The Communication Line Check
While in the self-diagnostic mode, the Communication Line Check starts after the LCD Segments Check.
If all segments come on, the communication line is OK. If faulty, the word "Error" will be indicated on the odometer display followed by number(s).
Error Code List
ERROR CODE LIST REFERENCE
| Error code | Type of communication line(s) error |
|---|---|
| Error 1 | F-CAN communication |
| Error 2 | B-CAN communication |
| Error 3 | UART communication |
| Error 12 | F-CAN and B-CAN communication |
| Error 13 | F-CAN and UART communication |
| Error 23 | B-CAN and UART communication |
| Error 123 | F-CAN, B-CAN and UART communication |
Example Indication
- If the word "Error 1" is indicated, there is a malfunction in the communication line between the GAUGE CONTROL MODULE (TACH) and the fast-controller area network (F-CAN). Check for DTCs in the ECM/PCM and troubleshoot any DTCs found. If no DTCs are found, go to INDICATED TROUBLESHOOTING .
- If the word "Error 2" is indicated, there is a malfunction in the communication line between the GAUGE CONTROL MODULE (TACH) and the body-controller area network (B-CAN). Go to DTC B1155: Gauge Control Module Lost Communication with the MICU (Headlight Switch Message) indicated troubleshooting (B1155 to B1160).
- If the word "Error 3" is indicated, there is a malfunction in the UART communication line between the GAUGE CONTROL MODULE (TACH) and the gauge control module (speedo). Go to the GAUGE CONTROL MODULE (TACH) input test and check the No. 20 terminal. If the wire harness is OK, substitute a known-good gauge control module (speedo) and recheck.
If any F-CAN or B-CAN communication line errors are found, go to DTC check using HDS.