Last Modified: 07-31-2024 |
6.11:8.1.0 |
Doc ID: RM100000001N40B |
Model Year Start: 2021 |
Model: Corolla |
Prod Date Range: [04/2020 - 09/2022] |
Title: HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with P610): U042481; HVAC Control Module to Hybrid Powertrain Control Module Invalid Serial Data Received; 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022] |
DTC
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U042481
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HVAC Control Module to Hybrid Powertrain Control Module Invalid Serial Data Received
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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.
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Detection Item
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DTC Detection Condition
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Trouble Area
|
MIL
|
Warning Indicate
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U042481
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HVAC Control Module to Hybrid Powertrain Control Module Invalid Serial Data Received
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Invalid control request received from the air conditioning amplifier assembly
(1 trip detection logic)
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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
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Connect the Techstream to the DLC3.
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Turn the power switch on (IG) and turn the Techstream on.
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Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
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Turn the power switch off and wait for 2 minutes or more.
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Turn the power switch on (IG) and turn the Techstream on.
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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).
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Turn the air conditioning system off and wait for 10 seconds or more with the power switch on (READY).
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Enter the following menus: Powertrain / Hybrid Control / Utility / All Readiness.
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Check the DTC judgment result.
HINT:
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If the judgment result shows NORMAL, the system is normal.
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If the judgment result shows ABNORMAL, the system has a malfunction.
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If the judgment result shows INCOMPLETE or N/A, perform driving pattern again.
PROCEDURE
1.
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CHECK DTC OUTPUT (AIR CONDITIONER)
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(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
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Proceed to
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No DTCs are output
|
A
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DTCs are output
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B
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(e) Turn the power switch off.
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