Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: ECU Malfunction (B1370)
DESCRIPTION
This DTC is stored when the front wiper motor and link assembly (wiper ECU) detects an internal malfunction.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Memory | DTC Output from |
|---|---|---|---|---|---|
| B1370 | ECU Malfunction | When the battery voltage is 9.5 V or more, a malfunction is detected for 10 seconds or more during the wiper ECU self-check. | Front wiper motor and link assembly | ○ | Front wiper motor and link assembly |
PROCEDURE
| 1. | CLEAR DTC |
(a) Clear the DTCs.
Click here .gif)
|
.gif)
| 2. | CHECK FOR DTC |
(a) Turn the engine switch on (IG).
(b) Check for DTCs.
Click here
| Result | Proceed to |
|---|---|
| DTC B1370 is not output. | A |
| DTC B1370 is output. | B |
| A | .gif) | USE SIMULATION METHOD TO CHECK |
| B | | REPLACE FRONT WIPER MOTOR AND LINK ASSEMBLY |
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DESCRIPTION Under normal operation, the front wiper motor and link assembly (wiper ECU) receives operation signals from the windshield wiper switch assembly via LIN communication. The windshield front ...
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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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