DTC U0073: 00, U0100:00, U0121:00, U0131:00, U0155:00 Can System Communication Error (HS Can): Notes
WARNING: This page is about a different variant/trim than selected.
DTC U0073:00, U0100:00, U0121:00, U0131:00, U0155:00 DETECTION CONDITIONS AND POSSIBLE CAUSES (FW6A-EL)
| DTC U0073:00 |
CAN system communication error (HS CAN) |
| DETECTION CONDITION |
- Under the following condition, a communication error (HS CAN) occurs:
- Battery voltage is 10 V or more.
Diagnostic support note
- The check engine light does not illuminate.
- The automatic transaxle warning light does not illuminate.
- PENDING CODE is available.
- FREEZE FRAME DATA is not available.
- DTC is stored in the TCM memory.
|
| FAIL-SAFE FUNCTION |
- Inhibits learning control.
- Inhibits neutral idle control.
- Inhibits AAS.
|
| POSSIBLE CAUSE |
- CAN bus communication line malfunction (HS CAN)
- TCM malfunction
|
| SYSTEM WIRING DIAGRAM |
Not applicable |
| DTC U0100:00 |
Communication error to PCM (HS CAN) |
| DETECTION CONDITION |
- Under the following condition, the TCM cannot receive the signal from PCM (HS CAN):
- Battery voltage is 10 V or more
.
Diagnostic support note
- The check engine light illuminates if the TCM detects the above malfunction condition during the first drive cycle.
- The automatic transaxle warning light does not illuminate.
- PENDING CODE is available.
- FREEZE FRAME DATA is available.
- DTC is stored in the TCM memory.
|
| FAIL-SAFE FUNCTION |
- Inhibits learning control.
- Inhibits neutral idle control.
- Inhibits AAS.
|
| POSSIBLE CAUSE |
- CAN communication line malfunction between PCM and TCM (HS CAN)
- TCM malfunction
|
| SYSTEM WIRING DIAGRAM |
Not applicable |
| DTC U0121:00 |
Communication error to DSC HU/CM |
| DETECTION CONDITION |
- Under the following condition, the TCM cannot receive the signal from DSC HU/CM:
- Battery voltage is 10 V or more.
Diagnostic support note
- The check engine light illuminates if the TCM detects the above malfunction condition during the first drive cycle.
- The automatic transaxle warning light does not illuminate.
- PENDING CODE is available.
- FREEZE FRAME DATA is available.
- DTC is stored in the TCM memory.
|
| FAIL-SAFE FUNCTION |
- Inhibits learning control.
- Inhibits neutral idle control.
- Inhibits AAS.
|
| POSSIBLE CAUSE |
- CAN communication line malfunction between TCM and DSC HU/CM
- TCM malfunction
|
| SYSTEM WIRING DIAGRAM |
Not applicable |
| DTC U0131:00 |
Communication error to EPS control module |
| DETECTION CONDITION |
- Under the following condition, the TCM cannot receive the signal from EPS control module:
- Battery voltage is 10 V or more.
Diagnostic support note
- The check engine light does not illuminate.
- The automatic transaxle warning light does not illuminate.
- PENDING CODE is available.
- FREEZE FRAME DATA is not available.
- DTC is stored in the TCM memory.
|
| FAIL-SAFE FUNCTION |
- Inhibits learning control.
- Inhibits neutral idle control.
|
| POSSIBLE CAUSE |
- CAN communication line malfunction between TCM and EPS control module
- TCM malfunction
|
| SYSTEM WIRING DIAGRAM |
Not applicable |
| DTC U0155:00 |
Communication error to instrument cluster |
| DETECTION CONDITION |
- Under the following condition, the TCM cannot receive the signal from instrument cluster:
- Battery voltage is 10 V or more.
Diagnostic support note
- The check engine light illuminates if the TCM detects the above malfunction condition during the first drive cycle.
- The automatic transaxle warning light does not illuminate.
- PENDING CODE is available.
- FREEZE FRAME DATA is available.
- DTC is stored in the TCM memory.
|
| FAIL-SAFE FUNCTION |
- Inhibits learning control.
- Inhibits manual mode.
- Inhibits neutral idle control.
|
| POSSIBLE CAUSE |
- CAN communication line malfunction between TCM and instrument cluster
- TCM malfunction
|
| SYSTEM WIRING DIAGRAM |
Not applicable |