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 power 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 power 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:

 Terminals Of Ecm

TERMINALS OF ECM HINT: The standard normal voltage and resistance between each pair of ECM terminals is shown in the table below. The appropriate conditions for checking each pair of terminals are also indicated. The result of checks should be compared with the standard normal voltage and resistanc

 Inspection

INSPECTION CAUTION / NOTICE / HINT CAUTION: Be careful so that fingers and clothing do not get caught in the moving parts when performing this test. PROCEDURE 1. INSPECT WINDSHIELD WIPER MOTOR ASSEMBLY (a) Check the HI operation. (1) Connect a positive (+) lead from the auxiliary battery to termi

© 2016-2026 Copyright www.lexguide.net