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DTC B1514:86 [BODY CONTROL MODULE (BCM) (E)]

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L.H.D. (Without Emergency Call System (Except Chinese specs.) or Mazda EMERGENCY ASSISTANCE (Chinese specs.)) or R.H.D.

Outline

System malfunction location	Collision signal error
Detection condition	•  The door-electrical supply unit (passenger’s side) received error signal from Sophisticated Airbag Sensor (SAS) control module.
Fail-safe	Not applicable
Possible cause	•  DTCs are stored in the Sophisticated Airbag Sensor (SAS) control module. •  Sophisticated Airbag Sensor (SAS) control module connector or terminal malfunction •  Door-electrical supply unit (passenger’s side) connector or terminal malfunction •  Short to ground in Sophisticated Airbag Sensor (SAS) control module signal circuit •  Open circuit in Sophisticated Airbag Sensor (SAS) control module signal circuit •  Sophisticated Airbag Sensor (SAS) control module malfunction •  Door-electrical supply unit (passenger’s side) malfunction •  Body control module (BCM) malfunction

Diagnostic Procedure

Step	Inspection	Results	Action
1	VERIFY BODY CONTROL MODULE (BCM) DTCs AGAIN •  Clear the DTC recorded in the memory. (See CLEARING DTC.) •  Perform the DTC inspection for the body control module (BCM). (See DTC INSPECTION.) •  Is the same Pending DTC present?	Yes	Go to the next step.
		No	Go to repair completion verification 2.
2	INSPECT SOPHISTICATED AIRBAG SENSOR (SAS) CONTROL MODULE FOR MALFUNCTION •  Perform the DTC inspection for the Sophisticated Airbag Sensor (SAS) control module. (See DTC INSPECTION.) •  Is a DTC displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [SAS CONTROL MODULE (STANDARD DEPLOYMENT CONTROL SYSTEM)].) (See DTC TABLE [SAS CONTROL MODULE (TWO-STEP DEPLOYMENT CONTROL SYSTEM)].)
		No	Go to the next step.
3	INSPECT SOPHISTICATED AIRBAG SENSOR (SAS) CONTROL MODULE CONNECTOR FOR MALFUNCTION •  Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION.) •  Are the connector and terminal normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification.
4	INSPECT DOOR-ELECTRICAL SUPPLY UNIT (PASSENGER’S SIDE) CONNECTOR FOR MALFUNCTION •  Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION.) •  Are the connector and terminal normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification.
5	INSPECT SOPHISTICATED AIRBAG SENSOR (SAS) CONTROL MODULE SIGNAL CIRCUIT FOR SHORT TO GROUND •  Inspect the applicable circuit for a short to ground. (See CIRCUIT INSPECTION.) •  Is the circuit normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification.
6	INSPECT SOPHISTICATED AIRBAG SENSOR (SAS) CONTROL MODULE SIGNAL CIRCUIT FOR OPEN CIRCUIT •  Inspect the applicable circuit for an open circuit. (See CIRCUIT INSPECTION.) •  Is the circuit normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification.
7	INSPECT SOPHISTICATED AIRBAG SENSOR (SAS) CONTROL MODULE FOR MALFUNCTION DEPENDING ON REPEATABILITY •  Install/connect the part removed/disconnected during the troubleshooting procedure. •  Clear the DTC recorded in the memory. (See CLEARING DTC.) •  Perform the DTC inspection for the body control module (BCM). (See DTC INSPECTION.) •  Is the same Pending DTC present?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].) If the CAN communication is normal, replace the Sophisticated Airbag Sensor (SAS) control module and perform the repair completion verification. (See SAS CONTROL MODULE REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM].) (See SAS CONTROL MODULE REMOVAL/INSTALLATION [STANDARD DEPLOYMENT CONTROL SYSTEM].)
		No	Go to repair completion verification 2.
8	INSPECT DOOR-ELECTRICAL SUPPLY UNIT (PASSENGER’S SIDE) FOR MALFUNCTION DEPENDING ON REPEATABILITY •  Install/connect the part removed/disconnected during the troubleshooting procedure. •  Clear the DTC recorded in the memory. (See CLEARING DTC.) •  Perform the DTC inspection for the body control module (BCM). (See DTC INSPECTION.) •  Is the same Pending DTC present?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].) If the CAN communication is normal, replace the door-electrical supply unit (passenger’s side) and perform the repair completion verification. (See DOOR-ELECTRICAL SUPPLY UNIT REMOVAL/INSTALLATION.)
		No	Go to repair completion verification 2.
Repair completion verification 1	VERIFY THAT VEHICLE IS REPAIRED •  Install/connect the part removed/disconnected during the troubleshooting procedure. •  Clear the DTC recorded in the memory. (See CLEARING DTC.) •  Perform the DTC inspection for the body control module (BCM). (See DTC INSPECTION.) •  Is the same Pending DTC present?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].) If the CAN communication is normal, perform the diagnosis from Step 1. •  If the malfunction recurs, replace the body control module (BCM), then go to the next step. (See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION [(E)].)
		No	Go to the next step.
Repair completion verification 2	VERIFY IF OTHER DTC IS DISPLAYED •  Perform the DTC inspection. (See DTC INSPECTION.) •  Are any other DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
		No	DTC troubleshooting completed.

L.H.D. (With Emergency Call System)

Outline

System malfunction location	Collision signal error
Detection condition	•  The door-electrical supply unit (passenger’s side) received error signal from emergency call unit.
Fail-safe	Not applicable
Possible cause	•  DTCs are stored in the emergency call unit. •  Emergency call unit connector or terminal malfunction •  Door-electrical supply unit (passenger’s side) connector or terminal malfunction •  Short to ground in emergency call unit signal circuit •  Open circuit in emergency call unit signal circuit •  Emergency call unit malfunction •  Door-electrical supply unit (passenger’s side) malfunction •  Body control module (BCM) malfunction

Diagnostic Procedure

Step	Inspection	Results	Action
1	VERIFY BODY CONTROL MODULE (BCM) DTCs AGAIN •  Clear the DTC recorded in the memory. (See CLEARING DTC.) •  Perform the DTC inspection for the body control module (BCM). (See DTC INSPECTION.) •  Is the same Pending DTC present?	Yes	Go to the next step.
		No	Go to repair completion verification 2.
2	INSPECT EMERGENCY CALL UNIT FOR MALFUNCTION •  Perform the DTC inspection for the emergency call unit. (See DTC INSPECTION.) •  Is a DTC displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [EMERGENCY CALL UNIT].)
		No	Go to the next step.
3	INSPECT EMERGENCY CALL UNIT CONNECTOR FOR MALFUNCTION •  Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION.) •  Are the connector and terminal normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification.
4	INSPECT DOOR-ELECTRICAL SUPPLY UNIT (PASSENGER’S SIDE) CONNECTOR FOR MALFUNCTION •  Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION.) •  Are the connector and terminal normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification.
5	INSPECT EMERGENCY CALL UNIT SIGNAL CIRCUIT FOR SHORT TO GROUND •  Inspect the applicable circuit for a short to ground. (See CIRCUIT INSPECTION.) •  Is the circuit normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification.
6	INSPECT EMERGENCY CALL UNIT SIGNAL CIRCUIT FOR OPEN CIRCUIT •  Inspect the applicable circuit for an open circuit. (See CIRCUIT INSPECTION.) •  Is the circuit normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification.
7	INSPECT EMERGENCY CALL UNIT FOR MALFUNCTION DEPENDING ON REPEATABILITY •  Install/connect the part removed/disconnected during the troubleshooting procedure. •  Clear the DTC recorded in the memory. (See CLEARING DTC.) •  Perform the DTC inspection for the body control module (BCM). (See DTC INSPECTION.) •  Is the same Pending DTC present?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].) If the CAN communication is normal, replace the emergency call unit and perform the repair completion verification. (See EMERGENCY CALL UNIT REMOVAL/INSTALLATION.)
		No	Go to repair completion verification 2.
8	INSPECT DOOR-ELECTRICAL SUPPLY UNIT (PASSENGER’S SIDE) FOR MALFUNCTION DEPENDING ON REPEATABILITY •  Install/connect the part removed/disconnected during the troubleshooting procedure. •  Clear the DTC recorded in the memory. (See CLEARING DTC.) •  Perform the DTC inspection for the body control module (BCM). (See DTC INSPECTION.) •  Is the same Pending DTC present?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].) If the CAN communication is normal, replace the door-electrical supply unit (passenger’s side) and perform the repair completion verification. (See DOOR-ELECTRICAL SUPPLY UNIT REMOVAL/INSTALLATION.)
		No	Go to repair completion verification 2.
Repair completion verification 1	VERIFY THAT VEHICLE IS REPAIRED •  Install/connect the part removed/disconnected during the troubleshooting procedure. •  Clear the DTC recorded in the memory. (See CLEARING DTC.) •  Perform the DTC inspection for the body control module (BCM). (See DTC INSPECTION.) •  Is the same Pending DTC present?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].) If the CAN communication is normal, perform the diagnosis from Step 1. •  If the malfunction recurs, replace the body control module (BCM), then go to the next step. (See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION [(E)].)
		No	Go to the next step.
Repair completion verification 2	VERIFY IF OTHER DTC IS DISPLAYED •  Perform the DTC inspection. (See DTC INSPECTION.) •  Are any other DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
		No	DTC troubleshooting completed.

L.H.D. (With Mazda EMERGENCY ASSISTANCE)

Outline

System malfunction location	Collision signal error
Detection condition	•  The door-electrical supply unit (passenger’s side) received error signal from Mazda EMERGENCY ASSISTANCE control module.
Fail-safe	Not applicable
Possible cause	•  DTCs are stored in the Mazda EMERGENCY ASSISTANCE control module. •  Mazda EMERGENCY ASSISTANCE control module connector or terminal malfunction •  Door-electrical supply unit (passenger’s side) connector or terminal malfunction •  Short to ground in Mazda EMERGENCY ASSISTANCE control module signal circuit •  Open circuit in Mazda EMERGENCY ASSISTANCE control module signal circuit •  Mazda EMERGENCY ASSISTANCE control module malfunction •  Door-electrical supply unit (passenger’s side) malfunction •  Body control module (BCM) malfunction

Diagnostic Procedure

Step	Inspection	Results	Action
1	VERIFY BODY CONTROL MODULE (BCM) DTCs AGAIN •  Clear the DTC recorded in the memory. (See CLEARING DTC.) •  Perform the DTC inspection for the body control module (BCM). (See DTC INSPECTION.) •  Is the same Pending DTC present?	Yes	Go to the next step.
		No	Go to repair completion verification 2.
2	INSPECT Mazda EMERGENCY ASSISTANCE CONTROL MODULE FOR MALFUNCTION •  Perform the DTC inspection for the Mazda EMERGENCY ASSISTANCE control module. (See DTC INSPECTION.) •  Is a DTC displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
		No	Go to the next step.
3	INSPECT Mazda EMERGENCY ASSISTANCE CONTROL MODULE CONNECTOR FOR MALFUNCTION •  Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION.) •  Are the connector and terminal normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification.
4	INSPECT DOOR-ELECTRICAL SUPPLY UNIT (PASSENGER’S SIDE) CONNECTOR FOR MALFUNCTION •  Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION.) •  Are the connector and terminal normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification.
5	INSPECT Mazda EMERGENCY ASSISTANCE CONTROL MODULE SIGNAL CIRCUIT FOR SHORT TO GROUND •  Inspect the applicable circuit for a short to ground. (See CIRCUIT INSPECTION.) •  Is the circuit normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification.
6	INSPECT Mazda EMERGENCY ASSISTANCE CONTROL MODULE SIGNAL CIRCUIT FOR OPEN CIRCUIT •  Inspect the applicable circuit for an open circuit. (See CIRCUIT INSPECTION.) •  Is the circuit normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification.
7	INSPECT Mazda EMERGENCY ASSISTANCE CONTROL MODULE FOR MALFUNCTION DEPENDING ON REPEATABILITY •  Install/connect the part removed/disconnected during the troubleshooting procedure. •  Clear the DTC recorded in the memory. (See CLEARING DTC.) •  Perform the DTC inspection for the body control module (BCM). (See DTC INSPECTION.) •  Is the same Pending DTC present?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].) If the CAN communication is normal, replace the Mazda EMERGENCY ASSISTANCE control module and perform the repair completion verification.
		No	Go to repair completion verification 2.
8	INSPECT DOOR-ELECTRICAL SUPPLY UNIT (PASSENGER’S SIDE) FOR MALFUNCTION DEPENDING ON REPEATABILITY •  Install/connect the part removed/disconnected during the troubleshooting procedure. •  Clear the DTC recorded in the memory. (See CLEARING DTC.) •  Perform the DTC inspection for the body control module (BCM). (See DTC INSPECTION.) •  Is the same Pending DTC present?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].) If the CAN communication is normal, replace the door-electrical supply unit (passenger’s side) and perform the repair completion verification. (See DOOR-ELECTRICAL SUPPLY UNIT REMOVAL/INSTALLATION.)
		No	Go to repair completion verification 2.
Repair completion verification 1	VERIFY THAT VEHICLE IS REPAIRED •  Install/connect the part removed/disconnected during the troubleshooting procedure. •  Clear the DTC recorded in the memory. (See CLEARING DTC.) •  Perform the DTC inspection for the body control module (BCM). (See DTC INSPECTION.) •  Is the same Pending DTC present?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].) If the CAN communication is normal, perform the diagnosis from Step 1. •  If the malfunction recurs, replace the body control module (BCM), then go to the next step. (See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION [(E)].)
		No	Go to the next step.
Repair completion verification 2	VERIFY IF OTHER DTC IS DISPLAYED •  Perform the DTC inspection. (See DTC INSPECTION.) •  Are any other DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
		No	DTC troubleshooting completed.