DTC U3003:17 [MAZDA ERA-GLONASS CONTROL MODULE]

id0902r6083900

Description	Mazda ERA-GLONASS control module power supply voltage high input
Detection condition	• The Mazda ERA-GLONASS control module power supply voltage of 16 V or more is detected with the ignition switched ON (engine off or on).
Fail-safe	Not applicable
Possible cause	• DTCs are stored in the PCM. • Battery malfunction • Generator malfunction • Mazda ERA-GLONASS control module malfunction
System wiring diagram	Not applicable

Diagnostic Procedure

Step	Inspection		Action
1	VERIFY MAZDA ERA-GLONASS CONTROL MODULE DTCs AGAIN • Clear the DTC for the Mazda ERA-GLONASS control module using the M-MDS. (See CLEARING DTC [MAZDA ERA-GLONASS CONTROL MODULE]) • Switch the ignition ON (engine off or on) and wait for 25 s or more. • Perform the DTC inspection for the Mazda ERA-GLONASS control module using the M-MDS. (See DTC INSPECTION [MAZDA ERA-GLONASS CONTROL MODULE]) • Is the same DTC displayed?	Yes	Go to the next step.
1		No	Go to Step 6.
2	VERIFY PCM DTCs • Retrieve the PCM DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.5T)].) • Are any DTCs displayed?	Yes	Repair or replace the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [PCM (SKYACTIV-G 2.5T)].)
2		No	Go to the next step.
3	INSPECT BATTERY • Inspect the battery. (See BATTERY INSPECTION.) • Is the battery normal?	Yes	Go to the next step.
3		No	Recharge or replace the battery, then go to the next step. (See BATTERY REMOVAL/INSTALLATION.)
4	INSPECT GENERATOR • Inspect the generator. (See GENERATOR INSPECTION [WITHOUT i-ELOOP (SKYACTIV-G 2.5T)].) • Is the generator normal?	Yes	Go to the next step.
4		No	Replace the generator, then go to the next step. (See GENERATOR REMOVAL/INSTALLATION [WITHOUT i-ELOOP (SKYACTIV-G 2.5T)].)
5	VERIFY THAT REPAIRS HAVE BEEN COMPLETED • Always reconnect all disconnected connectors. • Reconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Clear the DTC for the Mazda ERA-GLONASS control module using the M-MDS. (See CLEARING DTC [MAZDA ERA-GLONASS CONTROL MODULE]) • Switch the ignition ON (engine off or on) and wait for 25 s or more. • Perform the DTC inspection for the Mazda ERA-GLONASS control module using the M-MDS. (See DTC INSPECTION [MAZDA ERA-GLONASS CONTROL MODULE]) • Is the same DTC displayed?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the Mazda ERA-GLONASS control module. (See MAZDA ERA-GLONASS CONTROL MODULE REMOVAL/INSTALLATION.) Go to the next step.
5		No	Go to the next step.
6	VERIFY IF OTHER DTCs DISPLAYED • Are any other DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [MAZDA ERA-GLONASS CONTROL MODULE])
6		No	DTC troubleshooting completed.