Dtc B2416 Height Control Sensor Malfunction

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK FOR DTC

READ VALUE USING INTELLIGENT TESTER (REAR HEIGHT CONTROL SENSOR)

CHECK HARNESS AND CONNECTOR (HEADLIGHT LEVELING ECU ASSEMBLY - REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY LH)

INSPECT REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY LH

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

HINT:

After replacing the headlight leveling ECU and rear height control sensor, initialization of the ECU is necessary (Toyota Fortuner RM000002CE402CX.html).

1. Clear the DTCs (Toyota Fortuner RM000002WP401BX.html).
   

2. Check for DTCs (Toyota Fortuner RM000002WP401BX.html).
   

   OK:

   DTC B2416 or B241A output does not occur.
   

1. Using the intelligent tester, read the Data List (Toyota Fortuner RM000000PKV08JX.html).
   
   

   HL Auto Leveling

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Height Sens Pw Supply Val	Rear height control sensor power supply value / 0 to 5 V	Approximately 5.0 V	-
   Rr Height Sens Signal Val	Rear height control sensor signal value / 0 to 5 V	Approximately 2.5 V (When vehicle level)	The value changes according to the vehicle height.

   OK:

   The display is as specified in the normal condition column.
   

1. Disconnect the H17 headlight leveling ECU connector.
   

2. Disconnect the R22 rear height control sensor connector.
   

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   H17-12 (SBR) - R22-3 (SHB)	Always	Below 1 Ω
   H17-19 (SHRL) - R22-2 (SHRR)	Always	Below 1 Ω
   H17-21 (SGR) - R22-1 (SHG)	Always	Below 1 Ω
   H17-12 (SBR) - Body ground	Always	10 kΩ or higher
   H17-19 (SHRL) - Body ground	Always	10 kΩ or higher
   H17-21 (SGR) - Body ground	Always	10 kΩ or higher

1. Remove the rear height control sensor (Toyota Fortuner RM000003QK100EX.html).
   

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

3. Connect the positive (+) end of the batteries to terminal 3 (SHB) of the rear height control sensor and the negative (-) end of the batteries to terminal 1 (SHG). While slowly moving the sensor link up and down, measure the voltage between terminal 2 (SHRR) and terminal 1 (SHG).
   

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

   Standard Voltage:

   Tester Connection	Condition	Specified Condition
   2 (SHRR) - 1 (SHG)	High (+)	4.34 to 4.6 V
   	Normal	3.0 to 3.3 V
   	Low (-)	0.4 to 0.66 V

   Text in Illustration

   *a	Low (-)
   *b	43°
   *c	Normal
   *d	105.7°
   *e	High (+)

   NOTICE:

   1. Do not apply a voltage of more than 6 V.
      
   2. Do not drop the height control sensor. If it is dropped, replace it with a new one.