Diagnostic Procedure

DTC U2050:55 (MAZDA EMERGENCY ASSISTANCE CONTROL MODULE) DIAGNOSTIC PROCEDURE

Step	Inspection	Results	Action
1	ACTIVATION OF REMOTE CONTROL Switch the ignition ON (engine off). Implement the [Activating Remote Control by Smart Phone] using the M-MDS.	-	Go to the next step.
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 Mazda EMERGENCY ASSISTANCE control module. (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 [(US)] .) If the CAN communication is normal, perform the diagnosis from Step 1. If the malfunction recurs, replace the Mazda EMERGENCY ASSISTANCE control module, then go to the next step. (See Mazda EMERGENCY ASSISTANCE CONTROL MODULE REMOVAL/INSTALLATION .)
Repair completion verification 1		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.
Repair completion verification 2		No	DTC troubleshooting completed.