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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 B1041-14; Headlight Leveling Actuator Circuit Malfunction >> Diagnostic Procedure

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.
DIAGNOSTIC PROCEDURE

Step Inspection Action
1 INSPECT FRONT COMBINATION LIGHT (LH) CONNECTOR CONDITION Yes Go to the next step.
No Repair or replace the connector, then go to Step 8.
2 INSPECT FRONT COMBINATION LIGHT (RH) CONNECTOR CONDITION
  • Disconnect the front combination light (RH) 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 8.
3 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 8.
4 INSPECT HEADLIGHT LEVELING ACTUATOR CIRCUIT FOR SHORT TO GROUND
  • Verify that the front combination light (LH), front combination light (RH) and adaptive front lighting system (AFS) control module connectors are disconnected.
  • Inspect for continuity between the following terminals (wiring harness-side) and body ground:
    • Front combination light (LH) terminal I
    • Front combination light (LH) terminal F
    • Front combination light (RH) terminal I
      • Front combination light (RH) terminal F
  • 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 P-Front combination light (LH) terminal I
  • Adaptive front lighting system (AFS) control module terminal O-Front combination light (LH) terminal F
  • Adaptive front lighting system (AFS) control module terminal P-Front combination light (RH) terminal I
  • Adaptive front lighting system (AFS) control module terminal O-Front combination light (RH) terminal F

    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 8.
No Go to the next step.
5 INSPECT HEADLIGHT LEVELING ACTUATOR CIRCUIT FOR OPEN CIRCUIT
  • Verify that the front combination light (LH), front combination light (RH) 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 P-Front combination light (LH) terminal I
    • Adaptive front lighting system (AFS) control module terminal O-Front combination light (LH) terminal F
    • Adaptive front lighting system (AFS) control module terminal P-Front combination light (RH) terminal I
      • Adaptive front lighting system (AFS) control module terminal O-Front combination light (RH) terminal F
  • 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 P-Front combination light (LH) terminal I
  • Adaptive front lighting system (AFS) control module terminal O-Front combination light (LH) terminal F
  • Adaptive front lighting system (AFS) control module terminal P-Front combination light (RH) terminal I
  • Adaptive front lighting system (AFS) control module terminal O-Front combination light (RH) terminal F

    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 8.
6 INSPECT HEADLIGHT LEVELING ACTUATOR (LH) OPERATION Yes Go to the next step.
No Replace the front combination light (LH), then go to Step 8.
(See FRONT COMBINATION LIGHT REMOVAL/INSTALLATION .)
7 INSPECT HEADLIGHT LEVELING ACTUATOR (RH) OPERATION Yes Go to the next step.
No Replace the front combination light (RH), then go to the next step.
(See FRONT COMBINATION LIGHT REMOVAL/INSTALLATION .)
8 VERIFY THAT REPAIRS HAVE BEEN COMPLETED Yes Repeat the inspection from Step 1.
No Go to the next step.
9 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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