Lexus ES manuals

Lexus ES: 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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 Components

COMPONENTS ILLUSTRATION *1 LUGGAGE COMPARTMENT FLOOR MAT *2 SPARE WHEEL COVER TRAY ILLUSTRATION *1 REAR FLOOR FINISH PLATE *2 LUGGAGE HOLD BELT STRIKER ASSEMBLY ILLUSTRATION *1 LUGGAGE COMPARTMENT DOOR COVER *2 LUGGAGE LOCK CONTROL CABLE PLATE *3 SWITCH BEZE

 Installation

INSTALLATION CAUTION / NOTICE / HINT HINT: Use the same procedure for the RH side and LH side. The following procedure is for the LH side. PROCEDURE 1. INSTALL REAR DOOR ILLUMINATION LIGHT (REAR DOOR OUTSIDE HANDLE ASSEMBLY) Click here 2. INSTALL REAR DOOR SERVICE HOLE COVER Click here 3

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