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Home >> Mazda >> 2021 >> CX-3 AWD >> Repair and Diagnosis >> Accessories & Equipment >> Headlights >> On-Board Diagnostic - Adaptive Front Lighting System Control Module >> DTC B1041-14: Headlight Leveling Actuator Circuit Malfunction (Adaptive Front Lighting System) >> Diagnostic Procedure

Diagnostic Procedure

DTC B1041:14 (ADAPTIVE FRONT LIGHTING SYSTEM) DIAGNOSTIC PROCEDURE

Step Inspection Action
1 INSPECT FRONT COMBINATION LIGHT (LH) CONNECTOR CONDITION
  • Switch the ignition to off.
  • Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION .)
  • Disconnect the front combination light (LH) 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.
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 7.
3 INSPECT AFS CONTROL MODULE CONNECTOR CONDITION
  • Disconnect the 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.
4 INSPECT HEADLIGHT LEVELING ACTUATOR CIRCUIT FOR SHORT TO GROUND
  • Verify that the following connectors are disconnected.
    • Front combination light (LH)
    • Front combination light (RH)
      • AFS control module
  • Inspect for continuity between the following terminals (vehicle 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.
  • AFS control module terminal B and front combination light (LH) terminal I
  • AFS control module terminal H and front combination light (LH) terminal F (Without auto leveling sensor)
  • AFS control module terminal P and front combination light (LH) terminal F (With auto leveling sensor)
  • AFS control module terminal B and front combination light (RH) terminal I
  • AFS control module terminal H and front combination light (RH) terminal F (Without auto leveling sensor)
  • AFS control module terminal P and front combination light (RH) terminal F (With auto leveling sensor)

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.
5 INSPECT HEADLIGHT LEVELING ACTUATOR CIRCUIT FOR OPEN CIRCUIT
  • Verify that the following connectors are disconnected.
    • Front combination light (LH)
    • Front combination light (RH)
      • AFS control module
  • Inspect the wiring harness between the following terminals (vehicle wiring harness side) for continuity.
    • AFS control module terminal B and front combination light (LH) terminal I
    • AFS control module terminal H and front combination light (LH) terminal F (Without auto leveling sensor)
    • AFS control module terminal P and front combination light (LH) terminal F (With auto leveling sensor)
    • AFS control module terminal B and front combination light (RH) terminal I
    • AFS control module terminal H and front combination light (RH) terminal F (Without auto leveling sensor)
      • AFS control module terminal P and front combination light (RH) terminal F (With auto leveling sensor)
  • 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.
  • AFS control module terminal B and front combination light (LH) terminal I
  • AFS control module terminal H and front combination light (LH) terminal F (Without auto leveling sensor)
  • AFS control module terminal P and front combination light (LH) terminal F (With auto leveling sensor)
  • AFS control module terminal B and front combination light (RH) terminal I
  • AFS control module terminal H and front combination light (RH) terminal F (Without auto leveling sensor)
  • AFS control module terminal P and front combination light (RH) terminal F (With auto leveling sensor)

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 HEADLIGHT LEVELING ACTUATOR OPERATION Yes Go to the next step.
No Replace the front combination light, then go to the next step.
(See FRONT COMBINATION LIGHT 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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