DTC    B241A    Rear Height Control Sensor

for Preparation Click here


DESCRIPTION

The AFS ECU (headlight swivel ECU assembly) receives signals indicating the height of the vehicle from the rear height control sensor sub-assembly.

DTC No.
DTC Detecting Condition
Trouble Area
B241A
  1. Malfunction in rear height control sensor sub-assembly
  2. Open or short in rear height control sensor sub-assembly circuit
  1. Rear height control sensor sub-assembly
  2. Harness or connector
  3. AFS ECU (headlight swivel ECU assembly)

WIRING DIAGRAM


E144299E43


INSPECTION PROCEDURE

NOTICE:
If either of the following is performed, initialization of the AFS ECU (headlight swivel ECU assembly) is necessary (Click here).
  1. Replacement of the AFS ECU (headlight swivel ECU assembly).
  2. Replacement or removal/installation of the rear height control sensor sub-assembly or work that changes the vehicle height such as replacement of suspension components.
1.CHECK FOR DTC

  1. Clear the DTCs (Click here).

  1. Check for DTCs (Click here).

    OK:
    DTC B241A is not output.


NG
Go to step 2
OK

USE SIMULATION METHOD TO CHECK (Click here)  

2.READ VALUE USING INTELLIGENT TESTER

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the intelligent tester on.

  1. Enter the following menus: Body / AFS / Data List.

  1. Read the display on the intelligent tester.

    AFS 
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Height Sens Pw Supply Val
    		Rear height control sensor power supply value / 0.00 to 6.25 V
    		Approx. 5.0 V
    		-
    Rr Height Sens Signal Val
    		Rear height control sensor signal value / 0.00 to 5.00 V
    		Approx. 2.5 V (When the vehicle is level)
    		Value changes according to vehicle height

    OK:
    Normal conditions listed above are displayed.


NG
Go to step 3
OK

REPLACE AFS ECU (HEADLIGHT SWIVEL ECU ASSEMBLY) (Click here)  

3.INSPECT REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY

  1. Remove the rear height control sensor sub-assembly (Click here).

  1. Inspect the rear height control sensor sub-assembly (Click here).



NG
REPLACE REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY (Click here)
OK


4.CHECK HARNESS AND CONNECTOR (AFS ECU (HEADLIGHT SWIVEL ECU ASSEMBLY) - REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY)

  1. Disconnect the A35 AFS ECU (headlight swivel ECU assembly) connector.

  1. Disconnect the O17 rear height control sensor sub-assembly connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    A35-19 (SHRL) - O17-2 (SHRR)
    		Always
    		Below 1 Ω
    A35-19 (SHRL) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE AFS ECU (HEADLIGHT SWIVEL ECU ASSEMBLY) (Click here)