MAZDA ERA-GLONASS CONTROL MODULE INSPECTION

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1. Set the wheel blocks for both the front and rear wheels (without electric parking brake).

2. Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [MZR 1.6].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].)

3. Shift the selector lever from the P position to the D position (ATX).

4. Remove the following parts:

(1) Passenger-side front scuff plate (See FRONT SCUFF PLATE REMOVAL/INSTALLATION.)

(2) Passenger-side side trim (See FRONT SIDE TRIM REMOVAL/INSTALLATION.)

(3) Upper panel (See UPPER PANEL REMOVAL.) (See UPPER PANEL INSTALLATION.)

(4) Rear console (See REAR CONSOLE REMOVAL/INSTALLATION.)

(5) Shift lever knob (MTX) (See MANUAL TRANSAXLE SHIFT MECHANISM REMOVAL/INSTALLATION [F35M-R].) (See MANUAL TRANSAXLE SHIFT MECHANISM REMOVAL/INSTALLATION [C66M-R].) (See MANUAL TRANSAXLE SHIFT MECHANISM REMOVAL/INSTALLATION [D66M-R].) (See MANUAL TRANSAXLE SHIFT MECHANISM REMOVAL/INSTALLATION [F66M-R].)

(6) Selector lever knob (ATX) (See AUTOMATIC TRANSAXLE SHIFT MECHANISM REMOVAL/INSTALLATION.)

(7) Shift panel (See SHIFT PANEL REMOVAL/INSTALLATION.)

(8) Front console box (without electric parking brake) (See FRONT CONSOLE BOX REMOVAL/INSTALLATION.)

(9) CD player (with CD player) (See CD PLAYER REMOVAL.) (See CD PLAYER INSTALLATION.)

(10) DVD/CD player (with DVD/CD player) (See DVD/CD PLAYER REMOVAL.) (See DVD/CD PLAYER INSTALLATION.)

(11) Glove compartment (See GLOVE COMPARTMENT REMOVAL/INSTALLATION.)

(12) Decoration panel (See DECORATION PANEL REMOVAL/INSTALLATION.)

(13) Side wall (See SIDE WALL REMOVAL/INSTALLATION.)

(14) Front console (See FRONT CONSOLE REMOVAL/INSTALLATION.)

(15) floor insulator (See FLOOR INSULATOR REMOVAL/INSTALLATION.)

(16) Spacer (See MAZDA ERA-GLONASS CONTROL MODULE REMOVAL/INSTALLATION.)

(17) Cover (See MAZDA ERA-GLONASS CONTROL MODULE REMOVAL/INSTALLATION.)

5. Measure the voltage at each terminal.

• If the voltage is not as specified in the terminal voltage table, inspect the parts under Inspection item (s) and related wiring harnesses.

― If the system does not work normally even though the inspection items or related wiring harnesses do not have any malfunction, replace the mazda era-glonass control module. (See MAZDA ERA-GLONASS CONTROL MODULE REMOVAL/INSTALLATION.)

Terminal Voltage Table (Reference)

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Terminal

Signal name

Connected to

Measurement conditions

Voltage (V)

Inspection item(s)

1A

IND1+

Mazda era-glonass switch

Under any condition

Approx. 5

•  Mazda era-glonass switch

•  Mazda era-glonass control module

1B

SW+

Mazda era-glonass switch

Under any condition

Approx. 5

•  Mazda era-glonass switch

•  Mazda era-glonass control module

1C

IND2+

Mazda era-glonass switch

Under any condition

Approx. 5

•  Mazda era-glonass switch

•  Mazda era-glonass control module

1D

SW/IND-

Mazda era-glonass switch

Under any condition

1.0 or less

•  Mazda era-glonass switch

•  Mazda era-glonass control module

1E

MIC_PWR

Microphone

Under any condition

Approx. 8

•  Microphone

•  Mazda era-glonass control module

1F

MIC_SENCE_IN

Microphone

Under any condition

1.0 or less

•  Microphone

•  Mazda era-glonass control module

1G

MIC_IN+

Microphone

Because this terminal is for communication, determination using terminal voltage inspection is not possible.

1H

MIC_SENCE_OUT

Connectivity master unit

Under any condition

1.0 or less

•  Connectivity master unit

•  Mazda era-glonass control module

1I

MIC_IN-

Microphone

Because this terminal is for communication, determination using terminal voltage inspection is not possible.

1J

MIC_GND

Microphone

Under any condition

1.0 or less

•  Microphone

•  Mazda era-glonass control module

1K

MIC_OUT+

Connectivity master unit

Because this terminal is for communication, determination using terminal voltage inspection is not possible.

1L

SP_OUT-

Mazda era-glonass speaker

Because this terminal is for communication, determination using terminal voltage inspection is not possible.

1M

MIC_OUT-

Connectivity master unit

Because this terminal is for communication, determination using terminal voltage inspection is not possible.

1N

SP_OUT+

Mazda era-glonass speaker

Because this terminal is for communication, determination using terminal voltage inspection is not possible.

1O

GND1

Body ground

Under any condition

1.0 or less

Body ground

1P

—

—

—

—

—

1Q

HS CAN_H

CAN system related module

Because this terminal is for communication, determination using terminal voltage inspection is not possible.

1R

GND3

Body ground

Under any condition

1.0 or less

Body ground

1S

HS CAN_L

CAN system related module

Because this terminal is for communication, determination using terminal voltage inspection is not possible.

1T

GND4

Body ground

Under any condition

1.0 or less

Body ground

1U

GND2

Body ground

Under any condition

1.0 or less

Body ground

1V

—

—

—

—

—

1W

—

—

—

—

—

1X

ACC_IN1

AUDIO2 7.5A fuse

Ignition switched ON (engine off) or ACC

B+

AUDIO2 7.5A fuse

Other

1.0 or less

1Y

—

—

—

—

—

1Z

ACC_OUT1

•  Audio unit

•  Tuner and amp unit (TAU)

Ignition switched ON (engine off) or ACC

B+

•  Audio unit

•  Tuner and amp unit (TAU)

•  AUDIO2 7.5A fuse

Other

1.0 or less

1AA

ENS2_IN

SAS control module

Because this terminal is for communication, determination using terminal voltage inspection is not possible.

1AB

ACC_IN2

AUDIO2 7.5A fuse

Ignition switched ON (engine off) or ACC

B+

AUDIO2 7.5A fuse

Other

1.0 or less

1AC

ENS2_OUT

Rear body control module (RBCM)

Because this terminal is for communication, determination using terminal voltage inspection is not possible.

1AD

ACC_OUT2

•  CD player

•  AUDIO2 7.5A fuse

Ignition switched ON (engine off) or ACC

B+

•  CD player

•  AUDIO2 7.5A fuse

Other

1.0 or less

1AE

IG1

SRS1 7.5A fuse

Switch the ignition ON (engine on or off)

B+

SRS1 7.5A fuse

Switch the ignition OFF (LOCK)

1.0 or less

1AF

+B

ROOM 15 A fuse

Under any condition

B+

•  ROOM 15 A fuse

•  Battery

2A

GNSS_SIG

Mazda era-glonass antenna

Because this terminal is for communication, determination using terminal voltage inspection is not possible.

3A

TEL_SIG

Mazda era-glonass antenna

Because this terminal is for communication, determination using terminal voltage inspection is not possible.

Terminal	Signal name	Connected to	Measurement conditions	Voltage (V)	Inspection item(s)
1A	IND1+	Mazda era-glonass switch	Under any condition	Approx. 5	• Mazda era-glonass switch • Mazda era-glonass control module
1B	SW+	Mazda era-glonass switch	Under any condition	Approx. 5	• Mazda era-glonass switch • Mazda era-glonass control module
1C	IND2+	Mazda era-glonass switch	Under any condition	Approx. 5	• Mazda era-glonass switch • Mazda era-glonass control module
1D	SW/IND-	Mazda era-glonass switch	Under any condition	1.0 or less	• Mazda era-glonass switch • Mazda era-glonass control module
1E	MIC_PWR	Microphone	Under any condition	Approx. 8	• Microphone • Mazda era-glonass control module
1F	MIC_SENCE_IN	Microphone	Under any condition	1.0 or less	• Microphone • Mazda era-glonass control module
1G	MIC_IN+	Microphone	Because this terminal is for communication, determination using terminal voltage inspection is not possible.
1H	MIC_SENCE_OUT	Connectivity master unit	Under any condition	1.0 or less	• Connectivity master unit • Mazda era-glonass control module
1I	MIC_IN-	Microphone	Because this terminal is for communication, determination using terminal voltage inspection is not possible.
1J	MIC_GND	Microphone	Under any condition	1.0 or less	• Microphone • Mazda era-glonass control module
1K	MIC_OUT+	Connectivity master unit	Because this terminal is for communication, determination using terminal voltage inspection is not possible.
1L	SP_OUT-	Mazda era-glonass speaker	Because this terminal is for communication, determination using terminal voltage inspection is not possible.
1M	MIC_OUT-	Connectivity master unit	Because this terminal is for communication, determination using terminal voltage inspection is not possible.
1N	SP_OUT+	Mazda era-glonass speaker	Because this terminal is for communication, determination using terminal voltage inspection is not possible.
1O	GND1	Body ground	Under any condition	1.0 or less	Body ground
1P	—	—	—	—	—
1Q	HS CAN_H	CAN system related module	Because this terminal is for communication, determination using terminal voltage inspection is not possible.
1R	GND3	Body ground	Under any condition	1.0 or less	Body ground
1S	HS CAN_L	CAN system related module	Because this terminal is for communication, determination using terminal voltage inspection is not possible.
1T	GND4	Body ground	Under any condition	1.0 or less	Body ground
1U	GND2	Body ground	Under any condition	1.0 or less	Body ground
1V	—	—	—	—	—
1W	—	—	—	—	—
1X	ACC_IN1	AUDIO2 7.5A fuse	Ignition switched ON (engine off) or ACC	B+	AUDIO2 7.5A fuse
1X	ACC_IN1	AUDIO2 7.5A fuse	Other	1.0 or less	AUDIO2 7.5A fuse
1Y	—	—	—	—	—
1Z	ACC_OUT1	• Audio unit • Tuner and amp unit (TAU)	Ignition switched ON (engine off) or ACC	B+	• Audio unit • Tuner and amp unit (TAU) • AUDIO2 7.5A fuse
1Z	ACC_OUT1	• Audio unit • Tuner and amp unit (TAU)	Other	1.0 or less
1AA	ENS2_IN	SAS control module	Because this terminal is for communication, determination using terminal voltage inspection is not possible.
1AB	ACC_IN2	AUDIO2 7.5A fuse	Ignition switched ON (engine off) or ACC	B+	AUDIO2 7.5A fuse
1AB	ACC_IN2	AUDIO2 7.5A fuse	Other	1.0 or less	AUDIO2 7.5A fuse
1AC	ENS2_OUT	Rear body control module (RBCM)	Because this terminal is for communication, determination using terminal voltage inspection is not possible.
1AD	ACC_OUT2	• CD player • AUDIO2 7.5A fuse	Ignition switched ON (engine off) or ACC	B+	• CD player • AUDIO2 7.5A fuse
1AD	ACC_OUT2	• CD player • AUDIO2 7.5A fuse	Other	1.0 or less	• CD player • AUDIO2 7.5A fuse
1AE	IG1	SRS1 7.5A fuse	Switch the ignition ON (engine on or off)	B+	SRS1 7.5A fuse
1AE	IG1	SRS1 7.5A fuse	Switch the ignition OFF (LOCK)	1.0 or less	SRS1 7.5A fuse
1AF	+B	ROOM 15 A fuse	Under any condition	B+	• ROOM 15 A fuse • Battery
2A	GNSS_SIG	Mazda era-glonass antenna	Because this terminal is for communication, determination using terminal voltage inspection is not possible.
3A	TEL_SIG	Mazda era-glonass antenna	Because this terminal is for communication, determination using terminal voltage inspection is not possible.