AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM, Diagnostic DTC:B2416 and B241A
| DTC Code | DTC Name |
|---|---|
| B2416 | Height Control Sensor Malfunction |
| B241A | Rear Height Control Sensor |
DESCRIPTION
The headlight leveling ECU receives signals indicating the height of the vehicle from the rear height control sensor.
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
B2416 |
Height Control Sensor Malfunction |
|
|
B241A |
Rear Height Control Sensor |
|
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
After replacing the headlight leveling ECU and rear height control sensor, initialization of the ECU is necessary.
PROCEDURE
CHECK FOR DTC
Clear the DTCs.
Body Electrical > HL AutoLeveling > Clear DTCs
Check for DTCs.
Body Electrical > HL AutoLeveling > Trouble Codes
Result
Proceed to
DTC B2416 or B241A output does not occur
DTC B2416 or B241A output occurs
DTC B2416 or B241A output does not occur USE SIMULATION METHOD TO CHECK
READ VALUE USING GTS (REAR HEIGHT CONTROL SENSOR)
Using the GTS, read the Data List.
Body Electrical > HL AutoLeveling > Data List
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 becomes larger when the front of the vehicle tilts up.
Body Electrical > HL AutoLeveling > Data List
Tester Display
Height Sens Pw Supply Val
Rr Height Sens Signal Val
OK
The display is as specified in the normal condition column.
Result
Proceed to
OK
NG
CHECK HARNESS AND CONNECTOR (HEADLIGHT LEVELING ECU ASSEMBLY - REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY LH)
Disconnect the A67 headlight leveling ECU connector.
Disconnect the O1*1 or O2*2 rear height control sensor connector.
*1: for AWD
*2: for 2WD
Measure the resistance according to the value(s) in the table below.
Standard Resistance
for AWD
Tester Connection
Condition
Specified Condition
A67-12 (SBR) - O1-3 (SHB)
Always
Below 1 Ω
A67-19 (SHRL) - O1-2 (SHRR)
Always
Below 1 Ω
A67-21 (SGR) - O1-1 (SHG)
Always
Below 1 Ω
A67-12 (SBR) - Body ground
Always
10 kΩ or higher
A67-19 (SHRL) - Body ground
Always
10 kΩ or higher
A67-21 (SGR) - Body ground
Always
10 kΩ or higher
for 2WD
Tester Connection
Condition
Specified Condition
A67-12 (SBR) - O2-3 (SHB)
Always
Below 1 Ω
A67-19 (SHRL) - O2-2 (SHRR)
Always
Below 1 Ω
A67-21 (SGR) - O2-1 (SHG)
Always
Below 1 Ω
A67-12 (SBR) - Body ground
Always
10 kΩ or higher
A67-19 (SHRL) - Body ground
Always
10 kΩ or higher
A67-21 (SGR) - Body ground
Always
10 kΩ or higher
Result
Proceed to
OK
NG
NG REPAIR OR REPLACE HARNESS OR CONNECTOR
INSPECT REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY LH
Remove the rear height control sensor.
Inspect the rear height control sensor.
Result
Proceed to
OK
NG