KEYLESS CONTROL MODULE INSPECTION [R.H.D.]

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1.  Remove the following parts:

(1)  Front scuff plate (RH) (See FRONT SCUFF PLATE REMOVAL/INSTALLATION.)
(2)  Front side trim (RH) (See FRONT SIDE TRIM REMOVAL/INSTALLATION.)
(3)  Upper panel (See UPPER PANEL REMOVAL/INSTALLATION.)
(4)  Shift knob (MTX) (See MANUAL TRANSAXLE SHIFT MECHANISM REMOVAL/INSTALLATION.)
(5)  Selector lever knob (ATX/CVT) (See AUTOMATIC TRANSAXLE SHIFT MECHANISM REMOVAL/INSTALLATION.) (See CVT (CONTINUOUSLY VARIABLE TRANSAXLE) SHIFT MECHANISM REMOVAL/INSTALLATION.)
(6)  Shift panel (See SHIFT PANEL REMOVAL/INSTALLATION.)
(7)  Side wall (See SIDE WALL REMOVAL/INSTALLATION.)
(8)  Console (See CONSOLE REMOVAL/INSTALLATION.)

2.  Set the bonnet release lever out of the way. (See BONNET LATCH AND RELEASE LEVER REMOVAL/INSTALLATION.)

3.  Remove the lower panel. (driver-side) (See LOWER PANEL REMOVAL/INSTALLATION.)

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

•  If the voltages cannot be verified as indicated in the terminal voltage table, inspect the parts under “Inspection item (s)”.
―  If the system does not work normally even though the inspection items or related wiring harnesses do not have any malfunction, replace the keyless control module.


Terminal Voltage Table (Reference)

am3zzw00008733

Terminal

Signal name

Connected to

Measurement condition

Voltage (V)

Inspection item (s)
1A
Power supply
ESCL15 A fuse
Under any condition
B+
ESCL15 A fuse
Battery
1B
GND
Body ground
Under any condition
1.0 or less
Body ground
1C
Power supply
Steering lock unit
Steering lock unit During lock/unlock control
B+
Steering lock unit
Other
1.0 or less
1D
Steering lock unit ground
Steering lock unit
Steering lock unit During lock/unlock control
1.0 or less
Steering lock unit
Other
2.7 (Typical)
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 (MTX)
Starter relay
Switch the ignitions to off
Clutch pedal is not depressed
Wave pattern 1 (See. Pattern 1)
Starter relay
Clutch pedal is depressed
Wave pattern 2 (See.Pattern 2)
Switch the ignitions to ON
Clutch pedal is not depressed
B+
Clutch pedal is depressed
1.0 or less
Starter monitor (ATX)
Except SKYACTIV-G 2.0
Starter relay
Switch the ignitions to off
Shift position is not P or N range
Wave pattern 1 (See. Pattern 1)
Shift position is P or N range
Wave pattern 2 (See. Pattern 2)
Switch the ignitions to ON
Shift position is not P or N range
B+
Shift position is P or N range
1.0 or less
SKYACTIV-G 2.0
Starter relay
Switch the ignitions to off
Wave pattern 1 (See. Pattern 1)
Switch the ignitions to ON
Shift position is not P or N range
B+
Shift position is P or N range
1.0 or less
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
2I
Steering lock unit communication
Steering lock unit
Terminal used for communication therefore determination based on terminal voltage inspection not possible.
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 (MTX)
Starter relay
Cranking
B+
Starter relay
Switch the ignitions to off
Clutch pedal is not depressed
Wave pattern 1 (See. Pattern 1)
Clutch pedal is depressed
Wave pattern 2 (See. Pattern 2)
Switch the ignitions to ON
Clutch pedal is not depressed
B+
Clutch pedal is depressed
1.0 or less
Starter relay (ATX)
Except SKYACTIV-G 2.0
Starter relay
Cranking
B+
Switch the ignitions to off
Shift position is not P or N range
Wave pattern 1 (See. Pattern 1)
Shift position is P or N range
Wave pattern 2 (See. Pattern 2)
Switch the ignitions to ON
Shift position is not P or N range
B+
Shift position is P or N range
1.0 or less
SKYACTIV-G 2.0
Starter relay
Cranking
B+
Switch the ignitions to off
Wave pattern 1 (See. Pattern 1)
Switch the ignitions to ON
Shift position is not P or N range
B+
Shift position is P or N range
1.0 or less
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
Starter interlock switch
(MTX)
Starter interlock switch
Clutch pedal is not depressed
B+
Starter interlock switch
Clutch pedal is depressed
1.0 or less
Selector lever position signal
(SKYACTIV-G 2.0)
TCM
Shift position is not P or N range
B+
TCM
Shift position is P or N range
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 (See. Pattern 2)
Starter cut relay
Clutch pedal is not depressed
1.0 or less
TR switch
(ATX)
TR switch
Shift position is P or N range
Wave pattern 2 (See. Pattern 2)
TR switch
Shift position is not P or N range
1.0 or less
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 (See Pattern 3.)
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

am3uuw00006333
•  Terminal:
―  Starter relay: 2F (+) ↔ body ground (-)
―  Starter relay: 3B (+) ↔ body ground (-)
•  Oscilloscope setting: 2 V/DIV (Y), 100 ms/DIV (X), DC range


Pattern 2

am3zzw00009212
•  Terminal:
―  Starter relay: 2F (+) ↔ body ground (-)
―  Starter relay: 3B (+) ↔ body ground (-)
―  Starter cut relay/TR switch: 3T (+) ↔ body ground (-)
•  Oscilloscope setting: 2 V/DIV (Y), 100 ms/DIV (X), DC range


Pattern 3

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•  Terminal:
―  Door lock-link switch (driver's door): 4U (+) ↔ body ground (-)
•  Oscilloscope setting: 2 V/DIV (Y), 1 ms/DIV (X), DC range