Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Air Conditioner ECU Vehicle Information Reading/Writing Processor Malfunction (B15F5)
DESCRIPTION
This DTC is stored when items controlled by the air conditioning amplifier assembly cannot be customized via the audio and visual system vehicle customization screen.
HINT:
The air conditioning amplifier assembly controls the air conditioning system related items that are customizable via the multi-display assembly screen.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| B15F5 | Air Conditioner ECU Vehicle Information Reading/Writing Processor Malfunction | Air conditioning amplifier assembly vehicle setting processing malfunction |
|
CAUTION / NOTICE / HINT
NOTICE:
Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Audio and Visual System.
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PROCEDURE
| 1. | CHECK CAN COMMUNICATION SYSTEM |
(a) Use the Techstream to check if the CAN communication system is functioning normally.
Click here
OK:
CAN communication DTCs are not output.
| NG |  | GO TO CAN COMMUNICATION SYSTEM |
|
| 2. | CHECK AIR CONDITIONING SYSTEM |
(a) Check if the air conditioning system is malfunctioning.
Click here
HINT:
Customization may not be possible depending on the malfunction in the air conditioning system.
OK:
No malfunctions are present in the air conditioning system.
| NG | | GO TO AIR CONDITIONING SYSTEM |
|
| 3. | CLEAR DTC |
(a) Clear the DTCs.
Body Electrical > Navigation System > Clear DTCs
|
| 4. | CHECK FOR DTC |
(a) Recheck for DTCs.
Body Electrical > Navigation System > Trouble Codes| Result | Proceed to |
|---|---|
| DTCs are not output | A |
| DTCs are output | B |
| A | | END |
| B | | REPLACE RADIO RECEIVER ASSEMBLY |
Telematics Transceiver Disconnected (B15DB)
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DESCRIPTION This DTC is stored when items controlled by the main body ECU (multiplex network body ECU) cannot be customized via the audio and visual system vehicle customization screen. HINT: The main ...
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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