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Diagnostic Procedure

WARNING: This page is about a different car, the 2017 Mazda CX-5. However, it is still accessible from the selected car via links, so may be relevant.
DTC B1D07:13 (FRONT BODY CONTROL MODULE) DIAGNOSTIC PROCEDURE

Step Inspection Action
1 VERIFY FRONT BODY CONTROL MODULE (FBCM) DTCs AGAIN Yes Go to the next step.
No Go to Step 23.
2 DETERMINE MALFUNCTIONING LIGHT
  • Operate the turn switch to the RH position.
  • Are there any lights among the following which do not flash or continue to be illuminated?
  • Front turn light (RH)
  • Rear turn light (RH)
    • Side turn light (RH)
 Yes All lights do not flash or continue to be illuminated:
  • Go to the next step.

    Front turn light (RH) do not flash or continue to be illuminated:

  • Go to Step 4.

    Rear turn light (RH) do not flash or continue to be illuminated:

  • Go to Step 10.

    Side turn light (RH) do not flash or continue to be illuminated:

  • Go to Step 16.
No Go to Step 22.
3 INSPECT FRONT BODY CONTROL MODULE (FBCM) CONNECTOR CONDITION
  • Switch the ignition off.
  • Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  • Disconnect the front body control module (FBCM) 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 Step 22.
No Repair or replace the connector, then go to Step 22.
4 INSPECT FRONT TURN LIGHT BULB (RH)
  • Inspect the front turn light bulb (RH).
  • Is the bulb normal?
 Yes Go to the next step.
No Replace the bulb, then go to Step 22.
(See FRONT TURN LIGHT BULB REMOVAL/INSTALLATION .)
5 INSPECT FRONT TURN LIGHT (RH) CONNECTOR CONDITION
  • Switch the ignition off.
  • Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  • 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 22.
6 INSPECT FOR OPEN CIRCUIT IN FRONT TURN LIGHT (RH) GROUND CIRCUIT
  • Verify that the front combination light (RH) connector is disconnected.
  • Inspect for continuity between front combination light (RH) terminal N (wiring harness-side) and body ground.
  • 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 front combination light (RH) terminal N and body ground.
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 22.
7 INSPECT FRONT BODY CONTROL MODULE (FBCM) CONNECTOR CONDITION
  • Disconnect the front body control module (FBCM) 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 22.
8 INSPECT FOR SHORT TO POWER SUPPLY IN FRONT TURN LIGHT (RH) CONTROL CIRCUIT
  • Verify that the front combination light (RH) and front body control module (FBCM) connectors are disconnected.
  • Reconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  • Switch the ignition ON (engine off or on).
  • Measure the voltage at the front body control module (FBCM) terminal 1G (wiring harness-side).
  • 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 front combination light (RH) terminal E and front body control module (FBCM) terminal 1G.
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 22.
9 INSPECT FOR OPEN CIRCUIT IN FRONT TURN LIGHT (RH) CONTROL CIRCUIT
  • Switch the ignition off.
  • Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  • Verify that the front combination light (RH) and front body control module (FBCM) connectors are disconnected.
  • Inspect for continuity between front combination light (RH) terminal E (wiring harness-side) and front body control module (FBCM) terminal 1G.
  • Is there continuity?
 Yes Go to Step 22.
No Refer to the wiring diagram and verify whether or not there is a common connector between front combination light (RH) terminal E and front body control module (FBCM) terminal 1G.
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 22.
10 INSPECT REAR TURN LIGHT BULB (RH)
  • Inspect the rear turn light bulb (RH).
  • Is the rear turn light bulb (RH) normal?
 Yes Go to the next step.
No Replace the rear turn light bulb (RH), then go to Step 22.
(See REAR TURN LIGHT BULB REMOVAL/INSTALLATION .)
11 INSPECT REAR TURN LIGHT (RH) CONNECTOR CONDITION
  • Switch the ignition off.
  • Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  • Disconnect the rear 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 22.
12 INSPECT FOR OPEN CIRCUIT IN REAR TURN LIGHT (RH) GROUND CIRCUIT
  • Verify that the rear combination light (RH) connector is disconnected.
  • Inspect for continuity between rear combination light (RH) terminal F (wiring harness-side) and body ground.
  • 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 rear combination light (RH) terminal F and body ground.
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 22.
13 INSPECT FRONT BODY CONTROL MODULE (FBCM) CONNECTOR CONDITION
  • Disconnect the front body control module (FBCM) 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 22.
14 INSPECT FOR SHORT TO POWER SUPPLY IN FRONT TURN LIGHT (RH) CONTROL CIRCUIT
  • Verify that the front combination light (RH) and front body control module (FBCM) connectors are disconnected.
  • Reconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  • Switch the ignition ON (engine off or on).
  • Measure the voltage at the front body control module (FBCM) terminal 1E (wiring harness-side).
  • 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 rear combination light (RH) terminal A and front body control module (FBCM) terminal 1E.
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 22.
15 INSPECT FOR OPEN CIRCUIT IN FRONT TURN LIGHT (RH) CONTROL CIRCUIT
  • Switch the ignition off.
  • Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  • Verify that the rear combination light (RH) and front body control module (FBCM) connectors are disconnected.
  • Inspect for continuity between rear combination light (RH) terminal A (wiring harness-side) and front body control module (FBCM) terminal 1E.
  • Is there continuity?
 Yes Go to Step 22.
No Refer to the wiring diagram and verify whether or not there is a common connector between rear combination light (RH) terminal A and front body control module (FBCM) terminal 1E.
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 22.
16 INSPECT POWER OUTER MIRROR (RH) CONNECTOR CONDITION
  • Switch the ignition off.
  • Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  • Disconnect the power outer mirror (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 22.
17 INSPECT FOR OPEN CIRCUIT IN SIDE TURN LIGHT (RH) GROUND CIRCUIT
  • Verify that the power outer mirror (RH) connector is disconnected.
  • Inspect for continuity between power outer mirror (RH) terminal G (wiring harness-side) and body ground.
  • 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 power outer mirror (RH) terminal G and body ground.
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 22.
18 INSPECT SIDE TURN LIGHT (RH) Yes Go to the next step.
No Replace the power outer mirror (RH), then go to Step 22.
(See POWER OUTER MIRROR REMOVAL/INSTALLATION .)
(See SIDE TURN LIGHT REMOVAL/INSTALLATION .)
19 INSPECT FRONT BODY CONTROL MODULE (FBCM) CONNECTOR CONDITION
  • Disconnect the front body control module (FBCM) 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 22.
20 INSPECT FOR SHORT TO POWER SUPPLY IN SIDE TURN LIGHT (RH) CONTROL CIRCUIT
  • Verify that the power outer mirror (RH) and front body control module (FBCM) connectors are disconnected.
  • Reconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  • Switch the ignition ON (engine off or on).
  • Measure the voltage at the front body control module (FBCM) terminal 1F (wiring harness-side).
  • 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 power outer mirror (RH) terminal E and front body control module (FBCM) terminal 1F.
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 22.
21 INSPECT FOR OPEN CIRCUIT IN TURN LIGHT (RH) CONTROL CIRCUIT
  • Switch the ignition off.
  • Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  • Verify that the side turn light (RH) and front body control module (FBCM) connectors are disconnected.
  • Inspect for continuity between power outer mirror (RH) terminal E (wiring harness-side) and front body control module (FBCM) terminal 1F.
  • 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 power outer mirror (RH) terminal E and front body control module (FBCM) terminal 1F.
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 the next step.
22 VERIFY THAT REPAIRS HAVE BEEN COMPLETED Yes Repeat the inspection from Step 1.
Go to the next step.
No Go to the next step.
23 VERIFY IF OTHER DTCs DISPLAYED
  • Are any other DTCs displayed?
 Yes Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [FRONT BODY CONTROL MODULE (FBCM)] .)
No DTC troubleshooting completed.
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