Lexus ES: Communication Error from VSC to ECM Invalid Serial Data Received (P163081)
DESCRIPTION
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 | MIL | 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. |
| Does not come on | Engine |
CAUTION / NOTICE / HINT
NOTICE:
Before replacing the ECM, refer to Registration.
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PROCEDURE
| 1. | CHECK FOR DTCs |
(a) Check for electronically controlled brake system DTCs.
Chassis > Brake/EPB > Trouble Codes| Result | Proceed to |
|---|---|
| Electronically controlled brake system DTCs are not output | A |
| Electronically controlled brake system DTCs are output | B |
| B | .gif) | GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM |
|
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| 2. | CHECK FOR DTCs |
(a) Clear the DTCs.
Powertrain > Radar Cruise1 > 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 > Radar Cruise1 > Trouble Codes| Result | Proceed to |
|---|---|
| DTC P163081 is not output | A |
| DTC P163081 is output | B |
| A | | USE SIMULATION METHOD TO CHECK |
| B | | REPLACE ECM |
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Communication Error from VSC to ECM Invalid Serial Data Received (P163081)
DESCRIPTION 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
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 actuat
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 actuat
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Operation Method
OPERATION METHOD PROCEDURE 1. PRECAUTION Click here 2. TURN BACK LUGGAGE COMPARTMENT TRIM COVER RH (a) Turn back the luggage compartment trim cover RH as shown in the illustration. Remove in this Direction 3. SEPARATE REAR SEAT CUSHION ASSEMBLY Click here 4. REMOVE REAR SEAT CUSHION
Data List / Active Test
DATA LIST / ACTIVE TEST NOTICE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not. The actual values may differ from the values listed in the chart under "Reference Value"
