Lexus ES manuals

Lexus ES: 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 Sensor Malfunction

  • IG power source voltage is 9.5 V or more
  • Either of the following is detected
    • Rain sensor internal thermistor malfunction detected for 10 seconds or more
    • LED output malfunction detected for 2 seconds or more

Rain sensor

Rain sensor

PROCEDURE

1.

CLEAR DTC

(a) Connect the Techstream to the DLC3.

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

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Rain and/or Humidity Sensor / Trouble Codes.

(e) Clear the DTCs.

Body Electrical > Rain and/or Humidity Sensor > Clear DTCs
NEXT

2.

CHECK FOR DTC

(a) Connect the Techstream to the DLC3.

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

(c) Wait 10 seconds or more.

(d) Turn the Techstream on.

(e) Enter the following menus: Body Electrical / Rain and/or Humidity Sensor / Trouble Codes.

(f) Check for DTCs.

Body Electrical > Rain and/or Humidity Sensor > Trouble Codes

Result

Proceed to

DTC B1400 is not output

A

DTC B1400 is output

B

A

USE SIMULATION METHOD TO CHECK

B

REPLACE RAIN SENSOR

READ NEXT:

 Wiper Motor Power Source Circuit

DESCRIPTION This circuit is the power source circuit for the windshield wiper motor assembly. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Inspect the fuses of circuits related to this system be

 Wiper and Washer Switch Circuit

DESCRIPTION The condition of the windshield wiper switch assembly is detected and sent to the steering sensor in this circuit. WIRING DIAGRAM PROCEDURE 1. READ VALUE USING TECHSTREAM (a) Con

 Washer Motor Circuit

DESCRIPTION When the windshield washer motor and pump assembly receives signals from the windshield wiper switch assembly it operates to spray washer fluid from the washer nozzle sub-assemblies. WIRIN

SEE MORE:

 Reassembly

REASSEMBLY PROCEDURE 1. INSTALL STEERING LOCK ACTUATOR ASSEMBLY NOTICE: After replacing the steering lock actuator assembly, perform registration. (a) Secure the steering column assembly in a vise between aluminum plates. NOTICE: Do not overtighten the vise. (b) Temporarily install the steering lock

 System Description

SYSTEM DESCRIPTION GENERAL The windshield deicer system uses thin heater wires attached to the inside of the windshield glass to help deice the window surface more quickly. An indicator light illuminates while the system is operating. This system automatically turns off after approximately 15 minute

© 2016-2026 Copyright www.lexguide.net