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

Body Electrical > Wiper > Clear DTCs
NEXT

2.

CHECK FOR DTC

(a) Turn the engine switch on (IG).

(b) Check for DTCs.

Click here

Body Electrical > Wiper > Trouble Codes

Result

Proceed to

DTC B1370 is not output.

A

DTC B1370 is output.

B

A

USE SIMULATION METHOD TO CHECK

B

REPLACE FRONT WIPER MOTOR AND LINK ASSEMBLY

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    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual

    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual

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