The skid control ECU (brake actuator assembly) sends signals such as brake request signals to the ECM. If an abnormal signal is detected, the ECM stores DTC P163081.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | DTC Output from |
|---|---|---|---|---|
| P163081 | Communication Error from VSC to ECM Invalid Serial Data Received | When the dynamic radar cruise control system is operating, the ECM detects abnormal data sent from the skid control ECU (brake actuator assembly) for approximately 1 second or more. | ·
Electronically controlled brake system ·
ECM |
Cruise Control |
Before replacing the ECM, refer to the Service Bulletin.
Check for electronically controlled brake system DTCs.
| Result | Proceed to |
|---|---|
| Electronically controlled brake system DTCs are not output | A |
| Electronically controlled brake system DTCs are output | B |
A
B
Clear the DTCs.
Make sure that the DTC detection conditions are met.
If the detection conditions are not met, the system cannot detect the malfunction.
Check for DTCs.
| Result | Proceed to |
|---|---|
| DTC P163081 is not output | A |
| DTC P163081 is output | B |
A
B
for M20C-FKS:
for M20D-FKS: