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acxaaw00001161
BODY CONTROL MODULE (BCM) INSPECTION
id094000800300
1. Remove the front scuff plate inner. (LH) (See FRONT SCUFF PLATE REMOVAL/INSTALLATION.)
2. Remove the front side trim. (LH) (See FRONT SIDE TRIM REMOVAL/INSTALLATION.)
3. Remove the glove compartment. (R.H.D. only) (See GLOVE COMPARTMENT REMOVAL/INSTALLATION.)
4. Remove the BCM with the connector connected.
5. Measure the voltage at each terminal and inspect for the continuity between the terminals and ground is as indicated in the Terminal Voltage Tables (Reference).
Terminal Voltage Table (Reference)
acxaaw00001161
|
|
Terminal |
Signal |
Connected to |
Measurement condition |
Voltage (V)/Continuity |
Inspection item (s) |
|
|---|---|---|---|---|---|---|
|
1A*1
|
Bonnet latch switch signal
|
Bonnet latch switch
|
Bonnet open
(Bonnet latch switch off)
|
5
|
• Bonnet latch switch
• Related wiring harnesses
|
|
|
Bonnet closed
(Bonnet latch switch on)
|
1.0 or less
|
|||||
|
1B
|
—
|
—
|
—
|
—
|
—
|
|
|
1C
|
Parking brake switch signal
|
Parking brake switch
|
Ignition switch at ON
|
Parking brake is activated
|
1.0 or less
|
• Parking brake switch
• Related wiring harnesses
|
|
Parking brake is not activated
|
B+
|
|||||
|
1D
|
CAN_L
|
—
|
Because this terminal is for communication, good/no good judgment by terminal voltage is not possible.
|
• Related wiring harnesses
|
||
|
1E
|
Brake fluid level signal
|
Brake fluid level sensor
|
Ignition switch at ON
|
Brake fluid level above MIN.
|
B+
|
• Brake fluid level sensor
• Related wiring harnesses
|
|
Brake fluid level below MIN.
|
1.0 or less
|
|||||
|
1F
|
CAN_H
|
—
|
Because this terminal is for communication, good/no good judgment by terminal voltage is not possible.
|
• Related wiring harnesses
|
||
|
1G
|
Oil pressure switch signal
|
Oil pressure switch
|
Ignition switch at ON
|
When the engine is running
|
B+
|
• Oil pressure switch
• Related wiring harnesses
|
|
When the engine is not running
|
1.0 or less
|
|||||
|
1H
|
—
|
—
|
—
|
—
|
—
|
|
|
1I
|
Power supply
|
HAZARD 10 A fuse
|
Under any condition
|
B+
|
• HAZARD 10 A fuse
• Related wiring harnesses
|
|
|
1J
|
—
|
—
|
—
|
—
|
—
|
|
|
1K
|
Power door lock power supply
|
D.LOCK 20 A fuse
|
Under any condition
|
B+
|
• D.LOCK 20 A fuse
• Related wiring harnesses
|
|
|
1L
|
Horn control
|
Horn relay
|
Horn switch is pressed.
|
1.0 or less
|
• Horn relay
• Related wiring harnesses
|
|
|
Other
|
B+
|
|||||
|
1M
|
Front turn light (RH) control
|
Front turn light (RH)
|
Turn switch at right position
|
Front turn light (RH) flashes
|
Alternates between 1.0 or less and B+
|
• Front turn light (RH)
• Related wiring harnesses
|
|
Hazard warning switch on
|
||||||
|
Other
|
1.0 or less
|
|||||
|
1N
|
Rear washer motor control
|
Rear washer motor
|
Ignition switch at ON
|
Rear washer switch on
|
1.0 or less
|
• Rear washer motor
• Related wiring harnesses
|
|
Rear washer switch off
|
B+
|
|||||
|
1O
|
Front turn light (LH) control
|
Front turn light (LH)
|
Turn switch at left position
|
Front turn light (LH) flashes
|
Alternates between 1.0 or less and B+
|
• Front turn light (LH)
• Related wiring harnesses
|
|
Hazard warning switch on
|
||||||
|
Other
|
1.0 or less
|
|||||
|
1P
|
Rear washer motor power supply
|
Rear washer motor
|
Ignition switch at ON
|
B+
|
• Rear washer motor
• Related wiring harnesses
|
|
|
Ignition switch off
|
1.0 or less
|
|||||
|
3A
|
Ignition key illumination power supply
|
Ignition key illumination
|
Under any condition
|
B+
|
• Related wiring harnesses
|
|
|
3B
|
Key reminder switch power supply
|
Key reminder switch
|
Under any condition
|
B+
|
• Related wiring harnesses
|
|
|
3C
|
Ignition key illumination control
|
• Steering lock unit (with advanced keyless system)
• Ignition key illumination (with keyless entry system)
|
Ignition switch off and driver-side door opened.
|
1.0 or less
|
• Ignition key illumination bulb
• Related wiring harnesses
|
|
|
15 s or more after all doors closed.
|
B+
|
|||||
|
3D
|
Horn switch signal
|
Horn switch
|
Horn switch off
|
B+
|
• Horn switch
• Related wiring harnesses
|
|
|
Horn switch on
|
1.0 or less
|
|||||
|
3E
|
Serial communication
|
• Keyless control module (with advanced keyless system)
• Keyless receiver (with keyless entry system)
|
Because this terminal is for communication, good/no good judgment by terminal voltage is not possible.
|
• Keyless receiver
• Related wiring harnesses
|
||
|
3F
|
Key reminder switch signal
|
• Steering lock unit (with advanced keyless system)
• Key reminder switch (with keyless entry system)
|
Key inserted
|
B+
|
• Steering lock unit (with advanced keyless system)
• Key reminder switch (with keyless entry system)
• Related wiring harnesses
|
|
|
Key removed
|
1.0 or less
|
|||||
|
3G
|
Steering angle sensor GND
|
Steering angle sensor
|
Under any condition
|
1.0 or less
|
• Steering angle sensor
• Related wiring harnesses
|
|
|
3H
|
—
|
—
|
—
|
—
|
—
|
|
|
3I
|
Steering angle sensor signal (Z)
|
Steering angle sensor
|
Turn the steering wheel to the left and right.
|
Alternates between 4.00—4.75 and 0.25—0.75
|
• Steering angle sensor
• Related wiring harnesses
|
|
|
3J
|
—
|
—
|
—
|
—
|
—
|
|
|
3K
|
Steering angle sensor signal (C)
|
Steering angle sensor
|
Turn the steering wheel to the left and right.
|
Alternates between 4.00—4.75 and 0.25—0.75
|
• Steering angle sensor
• Related wiring harnesses
|
|
|
3L
|
A/C on request signal
|
Climate control unit (manual air conditioner)
|
A/C on
|
1.0 or less
|
• Climate control unit (manual air conditioner)
• Related wiring harnesses
|
|
|
A/C off
|
5
|
|||||
|
3M
|
Steering angle sensor signal (B)
|
Steering angle sensor
|
Turn the steering wheel to the left and right.
|
Alternates between 4.00—4.75 and 0.25—0.75
|
• Steering angle sensor
• Related wiring harnesses
|
|
|
3N
|
—
|
—
|
—
|
—
|
—
|
|
|
3O
|
Steering angle sensor signal (A)
|
Steering angle sensor
|
Turn the steering wheel to the left and right.
|
Alternates between 4.00—4.75 and 0.25—0.75
|
• Steering angle sensor
• Related wiring harnesses
|
|
|
3P
|
Turn switch input (RH)
|
Turn switch
|
Ignition switch at ON
|
Turn switch at right position
|
1.0 or less
|
• Turn switch
• Related wiring harnesses
|
|
Other
|
B+
|
|||||
|
3Q
|
Steering angle sensor power supply
|
Steering angle sensor
|
Fifteen hours after key removed and all doors closed.
|
approx. 2.5
|
• Steering angle sensor
• Related wiring harnesses
|
|
|
Other
|
5
|
|||||
|
3R
|
Turn switch input (LH)
|
Turn switch
|
Ignition switch at ON
|
Turn switch at left position
|
1.0 or less
|
• Turn switch
• Related wiring harnesses
|
|
Other
|
B+
|
|||||
|
3S
|
BCM GND
|
Body ground
|
Under any condition
|
1.0 or less
|
• Related wiring harnesses
|
|
|
3T
|
Hazard warning switch signal
|
Hazard warning switch
|
Hazard warning switch on
|
1.0 or less
|
• Hazard warning switch
• Related wiring harnesses
|
|
|
Hazard warning switch off
|
5
|
|||||
|
3U
|
CAN_H
|
—
|
Because this terminal is for communication, good/no good judgment by terminal voltage is not possible.
|
• Related wiring harnesses
|
||
|
3V
|
Rear wiper switch signal (on)
|
Windshield wiper and washer switch
|
Ignition switch at ON
|
Rear wiper switch at ON position
|
1.0 or less
|
• Wiper and washer switch
• Related wiring harnesses
|
|
Other
|
B+
|
|||||
|
3W
|
CAN_L
|
—
|
Because this terminal is for communication, good/no good judgment by terminal voltage is not possible.
|
• Related wiring harnesses
|
||
|
3X
|
Rear wiper switch signal (INT)
|
Windshield wiper and washer switch
|
Ignition switch at ON
|
Rear wiper switch at INT position
|
1.0 or less
|
• Wiper and washer switch
• Related wiring harnesses
|
|
Other
|
B+
|
|||||
|
4A
|
Heated outer mirror power supply
|
• Rear window defroster relay
• M.DEF 7.5 A fuse
|
Rear window defroster switch at on
|
B+
|
• Rear window defroster relay
• Related wiring harnesses
|
|
|
Rear window defroster switch at off
|
1.0 or less
|
|||||
|
4B
|
BCM power supply
|
ROOM 15 A Fuse
|
Under any condition
|
B+
|
• ROOM 15 A fuse
• Related wiring harnesses
|
|
|
4C
|
—
|
—
|
—
|
—
|
—
|
|
|
4D
|
Rear wiper and washer power supply
|
• R.WIP 10 A fuse
• Rear wiper motor
|
Ignition switch at ON
|
B+
|
• R.WIP 10 A fuse
• Ignition switch
• Rear wiper motor
• Related wiring harnesses
|
|
|
Ignition switch off
|
1.0 or less
|
|||||
|
4E
|
—
|
—
|
—
|
—
|
—
|
|
|
4F
|
Rear washer switch signal
|
Windshield wiper and washer switch
|
Ignition switch at ON
|
Rear washer switch on
|
1.0 or less
|
• Windshield wiper and washer switch
• Related wiring harnesses
|
|
Rear washer switch off
|
B+
|
|||||
|
4G
|
BCM GND
|
Body ground
|
Under any condition
|
1.0 or less
|
• Related wiring harnesses
|
|
|
4H
|
—
|
—
|
—
|
—
|
—
|
|
|
4I
|
IG 1
|
• METER 10 A fuse
• Ignition switch
|
IG ON
|
B+
|
• METER 15 A fuse
• Ignition switch
• Related wiring harnesses
|
|
|
IG OFF
|
1.0 or less
|
|||||
|
4J
|
—
|
—
|
—
|
—
|
—
|
|
|
5A*1*5
|
Theft-deterrent siren signal
|
Theft-deterrent siren
|
Theft-deterrent system arming
|
• Theft-deterrent siren
• Related wiring harnesses
|
||
|
5B
|
Driver-side door key cylinder switch signal (unlock)
|
Driver-side door key cylinder switch
|
Driver-side key cylinder is in the UNLOCK position
|
1.0 or less
|
• Driver-side door key cylinder switch
• Related wiring harnesses
|
|
|
Driver-side key cylinder is in the LOCK position
|
2.5
|
|||||
|
Other
|
5
|
|||||
|
5C
|
CAN_H
|
—
|
Because this terminal is for communication, good/no good judgment by terminal voltage is not possible.
|
• Related wiring harnesses
|
||
|
5D*1
|
Lock/unlock signal (rear door lock link switch (LH))
|
Rear door lock link switch (LH)
|
Rear door (LH) is locked
|
5
|
• Rear door lock link switch (LH)
• Related wiring harnesses
|
|
|
Rear door (LH) is unlocked
|
1.0 or less
|
|||||
|
5E*1
|
Lock/unlock signal (rear door lock link switch (RH))
|
Rear door lock link switch (RH)
|
Rear door (RH) is locked
|
5
|
• Rear door lock link switch (RH)
• Related wiring harnesses
|
|
|
Rear door (RH) is unlocked
|
1.0 or less
|
|||||
|
5F
|
CAN_L
|
—
|
Because this terminal is for communication, good/no good judgment by terminal voltage is not possible.
|
• Related wiring harnesses
|
||
|
5G
|
Lock input (Driver-side door lock-link switch)
|
Driver-side door lock-link switch
|
Driver-side door locked
|
1.0 or less
|
• Driver-side door lock-link switch
• Related wiring harnesses
|
|
|
Driver-side door unlocked
|
5
|
|||||
|
5H*1
|
Lock input (passenger-side door lock-link switch)
|
Passenger-side door lock-link switch
|
Passenger-side door is locked
|
5
|
• Passenger-side door lock-link switch
• Related wiring harnesses
|
|
|
Passenger-side door is unlocked
|
1.0 or less
|
|||||
|
5I
|
CAN_H
|
—
|
Because this terminal is for communication, good/no good judgment by terminal voltage is not possible.
|
• Related wiring harnesses
|
||
|
5J
|
Unlock input (Driver-side door lock-link switch)
|
Driver-side door lock-link switch
|
Driver-side door locked
|
5
|
• Driver-side door lock-link switch
• Related wiring harnesses
|
|
|
Driver-side door unlocked
|
1.0 or less
|
|||||
|
5K
|
Lock/unlock signal
|
Door lock switch (driver-side)
|
Door lock switch (driver-side) is pressed to lock.
|
2.5
|
• Door lock switch (driver-side)
• Related wiring harnesses
|
|
|
Door lock switch (driver-side) is pressed to unlock.
|
1.0 or less
|
|||||
|
Other
|
5
|
|||||
|
5L
|
CAN_L
|
—
|
Because this terminal is for communication, good/no good judgment by terminal voltage is not possible.
|
• Related wiring harnesses
|
||
|
5M*1*5
|
Intruder sensor GND
|
Intruder sensor
|
Under any condition
|
1.0 or less
|
• Related wiring harnesses
|
|
|
5N
|
Lock/unlock signal
|
Door lock switch (passenger-side)
|
Door lock switch (passenger-side) is pressed to lock.
|
2.5
|
• Door lock switch (passenger-side)
• Related wiring harnesses
|
|
|
Door lock switch (passenger-side) is pressed to unlock.
|
1.0 or less
|
|||||
|
Other
|
5
|
|||||
|
5O
|
Rear turn light (RH) control
|
Rear turn light (RH)
|
Turn switch (RH) on
|
Rear turn light (RH) flashes
|
Alternates between 1.0 or less and B+
|
• Rear turn light (RH)
• Related wiring harnesses
|
|
Hazard warning switch on
|
||||||
|
Other
|
1.0 or less
|
|||||
|
5P*1*5
|
Intruder sensor signal
|
Intruder sensor
|
Because this terminal is for communication, good/no good judgment by terminal voltage is not possible.
|
• Intruder sensor
• Related wiring harnesses
|
||
|
5Q
|
—
|
—
|
—
|
—
|
—
|
|
|
5R
|
Rear turn light (LH) control
|
Rear turn light (LH)
|
Turn switch (LH) on
|
Rear turn light (LH) flashes
|
Alternates between 1.0 or less and B+
|
• Rear turn light (LH)
• Related wiring harnesses
|
|
Hazard warning switch on
|
||||||
|
Other
|
1.0 or less
|
|||||
|
5S
|
—
|
—
|
—
|
—
|
—
|
|
|
5T
|
Liftgate latch switch signal
|
Liftgate latch switch
|
Liftgate is open.
(Liftgate latch switch on)
|
1.0 or less
|
• Liftgate latch switch
• Related wiring harnesses
|
|
|
Liftgate is closed.
(Liftgate latch switch off)
|
B+
|
|||||
|
5U*4
|
All door out signal
|
Power window main switch
|
Any door is open
|
1.0 or less
|
• Power window main switch
• Related wiring harnesses
|
|
|
All doors are closed
|
B+
|
|||||
|
5V
|
Front door switch (passenger-side) signal
|
Front door switch (passenger-side)
|
Front door (passenger-side) open
(Front door switch (passenger-side) on)
|
1.0 or less
|
• Front door switch (passenger-side)
• Related wiring harnesses
|
|
|
Front door (passenger-side) closed
(Front door switch (passenger-side) off)
|
B+
|
|||||
|
5W*3
|
Serial communication
|
• Power window main switch
• Sunroof motor
|
Because this terminal is for communication, good/no good judgment by terminal voltage is not possible.
|
• Power window main switch
• Sunroof unit
• Related wiring harnesses
|
||
|
5X*2
|
Driver-side door key cylinder switch signal (lock)
|
Driver-side door key cylinder switch
|
Driver-side key cylinder is in the LOCK or UNLOCK position
|
1.0 or less
|
• driver-side door key cylinder switch
• Related wiring harnesses
|
|
|
Other
|
5
|
|||||
|
5Y
|
Rear door switch (LH) signal
|
Rear door switch (LH)
|
Any rear doors open
(Rear door switch on)
|
1.0 or less
|
• Rear door switches
• Related wiring harnesses
|
|
|
All rear doors closed
(Rear door switch off)
|
B+
|
|||||
|
5Z
|
Rear door switch (RH) signal
|
Rear door switch (RH)
|
Any rear doors open
(Rear door switch on)
|
1.0 or less
|
• Rear door switches
• Related wiring harnesses
|
|
|
All rear doors closed
(Rear door switch off)
|
B+
|
|||||
|
5AA
|
—
|
—
|
—
|
—
|
—
|
|
|
5AB
|
Front door switch (driver-side) signal
|
Front door switch (driver-side)
|
Front door (driver-side) open
(Front door switch (driver-side) on)
|
1.0 or less
|
• Front door switch (driver-side)
• Related wiring harnesses
|
|
|
Front door (driver-side) closed
(Front door switch (driver-side) off)
|
B+
|
|||||
|
5AC
|
Heated outer mirror control
|
Heated outer mirror (driver-side)
|
Rear window defroster switch at on
|
B+
|
• Rear window defroster relay
• Heated outer mirror (driver-side)
• Related wiring harnesses
|
|
|
Rear window defroster switch at off
|
1.0 or less
|
|||||
|
5AD
|
Heated outer mirror control
|
Heated outer mirror (passenger-side)
|
Rear window defroster switch at on
|
B+
|
• Rear window defroster relay
• Heated outer mirror (passenger-side)
• Related wiring harnesses
|
|
|
Rear window defroster switch at off
|
1.0 or less
|
|||||
|
6A
|
• Driver-side door unlock control (with 2stage unlock system)
• Double locking system door lock control (with double locking system)
|
Driver-side door lock actuator
|
Driver-side door lock actuator unlocking (with 2 stage unlock system)
|
1.0 or less → B+→ 1.0 or less
|
• Driver-side door lock actuator
• Related wiring harnesses
|
|
|
Double-locking system is adopted (with double locking system)
|
1.0 or less → B+→ 1.0 or less
|
|||||
|
Other
|
1.0 or less
|
|||||
|
6B
|
Rear wiper control
|
Rear wiper motor
|
Rear wiper moving
|
1.0 or less
|
• Rear wiper motor
• Related wiring harnesses
|
|
|
Rear wiper stopped
|
B+
|
|||||
|
6C
|
Door unlock control
|
Door lock actuators
|
Door lock actuators unlocking
|
1.0 or less → B+→ 1.0 or less
|
• Door lock actuators
• Related wiring harnesses
|
|
|
Other
|
1.0 or less
|
|||||
|
6D
|
Interior light control
|
• Map light
• Interior light
|
Within 5 min after any door is opened.
|
1.0 or less
|
• Map light
• Interior light
• Related wiring harnesses
|
|
|
5 min or more after any door is opened.
|
B+
|
|||||
|
All doors closed
|
B+
|
|||||
|
6E
|
Door lock control
|
Door lock actuators
|
Door lock actuators locking
|
1.0 or less → B+→ 1.0 or less
|
• Door lock actuators
• Related wiring harnesses
|
|
|
Other
|
1.0 or less
|
|||||
|
6F
|
Interior light power supply
|
• Map light
• Interior light
• Cargo compartment light
|
Under any condition
|
B+
|
• Map light
• Interior light
• Cargo compartment light
• Related wiring harnesses
|
|
Inspection Using an Oscilloscope (Reference)
Intruder sensor signal
acxaaw00000936
|
