Infiniti M45 (Y34). Manual — part 201

POWER DOOR LOCK SYSTEM

BL-29

C

D

E

F

G

H

J

K

L

M

A

B

BL

Terminals and Reference Value for BCM

AIS001DA

Terminals and Reference Value for Driver Door Control Unit (LCU01)

AIS001DB

Terminals and Reference Value for Passenger and Rear LH, RH Door Control
Units

AIS001DC

TERMI-

NAL

WIRE

COLOR

ITEM

CONDITION

VOLTAGE (V)

(Approx.)

33

W

Rear LH door switch

Door open (ON)

→

close (OFF)

0

→

Battery voltage

37

LG

Passenger door switch

Door open (ON)

→

close (OFF)

0

→

Battery voltage

56

B

Ground

—

0

67

G/W

Data line A-3

—

—

68

W/B

IGN power supply

Ignition switch ON

Battery voltage

69

PU/W

Key switch

Key Inserted (ON)

→

key removed from IGN key cylinder (OFF)

Battery voltage

→

0

105

Y/L

Battery power supply

—

Battery voltage

113

B

Ground

—

0

142

R/Y

Driver door switch

Door open (ON)

→

close (OFF)

0

→

Battery voltage

143

W/L

Rear RH door switch

Door open (ON)

→

close (OFF)

0

→

Battery voltage

TERMI-

NAL

WIRE

COLOR

ITEM

CONDITION

VOLTAGE (V)

(Approx.)

5

L/Y

Local data line

—

6

G/Y

Door unlock sensor

OFF (Locked)

→

ON (Unlocked)

5

→

0

8

G/W

Data line A-3

—

—

9

PU/W

Door key cylinder unlock switch

OFF (Neutral)

→

ON (Unlocked)

5

→

0

10

GY

Door key cylinder lock switch

OFF (Neutral)

→

ON (Locked)

5

→

0

12

BR

Driver door lock actuator
(Unlock)

Door lock & unlock switch
(Free

→

Unlocked)

0

→

Battery voltage

14

Y/G

Battery power supply (C/B)

—

Battery voltage

15

B

Ground

—

0

17

SB

Driver door lock actuator
(Lock)

Door lock & unlock switch
(Free

→

Locked)

0

→

Battery voltage

SIIA0591J

TERMI-

NAL

WIRE

COLOR

ITEM

CONDITION

VOLTAGE (V)

(Approx.)

2

G/Y

Door unlock sensor

OFF (Locked)

→

ON (Unlocked)

5

→

0

*8

SB

Door lock actuator (Lock)

Door lock & unlock switch
(Free

→

Locked)

0

→

Battery voltage

*9

BR

Door lock actuator (Unlock)

Door lock & unlock switch
(Free

→

Unlocked)

0

→

Battery voltage

10

W/R

(Y/B)

Battery power supply (C/B)

—

Battery voltage

BL-30

POWER DOOR LOCK SYSTEM

*Only for passenger door control unit.
(

): Wire color for rear LH, RH door control unit.

Work Flow

AIS001DD

1.

Check the symptom and customer's requests.

2.

Understand the outline of system. Refer to

BL-19, "System Description"

.

3.

Perform the preliminary check. Refer to

BL-31, "Preliminary Check"

.

4.

Perform the communication inspection. If CONSULT-II is used, refer to

BL-34, "IVMS COMMUNICATION

INSPECTION"

. If CONSULT-II is not used, refer to

BL-37, "COMMUNICATION DIAGNOSIS"

. Is the

communication diagnosis result OK?
OK: GO TO step 7
NG: GO TO step 5

5.

Repair or replace depending on the diagnosis result.

6.

Perform the communication diagnosis again. If CONSULT-II is used, refer to

BL-34, "IVMS COMMUNICA-

TION INSPECTION"

. If CONSULT-II is not used, refer to

BL-37, "COMMUNICATION DIAGNOSIS"

. Is

communication diagnosis result OK?
OK: GO TO step 7
NG: GO TO step 5

7.

Perform the self-diagnosis. If CONSULT-II is used, refer to

BL-36, "SELF-DIAGNOSIS RESULTS"

. If

CONSULT-II is not used, refer to

BL-41, "POWER DOOR LOCK SYSTEM SELF-DIAGNOSIS"

. Is self-

diagnosis result OK?
OK: GO TO step 11
NG: GO TO step 8

8.

Repair or replace depending on the diagnosis result.

9.

Perform the self-diagnosis again. If CONSULT-II is used, refer to

BL-36, "SELF-DIAGNOSIS RESULTS"

.

If CONSULT-II is not used, refer to

BL-41, "POWER DOOR LOCK SYSTEM SELF-DIAGNOSIS"

. Is self-

diagnosis result OK?
OK: GO TO step 11
NG: GO TO step 8

10. Referring to trouble diagnosis chart, repair or replace the cause of the incident. Refer to

BL-42, "Symptom

Chart"

.

11. Does power door lock system operate normally? If it operates normally, GO TO step 12. If NG, GO TO

step 10.
YES: GO TO step 12
NO: GO TO step 10

12. Inspection END.

11

B

Ground

—

0

15

L/Y

Local data line

—

TERMI-

NAL

WIRE

COLOR

ITEM

CONDITION

VOLTAGE (V)

(Approx.)

SIIA0591J

POWER DOOR LOCK SYSTEM

BL-31

C

D

E

F

G

H

J

K

L

M

A

B

BL

Preliminary Check

AIS001DE

POWER SUPPLY AND GROUND CIRCUIT INSPECTION

1.

FUSE AND FUSIBLE LINK INSPECTION

Check if any of the following fuses are blown.

Refer to

BL-22, "Wiring Diagram – D/LOCK –"

.

Refer to

BL-22, "Wiring Diagram – D/LOCK –"

.

OK or NG

OK

>> GO TO 2.

NG

>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse, refer to

PG-

2, "POWER SUPPLY ROUTING"

.

2.

POWER SUPPLY CIRCUIT INSPECTION

Remove the connectors for BCM and driver door LCU or passenger,
rear LH, RH door control units, measure the voltage between the fol-
lowing terminals of connector and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Check harness for open or short.

Unit

Power source

Fuse No.

BCM

Battery power supply

3 (10A)

IGN power supply

1 (10A)

Unit

Power source

Fusible link location

Driver door control unit
Passenger door control unit
Rear LH door control unit
Rear RH door control unit

Battery power supply

H (40A)

Unit

Terminal

(wire color)

Ignition

switch

condition

Voltage (V)

Approx.

Connector

(+)

(–)

BCM (M4)

105 (Y/L)

Ground

OFF

Battery voltage

68 (W/B)

ON

Driver door control
unit (D8)

14 (Y/G)

OFF

Passenger door
control unit (D38)

10 (W/R)

OFF

Rear LH door control
unit (D58)

10 (Y/B)

Rear RH door con-
trol unit (D78)

10 (Y/B)

PIIA4452E

BL-32

POWER DOOR LOCK SYSTEM

3.

GROUND CIRCUIT INSPECTION

Check the continuity between the following connector terminals for
BCM, driver door LCU, passenger or rear RH, LH door control units
and ground.

OK or NG

OK

>> Power supply and ground circuit is OK.

NG

>> Repair or replace harness.

CONSULT-II Function

AIS001DF

CONSULT-II executes the following functions by combining data reception and command transmission via the
communication line from BCM. IVMS communication inspection, work support (only function setting of seats
and steering wheel), self-diagnosis, data monitor, and active test display.

DIAGNOSTIC ITEMS DESCRIPTION

Unit

Terminal

(wire color)

Continuity

Connector

(+)

(–)

BCM (M4)

56 (B)

Ground

Continuity should exist

113 (B)

Driver door control
unit (D8)

15 (B)

Passenger door con-
trol unit (D38)

11 (B)

Rear LH door control
unit (D58)

Rear RH door control
unit (D78)

PIIA4453E

IVMS diagnosis

position

Diagnosis mode

Description

IVMS-
COMM CHECK

IVMS-
COMM DIAGNOSIS

Diagnosis of continuity in the communication line(s), and diagnosis of the
function of the IVMS-communication interface between the body control mod-
ule and the local control units, accomplished by transmitting a signal from the
body control module to the local control units.

WAKE-UP DIAGNOSIS

Diagnosis of the“ wake-up” function of local control units by having a techni-
cian input the switch data into the local control unit that is in the temporary
“sleep” condition.