Backup Power Supply Inspection

Remove the following parts:
1. Trunk covering (See TRUNK COVERING REMOVAL/INSTALLATION .)
2. Trunk board (See TRUNK BOARD REMOVAL/INSTALLATION .)
3. Trunk side pocket (LH) (See TRUNK SIDE POCKET REMOVAL/INSTALLATION .)
4. Trunk end trim (See TRUNK END TRIM REMOVAL/INSTALLATION .)
5. Rear scuff plate (LH) (See REAR SCUFF PLATE REMOVAL/INSTALLATION .)
6. Third-row seat cushion (See THIRD-ROW SEAT CUSHION REMOVAL/INSTALLATION .)
7. Third-row seat back component (See THIRD-ROW SEAT BACK COMPONENT REMOVAL/INSTALLATION .)
8. Trunk side trim (LH) (See TRUNK SIDE TRIM REMOVAL/INSTALLATION .)

Verify that the voltages of each of the terminals are as indicated in the terminal voltage table (reference).

If the voltage is not as specified in the terminal voltage table (reference), inspect the parts under Inspection item(s) and related wiring harnesses.
- If the system does not operate normally even though the inspection items are normal, replace the backup power supply. (See BACKUP POWER SUPPLY REMOVAL/INSTALLATION .)

G13702517

Courtesy of MAZDA MOTORS CORP.

TERMINAL VOLTAGE REFERENCE

Terminal	Signal name	Connected to	Test condition	Voltage (V)	Inspection item
A	Power supply	Rear body control module (RBCM)	Under any condition	B+	Rear body control module (RBCM) Related wiring harness
B	Power supply (IG1)	METER1 10 A fuse	Ignition switched ON (engine off or on)	B+	METER1 10 A fuse Related wiring harness
B	Power supply (IG1)	METER1 10 A fuse	Ignition switched OFF (LOCK)	1.0 or less	-
C	Power supply	D.LOCK 25 A fuse	Under any condition	B+	D.LOCK 25 A fuse Related wiring harness
D	-	-	-	-	-
E	-	-	-	-	-
F	-	-	-	-	-
G	-	-	-	-	-
H	GND	Body ground	Under any condition	1.0 or less	Body ground Related wiring harness
I	-	-	-	-	-
J	GND	Body ground	Under any condition	1.0 or less	Body ground Related wiring harness