DTC B241A: Rear Height Control Sensor [08/2015 - ]: Procedure

1. Clear the DTCs. Refer to DTC CHECK / CLEAR [08/2015 - ] .
2. Check for DTCs. Refer to DTC CHECK / CLEAR [08/2015 - ] .

   OK

   DTC B241A is not output.

NG → Refer to   2 

OK → Refer to   7 

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / HL Auto Leveling / Data List.
5. Read the display on the Techstream.
   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 6.25 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 the vehicle is level)	Value is changed according to vehicle height

   OK

   Normal conditions listed above are displayed.

NG → Refer to   3 

OK → Refer to   5 

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Remove the rear height control sensor sub-assembly. Refer to REMOVAL [08/2015 - ] .
3. Connect the positive (+) lead from the batteries to terminal 3 (SHB) and the negative (-) lead from the batteries to terminal 1 (SHG).
4. Measure the voltage between terminals 2 (SHRR) and 1 (SHG) while slowly moving the link up and down.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   2 (SHRR) - 1 (SHG)	+45° (High)	3.6 to 4.4 V
   	0° (Normal)	2.0 to 2.4 V
   	-35° (Low)	0.8 to 1.0 V

   TEXT IN ILLUSTRATION
   
   

   *a	Component with harness connected (Rear Height Control Sensor Sub-assembly)
   *b	(Low)
   *c	Standard position
   *d	(High)

NG → Refer to   6 

OK: Go to next step 

1. Disconnect the A48 headlight leveling ECU assembly connector.
2. Disconnect the S3 rear height control sensor sub-assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A48-12 (SBR) - S3-3 (SHB)	Always	Below 1 Ω
   A48-19 (SHRL) - S3-2 (SHRR)	Always	Below 1 Ω
   A48-21 (SGR) - S3-1 (SHG)	Always	Below 1 Ω
   A48-12 (SBR) - Body ground	Always	10 kΩ or higher
   A48-19 (SHRL) - Body ground	Always	10 kΩ or higher
   A48-21 (SGR) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → Refer to   5