Last Modified: 11-20-2023 6.11:8.1.0 Doc ID: RM100000001RX0V
Model Year Start: 2021 Model: Camry HV Prod Date Range: [10/2020 -           ]
Title: CRUISE CONTROL: DYNAMIC RADAR CRUISE CONTROL SYSTEM: P163081; Communication Error from VSC to ECM Invalid Serial Data Received; 2021 - 2024 MY Camry HV [10/2020 -        ]

DTC

P163081

Communication Error from VSC to ECM Invalid Serial Data Received

DESCRIPTION

The skid control ECU (brake booster with master cylinder assembly) sends signals such as brake request signals to the hybrid vehicle control ECU assembly. If an abnormal signal is detected, the hybrid vehicle control ECU assembly 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 hybrid vehicle control ECU assembly detects abnormal data sent from the skid control ECU (brake booster with master cylinder assembly) for approximately 1 second or more.
  • Electronically controlled brake system
  • Hybrid vehicle control ECU assembly

Radar Cruise1

CAUTION / NOTICE / HINT

NOTICE:

Before replacing the hybrid vehicle control ECU assembly, refer to Registration.

Click here 2020 - 2022 MY Camry HV [09/2019 - 08/2022]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function): REGISTRATION 2023 - 2024 MY Camry HV [08/2022 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function): REGISTRATION

PROCEDURE

1.

CHECK FOR DTCs (ELECTRONICALLY CONTROLLED BRAKE SYSTEM)

(a) Check for electronically controlled brake system DTCs.

Chassis > ABS/VSC/TRAC > Trouble Codes

Result

Proceed to

Electronically controlled brake system DTCs are not output

A

Electronically controlled brake system DTCs are output

B
B

GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM

A

2.

CHECK FOR DTCs (Radar Cruise1)

(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 2021 MY Camry HV [10/2020 - 08/2021]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING 2022 - 2024 MY Camry HV [08/2021 -        ]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING

B

REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY