| Last Modified: 07-31-2024 | 6.11:8.1.0 | Doc ID: RM1000000026PW6 |
| Model Year Start: 2023 | Model: Corolla HV | Prod Date Range: [09/2022 - ] |
| Title: HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with PA10): U01BD87; Lost Communication with DC/DC Converter Control Module "C" Missing Message; 2023 - 2025 MY Corolla HV [09/2022 - ] | ||
|
DTC |
U01BD87 |
Lost Communication with DC/DC Converter Control Module "C" Missing Message |
DESCRIPTION
The hybrid vehicle control ECU transmits and receives signals via CAN communication to and from the DC/DC converter assembly.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
Warning Indicate |
Note |
|---|---|---|---|---|---|---|
|
U01BD87 |
Lost Communication with DC/DC Converter Control Module "C" Missing Message |
A CAN communication error between the DC/DC converter and hybrid vehicle control ECU (CAN communication system malfunction) occurs (1 trip detection logic) |
CAN communication system |
Does not come on |
Master Warning: Comes on |
SAE Code: U01BD |
CONFIRMATION DRIVING PATTERN
HINT:
After repairs have been completed, clear the DTCs and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
![2023 - 2025 MY Corolla HV [09/2022 - ]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with PA10): UTILITY](/t3Portal/stylegraphics/info.gif)
- Connect the GTS to the DLC3.
- Turn the ignition switch to ON and turn the GTS on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the ignition switch off and wait for 2 minutes or more.
- Turn the ignition switch to ON and turn the GTS on.
- Turn the ignition switch to ON (READY) and wait for 2 minutes or more.
- Enter the following menus: Powertrain / Hybrid Control / Utility / All Readiness.
-
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform driving pattern again.
PROCEDURE
|
1. |
CHECK DTC OUTPUT |
(a) Check for DTCs.
Powertrain > Hybrid Control > Trouble Codes
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