Mazda 3 manuals

Mazda 3 Service Manual: Keyless Control Module Inspection

Mazda 3 Service Manual / Accessories / Security & Keyless Entry / Keyless Control Module Inspection

1. Remove the following parts:

a. Passenger-side front scuff plate.

b. Passenger-side front side trim.

c. Grove compartment.

d. Passenger-side lower panel.

2. Measure the voltage according to the terminal voltage table.

Terminal Voltage Table (Reference)



Terminal

Signal name

Connected to

Measurement condition

Voltage (V)

Inspection item (s)

1E

Power supply

ROOM 15 A fuse

Under any condition

B+

ROOM 15 A fuse

Battery

BCM

1F

Power supply

ENG+B 10 A fuse

Under any condition

B+

ENG+B 10 A fuse

Battery

2A

Power supply

METER 15 A fuse

Switch the ignitions to ON

B+

IG1 relay

METER 15 A fuse

Battery

Switch the ignitions to off or ACC

1.0 or less

2B

Push button start

Push button start

Push button start is pushed

1.0 or less

Push button start

Push button start is not pushed

B+

2C

Power supply

MIRROR 10 A fuse

Switch the ignitions to ACC

B+

ACC relay

MIRROR 10 A fuse

Battery

Switch the ignitions to off

1.0 or less

2E

Power supply

HEATER 10 A fuse

Switch the ignitions to ON

B+

IG2 relay

HEATER 10 A fuse

Battery

Switch the ignitions to off or ACC

1.0 or less

2F

Starter monitor

Starter relay

Switch the ignitions to off

Clutch pedal is not depressed (MTX)

Wave pattern 1.

Starter relay

Shift position is not P or N range (ATX)

Clutch pedal is depressed (MTX)

Wave pattern 2.

Shift position is P or N range (ATX)

Switch the ignitions to ON

Clutch pedal is not depressed (MTX)

B+

Shift position is not P or N range (ATX)

Clutch pedal is depressed (MTX)

1.0 or less

Shift position is P or N range (ATX)

2G

Tx-PATS

Coil antenna

Communication lines, cannot be determined by voltage only (B+ when not communicating)

B+

Coil antenna

2H

Rx-PATS

Coil antenna

Communication lines, cannot be determined by voltage only (B+ when not communicating)

B+

Coil antenna

2K

HS-CAN+

-

Terminal used for communication therefore determination based on terminal voltage inspection not possible.

2L

HS-CAN-

-

Terminal used for communication therefore determination based on terminal voltage inspection not possible.

3B

Starter relay

Starter relay

Cranking

B+

Starter relay

Switch the ignitions to off

Clutch pedal is not depressed (MTX)

Wave pattern 1.

Shift position is not P or N range (ATX)

Clutch pedal is depressed (MTX)

Wave pattern 2.

Shift position is P or N range (ATX)

Switch the ignitions to ON

Clutch pedal is not depressed (MTX)

B+

Shift position is not P or N range (ATX)

Clutch pedal is depressed (MTX)

1.0 or less

Shift position is P or N range (ATX)

3C

GND

Body ground

Under any condition

1.0 or less

Body ground

3D

IG 1 relay control

IG 1 Relay

Switch the ignitions to ON

B+

IG 1 Relay

Switch the ignitions to off or ACC

1.0 or less

3F

Push button illumination (ON)

Push button start

Switch the ignitions to off

Clutch pedal (MTX)/Brake pedal (ATX) is depressed

1.0 or less

Push button start

Push button start is pushed

3G

IG 2 relay control

IG 2 Relay

Switch the ignitions to ON

B+

IG 2 Relay

Switch the ignitions to off or ACC

1.0 or less

3H

Push button illumination (Umber)

Push button start

System is malfunctioning

1.0 or less

Push button start

Other

B+

3I

Push button illumination (green)

Push button start

Engine start is available

1.0 or less

Push button start

Other

B+

3J

ACC relay control

ACC Relay

Switch the ignitions to ACC

B+

ACC Relay

Switch the ignitions to off

1.0 or less

3K

Push button illumination (ACC)

Push button start

In the case of ACC

1.0 or less

Push button start

Case except the ACC

B+

3M

Power supply

Coil antenna

Communication lines, cannot be determined by voltage only (B+ when not communicating)

B+

Coil antenna

3O*1

Starter interlock switch

Starter interlock switch

Clutch pedal is not depressed

B+

Starter interlock switch

Clutch pedal is depressed

1.0 or less

3Q

Push button start

Push button start

Push button start is pushed

1.0 or less

Push button start

Push button start is not pushed

B+

3R

Brake switch

Brake switch

Brake pedal is depressed

B+

Brake switch

Brake pedal is not depressed

1.0 or less

3S*2

P position

P position switch

Shift position is P

B+

P position switch

Other

1.0 or less

3T

Starter cut relay

(MTX)

Starter cut relay

Switch the ignitions to off

Clutch pedal is depressed

Wave pattern 2.

Starter cut relay

Shift position is P or N range

TR switch

(ATX)

TR switch

Clutch pedal is not depressed

1.0 or less

TR switch

Shift position is not P or N range

3U

Key reminder switch signal

Key reminder switch

Key inserted in steering lock

B+

Key reminder switch

Other

1.0 or less

3V

Power supply

Keyless receiver

Under any condition

B+

Keyless receiver

3W

Keyless entry communication

Keyless receiver

Terminal used for communication therefore determination based on terminal voltage inspection not possible.

3X

BCM communication

BCM

Communication lines, cannot be determined by voltage only (B+ when not communicating)

B+

BCM

3Z

Keyless antenna (interior, front)

Keyless antenna (interior, front)

Terminal used for communication therefore determination based on terminal voltage inspection not possible.

3AA

Keyless entry communication

Keyless receiver

Terminal used for communication therefore determination based on terminal voltage inspection not possible.

3AC

Keyless antenna (interior, front)

Keyless antenna (interior, front)

Terminal used for communication therefore determination based on terminal voltage inspection not possible.

3AD

GND

Body ground

Under any condition

1.0 or less

Body ground

4A

Keyless antenna (RF)

Keyless antenna (RF)

Terminal used for communication therefore determination based on terminal voltage inspection not possible.

4B

Keyless antenna (LF)

Keyless antenna (LF)

Terminal used for communication therefore determination based on terminal voltage inspection not possible.

4C

Keyless antenna (exterior, rear)

Keyless antenna (exterior, rear)

Terminal used for communication therefore determination based on terminal voltage inspection not possible.

4D

Keyless antenna (RF)

Keyless antenna (RF)

Terminal used for communication therefore determination based on terminal voltage inspection not possible.

4E

Keyless antenna (LF)

Keyless antenna (LF)

Terminal used for communication therefore determination based on terminal voltage inspection not possible.

4F

Keyless antenna (exterior, rear)

Keyless antenna (exterior, rear)

Terminal used for communication therefore determination based on terminal voltage inspection not possible.

4G

Keyless antenna (interior, rear)

Keyless antenna (interior, rear)

Terminal used for communication therefore determination based on terminal voltage inspection not possible.

4I

GND

Body ground

Under any condition

1.0 or less

Body ground

4J

Keyless antenna (interior, rear)

Keyless antenna (interior, rear)

Terminal used for communication therefore determination based on terminal voltage inspection not possible.

4L

Keyless beeper power supply

Keyless beeper

Exterior keyless beeper sounds

5.0 or more

Keyless beeper

Other

1.0 or less

4O

Request switch input

(passenger's door)

Request switch (RF)

Passenger's side request switch ON

1.0 or less

Front outer handle (passenger's door)

Passenger's side request switch OFF

4.0 or more

4R

Request switch input

(driver's door)

Request switch (LF)

Driver's side request switch ON

1.0 or less

Front outer handle (driver's door)

Driver's side request switch OFF

4.0 or more

4S

Trunk lid/liftgate release input

Trunk lid/liftgate opener switch

Trunk lid/liftgate opener switch pressed

3.0 or more

Trunk lid opener switch

Liftgate opener switch

Trunk lid/liftgate opener switch released

1.0 or less

4T*3

Request switch input

(Liftgate)

Request switch (Liftgate)

Liftgate request switch ON

1.0 or less

Request switch (Liftgate)

Liftgate request switch OFF

4.0 or more

4U

Lock input

Door lock-link switch (driver's door)

Driver's side door lock switch at LOCK

1.0 or less

Door lock-link switch

Driver's side door lock switch at UNLOCK

Wave pattern.

4V*1

Clutch pedal position switch

Clutch pedal position switch

Clutch pedal is depressed

1.0 or less

Clutch pedal position switch

Clutch pedal is not depressed

B+

4W

Brake switch

Brake switch

Brake pedal is depressed

B+

Brake switch

Brake pedal is not depressed

1.0 or less

4X*1

Neutral switch

Neutral switch

Shift lever is in neutral position

1.0 or less

Neutral switch

Shift lever is not in neutral position

B+

4Z

GND

Keyless beeper

Under any condition

1.0 or less

Keyless beeper

4AA

GND

Body ground

Under any condition

1.0 or less

Body ground


*1 MTX

*2 ATX

*3 5HB

Generated pulse (reference)

Pattern 1


Pattern 2


Pattern 3


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