DTC B241B: Front Height Control Sensor (To 08/2009): Procedure

1. Clear the DTCs. Refer to DTC CHECK / CLEAR .
2. Check for DTCs. Refer to DTC CHECK / CLEAR .

   OK

   DTC B241B is not output.

NG → See step   2 

OK → See step   8 

1. Check for DTCs. Refer to DTC CHECK / CLEAR .

   OK

   DTC "C1712/12 Front Height Control Sensor LH Circuit Malfunction" is not output.

NG → See step   9 

OK: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Enter the following menus: Body Electrical / AFS / Data List.
4. Read the display on the Techstream.
   AFS
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Height Sens Pw Supply Val	Height control sensor power supply value / 0 to 6.25 V	Approx. 5.0 V	-
   Fr Height Sens Signal Val	Front height control sensor signal value / 0 to 5 V	Approx. 2.5 V (When the vehicle is level)	Value is changed according to vehicle height

   OK

   Normal conditions listed above are displayed.

NG → See step   5 

OK: Go to next step 

1. Temporarily replace the suspension control ECU with a new or normally functioning one. Refer to COMPONENTS .
2. Check for DTCs. Refer to DTC CHECK / CLEAR .

   OK

   DTC B241B is not output.

NG → See step   7 

OK → END 

1. Disconnect the A53 AFS ECU (headlight swivel ECU assembly) connector.
   Fig 1: Identifying A53 AfS ECU (Headlight Swivel ECU Assembly) & A55 Suspension Control ECU Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the A55 suspension control ECU connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A53-17 (SHFL) - A55-23 (SHF2)	Always	Below 1 Ω
   A53-18 (SBR) - A55-22 (SHB5)	Always	Below 1 Ω
   A53-21 (SGR) - A55-21 (SHG5)	Always	Below 1 Ω
   A53-17 (SHFL) - Body ground	Always	10 kΩ or higher
   A53-18 (SBR) - Body ground	Always	10 kΩ or higher
   A53-21 (SGR) - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to AFS ECU (Headlight Swivel ECU Assembly))
   *2	Front view of wire harness connector (to Suspension Control ECU)

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Temporarily replace the suspension control ECU with a new or normally functioning one. Refer to COMPONENTS .
2. Check for DTCs. Refer to DTC CHECK / CLEAR .

   OK

   DTC B241B is not output.

NG → See step   7 

OK → END