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Home >> Mazda >> 2017 >> 6 Touring, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 143 (On-Board Diagnostic - Adaptive Front Lighting System Control Module) >> DTC B1044-01; Auto Leveling Sensor Circuit Malfunction >> Diagnostic Procedure
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Diagnostic Procedure

WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.
DETECTION CONDITION & POSSIBLE CAUSE

Step Inspection Action
1 INSPECT AUTO LEVELING SENSOR CONNECTOR CONDITION Yes Go to the next step.
No Repair or replace the connector, then go to Step 7.
2 INSPECT ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE CONNECTOR CONDITION
  • Disconnect the adaptive front lighting system (AFS) control module connector.
  • Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
  • Is the connector normal?
 Yes Go to the next step.
No Repair or replace the connector, then go to Step 7.
3 INSPECT AUTO LEVELING SENSOR CIRCUIT FOR SHORT TO GROUND
  • Verify that the auto leveling sensor and adaptive front lighting system (AFS) control module connectors are disconnected.
  • Inspect for continuity between the following terminals (wiring harness-side) and body ground:
    • Auto leveling sensor terminal C
    • Auto leveling sensor terminal B
      • Auto leveling sensor terminal A
  • Is there continuity?
 Yes Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
  • Adaptive front lighting system (AFS) control module terminal I-Auto leveling sensor terminal C
  • Adaptive front lighting system (AFS) control module terminal K-Auto leveling sensor terminal B
  • Adaptive front lighting system (AFS) control module terminal C-Auto leveling sensor terminal A

    If there is a common connector:

  • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground.
  • Repair or replace the malfunctioning part.

    If there is no common connector:

  • Repair or replace the wiring harness which has a short to ground.

Go to Step 7.
No Go to the next step.
4 INSPECT AUTO LEVELING SENSOR CIRCUIT FOR SHORT TO POWER SUPPLY
  • Verify that the auto leveling sensor and adaptive front lighting system (AFS) control module connectors are disconnected.
  • Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
  • Switch the ignition ON (engine off or on).
  • Measure the voltage at the following terminals (wiring harness-side):
    • Auto leveling sensor terminal C
    • Auto leveling sensor terminal B
      • Auto leveling sensor terminal A
  • Is the voltage 0 V?
 Yes Go to the next step.
No Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
  • Adaptive front lighting system (AFS) control module terminal I-Auto leveling sensor terminal C
  • Adaptive front lighting system (AFS) control module terminal K-Auto leveling sensor terminal B
  • Adaptive front lighting system (AFS) control module terminal C-Auto leveling sensor terminal A

    If there is a common connector:

  • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to power supply.
  • Repair or replace the malfunctioning part.

    If there is no common connector:

  • Repair or replace the wiring harness which has a short to power supply.

Go to Step 7.
5 INSPECT AUTO LEVELING SENSOR CIRCUIT FOR OPEN CIRCUIT
  • Switch the ignition to off.
  • Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
  • Verify that the auto leveling sensor and adaptive front lighting system (AFS) control module connectors are disconnected.
  • Inspect for continuity between the following terminals (wiring harness-side):
    • Adaptive front lighting system (AFS) control module terminal I-Auto leveling sensor terminal C
    • Adaptive front lighting system (AFS) control module terminal K-Auto leveling sensor terminal B
      • Adaptive front lighting system (AFS) control module terminal C-Auto leveling sensor terminal A
  • Is there continuity?
 Yes Go to the next step.
No Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
  • Adaptive front lighting system (AFS) control module terminal I-Auto leveling sensor terminal C
  • Adaptive front lighting system (AFS) control module terminal K-Auto leveling sensor terminal B
  • Adaptive front lighting system (AFS) control module terminal C-Auto leveling sensor terminal A

    If there is a common connector:

  • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.
  • Repair or replace the malfunctioning part.

    If there is no common connector:

  • Repair or replace the wiring harness which has an open circuit.

Go to Step 7.
6 INSPECT AUTO LEVELING SENSOR Yes Go to the next step.
No Replace the auto leveling sensor, then go to the next step.
(See AUTO LEVELING SENSOR REMOVAL/INSTALLATION .)
7 VERIFY THAT REPAIRS HAVE BEEN COMPLETED Yes Repeat the inspection from Step 1.
No Go to the next step.
8 VERIFY IF OTHER DTCs DISPLAYED
  • Are any other DTCs displayed?
 Yes Repair the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE] .)
No DTC troubleshooting completed.
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