| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM100000001GCLB |
| Model Year Start: 2020 | Model: Corolla | Prod Date Range: [01/2019 - 09/2022] |
| Title: HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY): U042481; HVAC Control Module to Hybrid Powertrain Control Module Invalid Serial Data Received; 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022] | ||
|
DTC |
U042481 |
HVAC Control Module to Hybrid Powertrain Control Module Invalid Serial Data Received |
DESCRIPTION
If the hybrid vehicle control ECU receives an invalid compressor control request from the air conditioning amplifier assembly via CAN communication, it will store this DTC.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
Warning Indicate |
|---|---|---|---|---|---|
|
U042481 |
HVAC Control Module to Hybrid Powertrain Control Module Invalid Serial Data Received |
Invalid control request received from the air conditioning amplifier assembly (1 trip detection logic) |
Air conditioning amplifier assembly |
Does not come on |
Master Warning: Does not come on |
CONFIRMATION DRIVING PATTERN
HINT:
After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
![2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY): UTILITY](/t3Portal/stylegraphics/info.gif)
- Connect the Techstream to the DLC3.
- Turn the power switch on (IG) and turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the power switch off and wait for 2 minutes or more.
- Turn the power switch on (IG) and turn the Techstream on.
- Wait for 1 minute or more with the vehicle stopped, the power switch on (READY), shift lever in P and the air conditioning system on (Lo/COOL MAX, blower speed HI).
- Turn the air conditioning system off and wait for 10 seconds or more with the power switch on (READY).
- 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 (AIR CONDITIONER) |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Enter the following menus: Body Electrical / Air Conditioner / Trouble Codes.
(d) Check for DTCs.
Body Electrical > Air Conditioner > Trouble Codes
Result |
Proceed to |
|---|---|
|
No DTCs are output |
A |
|
DTCs are output |
B |
(e) Turn the power switch off.
| A |
|
| B |
|
GO TO DTC CHART (AIR CONDITIONING SYSTEM)
|
|
|