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LF CONTROL UNIT INSPECTION [(E)]

id0914001106x2

1. Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(E)].)

2. Remove the front side trim. (See LF CONTROL UNIT REMOVAL/INSTALLATION [(E)].)

3. Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(E)].)

4. Verify that the voltages of each of the terminals are as indicated in the terminal voltage table (See Terminal voltage table (reference).).

• If the voltage is not as specified in the terminal voltage table (See Terminal voltage table (reference).), inspect the parts under Inspection item(s).

― If the system does not work normally even though the inspection items are normal, replace the LF control unit.

Terminal voltage table (reference)

am3zzw00027710

Terminal

Signal name

Connected to

Measurement conditions

Voltage (V)

Inspection item (s)

A

—

—

—

—

—

B

B1(ROOM)

•  JB No.1

•  F50 15 A fuse

•  F27 25 A fuse

Under any condition

B+

•  JB No.1

•  F50 15 A fuse

•  F27 25 A fuse

•  Related wiring harness

C

—

—

—

—

—

D

B2(LIMP HOME)

•  F22 15A fuse

•  Push button start

Under any condition

B+

•  F22 15A fuse

•  Push button start

•  Related wiring harness

E

L/G LOCK SW

•  Power liftgate (PLG) rear switch (with power liftgate (PLG))

•  Door lock switch (liftgate)^*1

When liftgate lock switch is pressed

1.0 or less

•  Power liftgate (PLG) rear switch (with power liftgate (PLG))

•  Door lock switch (liftgate)^*1

•  Related wiring harness

When liftgate lock switch is not pressed

B+

F

RF PWR

Keyless receiver

Under any condition

Approx 5.0

•  Keyless receiver

•  Related wiring harness

G^*1

FR_POWER_SIGNAL

Front outer handle (RH)

When Front outer handle (RH) is touched

B+

•  Front outer handle (RH)

•  Related wiring harness

When Front outer handle (RH) is not touched

1.0 or less

H^*1

FL_POWER_SIGNAL

Front outer handle (LH)

When Front outer handle (LH) is touched

B+

•  Front outer handle (LH)

•  Related wiring harness

When Front outer handle (LH) is not touched

1.0 or less

I

—

—

—

—

—

J

RF SIG

Keyless receiver

Because this terminal is for communication, integrity determination using terminal voltage inspection is not possible.

K^*1

FL_GND

Front outer handle (LH)

Under any condition

1.0 or less

•  Front outer handle (LH)

•  Related wiring harness

L

Serial LFU

Body control module (BCM)

Under any condition

B+

•  Body control module (BCM)

•  Related wiring harness

M

CAN BODY H

Climate control unit

Because this terminal is for communication, integrity determination using terminal voltage inspection is not possible.

N^*1

FR_GND

Front outer handle (RH)

Under any condition

1.0 or less

•  Front outer handle (RH)

•  Related wiring harness

O

GND

Body ground

Under any condition

Approx. 0

•  GND point

•  Related wiring harness

P

CAN BODY L

Climate control unit

Because this terminal is for communication, integrity determination using terminal voltage inspection is not possible.

Q

INT LF-ANT SHIELD

Keyless antenna (exterior, LF)

Under any condition

1.0 or less

Related wiring harness

R

GND

Body ground

Under any condition

Approx. 0

•  GND point

•  Related wiring harness

S^*1

LF FL-

Front outer handle (LH)

Because this terminal is for communication, integrity determination using terminal voltage inspection is not possible.

T^*1

LF FL+

Front outer handle (LH)

Because this terminal is for communication, integrity determination using terminal voltage inspection is not possible.

U^*1

LF FR-

Front outer handle (RH)

Because this terminal is for communication, integrity determination using terminal voltage inspection is not possible.

V^*1

LF FR+

Front outer handle (RH)

Because this terminal is for communication, integrity determination using terminal voltage inspection is not possible.

W

LF F-

Keyless antenna (interior, front)

Because this terminal is for communication, integrity determination using terminal voltage inspection is not possible.

X

LF F+

Keyless antenna (interior, front)

Because this terminal is for communication, integrity determination using terminal voltage inspection is not possible.

Y^*1

LF BUM-

Keyless antenna (exterior, rear)

Because this terminal is for communication, integrity determination using terminal voltage inspection is not possible.

Z^*1

LF BUM+

Keyless antenna (exterior, rear)

Because this terminal is for communication, integrity determination using terminal voltage inspection is not possible.

AA^*1

LF R-

Keyless antenna (interior, rear)

Because this terminal is for communication, integrity determination using terminal voltage inspection is not possible.

AB^*1

LF R+

Keyless antenna (interior, rear)

Because this terminal is for communication, integrity determination using terminal voltage inspection is not possible.

AC

—

—

—

—

—

AD

—

—

—

—

—

AE

PATS-

Push button start

Because this terminal is for communication, integrity determination using terminal voltage inspection is not possible.

AF

PATS+

Push button start

Because this terminal is for communication, integrity determination using terminal voltage inspection is not possible.

Terminal	Signal name	Connected to	Measurement conditions	Voltage (V)	Inspection item (s)
A	—	—	—	—	—
B	B1(ROOM)	• JB No.1 • F50 15 A fuse • F27 25 A fuse	Under any condition	B+	• JB No.1 • F50 15 A fuse • F27 25 A fuse • Related wiring harness
C	—	—	—	—	—
D	B2(LIMP HOME)	• F22 15A fuse • Push button start	Under any condition	B+	• F22 15A fuse • Push button start • Related wiring harness
E	L/G LOCK SW	• Power liftgate (PLG) rear switch (with power liftgate (PLG)) • Door lock switch (liftgate)^*1	When liftgate lock switch is pressed	1.0 or less	• Power liftgate (PLG) rear switch (with power liftgate (PLG)) • Door lock switch (liftgate)^*1 • Related wiring harness
When liftgate lock switch is not pressed	B+
F	RF PWR	Keyless receiver	Under any condition	Approx 5.0	• Keyless receiver • Related wiring harness
G^*1	FR_POWER_SIGNAL	Front outer handle (RH)	When Front outer handle (RH) is touched	B+	• Front outer handle (RH) • Related wiring harness
When Front outer handle (RH) is not touched	1.0 or less
H^*1	FL_POWER_SIGNAL	Front outer handle (LH)	When Front outer handle (LH) is touched	B+	• Front outer handle (LH) • Related wiring harness
When Front outer handle (LH) is not touched	1.0 or less
I	—	—	—	—	—
J	RF SIG	Keyless receiver	Because this terminal is for communication, integrity determination using terminal voltage inspection is not possible.
K^*1	FL_GND	Front outer handle (LH)	Under any condition	1.0 or less	• Front outer handle (LH) • Related wiring harness
L	Serial LFU	Body control module (BCM)	Under any condition	B+	• Body control module (BCM) • Related wiring harness
M	CAN BODY H	Climate control unit	Because this terminal is for communication, integrity determination using terminal voltage inspection is not possible.
N^*1	FR_GND	Front outer handle (RH)	Under any condition	1.0 or less	• Front outer handle (RH) • Related wiring harness
O	GND	Body ground	Under any condition	Approx. 0	• GND point • Related wiring harness
P	CAN BODY L	Climate control unit	Because this terminal is for communication, integrity determination using terminal voltage inspection is not possible.
Q	INT LF-ANT SHIELD	Keyless antenna (exterior, LF)	Under any condition	1.0 or less	Related wiring harness
R	GND	Body ground	Under any condition	Approx. 0	• GND point • Related wiring harness
S^*1	LF FL-	Front outer handle (LH)	Because this terminal is for communication, integrity determination using terminal voltage inspection is not possible.
T^*1	LF FL+	Front outer handle (LH)	Because this terminal is for communication, integrity determination using terminal voltage inspection is not possible.
U^*1	LF FR-	Front outer handle (RH)	Because this terminal is for communication, integrity determination using terminal voltage inspection is not possible.
V^*1	LF FR+	Front outer handle (RH)	Because this terminal is for communication, integrity determination using terminal voltage inspection is not possible.
W	LF F-	Keyless antenna (interior, front)	Because this terminal is for communication, integrity determination using terminal voltage inspection is not possible.
X	LF F+	Keyless antenna (interior, front)	Because this terminal is for communication, integrity determination using terminal voltage inspection is not possible.
Y^*1	LF BUM-	Keyless antenna (exterior, rear)	Because this terminal is for communication, integrity determination using terminal voltage inspection is not possible.
Z^*1	LF BUM+	Keyless antenna (exterior, rear)	Because this terminal is for communication, integrity determination using terminal voltage inspection is not possible.
AA^*1	LF R-	Keyless antenna (interior, rear)	Because this terminal is for communication, integrity determination using terminal voltage inspection is not possible.
AB^*1	LF R+	Keyless antenna (interior, rear)	Because this terminal is for communication, integrity determination using terminal voltage inspection is not possible.
AC	—	—	—	—	—
AD	—	—	—	—	—
AE	PATS-	Push button start	Because this terminal is for communication, integrity determination using terminal voltage inspection is not possible.
AF	PATS+	Push button start	Because this terminal is for communication, integrity determination using terminal voltage inspection is not possible.

*1 :With advanced keyless entry system