KEYLESS CONTROL MODULE INSPECTION [WITH ADVANCED KEYLESS SYSTEM]


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1.  Measure the voltage or inspect for continuity according to 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.


Terminal Voltage Table (Reference)

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Terminal

Signal name

Connected to

Measured condition

Voltage (V)/Continuity

Inspection item(s)

1A
Door lock control
Door lock actuator (driver’s side)
Door lock actuator locking
1.0 or less → B+→ 1.0 or less
•  Door lock actuator (driver’s side)
•  Related wiring harnesses
Other
1.0 or less
1B
GND
GND
Under any condition: Inspect for continuity to GND.
Continuity detected
•  Related wiring harnesses
1C
Door unlock control
Door lock actuator
Door lock actuator unlocking
1.0 or less → B+→ 1.0 or less
•  Door lock actuator
•  Related wiring harnesses
Other
1.0 or less
1D
Door lock control
Door lock actuator
Door lock actuator locking
1.0 or less → B+→ 1.0 or less
•  Door lock actuator
•  Related wiring harnesses
Other
1.0 or less
1E
Power supply
D.LOCK 30 A fuse
Under any condition
B+
•  D.LOCK 30 A fuse
•  Battery
1F
Power supply
ROOM 15 A fuse
Under any condition
B+
•  ROOM 15 A fuse
•  Battery
2A
keyless antenna (exterior, RF)(+)
keyless antenna (exterior, RF)
Under any condition: Inspect for continuity to keyless antenna.
Continuity detected
keyless antenna (exterior, RF)
2B
keyless antenna (exterior, RF)(-)
keyless antenna (exterior, RF)
Under any condition: Inspect for continuity to keyless antenna.
Continuity detected
keyless antenna (exterior, RF)
2C
keyless antenna (exterior, LF)(+)
keyless antenna (exterior, LF)
Under any condition: Inspect for continuity to keyless antenna.
Continuity detected
keyless antenna (exterior, LF)
2D
keyless antenna (exterior, LF)(-)
keyless antenna (exterior, LF)
Under any condition: Inspect for continuity to keyless antenna.
Continuity detected
keyless antenna (exterior, LF)
2E
keyless antenna (exterior, rear) (+)
keyless antenna (exterior, rear)
Under any condition: Inspect for continuity to keyless antenna.
Continuity detected
keyless antenna (exterior, rear)
2F
keyless antenna (exterior, rear) (-)
keyless antenna (exterior, rear)
Under any condition: Inspect for continuity to keyless antenna.
Continuity detected
keyless antenna (exterior, rear)
2G
keyless antenna (interior, trunk) (+)
keyless antenna (interior, trunk)
Under any condition: Inspect for continuity to keyless antenna.
Continuity detected
keyless antenna (interior, trunk)
2H
keyless antenna (interior, trunk) (-)
keyless antenna (interior, trunk)
Under any condition: Inspect for continuity to keyless antenna.
Continuity detected
keyless antenna (interior, trunk)
2I
keyless antenna (interior, rear) (+)
keyless antenna (interior, rear)
Under any condition: Inspect for continuity to keyless antenna.
Continuity detected
keyless antenna (interior, rear)
2J
keyless antenna (interior, rear) (-)
keyless antenna (interior, rear)
Under any condition: Inspect for continuity to keyless antenna.
Continuity detected
keyless antenna (interior, rear)
2K
keyless antenna (interior, middle)(+)
keyless antenna (interior, middle)
Under any condition: Inspect for continuity to keyless antenna.
Continuity detected
keyless antenna (interior, middle)
2L
keyless antenna (interior, middle)(-)
keyless antenna (interior, middle)
Under any condition: Inspect for continuity to keyless antenna.
Continuity detected
keyless antenna (interior, middle)
3B
IG1
ENGINE 10 A fuse
Ignition switch is at ON position
B+
ENGINE 10 A fuse
Ignition switch is at LOCK or ACC position
1.0 or less
3C
GND
body ground
Under any condition: Inspect for continuity to ground.
Continuity detected
GND
3G
keyless antenna (interior, front)(+)
keyless antenna (interior, front)
Under any condition: Inspect for continuity to keyless antenna.
Continuity detected
keyless antenna (interior, front)
3H
keyless antenna (interior, front)(-)
keyless antenna (interior, front)
Under any condition: Inspect for continuity to keyless antenna.
Continuity detected
keyless antenna (interior, front)
3I
ACC
METER 10 A fuse
Ignition switch is at ACC position
B+
METER 10 A fuse
Ignition switch is at LOCK or ON position
1.0 or less
3K
Buzzer (interior)
Instrument cluster
Buzzer operated
1.0 or less
Instrument cluster
Other
5.0
3N
Start knob (push switch)
Steering lock unit
Start knob is Pushed
B+
Steering lock unit
Other
1.0 or less
3O
Key reminder switch
Steering lock unit
Key reminder switch is ON
B+
Steering lock unit
Other
1.0 or less
3P
Communication (Steering lock unit)
Steering lock unit
Under any condition: Inspect for continuity to steering lock unit.
Continuity detected
Steering lock unit
3R
Theft-deterrent siren signal
Theft-deterrent siren
Theft-deterrent system arming
•  Theft-deterrent siren
•  Related wiring harnesses
3S
Power supply (keyless receiver, front)
Keyless receiver, front
Under any condition
B+
Keyless receiver, front
3U
Communication (keyless receiver, front)
Keyless receiver, front
Under any condition: Inspect for continuity to keyless receiver, front.
Continuity detected
Keyless receiver, front
3V
Power supply (keyless receiver, rear)
Keyless receiver, rear
Under any condition
B+
Keyless receiver, rear
3X
Communication (keyless receiver, rear)
Keyless receiver, rear
Under any condition: Inspect for continuity to keyless receiver, rear.
Continuity detected
Keyless receiver, rear
3Y*1
Tx-PATS
Coil antenna
Ignition switch is at ON position
B+
Coil antenna
Ignition switch is at LOCK or ACC position
1.0 or less
3Z
Trunk open signal
Trunk compartment light switch
Trunk lid open
(trunk compartment light switch on)
1.0 or less
•  Trunk compartment light switch
•  Related wiring harnesses
Trunk lid closed
(trunk compartment light switch off)
B+
3AA*1
Rx-PATS
Coil antenna
Ignition switch is at ON position
5.0
Coil antenna
Ignition switch is at LOCK or ACC position
1.0 or less
3AB
Power supply (intruder sensor)
Intruder sensor
Under any condition
B+
Intruder sensor
3AD
Communication (intruder sensor)
Intruder sensor
Under any condition: Inspect for continuity to steering lock unit.
Continuity detected
Intruder sensor
4A*1
Tx
Instrument cluster
Ignition switch is at ON position
B+
Instrument cluster
Ignition switch is at LOCK or ACC position
1.0 or less
4C*1
Rx
Instrument cluster
Ignition switch is at ON position
B+
Instrument cluster
Ignition switch is at LOCK or ACC position
1.0 or less
4E
Lock signal input
Door lock-link switch (driver-side)
Driver-side door is locked: Inspect for continuity to ground.
Continuity detected
Door lock-link switch (driver-side)
Driver-side door is unlocked: Inspect for continuity to ground.
No continuity
4G
Lock/unlock input
Driver-side door key cylinder switch
At the moment key cylinder is locked
2.5
•  Driver-side door key cylinder switch
•  Related wiring harnesses
At the moment key cylinder is unlocked
1.0 or less
At the moment key cylinder is neutral position
5
4H
Request switch input (RH)
Request switch (RH)
Request switch (RH) is ON: Inspect for continuity to ground.
Continuity detected
Request switch (RH)
Request switch (RH) is OFF: Inspect for continuity to ground.
No continuity
4I
Unlock signal input
Door lock-link switch (driver-side)
Driver-side door is unlocked: Inspect for continuity to ground.
Continuity detected
Door lock-link switch (driver-side)
Driver-side door is locked: Inspect for continuity to ground.
No continuity
4J
Request switch input (LH)
Request switch (LH)
Request switch (LH) is ON: Inspect for continuity to ground.
Continuity detected
Request switch (LH)
Request switch (LH) is OFF: Inspect for continuity to ground.
No continuity
4L
Request switch input (trunk lid)
Request switch (trunk lid)
Trunk lid request switch is ON: Inspect for continuity to ground.
Continuity detected
Request switch (trunk lid)
Trunk lid request switch is OFF: Inspect for continuity to ground.
No continuity
4N
Hazard output
Hazard warning light
Press the LOCK button (transmitter)
B+→1.0 or less→B+
•  Hazard warning light
•  Related wiring harnesses
Press the UNLOCK button (transmitter)
B+→1.0 or less→B+→1.0 or less→B+
Other
B+
4O
Trunk lid opener switch input
Trunk lid opener switch
Trunk lid opener switch on
B+
•  Trunk lid opener switch
•  Related wiring harnesses
Trunk lid opener switch off
1.0 or less
4Q
Door switch signal (RH) output
Door switch
Door open (RH)
(Door switch on)
1.0 or less
•  Door switch (RH)
•  Related wiring harnesses
Door closed (RH)
(Door switch off)
B+
4R
Unlock signal input
Door lock-link switch (passenger-side)
Passenger-side door is unlocked: Inspect for continuity to ground.
Continuity detected
Door lock-link switch (passenger-side)
Passenger-side door is locked: Inspect for continuity to ground.
No continuity
4T
Door switch signal (LH) output
Door switch
Door open (LH)
(Door switch on)
1.0 or less
•  Door switch (LH)
•  Related wiring harnesses
Door closed (LH)
(Door switch off)
B+
4V
Bonnet switch signal
Bonnet switch
Bonnet open
(Bonnet latch switch off)
B+
•  Bonnet latch switch
•  Related wiring harnesses
Bonnet closed
(Bonnet latch switch on)
1.0 or less
4W
Top lock switch signal
Top lock switch
Convertible top open
(Top lock switch on)
1.0 or less
•  Top lock switch
•  Related wiring harnesses
Convertible top closed
(Top lock switch off)
B+
4Y
Keyless buzzer output
Keyless buzzer
Keyless buzzer operated
B+
Keyless buzzer
Other
1.0 or less
4Z
HS-CAN+
PCM
Under any condition:
•  Inspect for continuity to PCM.
•  Inspect for continuity to instrument cluster.
Continuity detected
-
4AA
HS-CAN-
PCM
Under any condition:
•  Inspect for continuity to PCM.
•  Inspect for continuity to instrument cluster.
Continuity detected
-

*1  :With immobilizer system

Inspection Using an Oscilloscope (Reference)


Theft-deterrent siren signal

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•  Terminal connected: 3R (+)—Negative battery terminal
•  Oscilloscope setting: 2 V/DIV (Y): 100 ms/DIV (X), DC range
•  Measurement condition: Theft-deterrent system arming.