCM PCM |
| Drivers door latch status | DDM | MS-CAN | BCM |
| Drivers window position | DDM | MS-CAN | BCM HVAC module |
| ECall confirmation | APIM | HS-CAN | RCM BCM |
| ECall notification | RCM | HS-CAN | APIM |
| Econometer data | PCM | HS-CAN | BCM |
| Econometer data (gateway) | BCM | MS-CAN | IPC |
| Emergeny braking event | ABS module | HS-CAN | BCM |
| Engine coolant temperature | PCM | HS-CAN | BCM |
| Engine coolant temperature (gateway) | BCM | MS-CAN | IPC HVAC module |
| Engine coolant temperature fault reporting | BCM | MS-CAN | IPC |
| Engine oil life reset | IPC | MS-CAN | BCM |
| Engine oil life reset (gateway) | BCM | HS-CAN | PCM |
| Engine RPM | PCM | HS-CAN | BCM ABS module |
| Engine RPM (gateway) | BCM | MS-CAN | IPC HVAC module HCM |
| Engine service indication | PCM | HS-CAN | BCM |
| Engine service indication (gateway) | BCM | MS-CAN | IPC |
| Engine state | PCM | HS-CAN | BCM |
| EPAS display | PSCM | HS-CAN | BCM |
| EPAS display (gateway) | BCM | MS-CAN | IPC |
| Evaporator temperature setting | HVAC module | MS-CAN | BCM |
| English/metric equivalent | BCM | HS-CAN | PCM |
| Exterior light switch position | BCM | HS-CAN | HCM |
| FCIM button state | FCIM | I-CAN | ACM APIM DSP |
| FCIM button status | FCIM | I-CAN | APIM |
| FCDIM configuration | FCDIM | I-CAN | ACM |
| Fog lamp indicator request | BCM | MS-CAN | IPC |
| Front passenger safety belt buckle status | RCM | HS-CAN | OCSM BCM |
| Front washer command | BCM | MS-CAN | IPC HVAC module |
| Fuel level status | BCM | HS-CAN | PCM |
| Fuel level status | BCM | MS-CAN | IPC |
| Fuel level status (gateway) | IPC | I-CAN | APIM |
| Fuel pump cutoff request | RCM | HS-CAN | BCM |
| Fuel pump ON/OFF | PCM | HS-CAN | BCM |
| Gear lever position | IPC | I-CAN | ACM APIM DSP FCDIM |
| GPS data | GPSM | MS-CAN | IPC APIM |
| Headlamp control status | HCM | HS-CAN | BCM |
| Headlamp control status (gateway) | BCM | MS-CAN | IPC |
| High beam indicator request | BCM | MS-CAN | IPC |
| Hill start assist status | ABS module | HS-CAN | PCM |
| Home safe light indication request | BCM | MS-CAN | IPC |
| Hood ajar status | BCM | HS-CAN | ABS module |
| Ignition key position power mode | IPC | I-CAN | ACM APIM DSP FCIM FCDIM |
| Ignition key position power mode | BCM | MS-CAN | RFA module DDM PDM DSM IPC TRM IPMB (if equipped) |
| Ignition key position power mode | BCM | HS-CAN | ABS module PCM HCM PAM PSCM RCM SASM |
| Ignition key type | IPC | MS-CAN | RFA module BCM |
| Ignition key type (gateway) | BCM | HS-CAN | PAM ABS module |
| Ignition status | BCM | MS-CAN | IPC GPSM |
| Ignition status (gateway) | IPC | I-CAN | APIM ACM DSP FCIM FCDIM |
| Illumination dimming level | BCM | HS-CAN | PCM PAM RCM |
| Illumination dimming level | BCM | MS-CAN | IPC PDM DDM IPMB (if equipped) |
| Illumination dimming level (gateway) | IPC | I-CAN | FCIM FCDIM APIM |
| Illumination dimming level | IPC | MS-CAN | BCM HVAC module |
| Keyless access central lock command | RFA module | MS-CAN | BCM RGTM |
| Keyless access indication | BCM | MS-CAN | IPC |
| Keyless access key status | RFA module | MS-CAN | BCM |
| Keyless access system status | RFA module | MS-CAN | BCM |
| Keyless access request target data | BCM | MS-CAN | RFA module |
| Key warning indication | BCM | MS-CAN | IPC |
| Language display | IPC | I-CAN | APIM FCDIM |
| Left rear window position | DDM | MS-CAN | BCM HVAC module |
| Liftgate ajar status | BCM | HS-CAN | ABS module |
| Light switch position | BCM | MS-CAN | IPC |
| Load shed level | IPC | I-CAN | APIM |
| Main light switch position | BCM | MS-CAN | IPC |
| Memory seat position | DSM | MS-CAN | DDM PDM IPC |
| MIL request | PCM | HS-CAN | BCM RCM |
| MIL request (gateway) | BCM | MS-CAN | IPC |
| MyKey® identification | BCM | MS-CAN | IPC |
| MyKey® reset request | BCM | MS-CAN | IPC |
| MyKey® speed limit configuration | BCM | HS-CAN | PCM |
| MyKey® volume limit status | IPC | I-CAN | DSP ACM |
| MyKey® volume limit status | DSP | I-CAN | APIM FCDIM |
| MyKey® volume limit mode | ACM | I-CAN | APIM FCDIM |
| Navigation data | IPC | I-CAN | APIM |
| Navigation request audio setting | FCDIM | I-CAN | ACM DSP |
| Navigation request | FCDIM | I-CAN | ACM |
| Neutral tow status | PCM | HS-CAN | BCM |
| Neutral tow status (gateway) | BCM | MS-CAN | IPC |
| OCS calibration data | OCSM | HS-CAN | RCM |
| OCS fault status | OCSM | HS-CAN | RCM |
| OCS sensor data | OCSM | HS-CAN | RCM |
| OCS serial number | OCSM | HS-CAN | RCM |
| Odometer master value | BCM | HS-CAN | PCM ABS module |
| Odometer master value | IPC | MS-CAN | DDM PDM BCM |
| Oil change indicator | PCM | HS-CAN | BCM |
| Oil change indicator (gateway) | BCM | MS-CAN | IPC |
| Oil pressure warning | PCM | HS-CAN | BCM |
| Oil pressure warning (gateway) | BCM | MS-CAN | IPC |
| Outer mirror defrost command | BCM | MS-CAN | DDM PDM |
| Outside air temperature status | IPC | I-CAN | APIM DSP FCIM FCDIM |
| Park brake indication | BCM | MS-CAN | IPC |
| Parking aid active | PAM | HS-CAN | BCM |
| Parking aid active (gateway) | BCM | MS-CAN | IPC IPMB (if equipped) |
| Parking aid disable status | PAM | HS-CAN | BCM |
| Parking aid disable status (gateway) | BCM | MS-CAN | IPC IPMB (if equipped) |
| Parking aid range to object | PAM | HS-CAN | BCM |
| Parking aid range to object (gateway) | BCM | MS-CAN | IPC IPMB (if equipped) |
| Parking aid rear camera settings | IPC | MS-CAN | IPMB (if equipped) |
| Parking assist distance sensor data | IPC | I-CAN | APIM FCDIM |
| Parking brake actual | BCM | HS-CAN | PCM ABS module |
| Parking brake warning | IPC | I-CAN | APIM |
| PRNDL park position indicator | IPC | MS-CAN | BCM |
| Passenger detect status | BCM | MS-CAN | IPC |
| Passenger mirror command | DDM | MS-CAN | PDM |
| Passenger window command | DDM | MS-CAN | PDM |
| Passenger window position | PDM | MS-CAN | BCM HVAC module |
| Passengers door latch status | PDM | MS-CAN | BCM |
| Passenger door lock request | PDM | MS-CAN | BCM |
| PATS indication | BCM | MS-CAN | IPC |
| PATS status enable/disable target data | PCM | HS-CAN | BCM |
| PATS start request target data | BCM | HS-CAN | PCM |
| Passive key out of vehicle | RFA module | MS-CAN | BCM IPC |
| Passive key sensor confirm | BCM | MS-CAN | RFA module |
| Passive key liftgate status | RFA module | MS-CAN | IPC RGTM |
| Passive key status | BCM | MS-CAN | IPC |
| Passive key warning indicator | RFA module | MS-CAN | BCM IPC |
| Passive liftgate release command | RFA module | MS-CAN | RGTM |
| Position light indication | BCM | MS-CAN | IPC TRM |
| Power liftgate request | BCM | MS-CAN | RGTM |
| Power mode | IPC | I-CAN | FCDIM ACM APIM DSP FCIM |
| Power mode | BCM | HS-CAN | ABS module SASM PSCM PAM PCM RCM HCM |
| Power mode | BCM | MS-CAN | RFA module PDM IPC DDM DSM TRM |
| Power pack status | PCM | HS-CAN | BCM ABS module |
| Power system status | BCM | MS-CAN | IPC |
| Puddle lamp activation | BCM | MS-CAN | DDM PDM |
| RCM serial number | RCM | HS-CAN | ABS module |
| Rear defrost status | BCM | MS-CAN | HVAC module |
| Rear door latch status | DDM | MS-CAN | BCM |
| Rear passenger safety belt buckle status | RCM | HS-CAN | BCM |
| Rear window disable command | DDM | MS-CAN | PDM BCM |
| Restraint impact event status | RCM | HS-CAN | BCM OCSM |
| Reverse gear | PCM | HS-CAN | RCM PAM OCSM IPC ABS module BCM |
| Reverse gear (gateway) | BCM | MS-CAN | PDM DDM GPSM IPC TRM |
| Remote battery status | BCM | MS-CAN | IPC |
| Remote start command | BCM | MS-CAN | HVAC module |
| RKE lock command (with push-button start) | RFA module | MS-CAN | BCM DDM PDM |
| RKE settings | BCM | MS-CAN | RFA module |
| RKE data (with push-button start) | RFA module | MS-CAN | BCM |
| Roll stability control mode | ABS module | HS-CAN | PSCM |
| Safety belt status | BCM | MS-CAN | IPC |
| Satellite radio error status | ACM | I-CAN | APIM FCDIM |
| Satellite radio status | ACM | I-CAN | APIM FCDIM |
| Satellite radio data | ACM | I-CAN | IPC FCDIM APIM |
| Selected display language | APIM | I-CAN | IPC |
| Selected display language (gateway) | IPC | I-CAN | APIM FCDIM |
| Safety belt event status | RCM | HS-CAN | APIM |
| Selector lever (PRNDL) status | IPC | I-CAN | ACM APIM DSP FCDIM |
| Selector lever (PRNDL) status (gateway) | BCM | MS-CAN | PDM IPC DDM HVAC module RGTM TRM |
| Set point volume | FCIM | I-CAN | ACM DSP |
| Set volume | FCIM | I-CAN | ACM DSP |
| Stability control brake active | ABS module | HS-CAN | PSCM PAM PCM RCM |
| Stability control mode request | BCM | HS-CAN | ABS module |
| Stability/traction control disabled indicator request | ABS module | HS-CAN | BCM PCM |
| Stability/traction control disabled indicator request (gateway) | BCM | MS-CAN | IPC |
| Stability/traction control indication | ABS module | HS-CAN | BCM RCM |
| Stability/traction control indication (gateway) | BCM | MS-CAN | IPC |
| Stability/traction control disable | IPC | MS-CAN | BCM |
| Start/stop button indicator | PCM | HS-CAN | BCM |
| Start/stop display message | BCM | MS-CAN | IPC |
| Steering angle status | SASM | HS-CAN | PSCM PAM PCM BCM ABS module HCM |
| Steering angle status (gateway) | BCM | MS-CAN | IPMB (if equipped) |
| Steering angle counter | PAM | HS-CAN | PSCM |
| Steering wheel switch data | IPC | I-CAN | ACM |
| Steering wheel switch data | FCDIM | I-CAN | APIM |
| Stoplamp activation | BCM | MS-CAN | TRM |
| Stoplamp request | ABS module | HS-CAN | BCM |
| SYNC® alerts | APIM | I-CAN | ACM DSP |
| Temperature display units | APIM | I-CAN | IPC |
| Tire pressure data | RFA module | MS-CAN | BCM |
| Tire pressure data (gateway) | BCM | MS-CAN | IPC |
| Tire pressure data (gateway) | BCM | HS-CAN | APIM |
| Tire pressure indication | BCM | MS-CAN | IPC |
| TPMS command | PCM | MS-CAN | RFA module |
| Torsion bar torque | PSCM | HS-CAN | PAM ABS module |
| Traction control brake active | ABS module | HS-CAN | PSCM RCM PCM |
| Traction control mode | ABS module | HS-CAN | RCM PSCM PAM PCM |
| Trailer lamp check | TRM | MS-CAN | BCM IPC |
| Trailer module connect status | IPC | I-CAN | APIM FCDIM |
| Trailer lamp connection status | TRM | MS-CAN | BCM IPC IPMB (if equipped) |
| Trailer lamp connection status (gateway) | BCM | HS-CAN | ABS module PCM PAM |
| Transmission gear display | PCM | HS-CAN | BCM |
| Transmission gear display (gateway) | BCM | MS-CAN | IPC |
| Transmission gear position | PCM | HS-CAN | ABS module |
| Transmission gear lever position | PCM | HS-CAN | ABS module BCM HCM OCSM PAM RCM |
| Transmission in reverse | PCM | HS-CAN | BCM ABS module PSCM OCSM PAM HCM |
| Transmission message request | PCM | HS-CAN | BCM |
| Transmission message request (gateway) | BCM | MS-CAN | IPC |
| Transmission mode display | PCM | HS-CAN | BCM |
| Transmission mode display (gateway) | BCM | MS-CAN | IPC |
| Transmission neutral tow mode status | PCM | HS-CAN | BCM |
| Transmission park lock control | BCM | MS-CAN | IPC |
| Transmission service required | PCM | HS-CAN | BCM |
| Transmission service required (gateway) | BCM | MS-CAN | IPC |
| Transmission shift indicator | PCM | HS-CAN | BCM |
| Transmission shift indicator (gateway) | BCM | MS-CAN | IPC |
| Transmission shift mode | PCM | HS-CAN | BCM |
| Transmission shift mode (gateway) | BCM | MS-CAN | IPC |
| Transmission upshift indication request | BCM | MS-CAN | IPC |
| Transmission torque data | PCM | HS-CAN | ABS module |
| Transport mode | IPC | I-CAN | ACM FCDIM |
| Transport mode | BCM | HS-CAN | PSCM PAM PCM ABS module |
| Transport mode | BCM | MS-CAN | IPC |
| Turn indicator command | BCM | MS-CAN | IPC TRM |
| Vehicle configuration data | BCM | HS-CAN | PCM PSCM RCM PAM HCM |
| Vehicle speed | ABS module | HS-CAN | PSCM BCM |
| Vehicle speed (gateway) | BCM | MS-CAN | IPC PDM DDM RGTM |
| Vehicle speed (gateway) | IPC | I-CAN | ACM FCDIM |
| Vehicle trip display units | APIM | I-CAN | IPC |
| Vehicle yaw rate | RCM | HS-CAN | BCM |
| Vehicle yaw rate (gateway) | BCM | MS-CAN | GPSM |
| Vehicle yaw rate | ABS module | HS-CAN | PCM PSCM PAM |
| Washer fluid level low | BCM | MS-CAN | IPC |
| Washer rear command | BCM | MS-CAN | IPC |
| Wheel measurement | ABS module | HS-CAN | BCM PCM PAM PSCM |
| Wheel rotation count | ABS module | HS-CAN | BCM PAM |
| Wheel rotation count (gateway) | BCM | MS-CAN | IPC |
| Wheel rotation count front | ABS module | HS-CAN | BCM PAM |
| Wheel rotation count front (gateway) | BCM | MS-CAN | IPC |
| Wheel rotation direction | ABS module | HS-CAN | BCM PCM PAM |
| Wheel rotation direction (gateway) | BCM | MS-CAN | GPSM |
| Wheel speed data | BCM | MS-CAN | GPSM IPC |
| Wheel speed data (gateway) | IPC | I-CAN | FCDIM |
| Wiper speed information | BCM | MS-CAN | HVAC module |
Possible Sources
- Fuse
- Wiring, terminals and connectors
- PCM
- Fuse
- Wiring, terminals and connectors
- ABS module
Possible Causes
- Fuse
- Wiring, terminals and connector
- BCM
- Fuse
- Wiring, terminals and connector
- IPC
- Fuse
- Wiring, terminals and connector
- PSCM
- Fuse
- Wiring, terminals and connectors
- RCM
- Fuse
- Wiring, terminals and connector
- OCSM
- Fuse
- Wiring, terminals and connector
- SASM
- Fuse
- Wiring, terminals and connector
- PAM
- Fuse
- Wiring, terminals and connector
- RFA module
- Fuse
- Wiring, terminals and connector
- APIM
- Fuse
- Wiring, terminals and connector
- ACM
- Fuse
- Wiring, terminals and connector
- FCIM
- Fuse
- Wiring, terminals or connectors
- FCDIM
- Fuse
- Wiring, terminals or connectors
- GPSM
- Fuse
- Wiring, terminals and connector
- BCM
- SODL
- SODR
- Fuse
- Wiring, terminals and connector
- DSM
- Fuse
- Wiring, terminals and connector
- HVAC module
- Fuse
- Wiring, terminals and connector
- DSP
- Fuse
- Wiring, terminals and connector
- Headlamp Control Module (HCM)
- Fuse
- Wiring, terminals and connector
- DDM
- Fuse
- Wiring, terminals and connector
- PDM
- Fuse
- Wiring, terminals and connector
- RGTM
- Fuse
- Wiring, terminals and connector
- IPMB
- Fuse
- Wiring, terminals and connector
- TRM
No HS-CAN Communication, All Modules Are Not Responding
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 COMMUNICATIONS NETWORK for schematic and connector information.
- Fuse
- Wiring, terminals or connectors
- ABS module
- APIM
- BCM
- Headlamp Control Module (HCM) (if equipped)
- OCSM
- PAM (if equipped)
- PSCM
- PCM
- SASM
- RCM
No MS-CAN Communication, All Modules Are Not Responding
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 COMMUNICATIONS NETWORK for schematic and connector information.
- Fuse
- Wiring, terminals or connectors
- APIM (if equipped)
- BCM
- DDM (if equipped)
- DSM
- GPSM (if equipped)
- HVAC module
- IPMB (if equipped)
- IPC
- PDM (if equipped)
- RGTM (if equipped)
- RFA module
- TRM (if equipped)
No: Infotainment Controller Area Network (I-CAN) Communication, All Modules Are Not Responding
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 COMMUNICATIONS NETWORK for schematic and connector information.
- Fuse
- Wiring, terminals or conectors
- ACM
- APIM (if equipped)
- DSP (if equipped)
- IPC
- FCDIM (if equipped)
- FCIM
- Fuse
- Wiring, terminals or connector
- DLC
- Diagnostic scan tool
Configuration
Pinpoint Test A
- NOTE: For vehicles with push-button start, refer to «STEERING WHEEL AND COLUMN ELECTRICAL COMPONENTS»(ref-658876-S29228635432014092900000) .
- NOTE: If the RFA module has been replaced, it may not be possible to place the ignition in RUN. The RFA module can communicate with a scan tool with the ignition in the OFF state.
- Turn ignition to RUN.