Lexus ES manuals

Lexus ES: ECU Malfunction (B1370)

Lexus ES (XZ10) Service Manual / Vehicle Exterior / Wiper / Washer / Wiper And Washer System (for Hv Model) / ECU Malfunction (B1370)

DESCRIPTION

This DTC is stored when the windshield wiper motor assembly detects an internal malfunction.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Memory

DTC Output from

B1370

ECU Malfunction
  • Auxiliary battery voltage is 9.5 V or more
  • A malfunction is detected for during the windshield wiper motor assembly self-check.
  • 10 seconds or more

Windshield wiper motor assembly

○

Windshield wiper motor assembly

PROCEDURE

1.

CLEAR DTC

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Wiper / Trouble Codes.

(e) Clear the DTCs.

Body Electrical > Wiper > Clear DTCs
NEXT

2.

CHECK FOR DTC

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Wait 10 seconds or more.

(d) Turn the Techstream on.

(e) Enter the following menus: Body Electrical / Wiper / Trouble Codes.

(f) Check for DTCs.

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 WINDSHIELD WIPER MOTOR ASSEMBLY

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