Scan Tool Data
Precautions: Precautions for Headlight Auto Leveling System Service · Precautions for Body, Cab and Accessories · General safety (00)
Headlight Auto Leveling Control Module
NOTE:
If communication between SUZUKI scan tool and headlight auto leveling control module is not possible, perform the following checks:
•Check communication condition between PC and VCI using SUZUKI scan tool function.
•Check DLC power circuit and ground circuit.
•Check DLC cable. If necessary, check DLC cable by substituting a known-good DLC cable.
•Check CAN communication system. (“Control Module Communication Bus Off” is detected in any control module.)
•Check DLC power circuit and ground circuit.
•Check DLC cable. If necessary, check DLC cable by substituting a known-good DLC cable.
•Check CAN communication system. (“Control Module Communication Bus Off” is detected in any control module.)
—M16A model:
—D16AA model:
•Check headlight auto leveling control module power circuit and ground circuit. —D16AA model:
| Scan tool data | Vehicle condition | Normal condition / Reference value |
|---|---|---|
| Battery Voltage
|
Engine: Idle speed | Approx. 12 V |
| Leveling Actuator
|
Ignition: “ON” Headlights: ON |
9.4 – 72.9% |
| Other than above condition | 0% | |
| Rear Height Sensor
|
Ignition: “ON” | 490 – 4,500 mV |
| Vehicle Speed
|
Vehicle running | Almost the same as speedometer reading |
| Headlight Switch
|
•Ignition: “ON”
•Headlights: ON |
ON |
|
•Ignition: “ON”
•Headlights: OFF |
OFF | |
| Right Side Headlight Circuit Open
|
Headlights: ON | Nondetection |
| Headlights: OFF or right side headlight circuit is open. | Detection | |
| Left Side Headlight Circuit Open
|
Headlights: ON | Nondetection |
| Headlights: OFF or left side headlight circuit is open. | Detection |
Scan Tool Data Definitions
Battery Voltage (V)
This parameter indicates battery voltage inputted from IG1 relay to headlight auto leveling control module.
Leveling Actuator (%)
This parameter indicates in percent how much correction is needed in headlight leveling actuators so that headlight auto leveling control module maintains a proper optical axis of headlights based on signals inputted from rear vehicle height sensor.
Rear Height Sensor (mV)
This parameter indicates the input signal from rear vehicle height sensor.
Vehicle Speed (km/h, MPH)
This parameter indicates the vehicle speed calculated ECM.
Headlight Switch (ON/OFF)
This indicates state of lighting switch.
•ON: Lighting switch is in ON or “AUTO” position and headlights are on.
•OFF: Lighting switch is in clearance light, “OFF” or “AUTO” position and headlights are off.
•OFF: Lighting switch is in clearance light, “OFF” or “AUTO” position and headlights are off.
Right Side Headlight Circuit Open
This parameter indicates the state of the right side headlight circuit.
Left Side Headlight Circuit Open
This parameter indicates the state of the left side headlight circuit.