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
|
|
.gif)
| 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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Repair
REPAIR CAUTION / NOTICE / HINT
HINT:
Use the same procedure for bank 1 and bank 2.
The following procedure is for bank 2.
PROCEDURE 1. REPAIR INTAKE VALVE SEAT
NOTICE:
Repair the intake valve seat while checking the seating position.
Release the cutter gradually to make the i
