The skid control ECU (brake booster with master cylinder assembly) sends signals such as brake request signals to the hybrid vehicle control ECU. When the hybrid vehicle control ECU detects logic error signals sent from the skid control ECU (brake booster with master cylinder assembly) for a certain period of time, DTC P163181 is stored.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate | Note |
|---|---|---|---|---|---|---|
| P163181 | Communication Error from ECM to VSC Invalid Serial Data Received | When the ignition switch is ON and the dynamic radar cruise control system is operating, the hybrid vehicle control ECU detects logic error signals sent from the skid control ECU (brake booster with master cylinder assembly) for approximately 1 second or more.
(1 trip detection logic) |
·
Electronically controlled brake system ·
Hybrid vehicle control ECU |
Does not come on | Master Warning:
Does not come on |
SAE Code:
P1631 |
Before replacing the hybrid vehicle control ECU, refer to 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 P163181 is not output | A |
| DTC P163181 is output | B |
A
B