Loss of Communication DTC cross-reference chart
When an ECU is unable to communicate with the other ECUs on the CAN circuit, the other control units will set loss of communication DTCs. Use this chart to find the control unit that is not communicating.
- Find the Transmitting Control Unit that is in the same row as all of the loss of communication DTCs retrieved.
- Do the input test for the transmitting control unit.
TROUBLE SHOUTING CHART (BUS OFF AND INTERNAL ERROR CODES)
| DTC type | Related Unit | ||||||
|---|---|---|---|---|---|---|---|
| MICU | Gauge Control Module | Climate Control Unit | Hands FreeLink Control Unit | Power Seat Control Unit ('08 model) | Immobilizer-Keyless Control Unit | AcuraLink Control Unit (XM Receiver) | |
| BUS OFF | B1000 | B1150 | B1200 | B1750 | B1800 | B1900 | B2200 |
| ECU (CPU) Error | B1001 | ||||||
| ECU (EEPROM) Error | B1002 | B1152 | B1802 | ||||
| ECU (Internal) Error | B1792 | B2209 | |||||
TROUBLE SHOUTING CHART
| Transmitting Control Unit | Message | Receiving Unit/Loss of Communication DTC | |||||||
|---|---|---|---|---|---|---|---|---|---|
| MICU | Gauge Control Module | Climate Control Unit | Hands FreeLink Control Unit | Immobilizer-Keyless Control Unit | Power Seat Control Unit ('08 model) | AcuraLink Control Unit (XM Receiver) | Navigation Unit | ||
| MICU | RM | TX | B1188 | ||||||
| HLSW | TX | B1155 | |||||||
| WIPSW | TX | B1156 | |||||||
| MICU | TX | B1157 | B1806 | ||||||
| DOORSW | TX | B1159 | |||||||
| DRLOCKSW | TX | B1160, | B1905 | ||||||
| Gauge Control Module | VSP/NE | B1011 | TX | B1205 | B1805 | ||||
| A/T | B1008 | TX | B1906 | B1808 | |||||
| ENGTEMP | TX | B1206 | |||||||
| ILLMI | TX | B1207 | |||||||
| CDS (SRS) | B1032 | TX | |||||||
| PCM | ENGTEMP | B1168 | |||||||
| A/T | B1169 | ||||||||
| VSA | VSA | B1170 | |||||||
| TPMS | TPMS | B1173 | |||||||
| SRS Unit | SRS MSG | B1187 | |||||||
| AcuraLink | B2208 | B2207 | |||||||
| TX: Transmitting unit does not set a loss communication DTC. | |||||||||