| Last Modified: 05-08-2025 | 6.11:8.1.0 | Doc ID: RM100000001PCHC |
| Model Year Start: 2020 | Model: RAV4 HV | Prod Date Range: [06/2020 - 08/2020] |
| Title: HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for HV Model): B1475; A/C Inverter Cooling / Heating System Malfunction; 2020 MY RAV4 HV [06/2020 - 08/2020] | ||
|
DTC |
B1475 |
A/C Inverter Cooling / Heating System Malfunction |
DESCRIPTION
The temperature sensor of the compressor with motor assembly detects the A/C inverter temperature.
If the temperature exceeds the maximum, operation of the compressor with motor assembly will be stopped, and this DTC will be stored.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Memory |
|---|---|---|---|---|
|
B1475 |
A/C Inverter Cooling / Heating System Malfunction |
|
|
Memorized |
CAUTION / NOTICE / HINT
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:
![2019 - 2020 MY RAV4 HV [11/2018 - 08/2020]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for 2WD with NICKEL METAL HYDRIDE BATTERY): PRECAUTION](/t3Portal/stylegraphics/info.gif)
-
for AWD:
-
for LITHIUM-ION BATTERY:
-
for 2WD:
- 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.
PROCEDURE
|
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 |
| B |
|
|
|
2. |
PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE ENGINE COOLING FAN DUTY RATIO) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine / Active Test.
(e) Check the operation by referring to the table below.
Powertrain > Engine > Active Test
|
Tester Display |
Measurement Item |
Control Range |
Restrict Condition |
|---|---|---|---|
|
Control the Engine Cooling Fan Duty Ratio |
Electric cooling fan motor operation |
0 to 100 (%) |
Perform this test when vehicle is stopped. |
Powertrain > Engine > Active Test
|
Tester Display |
|---|
|
Control the Engine Cooling Fan Duty Ratio |
OK:
Electric cooling fan operates smoothly.
| NG |
|
|
|
3. |
CHECK REFRIGERANT PRESSURE |
(a) Install a manifold gauge set.
-
for HFC-134a (R134a):
-
for HFO-1234yf (R1234yf):
(b) Turn the ignition switch to ON (READY).
(c) Read the manifold gauge pressure when the following conditions are met.
(1) Prepare the vehicle according to the table below.
Measurement Condition:
|
Item |
Condition |
|---|---|
|
Vehicle Condition |
Ignition switch ON (READY) |
|
Doors |
Fully closed (windows also fully closed) |
|
A/C Switch |
On |
|
Recirculation/fresh Control Switch |
Recirculation |
|
Set Temperature |
MAX COLD |
|
Blower Speed |
HI |
|
Air Conditioning Air Inlet Temperature |
25 to 35°C (77 to 95°F) |
Standard Pressure:
Low pressure side
150 to 250 kPa (1.5 to 2.5 kgf/cm2, 22 to 36 psi)
High pressure side
1370 to 1570 kPa (14 to 16 kgf/cm2, 199 to 228 psi)
| NG |
|
CHARGE REFRIGERANT
|
|
|
4. |
CHECK FOR DTC |
(a) Set the vehicle condition when the DTCs are output.
(1) Set the "Inspection Mode".
Click here
(2) Prepare the vehicle according to the table below for 30 minutes or more.
|
Item |
Condition |
|---|---|
|
Blower Speed |
HI |
|
A/C Switch |
On |
|
Set Temperature |
MAX COLD |
(b) Clear the DTCs.
Click here
Body Electrical > Air Conditioner > Clear DTCs
(c) Turn the ignition switch to ON (READY).
(d) Check for DTCs.
Click here
Body Electrical > Air Conditioner > Trouble Codes
OK:
DTC B1475 is not output
NOTICE:
If the engine keeps idling when the ambient temperature is high, the compressor with motor assembly may automatically stop to protect the inverter circuit, and DTC B1475 may be stored.
| OK |
|
| NG |
|
|
|