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

READ NEXT:

 Wiper Switch Signal Mismatch between LIN and Line (B1372)

DESCRIPTION Under normal operation, the windshield wiper motor assembly receives operation signals from the windshield wiper switch assembly via LIN communication. The windshield wiper motor assembly

 Lost Communication with Wiper System LIN BUS (B1373)

DESCRIPTION The main body ECU (multiplex network body ECU) and windshield wiper motor assembly communicate via LIN communication. The main body ECU (multiplex network body ECU) stores this DTC if comm

 Rain Sensor Malfunction (B1400)

DESCRIPTION This DTC is stored when the rain sensor detects an internal malfunction. DTC No. Detection Item DTC Detection Condition Trouble Area Memory DTC Output from B1400 Rain Se

SEE MORE:

 Inspection

INSPECTION PROCEDURE 1. INSPECT FUEL LID OPENER SWITCH (TRUNK AND FUEL SWITCH ASSEMBLY) (a) Check the switch. (1) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Condition Specified Condition 2 (B) - 3 (L) Pressed (On) Be

 Cruise Control System Internal Failure (P057504,P057549)

DESCRIPTION When the hybrid vehicle control ECU detects an internal malfunction, DTC P057504 or P057549 is stored. DTC No. Detection Item DTC Detection Condition Trouble Area MIL DTC Output from P057504 Cruise Control System Internal Failure When the dynamic radar cruise control

© 2016-2024 Copyright www.lexguide.net