Loss of Communication DTC Cross-Reference Chart
When an ECU on the CAN circuit is unable to communicate with other ECUs on the CAN circuit, the other control units will set loss of communication DTCs. Use this chart to find the ECU that is not communicating with the other ECUs on the CAN circuit.
1. Find the Transmitting Control Unit that is in the same row as all of the loss of communication DTCs that you retrieved.
2. Do the input test for the transmitting control unit.
Loss of Communication
| Loss of Communication DTC | Transmitting Control Unit | |||||||||||
| Relay Control Module | Body Control Module | Driver's Door Control Unit | Power Tailgate Control Unit | Gauge Control Module | Climate Control Unit | Left Side BSI Radar Unit | Ventilated Seat Control Unit | Front Seat Heater Control Unit | Right Side BSI Radar Unit | Second Row Seat Heater Control Unit | ||
TX: Transmitting units do not set loss of communication DTCs.
| Receiving Control Unit | Relay Control Module | TX | U1281 | U128D | ||||||||
| Body Control Module | U1291 | TX | U128D | |||||||||
| Keyless Access Backup Control Unit | U128D | |||||||||||
| Keyless Access Control Unit | U1281 | U128D | ||||||||||
| Keyless Access Power Control Unit | U1281 | U128D | ||||||||||
| Driver's Door Control Unit | U1281 | TX | U128D | U1299 | ||||||||
| Power Tailgate Control Unit | U1281 | U0199 | TX | U128D | ||||||||
| Gauge Control Module | U1281 | U0230 | TX | U128F | ||||||||
| Climate Control Unit | U1281 | U128D | TX | U1290 | U1290 | U129B | ||||||
| Automatic Lighting Control Unit-Sensor | U1281 | U128D | ||||||||||
| Master Lighting Control Unit | U1281 | U128D | ||||||||||
| Telematics Control Unit | U1281 | U128D | ||||||||||
| Driver's Power Seat Control Unit | U1281 | U0199 | U128D | |||||||||
| Left Side BSI Radar Unit | U1281 | U128D | TX | U1297 | ||||||||
| Ventilated Seat Control Unit | U1064 | TX | ||||||||||
| Front Seat Heater Control Unit | U1064 | TX | ||||||||||
| Front Passenger's Power Seat Control Unit | U1281 | |||||||||||
| Right Side BSI Radar Unit | U1281 | U128D | U128F | TX | ||||||||
| Wireless Charger | U1281U1286 | U128D | ||||||||||
| Second Row Seat Heater Control Unit | U1064 | TX |
TX: Transmitting units do not set loss of communication DTCs.