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	VERIFY REAR BODY CONTROL MODULE (RBCM) DTCs AGAIN Clear rear body control module (RBCM) DTCs using the M-MDS. (See CLEARING DTC [REAR BODY CONTROL MODULE (RBCM)] .) Perform the DTC inspection for the rear body control module (RBCM) using the M-MDS. (See DTC INSPECTION [REAR BODY CONTROL MODULE (RBCM)] .) Is DTC B1174:13 displayed?	Yes	Go to the next step.
1		No	Go to Step 8.
2	INSPECT FRONT DOOR LATCH AND LOCK ACTUATOR (RH) CONNECTOR Switch the ignition to off. Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .) Disconnect the front door latch and lock actuator (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.
2		No	Repair or replace the connector, then go to Step 7.
3	INSPECT FOR OPEN CIRCUIT IN FRONT DOOR LOCK-LINK SWITCH (RH) GROUND CIRCUIT Verify that the front door latch and lock actuator (RH) connector is disconnected. Inspect the wiring harness between front door latch and lock actuator (RH) terminal D (vehicle wiring harness side) and body ground for continuity. Is there continuity?	Yes	Go to the next step.
3		No	Repair or replace the wiring harness which has an open circuit, then go to Step 7.
4	INSPECT FRONT DOOR LOCK-LINK SWITCH (RH) Inspect the front door lock-link switch (RH). (See DOOR LOCK-LINK SWITCH INSPECTION .) Is the front door lock-link switch (RH) normal?	Yes	Go to the next step.
4		No	Replace the front door latch and lock actuator (RH), then go to Step 7. (See FRONT DOOR LATCH AND LOCK ACTUATOR REMOVAL/INSTALLATION .)
5	INSPECT REAR BODY CONTROL MODULE (RBCM) CONNECTOR CONDITION Disconnect the rear body control module (RBCM) 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.
5		No	Repair or replace the connector, then go to Step 7.
6	INSPECT FRONT DOOR LOCK-LINK SWITCH (RH) CIRCUIT FOR OPEN CIRCUIT Verify that the rear body control module (RBCM) connector and front door latch and lock actuator (RH) connector are disconnected. Inspect the wiring harness between rear body control module (RBCM) terminal 3J (vehicle wiring harness side) and front door latch and lock actuator (RH) terminal L (vehicle wiring harness side) for continuity. Is there continuity?	Yes	Go to the next step.
6		No	Repair or replace the wiring harness which has an open circuit, then go to the next step.
7	VERIFY THAT REPAIRS HAVE BEEN COMPLETED Reconnect all the disconnected connectors. Reconnect the disconnected negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .) Clear rear body control module (RBCM) DTCs using the M-MDS. (See CLEARING DTC [REAR BODY CONTROL MODULE (RBCM)] .) Perform the DTC inspection for the rear body control module (RBCM) using the M-MDS. (See DTC INSPECTION [REAR BODY CONTROL MODULE (RBCM)] .) Is DTC B1174:13 displayed?	Yes	Repeat the inspection from Step 1. If the malfunction recurs, replace the rear body control module (RBCM), then go to the next step. (See REAR BODY CONTROL MODULE (RBCM) REMOVAL/INSTALLATION .)
7		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 [REAR BODY CONTROL MODULE (RBCM)] .)
8		No	DTC troubleshooting completed.

Step	Inspection		Action
1	VERIFY REAR BODY CONTROL MODULE (RBCM) DTCs AGAIN Clear rear body control module (RBCM) DTCs using the M-MDS. (See CLEARING DTC [REAR BODY CONTROL MODULE (RBCM)] .) Perform the DTC inspection for the rear body control module (RBCM) using the M-MDS. (See DTC INSPECTION [REAR BODY CONTROL MODULE (RBCM)] .) Is DTC B1174:13 displayed?	Yes	Go to the next step.
1		No	Go to Step 14.
2	INSPECT FRONT DOOR LATCH AND LOCK ACTUATOR (RH) CONNECTOR Switch the ignition to off. Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .) Disconnect the front door latch and lock actuator (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.
2		No	Repair or replace the connector, then go to Step 13.
3	INSPECT FOR OPEN CIRCUIT IN FRONT DOOR LOCK-LINK SWITCH (RH) GROUND CIRCUIT Verify that the front door latch and lock actuator (RH) connector is disconnected. Inspect the wiring harness between front door latch and lock actuator (RH) terminal D (vehicle wiring harness side) and body ground for continuity. Is there continuity?	Yes	Go to the next step.
3		No	Repair or replace the wiring harness which has an open circuit, then go to Step 13.
4	INSPECT FRONT DOOR LOCK-LINK SWITCH (RH) Inspect the front door lock-link switch (RH). (See DOOR LOCK-LINK SWITCH INSPECTION .) Is the front door lock-link switch (RH) normal?	Yes	Go to the next step.
4		No	Replace the front door latch and lock actuator (RH), then go to Step 13. (See FRONT DOOR LATCH AND LOCK ACTUATOR REMOVAL/INSTALLATION .)
5	INSPECT REAR DOOR LATCH AND LOCK ACTUATOR (LH) CONNECTOR Disconnect the rear door latch and lock actuator (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.
5		No	Repair or replace the connector, then go to Step 13.
6	INSPECT FOR OPEN CIRCUIT IN REAR DOOR LOCK-LINK SWITCH (LH) GROUND CIRCUIT Verify that the rear door latch and lock actuator (LH) connector is disconnected. Inspect the wiring harness for continuity between rear door latch and lock actuator (LH) terminal J (vehicle wiring harness side) and body ground. Is there continuity?	Yes	Go to the next step.
6		No	Repair or replace the wiring harness which has an open circuit, then go to Step 13.
7	INSPECT REAR DOOR LOCK-LINK SWITCH (LH) Inspect the rear door lock-link switch (LH). (See DOOR LOCK-LINK SWITCH INSPECTION .) Is the rear door lock-link switch (LH) normal?	Yes	Go to the next step.
7		No	Replace the rear door latch and lock actuator (LH), then go to Step 13. (See REAR DOOR LATCH AND LOCK ACTUATOR REMOVAL/INSTALLATION .)
8	INSPECT REAR DOOR LATCH AND LOCK ACTUATOR (RH) CONNECTOR Disconnect the rear door latch and lock actuator (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.
8		No	Repair or replace the connector, then go to Step 13.
9	INSPECT FOR OPEN CIRCUIT IN REAR DOOR LOCK-LINK SWITCH (RH) GROUND CIRCUIT Verify that the rear door latch and lock actuator (RH) connector is disconnected. Inspect the wiring harness for continuity between rear door latch and lock actuator (RH) terminal D (vehicle wiring harness side) and body ground. Is there continuity?	Yes	Go to the next step.
9		No	Repair or replace the wiring harness which has an open circuit, then go to Step 13.
10	INSPECT REAR DOOR LOCK-LINK SWITCH (RH) Inspect the rear door lock-link switch (RH). (See DOOR LOCK-LINK SWITCH INSPECTION .) Is the rear door lock-link switch (RH) normal?	Yes	Go to the next step.
10		No	Replace the rear door latch and lock actuator (RH), then go to Step 13. (See REAR DOOR LATCH AND LOCK ACTUATOR REMOVAL/INSTALLATION .)
11	INSPECT REAR BODY CONTROL MODULE (RBCM) CONNECTOR CONDITION Disconnect the rear body control module (RBCM) 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.
11		No	Repair or replace the connector, then go to Step 13.
12	INSPECT FRONT DOOR LOCK-LINK SWITCH (RH)/REAR DOOR LINK SWITCH (LH)/(RH) CIRCUIT FOR OPEN CIRCUIT Verify that the rear body control module (RBCM) connector, front door latch and lock actuator (RH) connector, rear door latch and lock actuator (LH) connector, and rear door latch and lock actuator (RH) connector are disconnected. Inspect the wiring harness between the following terminals (vehicle wiring harness side) for continuity. Rear body control module (RBCM) terminal 3J and front door latch and lock actuator (RH) terminal L Rear body control module (RBCM) terminal 3J and rear door latch and lock actuator (LH) terminal B Rear body control module (RBCM) terminal 3J and rear door latch and lock actuator (RH) terminal L Is there continuity?	Yes	Go to the next step.
12		No	Repair or replace the wiring harness which has an open circuit, then go to the next step.
13	VERIFY THAT REPAIRS HAVE BEEN COMPLETED Reconnect all the disconnected connectors. Reconnect the disconnected negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .) Clear rear body control module (RBCM) DTCs using the M-MDS. (See CLEARING DTC [REAR BODY CONTROL MODULE (RBCM)] .) Perform the DTC inspection for the rear body control module (RBCM) using the M-MDS. (See DTC INSPECTION [REAR BODY CONTROL MODULE (RBCM)] .) Is DTC B1174:13 displayed?	Yes	Repeat the inspection from Step 1. If the malfunction recurs, replace the rear body control module (RBCM), then go to the next step. (See REAR BODY CONTROL MODULE (RBCM) REMOVAL/INSTALLATION .)
13		No	Go to the next step.
14	VERIFY IF OTHER DTCs DISPLAYED Are any other DTCs displayed?	Yes	Repair the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [REAR BODY CONTROL MODULE (RBCM)] .)
14		No	DTC troubleshooting completed.