Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: A/C Inverter Component Internal Failure (B147496)

Toyota Corolla Cross (2022-2024) Service Manual / Vehicle Interior / Heating / Air Conditioning / Air Conditioning System (for Hev Model) / A/C Inverter Component Internal Failure (B147496)

DESCRIPTION

If abnormal current in the A/C inverter output high voltage output circuit or a malfunction of temperature sensor in the compressor with motor assembly is detected, compressor control will be stopped and this DTC will be stored.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Memory

B147496

A/C Inverter Component Internal Failure

Diagnosis Condition:

  • READY ON

Malfunction Status:

  • Abnormal current in the A/C inverter output high voltage output circuit
  • Temperature sensor in the compressor with motor assembly malfunction

Detection Time:

  • None

Compressor with motor assembly

Memorized
DTC Detection Condition Combination Table
 

Vehicle Condition

Pattern 1

Pattern 2

Diagnosis Condition

READY ON

○

○

Malfunction

Abnormal current in the A/C inverter output high voltage output circuit

○

-

Temperature sensor in the compressor with motor assembly malfunction

-

○

Detection Time

-

-

Trip Count

1 trip

1 trip

HINT:

If the conditions of either of these patterns are detected, a DTC will be stored

CAUTION / NOTICE / HINT

CAUTION:

  • Before inspecting the high-voltage system, take safety precautions such as wearing insulated gloves and removing the service plug grip to prevent electrical shocks. After removing the service plug grip, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.

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  • Do not touch the high-voltage connectors or terminals for 10 minutes after the service plug grip is removed.

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NOTICE:

  • After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.

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  • When the cable is disconnected from the negative (-) auxiliary battery terminal, the memory of various systems will be cleared. Because of this, be sure to make a record of the contents memorized in each system before starting work. When work is finished, adjust each system to its previous state.
  • The hybrid control system and air conditioning system output DTCs separately. Perform troubleshooting for the hybrid control system first if DTCs for both systems are output simultaneously.

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  • The air conditioning system uses the CAN communication system. Inspect the communication functions by following How to Proceed with Troubleshooting. Troubleshoot the air conditioning system after confirming that the communication systems are functioning properly.

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PROCEDURE

1.

REPLACE COMPRESSOR WITH MOTOR ASSEMBLY

(a) Replace the compressor with motor assembly.

HINT:

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NOTICE:

As this DTC is stored when the compressor with motor assembly is malfunctioning, it is necessary to replace the compressor with motor assembly.

NEXT

END

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