HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for HV Model): B1474; A/C Inverter Malfunction; 2020 MY RAV4 HV [06/2020

Last Modified: 01-30-2024	6.11:8.1.0	Doc ID: RM100000001PCHB
Model Year Start: 2020	Model: RAV4 HV	Prod Date Range: [06/2020 - 08/2020]
Title: HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for HV Model): B1474; A/C Inverter Malfunction; 2020 MY RAV4 HV [06/2020 - 08/2020]

DTC

B1474

A/C Inverter Malfunction

DESCRIPTION

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Memory
B1474	A/C Inverter Malfunction	Diagnosis condition: Ignition switch ON (READY) Malfunction status: The inverter internal temperature is outside the specified range (exceeds the maximum) Detection time: None	Compressor with motor assembly CAN communication system	Memorized

CAUTION:

Wear insulated gloves and pull out the service plug grip before inspection as procedures may require disconnecting high-voltage connectors. Carry the removed service plug in your pocket to prevent other technicians from accidentally reconnecting it while you are servicing the vehicle.
Do not touch the high-voltage connectors or terminals for 10 minutes after the service plug grip is removed.

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.
- for 2WD:
- for AWD:
- for LITHIUM-ION BATTERY:
The hybrid control system and air conditioning system output DTCs separately. Perform troubleshooting for the hybrid control system first if DTCs from these systems are output simultaneously.

1.	CHECK CAN COMMUNICATION SYSTEM

(a) Using the Techstream, check if the CAN communication system is functioning normally.

Click here

Result	Proceed to
CAN communication system DTCs are not output	A
CAN communication system DTCs are output	B