| Last Modified: 08-21-2023 | 6.11:8.1.0 | Doc ID: RM100000001B56Q |
| Model Year Start: 2019 | Model: Avalon HV | Prod Date Range: [04/2018 - 08/2021] |
| Title: CRUISE CONTROL: DYNAMIC RADAR CRUISE CONTROL SYSTEM (for HV Model): C1A52; Driving Support ECU Communication Abnormal; 2019 - 2021 MY Avalon HV [04/2018 - 08/2021] | ||
|
DTC |
C1A52 |
Driving Support ECU Communication Abnormal |
DESCRIPTION
The DTC C1A52 is stored when the Hybrid vehicle control ECU cannot recognize the driving support ECU assembly.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
|---|---|---|---|---|
|
C1A52 |
Driving Support ECU Communication Abnormal |
Approximately 17 seconds after the power switch is turned on (IG), the Hybrid vehicle control ECU cannot recognize the driving support ECU assembly for approximately 1.3 seconds or more. |
Hybrid vehicle control ECU |
Does not come on |
CAUTION / NOTICE / HINT
NOTICE:
Before replacing the hybrid vehicle control ECU, refer to Registration.
Click here
![2019 - 2020 MY Avalon HV [04/2018 - 08/2020]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, HV Model): REGISTRATION](/t3Portal/stylegraphics/info.gif)
PROCEDURE
|
1. |
CHECK FOR DTCs |
(a) Clear the DTCs.
Powertrain > Radar Cruise2 > 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 Cruise2 > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
DTC C1A52 is not output |
A |
|
DTC C1A52 is output |
B |
| A |
|
| B |
|
|
|