HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for HV Model): HOW TO PROCEED WITH TROUBLESHOOTING; 2021 - 2024 MY RAV4 HV [08/2020

Last Modified: 01-30-2024	6.11:8.1.0	Doc ID: RM100000001RWHZ
Model Year Start: 2021	Model: RAV4 HV	Prod Date Range: [08/2020 - ]
Title: HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for HV Model): HOW TO PROCEED WITH TROUBLESHOOTING; 2021 - 2024 MY RAV4 HV [08/2020 - ]

HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

HINT:

Use the following procedure to troubleshoot the air conditioning system.
*: Use the Techstream.

PROCEDURE

1.	VEHICLE BROUGHT TO WORKSHOP

2.	CUSTOMER PROBLEM ANALYSIS

HINT:

In troubleshooting, in order to check the problem symptoms accurately and judge correctly, avoid having any preconceptions. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.
Gather as much information as possible for reference. Past malfunctions that seem unrelated may also help in some cases.

The following 5 items are important points for problem analysis:

What	Vehicle model, system name
When	Date and time, frequency, whether the problem occurred recently or has been occurring for a long time
Where	Whether the problem occurs at specified place
Under what conditions?	Whether the doors were locked or unlocked, whether the ignition switch to ON, whether the engine was running
How did it happen?	Ask the customer for details about the vehicle operating conditions, environment and malfunction.

3.	INSPECT AUXILIARY BATTERY VOLTAGE

(a) Inspect the auxiliary battery voltage with the ignition switch off.

Standard voltage:

11 to 14 V

HINT:

A simple method to determine whether the auxiliary battery is depleted is to operate the horn.

If the auxiliary voltage is below 11 V, recharge or replace the auxiliary battery before proceeding to the next step.

(b) Check the fuses and relays.

(c) Check the connector connections and terminals to make sure that there are no abnormalities such as loose connections, deformation, etc.

(d) Using the Techstream, check the Data List item "Operation Limitation Control History Count".

Click here

Body Electrical > Air Conditioner > Data List

Tester Display
Operation Limitation Control History Count (Level1)
Operation Limitation Control History Count (Level2)

HINT:

If a value other than zero is displayed for "Operation Limitation Control History Count (Level1)" or "Operation Limitation Control History Count (Level2)", air conditioning system operation may have been limited in the past. If the operation is still limited, the message "High Power Consumption Partial Limit on AC/Heater Operation" will be displayed on the multi-information display in the combination meter assembly. In this case, inspect the charging system.

Click here

4.	CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

(a) Using the Techstream, check for CAN communication system DTCs.

Click here

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

GO TO CAN COMMUNICATION SYSTEM

5.	CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*

(a) Using the Techstream, check for LIN communication system DTCs.

Click here

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

GO TO LIN COMMUNICATION SYSTEM

6.	CHECK FOR DTC* (HYBRID CONTROL SYSTEM)

(a) Check for DTCs and note any codes that are output.

for AWD:
for LITHIUM-ION BATTERY:

Powertrain > Hybrid Control > Trouble Codes

(b) Clear the DTCs.

for AWD:
for LITHIUM-ION BATTERY:

Powertrain > Hybrid Control > Clear DTCs

(c) Recheck for DTCs. Based on the DTCs output above, try to force output of the air conditioning system DTC by simulating the operation indicated by the DTC.

for AWD:
for LITHIUM-ION BATTERY:

Powertrain > Hybrid Control > Trouble Codes

Result	Proceed to
DTCs are not output	A
DTCs are output	B

GO TO HYBRID CONTROL SYSTEM

for AWD:
for LITHIUM-ION BATTERY:

7.	CHECK FOR DTC*

(a) Check for DTCs and note any codes that are output.

Click here

Body Electrical > Air Conditioner > Trouble Codes

(b) Clear the DTCs.

Click here

Body Electrical > Air Conditioner > Clear DTCs

(c) Recheck for DTCs. Based on the DTCs output above, try to force output of the air conditioning system DTC by simulating the operation indicated by the DTC.

Click here

Body Electrical > Air Conditioner > Trouble Codes

Result	Proceed to
DTCs are not output	A
DTCs are output	B

GO TO DIAGNOSTIC TROUBLE CODE CHART

8.	CHECK AIR CONDITIONING CONTROL ASSEMBLY

(a) Operate each switch on the air conditioning control assembly to check that the air conditioning system operates normally.

Result	Proceed to
Air conditioning system operates normally	A
Air conditioning system does not operate normally	B