DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
CHECK FOR DTC
CHECK VEHICLE TYPE
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
READ VALUE USING INTELLIGENT TESTER (REAR HEIGHT CONTROL SENSOR)
CHECK HARNESS AND CONNECTOR (HEADLIGHT SWIVEL ECU ASSEMBLY - REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY LH)
INSPECT REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY LH
CHECK FOR DTC (ACTIVE HEIGHT CONTROL SUSPENSION)
READ VALUE USING INTELLIGENT TESTER (REAR HEIGHT CONTROL SENSOR)
CHECK HARNESS AND CONNECTOR (HEADLIGHT SWIVEL ECU ASSEMBLY - SUSPENSION CONTROL ECU)
CHECK SUSPENSION CONTROL ECU
DTC B2416 Height Control Sensor Malfunction
DTC B241A Rear Height Control Sensor
DESCRIPTION
The DTC is stored when the headlight swivel ECU*1 or headlight leveling ECU*2 detects malfunctions in the rear height control sensor LH power source or rear height control sensor LH (w/o Active Height Control Suspension).
*1: w/ Dynamic Headlight Auto Leveling
*2: w/ Static Headlight Auto Leveling
The headlight swivel ECU receives signals indicating the height of the vehicle from the suspension control ECU (w/ Active Height Control Suspension).
| DTC Code | DTC Detection Condition | Trouble Area |
| B2416 |
w/o Active Height Control Suspension:
Malfunction in the rear height control sensor LH.
Open or short in the rear height control sensor LH power source circuit.
| Rear height control sensor sub-assembly LH (w/o Active Height Control Suspension)
Suspension control ECU (w/ Active Height Control Suspension)
Headlight swivel ECU assembly (w/ Dynamic Headlight Auto Leveling)
Headlight leveling ECU assembly (w/ Static Headlight Auto Leveling)
Harness or connector
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w/ Active Height Control Suspension:
Malfunction in the suspension control ECU.
Open or short in the suspension control ECU circuit.
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| B241A |
Malfunction in the rear height control sensor LH.
Open or short in the rear height control sensor LH circuit.
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WIRING DIAGRAM
INSPECTION PROCEDURE
- After replacing the headlight leveling ECU*1 or headlight swivel ECU*2 and rear height control sensor LH, initialization of the ECU is necessary (except w/ Dynamic Headlight Auto Leveling) ().
*1: w/ Static Headlight Auto Leveling
*2: w/ Dynamic Headlight Auto Leveling
Check for DTCs ().
- OK:
- DTC B2416 or B241A output does not occur.
| OK | |
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| USE SIMULATION METHOD TO CHECK ()
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Check the vehicle type.
Result| Result | Proceed to |
| w/ Static Headlight Auto Leveling | A |
| w/ Dynamic Headlight Auto Leveling, w/o Active Height Control Suspension | B |
| w/ Dynamic Headlight Auto Leveling, w/ Active Height Control Suspension | C |
| 3.READ VALUE USING INTELLIGENT TESTER (REAR HEIGHT CONTROL SENSOR) |
Using the intelligent tester, read the Data List ().
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 | 4.7 to 5.2 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:
- Normal conditions listed above are displayed.
| OK | |
| |
| REPLACE HEADLIGHT LEVELING ECU ASSEMBLY ()
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| 4.CHECK HARNESS AND CONNECTOR (HEADLIGHT LEVELING ECU ASSEMBLY - REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY LH) |
Disconnect the E109 headlight leveling ECU connector.
Disconnect the N7 rear height control sensor LH connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| E109-12 (SBR) - N7-1 (SHB) | Always | Below 1 Ω |
| E109-19 (SHRL) - N7-2 (SHRL) | Always | Below 1 Ω |
| E109-21 (SGR) - N7-3 (SHG) | Always | Below 1 Ω |
| E109-12 (SBR) - Body ground | Always | 10 kΩ or higher |
| E109-19 (SHRL) - Body ground | Always | 10 kΩ or higher |
| E109-21 (SGR) - Body ground | Always | 10 kΩ or higher |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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| 5.INSPECT REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY LH |
Remove the rear height control sensor LH ().
Inspect the rear height control sensor LH ().
| | REPLACE REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY LH ()
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| OK | |
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| REPLACE HEADLIGHT LEVELING ECU ASSEMBLY ()
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| 6.READ VALUE USING INTELLIGENT TESTER (REAR HEIGHT CONTROL SENSOR) |
Using the intelligent tester, read the Data List ().
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 | 4.7 to 5.2 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:
- Normal conditions listed above are displayed.
Result| Result | Proceed to |
| OK (for LHD) | A |
| OK (for RHD) | B |
| NG | C |
| | REPLACE HEADLIGHT SWIVEL ECU ASSEMBLY ()
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| A | |
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| REPLACE HEADLIGHT SWIVEL ECU ASSEMBLY ()
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| 7.CHECK HARNESS AND CONNECTOR (HEADLIGHT SWIVEL ECU ASSEMBLY - REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY LH) |
Disconnect the E101 headlight swivel ECU connector.
Disconnect the N7 rear height control sensor LH connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| E101-18 (SBR) - N7-1 (SHB) | Always | Below 1 Ω |
| E101-19 (SHRL) - N7-2 (SHRL) | Always | Below 1 Ω |
| E109-21 (SGR) - N7-3 (SHG) | Always | Below 1 Ω |
| E101-18 (SBR) - Body ground | Always | 10 kΩ or higher |
| E101-19 (SHRL) - Body ground | Always | 10 kΩ or higher |
| E109-21 (SGR) - Body ground | Always | 10 kΩ or higher |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
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| 8.INSPECT REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY LH |
Remove the rear height control sensor LH ().
Inspect the rear height control sensor LH ().
Result| Result | Proceed to |
| OK (for LHD) | A |
| OK (for RHD) | B |
| NG | C |
| | REPLACE HEADLIGHT SWIVEL ECU ASSEMBLY ()
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| | REPLACE REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY LH ()
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| A | |
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| REPLACE HEADLIGHT SWIVEL ECU ASSEMBLY ()
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| 9.CHECK FOR DTC (ACTIVE HEIGHT CONTROL SUSPENSION) |
Check for DTCs ().
- OK:
- DTC "C1712 Front Height Control Sensor LH Circuit Malfunction" and "C1714 Rear Height Control Sensor LH Circuit Malfunction" output does not occur.
| | GO TO ACTIVE HEIGHT CONTROL SUSPENSION ()
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| 10.READ VALUE USING INTELLIGENT TESTER (REAR HEIGHT CONTROL SENSOR) |
Using the intelligent tester, read the Data List ().
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 | 4.7 to 5.2 V | - |
| Fr Height Sens Signal Val | Front height control sensor signal value / 0 to 5 V | Approximately 2.5 V (When vehicle level) | The value changes according to the vehicle height. |
| 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:
- Normal conditions listed above are displayed.
Result| Result | Proceed to |
| OK (for LHD) | A |
| OK (for RHD) | B |
| NG | C |
| | REPLACE HEADLIGHT SWIVEL ECU ASSEMBLY ()
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| A | |
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| REPLACE HEADLIGHT SWIVEL ECU ASSEMBLY ()
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| 11.CHECK HARNESS AND CONNECTOR (HEADLIGHT SWIVEL ECU ASSEMBLY - SUSPENSION CONTROL ECU) |
Disconnect the E101 headlight swivel ECU connector.
Disconnect the K35 and K36 suspension control ECU connectors.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| E101-18 (SBR) - K35-23 (SHB5) | Always | Below 1 Ω |
| E101-19 (SHRL) - K36-28 (SHR2) | Always | Below 1 Ω |
| E101-17 (SHFL) - K35-22 (SHF2) | Always | Below 1 Ω |
| E101-21 (SGR) - K35-11 (SHG5) | Always | Below 1 Ω |
| E101-18 (SBR) - Body ground | Always | 10 kΩ or higher |
| E101-19 (SHRL) - Body ground | Always | 10 kΩ or higher |
| E101-17 (SHFL) - Body ground | Always | 10 kΩ or higher |
| E101-21 (SGR) - Body ground | Always | 10 kΩ or higher |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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| 12.CHECK SUSPENSION CONTROL ECU |
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
| Tester Connection | Switch Condition | Specified Condition |
| K35-23 (SHB5) - K35-11 (SHG5) | Ignition switch ON | 4.5 to 5.5 V |
| K35-22 (SHF2) - K35-11 (SHG5) | Ignition switch ON | Approximately 2.5 V (When vehicle level)
(The value changes according to the vehicle height) |
| K36-28 (SHR2) - K35-11 (SHG5) | Ignition switch ON | Approximately 2.5 V (When vehicle level)
(The value changes according to the vehicle height) |
Text in Illustration| *a | Component with harness connected
(Suspension Control ECU) |
Result| Result | Proceed to |
| OK (for LHD) | A |
| OK (for RHD) | B |
| NG | C |
| | REPLACE HEADLIGHT SWIVEL ECU ASSEMBLY ()
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| | REPLACE SUSPENSION CONTROL ECU ()
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| A | |
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| REPLACE HEADLIGHT SWIVEL ECU ASSEMBLY ()
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