Toyota Camry (XV70): Communication Error from ECM to VSC Invalid Serial Data Received (P163181)
DESCRIPTION
The skid control ECU (brake actuator assembly) sends signals such as brake request signals to the ECM. When the ECM detects logic error signals sent from the skid control ECU (brake actuator assembly) for a certain period of time, DTC P163181 is stored.
|
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
DTC Output from |
|---|---|---|---|---|
|
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 ECM detects logic error signals sent from the skid control ECU (brake actuator assembly) for approximately 1 second or more. |
| Cruise Control |
CAUTION / NOTICE / HINT
NOTICE:
Before replacing the ECM, refer to Registration.
w/ Smart Key System: Click here
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w/o Smart Key System: Click here
PROCEDURE
| 1. |
CHECK FOR DTCs (VEHICLE STABILITY CONTROL SYSTEM) |
(a) Check for vehicle stability control system DTCs.
Chassis > Brake > Trouble Codes|
Result | Proceed to |
|---|---|
|
Vehicle stability control system DTCs are not output |
A |
| Vehicle stability control system DTCs are output |
B |
| B |
.gif) | GO TO VEHICLE STABILITY CONTROL SYSTEM w/ Electric Parking Brake System: Click here
w/o Electric Parking Brake System: Click here
|
|
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| 2. |
CHECK FOR DTCs (Radar Cruise1) |
(a) Clear the DTCs.
Powertrain > Cruise Control > Clear DTCs(b) Make sure that the DTC detection conditions are met.
HINT:
If the detection conditions are not met, the system cannot detect the malfunction.
(c) Check for DTCs.
Powertrain > Cruise Control > Trouble Codes|
Result | Proceed to |
|---|---|
|
DTC P163181 is not output |
A |
| DTC P163181 is output |
B |
| A |
| USE SIMULATION METHOD TO CHECK
|
| B |
| REPLACE ECM for A25A-FKS: Click here for 2GR-FKS: Click here
|
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Freeze Frame Data
FREEZE FRAME DATA FREEZE FRAME DATA/INFORMATION
(a) Using the Techstream, check the vehicle condition (ECU, sensor) when the brake system operates or a DTC is output.
CHECK FREEZE FRAME DATA AND INFORMATION WHEN DTC WAS STORED (a) Freeze Frame Data is stored when a DTC is output.
(b) Once Free
Seat belts
Make sure that all occupants are wearing their seat belts before
driving the vehicle.
Correct use of the seat belts
Extend the shoulder belt so that
it comes fully over the shoulder,
but does not come into contact
with the neck or slide off the
shoulder.
Position the lap belt as low
