Infiniti QX56 (JA60). Manual - part 250

BCM (BODY CONTROL MODULE)

DLK-171

< ECU DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

DTC Inspection Priority Chart

INFOID:0000000005380585

If some DTCs are displayed at the same time, perform inspections one by one based on the following priority

chart.

DTC Index

INFOID:0000000005380586

NOTE:

Details of time display

• CRNT: Displays when there is a malfunction now or after returning to the normal condition until turning igni-

tion switch OFF 

→ ON again.

• 1 - 39: Displayed if any previous malfunction is present when current condition is normal. It increases like 1

→ 2 → 3...38 → 39 after returning to the normal condition whenever ignition switch OFF → ON. The counter

remains at 39 even if the number of cycles exceeds it. It is counted from 1 again when turning ignition switch

OFF 

→ ON after returning to the normal condition if the malfunction is detected again.

Display contents of CONSULT

Fail-safe

Cancellation

U1000: CAN COMM CIRCUIT

Inhibit engine cranking

When the BCM re-establishes communication with the other mod-
ules.

Priority

DTC

1

• U1000: CAN COMM CIRCUIT

2

• B2190: NATS ANTENNA AMP
• B2191: DIFFERENCE OF KEY
• B2192: ID DISCORD BCM-ECM
• B2193: CHAIN OF BCM-ECM
• B2013: STRG COMM 1
• B2552: INTELLIGENT KEY
• B2590: NATS MALFUNCTION

3

• C1729: VHCL SPEED SIG ERR
• C1735: IGNITION SIGNAL

4

• C1708: [NO DATA] FL
• C1709: [NO DATA] FR
• C1710: [NO DATA] RR
• C1711: [NO DATA] RL
• C1712: [CHECKSUM ERR] FL
• C1713: [CHECKSUM ERR] FR
• C1714: [CHECKSUM ERR] RR
• C1715: [CHECKSUM ERR] RL
• C1716: [PRESSDATA ERR] FL
• C1717: [PRESSDATA ERR] FR
• C1718: [PRESSDATA ERR] RR
• C1719: [PRESSDATA ERR] RL
• C1720: [CODE ERR] FL
• C1721: [CODE ERR] FR
• C1722: [CODE ERR] RR
• C1723: [CODE ERR] RL
• C1724: [BATT VOLT LOW] FL
• C1725: [BATT VOLT LOW] FR
• C1726: [BATT VOLT LOW] RR
• C1727: [BATT VOLT LOW] RL

CONSULT display

Fail-safe

Intelligent Key 

warning lamp ON

Tire pressure 

monitor warning 

lamp ON

Reference page

No DTC is detected.
further testing
may be required.

—

—

—

—

U1000: CAN COMM CIRCUIT

—

—

—

BCS-32

B2190: NATS ANTENNA AMP

—

—

—

SEC-31

 

DLK-172

< ECU DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

BCM (BODY CONTROL MODULE)

B2191: DIFFERENCE OF KEY

—

—

—

SEC-34

B2192: ID DISCORD BCM-ECM

—

—

—

SEC-35

B2193: CHAIN OF BCM-ECM

—

—

—

SEC-37

B2552: INTELLIGENT KEY

—

—

—

SEC-39

B2590: NATS MALFUNCTION

—

—

—

SEC-40

C1708: [NO DATA] FL

—

—

—

WT-14

C1709: [NO DATA] FR

—

—

—

WT-14

C1710: [NO DATA] RR

—

—

—

WT-14

C1711: [NO DATA] RL

—

—

—

WT-14

C1712: [CHECKSUM ERR] FL

—

—

—

WT-16

C1713: [CHECKSUM ERR] FR

—

—

—

WT-16

C1714: [CHECKSUM ERR] RR

—

—

—

WT-16

C1715: [CHECKSUM ERR] RL

—

—

—

WT-16

C1716: [PRESSDATA ERR] FL

—

—

—

WT-18

C1717: [PRESSDATA ERR] FR

—

—

—

WT-18

C1718: [PRESSDATA ERR] RR

—

—

—

WT-18

C1719: [PRESSDATA ERR] RL

—

—

—

WT-18

C1720: [CODE ERR] FL

—

—

—

WT-16

C1721: [CODE ERR] FR

—

—

—

WT-16

C1722: [CODE ERR] RR

—

—

—

WT-16

C1723: [CODE ERR] RL

—

—

—

WT-16

C1724: [BATT VOLT LOW] FL

—

—

—

WT-16

C1725: [BATT VOLT LOW] FR

—

—

—

WT-16

C1726: [BATT VOLT LOW] RR

—

—

—

WT-16

C1727: [BATT VOLT LOW] RL

—

—

—

WT-16

C1729: VHCL SPEED SIG ERR

—

—

—

WT-19

C1735: IGNITION SIGNAL

—

—

—

WT-20

CONSULT display

Fail-safe

Intelligent Key 

warning lamp ON

Tire pressure 

monitor warning 

lamp ON

Reference page

INTELLIGENT KEY UNIT

DLK-173

< ECU DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

INTELLIGENT KEY UNIT

Reference Value

INFOID:0000000005380589

VALUES ON THE DIAGNOSIS TOOL

Monitor Item

Condition

Value/Status

PUSH SW

When ignition knob switch (push switch) is released

OFF

When ignition knob switch (push switch) is pushed

ON

KEY SW

When ignition key is removed from ignition cylinder

OFF

When ignition key is inserted into ignition cylinder

ON

DR REQ SW

When left door request switch is not pressed (driver side)

OFF

When left door request switch is pressed (driver side)

ON

AS REQ SW

When right door request switch is not pressed (passenger side)

OFF

When right door request switch is pressed (passenger side)

ON

BD/TR REQ SW

When back door handle is released

OFF

When back door handle is pulled

ON

IGN SW

Ignition switch OFF or ACC

OFF

Ignition switch ON

ON

ACC SW

Ignition switch OFF

OFF

Ignition switch ACC or ON

ON

STOP LAMP SW

When the brake pedal is not depressed

OFF

When the brake pedal is depressed

ON

P RANGE SW

When selector lever is in any position other than P or N

OFF

When selector lever is in P or N position

ON

BD OPEN SW

Power liftgate switch OFF

OFF

While the power liftgate switch is turned ON

ON

TR CANCEL SW

Trunk lid opener cancel switch OFF

OFF

Trunk lid opener cancel switch ON

ON

DOOR LOCK SIG

Other than power door lock switch LOCK

OFF

Power door lock switch LOCK

ON

DOOR UNLOCK SIG

Other than power door lock switch UNLOCK

OFF

Power door lock switch UNLOCK

ON

KEYLESS-PANIC

When PANIC button of Intelligent Key is not pressed

OFF

When PANIC button of Intelligent Key is pressed

ON

KEYLS PBD SIG

When liftgate button of Intelligent Key is not pressed and held

OFF

When liftgate button of Intelligent Key is pressed and held 

ON

DOOR SW-DR

Driver door closed

CLOSE

Driver door opened

OPEN

DOOR SW-AS

Passenger door closed

CLOSE

Passenger door opened

OPEN

DOOR SW-RR

Rear door RH closed

CLOSE

Rear door RH opened

OPEN

DOOR SW-RL

Rear door LH closed

CLOSE

Rear door LH opened

OPEN

DLK-174

< ECU DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

INTELLIGENT KEY UNIT

Terminal Layout - Intelligent Key Unit

INFOID:0000000005380590

Physical Values - Intelligent Key Unit

INFOID:0000000005380591

DOOR BK SW

Back door opener switch OFF

CLOSE

While the back door opener switch is turned ON

OPEN

VEHICLE SPEED

While driving

Equivalent to speedometer reading

Monitor Item

Condition

Value/Status

WIIA1168E

Terminal

Wire 

Color

Item

Condition

Voltage (V)

Approx.

Ignition 

Switch Po-

sition

Operation or Conditions

1

L/Y

Steering lock sole-
noid power supply

LOCK

—

5

2

L

CAN-H

—

—

—

3

P

CAN-L

—

—

—

4

GR

Intelligent Key warn-
ing buzzer (front of 
vehicle)

LOCK

Operate door request 

switch.

Buzzer OFF

Battery voltage

Buzzer ON

0

5

B/W

Front door request 
switch LH

—

Press front door request switch LH.

0

Other than above

Battery voltage

6

G/R

Ignition switch (ON)

ON

—

Battery voltage

7

B/R

Key switch

LOCK

Insert mechanical key into ignition key 
cylinder.

Battery voltage

Remove mechanical key from ignition 
key cylinder.

0

8

G

Remote keyless en-
try receiver ground

—

—

0

9

GR

Remote keyless en-
try receiver signal

—

When remote keyless entry receiver re-
ceives signal from keyfob.

Stand-by

OCC3879D