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Home >> Mazda >> 2017 >> CX-5 Grand Select, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 37 (On-Board Diagnostic - Adaptive Front Lighting System) >> DTC B10A4-87: Communication Error With Swivel Actuator (RH) >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2016 Mazda CX-5. However, it is still accessible from the selected car via links, so may be relevant.
Step Inspection Action
1 INSPECT FRONT COMBINATION LIGHT (RH) CONNECTOR CONDITION 
Yes Go to the next step.
No Repair or replace the connector, then go to Step 7.
2 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.
3 INSPECT SWIVEL ACTUATOR (RH) CIRCUIT FOR SHORT TO GROUND 
  • Verify that the front combination light (RH) and AFS control module connectors are disconnected.
  • Inspect for continuity between the following terminals (vehicle wiring harness side) and body ground.
    • Front combination light (RH) terminal K
    • Front combination light (RH) terminal J
  • Is there continuity?
Yes Repair or replace the wiring harness which is shorted to ground, then go to Step 7.
No Go to the next step.
4 INSPECT SWIVEL ACTUATOR (RH) CIRCUIT FOR SHORT TO POWER SUPPLY 
  • Verify that the front combination light (RH) and 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 (vehicle wiring harness side).
    • Front combination light (RH) terminal K
    • Front combination light (RH) terminal J
  • Is the voltage 0 V?
Yes Go to the next step.
No Repair or replace the wiring harness which is shorted to power supply, then go to Step 7.
5 INSPECT SWIVEL ACTUATOR (RH) CIRCUIT FOR OPEN CIRCUIT 
  • Verify that the front combination light (RH) and AFS control module connectors are disconnected.
  • Switch the ignition to off.
  • Disconnect the negative battery cable.

    (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)

  • Inspect the wiring harness between the following terminals (vehicle wiring harness side) for continuity.
    • AFS control module terminal D and front combination light (RH) terminal K
    • AFS control module terminal F and front combination light (RH) terminal J
  • Is there continuity?
Yes Go to the next step.
No Repair or replace the wiring harness which has an open circuit, then go to Step 7.
6 PERFORM DTC INSPECTION AND VERIFY IF MALFUNCTIONING PART IS SWIVEL ACTUATOR (RH) 
Yes Replace the front combination light (RH), then go to the next step.
(See FRONT COMBINATION LIGHT REMOVAL/INSTALLATION .)
No Go to Step 8.
7 VERIFY THAT REPAIRS HAVE BEEN COMPLETED 
Yes Repeat the inspection from Step 1.
  • If the malfunction recurs, replace the AFS control module, then go to the next step.

(See ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE REMOVAL/INSTALLATION .)
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)] .)
No DTC troubleshooting completed.