Dtc B2416 Height Control Sensor Malfunction

Body Electrical. Lexus Is250, Is220D. Gse20 Ale20
Lighting. Lexus Is250, Is220D. Gse20 Ale20

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE OF INTELLIGENT TESTER

CHECK HARNESS AND CONNECTOR (FRONT HEIGHT CONTROL SENSOR CIRCUIT)

CHECK HARNESS AND CONNECTOR (REAR HEIGHT CONTROL SENSOR CIRCUIT)

CHECK HARNESS AND CONNECTOR (AFS ECU - FRONT HEIGHT CONTROL SENSOR)

CHECK HARNESS AND CONNECTOR (AFS ECU - REAR HEIGHT CONTROL SENSOR)

INSPECT HEIGHT CONTROL SENSOR (FRONT HEIGHT CONTROL SENSOR)

INSPECT HEIGHT CONTROL SENSOR (REAR HEIGHT CONTROL SENSOR)

CHECK HARNESS AND CONNECTOR (AFS ECU - FRONT HEIGHT CONTROL SENSOR)

CHECK HARNESS AND CONNECTOR (AFS ECU - REAR HEIGHT CONTROL SENSOR)

DTC B2416 Height Control Sensor Malfunction


DESCRIPTION

The AFS ECU receives signals regarding the height of the front/rear of the vehicle from the height control sensor.

DTC No.
DTC Detection Condition
Trouble Area
B2416
  1. Malfunction in height control sensor
  2. Open or short in vehicle height sensor circuit
  1. Height control sensor
  2. Wire harness or connector
  3. AFS ECU

WIRING DIAGRAM


Lexus Is250, Is220D. Gse20 Ale20.Lighting.Lighting System. Dtc B2416 Height Control Sensor Malfunction


INSPECTION PROCEDURE

1.READ VALUE OF INTELLIGENT TESTER

  1. Connect the intelligent tester to the DLC3.

  1. Turn the engine switch on (IG).

  1. Turn the intelligent tester main switch on.

  1. Select the "DATA LIST" on the intelligent tester, and read the displays on the intelligent tester.

    DATA LIST: AFS (AFS ECU)
    Item
    		Measurement Item / Display (Range)
    		Normal Condition
    		Diagnostic Note
    Fr Height Sens Signal Val
    		Front height sensor signal value / 0 to 5 V
    		Approx. 2.5 V
    		-
    Rr Height Sens Signal Val
    		Rear height sensor signal value / 0 to 5 V
    		Approx. 2.5 V
    		-
    OK:
    Condition sign can be displayed.

    Result:

    Result
    		Proceed to
    OK (When checking from PROBLEM SYMPTOMS TABLE)
    		A
    OK (When checking from DIAGNOSTIC TROUBLE CODE CHART)
    		B
    NG
    		C


B
REPLACE AFS ECU

C
Go to step 2
A

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

2.CHECK HARNESS AND CONNECTOR (FRONT HEIGHT CONTROL SENSOR CIRCUIT)


    Lexus Is250, Is220D. Gse20 Ale20.Lighting.Lighting System. Dtc B2416 Height Control Sensor Malfunction

  1. Disconnect the A17 front height control sensor connector.

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

    Standard voltage:
    Tester Connection
    		Condition
    		Specified Condition
    A17-1 (SHG) - A17-3 (SHB)
    		Engine switch on (IG)
    		4.5 to 5.5 V


NG
Go to step 8
OK


3.CHECK HARNESS AND CONNECTOR (REAR HEIGHT CONTROL SENSOR CIRCUIT)


    Lexus Is250, Is220D. Gse20 Ale20.Lighting.Lighting System. Dtc B2416 Height Control Sensor Malfunction

  1. Disconnect the Y2 rear height control sensor connector.

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

    Standard voltage:
    Tester Connection
    		Condition
    		Specified Condition
    Y2-1 (SHG) - Y2-3 (SHB)
    		Engine switch on (IG)
    		4.5 to 5.5 V


NG
Go to step 9
OK


4.CHECK HARNESS AND CONNECTOR (AFS ECU - FRONT HEIGHT CONTROL SENSOR)


    Lexus Is250, Is220D. Gse20 Ale20.Lighting.Lighting System. Dtc B2416 Height Control Sensor Malfunction

  1. Disconnect the A28 AFS ECU connector.

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    A28-2 (SHFL) - A17-2 (SHFL)
    		Always
    		Below 1 Ω
    A28-2 (SHFL) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


5.CHECK HARNESS AND CONNECTOR (AFS ECU - REAR HEIGHT CONTROL SENSOR)


    Lexus Is250, Is220D. Gse20 Ale20.Lighting.Lighting System. Dtc B2416 Height Control Sensor Malfunction

  1. Disconnect the Y2 sensor connector.

  1. Disconnect the A27 AFS ECU connector.

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    A27-9 (SHRL) - Y2-2 (SHRL)
    		Always
    		Below 1 Ω
    A27-9 (SHRL) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


6.INSPECT HEIGHT CONTROL SENSOR (FRONT HEIGHT CONTROL SENSOR)


    Lexus Is250, Is220D. Gse20 Ale20.Lighting.Lighting System. Dtc B2416 Height Control Sensor Malfunction

  1. Connect 3 dry cell batteries (1.5 V) in series.

  1. Remove the height control sensor assembly front.

  1. Connect the positive (+) lead from the battery to terminal 3 and the negative (-) lead from the battery to terminal 1.

  1. Measure the voltage between terminals 2 and 1 while slowly moving the link up and down.

    Standard voltage:
    Tester Connection
    		Condition
    		Specified Condition
    A17-2 (SHFL) - A17-1 (SHG)
    		+45°
    		Approx. 4.5 V
    A17-2 (SHFL) - A17-1 (SHG)
    		0° (Normal)
    		Approx. 2.5 V
    A17-2 (SHFL) - A17-1 (SHG)
    		-45° (Low)
    		Approx. 0.5 V


NG
REPLACE HEIGHT CONTROL SENSOR (FRONT HEIGHT CONTROL SENSOR)
OK


7.INSPECT HEIGHT CONTROL SENSOR (REAR HEIGHT CONTROL SENSOR)


    Lexus Is250, Is220D. Gse20 Ale20.Lighting.Lighting System. Dtc B2416 Height Control Sensor Malfunction

  1. Connect 3 dry cell batteries (1.5 V) in series.

  1. Remove the height control sensor assembly rear.

  1. Connect the positive (+) lead from the battery to terminal 3 and the negative (-) lead from the battery to terminal 1.

  1. Measure the voltage between terminals 2 and 1 while slowly moving the link up and down.

    Standard voltage:
    Tester Connection
    		Condition
    		Specified Condition
    Y2-2 (SHRL) - Y2-1 (SHG)
    		+45°
    		Approx. 4.5 V
    Y2-2 (SHRL) - Y2-1 (SHG)
    		0° (Normal)
    		Approx. 2.5 V
    Y2-2 (SHRL) - Y2-1 (SHG)
    		-45° (Low)
    		Approx. 0.5 V


NG
REPLACE HEIGHT CONTROL SENSOR (REAR HEIGHT CONTROL SENSOR)
OK

REPLACE AFS ECU

8.CHECK HARNESS AND CONNECTOR (AFS ECU - FRONT HEIGHT CONTROL SENSOR)


    Lexus Is250, Is220D. Gse20 Ale20.Lighting.Lighting System. Dtc B2416 Height Control Sensor Malfunction

  1. Disconnect the A17 front height control sensor connector.

  1. Disconnect the A28 AFS ECU connector.

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    A28-1 (SBF) - A17-3 (SHB)
    		Always
    		Below 1 Ω
    A28-2 (SHFL) - A17-2 (SHFL)
    		Always
    		Below 1 Ω
    A28-17 (SGF) - A17-1 (SHG)
    		Always
    		Below 1 Ω
    A28-1 (SBF) - Body ground
    		Always
    		10 kΩ or higher
    A28-2 (SHFL) - Body ground
    		Always
    		10 kΩ or higher
    A28-17 (SGF) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (AFS ECU - FRONT HEIGHT CONTROL SENSOR)
OK

REPLACE AFS ECU

9.CHECK HARNESS AND CONNECTOR (AFS ECU - REAR HEIGHT CONTROL SENSOR)


    Lexus Is250, Is220D. Gse20 Ale20.Lighting.Lighting System. Dtc B2416 Height Control Sensor Malfunction

  1. Disconnect the Y2 sensor connector.

  1. Disconnect the A27 AFS ECU connector.

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    A27-10 (SBR) - Y2-3 (SHB)
    		Always
    		Below 1 Ω
    A27-9 (SHRL) - Y2-2 (SHFL)
    		Always
    		Below 1 Ω
    A27-20 (SGR) - Y2-1 (SHG)
    		Always
    		Below 1 Ω
    A27-10 (SBR) - Body ground
    		Always
    		10 kΩ or higher
    A27-9 (SHRL) - Body ground
    		Always
    		10 kΩ or higher
    A27-20 (SGR) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (AFS ECU - REAR HEIGHT CONTROL SENSOR)
OK

REPLACE AFS ECU