Troubleshooting for Communication Error with Scan Tool Using CAN: Notes
WARNING: This page is about a different car, the 2011 Suzuki SX4. However, it is still accessible from the selected car via links, so may be relevant.
Perform this troubleshooting when it is not possible to communicate between scan tool and ECM/TCM.
NOTE:
- When performing this troubleshooting, be sure to have full understanding of Precaution of Troubleshooting for CAN and observe it.
- It may be possible that CAN system has trouble because of fuse blown or low battery voltage. Before troubleshooting, check to make sure that fuse, battery voltage and generator status are normal.
- When disconnecting each control module connector in this troubleshooting, various DTCs will be detected. Be sure to clear DTCs in the following control modules after completing this troubleshooting.
- ECM
- BCM
- TCM (CVT model)
- Keyless start control module (keyless start model)
- 4WD control module (4WD model)
- ESP® control module (ESP® model)
- HVAC control module (Auto A/C model)
- P/S control module (EPS model)
- SDM (Advanced air bag model)