KEYLESS CONTROL MODULE INSPECTION [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM]


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1.  Remove the front scuff plate. (See FRONT SCUFF PLATE REMOVAL/INSTALLATION.)

2.  Remove the front side trim. (See FRONT SIDE TRIM REMOVAL/INSTALLATION.)

3.  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)

am6zzw00004740

Terminal

Signal name

Connected to

Measurement condition

Voltage (V)

Inspection item (s)

1A
Steering lock unit ground
Steering lock unit
During steering lock unit operation
1.0 or less
Steering lock unit
Other
Approx. 3.0
1B
Power supply
STEERING LOCK 10 A fuse
Under any condition
B+
STEERING LOCK 10 A fuse
Battery
1C
Power supply
Steering lock unit
Steering lock unit During lock/unlock control
B+
Steering lock unit
Other
1.0 or less
1D
Power supply
BCM
Under any condition
B+
ROOM 15 A fuse
Battery
BCM
1E
Power supply
EGI 5 A fuse
Under any condition
B+
EGI 5 A fuse
Battery
1F
GND
Body ground
Under any condition
1.0 or less
Body ground
2A
Power supply
MIRROR 5 A fuse
Switch the ignition to ACC
B+
ACC relay
MIRROR 5 A fuse
Battery
Switch the ignition to off
1.0 or less
2B
Rx-PATS
Coil antenna
Communication lines, cannot be determined by voltage only (B+ when not communicating)
B+
Coil antenna
2C
Power supply
ENGINE IG 15 A fuse
Switch the ignition to ON
B+
IG1 relay
ENGINE IG 15 A fuse
Battery
Switch the ignition to ACC or off
1.0 or less
2D
Tx-PATS
Coil antenna
Communication lines, cannot be determined by voltage only (B+ when not communicating)
B+
Coil antenna
2F
BCM communication
BCM
Communication lines, cannot be determined by voltage only (B+ when not communicating)
B+
BCM
2G
HS-CAN+
-
Terminal used for communication therefore determination based on terminal voltage inspection not possible.
2H
Keyless entry communication
Keyless receiver
Terminal used for communication therefore determination based on terminal voltage inspection not possible.
2I
HS-CAN-
-
Terminal used for communication therefore determination based on terminal voltage inspection not possible.
2J
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+
2K
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+
2L
Steering lock unit communication
Steering lock unit
Terminal used for communication therefore determination based on terminal voltage inspection not possible.
3B*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+
3C
Keyless antenna (exterior, rear)
Keyless antenna (exterior, rear)
Terminal used for communication therefore determination based on terminal voltage inspection not possible.
3D
Liftgate (WGN)
Request switch (Liftgate) (WGN)
Liftgate request switch is pressed
1.0 or less
Request switch (Liftgate) (WGN)
Liftgate request switch is released
B+
3E
Brake switch
Brake switch
Brake pedal is depressed
Wave pattern (See Pattern 1.)
Brake switch
Brake pedal is not depressed
1.0 or less
3F
Keyless antenna (LF)
Keyless antenna (LF)
Terminal used for communication therefore determination based on terminal voltage inspection not possible.
3G
Trunk lid unlatch input (4SD)Liftgate unlatch input (5HB, WGN)
Trunk lid opener switch (4SD)Liftgate opener switch (5HB, WGN)
Trunk lid/liftgate opener switch is pressed
3.0
Trunk lid opener switch (4SD)Liftgate opener switch (5HB, WGN)
Trunk lid/liftgate opener switch is released
4.7
3H
Unlock input
Touch sensor (RF)
Terminal used for communication therefore determination based on terminal voltage inspection not possible.
3I
Keyless antenna (interior, rear)
Keyless antenna (interior, rear)
Terminal used for communication therefore determination based on terminal voltage inspection not possible.
3K
Keyless beeper power supply
Keyless beeper
Exterior keyless beeper sounds
5.0 or more
Keyless beeper
Other
1.0 or less
3L
Keyless antenna (interior, center)
Keyless antenna (interior, center)
Terminal used for communication therefore determination based on terminal voltage inspection not possible.
3M*2
P position
Transaxle range switch
Shift position is P
Wave pattern (See Pattern 1.)
Transaxle range switch
Other
1.0 or less
3N
GND
Body ground
Under any condition
1.0 or less
Body ground
3O
Keyless antenna (RF)
Keyless antenna (RF)
Terminal used for communication therefore determination based on terminal voltage inspection not possible.
3P
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 2.)
3Q
Unlock input
Touch sensor (LF)
Terminal used for communication therefore determination based on terminal voltage inspection not possible.
3R
Keyless antenna (interior, front)
Keyless antenna (interior, front)
Terminal used for communication therefore determination based on terminal voltage inspection not possible.
3S
Brake switch
Brake switch
Brake pedal is depressed
B+
Brake switch
Brake pedal is not depressed
1.0 or less
3T*1
Neutral switch
Neutral switch
Shift lever is in neutral position
1.0 or less
Neutral switch
Shift lever is not in neutral position
Wave pattern (See Pattern 1.)
3U
Request switch (RF)
Request switch (RF)
Request switch is pressed
1.0 or less
Front outer handle (RF)
Request switch is released
B+
3X
Request switch (LF)
Request switch (LF)
Request switch is pressed
1.0 or less
Front outer handle (LF)
Request switch is released
B+
3Y
Keyless antenna (interior, center)
Keyless antenna (interior, center)
Terminal used for communication therefore determination based on terminal voltage inspection not possible.
3Z
Keyless antenna (interior, rear)
Keyless antenna (interior, rear)
Terminal used for communication therefore determination based on terminal voltage inspection not possible.
3AA
Keyless antenna (interior, front)
Keyless antenna (interior, front)
Terminal used for communication therefore determination based on terminal voltage inspection not possible.
3AB
Keyless antenna (LF)
Keyless antenna (LF)
Terminal used for communication therefore determination based on terminal voltage inspection not possible.
3AC
Keyless antenna (exterior, rear)
Keyless antenna (exterior, rear)
Terminal used for communication therefore determination based on terminal voltage inspection not possible.
3AD
Keyless antenna (RF)
Keyless antenna (RF)
Terminal used for communication therefore determination based on terminal voltage inspection not possible.
4A
Steering lock unit unlock
Steering lock unit
Steering lock unit Unlocked condition
1.0 or less
Steering lock unit
Steering lock unit Locked condition
Wave pattern (See Pattern 2.)
4B
Starter relay
Starter relay
Cranking
B+
Starter relay
Other (Remove the starter relay)
1.0 or less
4E
IG 1 relay control
IG 1 Relay
Switch the ignition to ON
B+
IG 1 Relay
Switch the ignition to off or ACC
1.0 or less
4F
ACC relay control
ACC Relay
Switch the ignition to ACC
B+
ACC Relay
Switch the ignition to off
1.0 or less
4H
IG 2 relay control
IG 2 Relay
Switch the ignition to ON
B+
IG 2 Relay
Switch the ignition to off or ACC
1.0 or less
4J
Push button illumination (ACC)
Push button start
In the case of ACC
1.0 or less
Push button start
Case except the ACC
B+
4K
Starter interlock switch
(MTX)
Starter interlock switch
Switch the ignition to off
Clutch pedal is not depressed
1.0 or less
Starter interlock switch
Clutch pedal is depressed
4.0 or more
Transaxle range switch
(ATX)
Transaxle range switch
Shift position is not P or N range
1.0 or less
Transaxle range switch
Shift position is P or N range
4.0 or more
4L
GND
Body ground
Under any condition
1.0 or less
Body ground
4Q
Power supply
Coil antenna
Communication lines, cannot be determined by voltage only (B+ when not communicating)
B+
Coil antenna
Push button start
4R
Ring illumination (immobilizer system)
Coil antenna
Terminal used for communication therefore determination based on terminal voltage inspection not possible.
Coil antenna
4S
Power supply
Combined sensor
Until steering lock unit locks after switch the ignition to off
B+
Combined sensor
BCM
ABS/DCS HU/CM
Steering lock unit locks after switch the ignition to off
1.0 or less
4T
Push button illumination (Umber)
Push button start
System is malfunctioning
1.0 or less
Push button start
Other
B+
4U
TNS
Auto light/wiper control module
TNS ON
B+
Auto light/wiper control module
TNS OFF
1.0 or less
4W
Push button illumination (ON)
Push button start
In the case of ON
1.0 or less
Push button start
Case except the ON
B+
4X
Power supply
WIPER 20 A fuse
Switch the ignition to ON
B+
IG 2 Relay
WIPER 20 A fuse
Battery
Switch the ignition to off or ACC
1.0 or less
4Y
Push button illumination (green)
Push button start
Engine start is available
1.0 or less
Push button start
Other
B+
4AA
Starter monitor
Starter relay
Switch the ignition to off
Clutch pedal is not depressed (MTX)
1.0 or less
Starter relay
Shift position is not P or N range (ATX)
Clutch pedal is depressed (MTX)
4.0 or more
Shift position is P or N range (ATX)

*1  :MTX
*2  :ATX

Generated pulse (reference)


Pattern 1

am6zzw00005453
•  Terminal:
―  Brake switch: 3E (+) ↔ body ground (-)
―  Transaxle range switch: 3M (+) ↔ body ground (-)
―  Neutral switch: 3T (+) ↔ body ground (-)
•  Oscilloscope setting: 2 V/DIV (Y), 1 ms/DIV (X), DC range


Pattern 2

aatjjw00004591
•  Terminal:
―  Lock input: 3P (+) ↔ body ground (-)
―  Steering lock unit unlock: 4A (+) ↔ body ground (-)
•  Oscilloscope setting: 2 V/DIV (Y), 1 ms/DIV (X), DC range