Nissan Qashqai (2007-2010). Manual - part 997

DIAGNOSIS SYSTEM (INTELLIGENT KEY UNIT)

DLK-67

< FUNCTION DIAGNOSIS >

[WITH I-KEY, WITHOUT SUPER LOCK]

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

*1

: The item is only for MT model.

INDICATOR

This test is able to check warning lamp operation.
• BLUE ON: Key warning lamp (green) illuminates.
• RED ON: Key warning lamp (red) illuminates.
• KNOB ON: Lock warning lamp illuminates.
• BLUE IND: Key warning lamp (green) flashes.
• RED IND: Key warning lamp (red) flashes.
• KNOB IND: Lock warning lamp flashes.
• OFF

KEY LOCK SOLENOID

*1

This test is able to check key interlock operation. 
• LOCK: Key interlock is active.
• UNLOCK: Key interlock is inactive.

Test item

Description

DLK-68

< COMPONENT DIAGNOSIS >

[WITH I-KEY, WITHOUT SUPER LOCK]

U1000 CAN COMM CIRCUIT

COMPONENT DIAGNOSIS

U1000 CAN COMM CIRCUIT

Description

INFOID:0000000001078091

CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Modern
vehicle is equipped with many electronic control unit, and each control unit shares information and links with
other control units during operation (not independent). In CAN communication, control units are connected
with 2 communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less
wiring. Each control unit transmits/receives data but selectively reads required data only.
CAN Communication Signal Chart, refer to 

LAN-59, "CAN Communication Signal Chart"

.

DTC Logic

INFOID:0000000000939071

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000000939072

1.

PERFORM SELF DIAGNOSTIC

1.

Turn ignition switch ON and wait for 2 seconds or more.

2.

Check “Self Diagnostic Result”.

Is “CAN COMM CIRCUIT” displayed?

YES

>> Refer to 

LAN-46, "Trouble Diagnosis Flow Chart"

.

NO

>> Refer to 

GI-39, "Intermittent Incident"

.

DTC

CONSULT-III display 

description

DTC Detection Condition

Possible cause

U1000

CAN COMM CIRCUIT

When Intelligent Key unit cannot communi-
cate CAN communication signal continuous-
ly for 2 seconds or more.

In CAN communication system, any item (or items) 
of the following listed below is malfunctioning.
• Transmission
• Receiving (BCM)
• Receiving (IPDM E/R)
• Receiving (ECM)
• Receiving (METER/M&A)
• Receiving (MULTI AV)

U1010 CONTROL UNIT (CAN)

DLK-69

< COMPONENT DIAGNOSIS >

[WITH I-KEY, WITHOUT SUPER LOCK]

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

U1010 CONTROL UNIT (CAN)

Description

INFOID:0000000001078092

CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Modern
vehicle is equipped with many electronic control unit, and each control unit shares information and links with
other control units during operation (not independent). In CAN communication, control units are connected
with 2 communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less
wiring. Each control unit transmits/receives data but selectively reads required data only.
CAN Communication Signal Chart, refer to 

LAN-59, "CAN Communication Signal Chart"

.

DTC Logic

INFOID:0000000000939073

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000000939074

1.

REPLACE INTELLIGENT KEY UNIT

When DTC [U1010] is detected, replace Intelligent Key unit.

>> Replace Intelligent Key unit.

Special Repair Requirement

INFOID:0000000000939075

1.

REQUIRED WORK WHEN REPLACING INTELLIGENT KEY UNIT

Initialize control unit. Refer to CONSULT-III operation manual NATS-IVIS/NVIS.

>> Work end.

DTC

CONSULT-III display de-

scription

DTC Detection Condition

Possible cause

U1010

CONTROL UNIT (CAN)

When detecting error during the initial diagnosis of CAN control-
ler of Intelligent Key unit.

Intelligent Key unit

DLK-70

< COMPONENT DIAGNOSIS >

[WITH I-KEY, WITHOUT SUPER LOCK]

B2552 INTELLIGENT KEY

B2552 INTELLIGENT KEY

Description

INFOID:0000000001115364

Intelligent key unit performs engine start operation and steering lock control by crosschecking ID with the Intel-
ligent key.

DTC Logic

INFOID:0000000001115365

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON.

2.

Check “Self diagnostic result” with CONSULT-III.

Is DTC detected?

YES

>> Refer to 

DLK-70, "Diagnosis Procedure"

.

NO

>> INSPECTION END.

Diagnosis Procedure

INFOID:0000000001115366

1.

REPLACE INTELLIGENT KEY UNIT

1.

Replace Intelligent Key unit.

2.

Perform initialization with CONSULT-III. Re-register all mechanical keys. Refer to “CONSULT-III Opera-
tion Manual NATS”.

3.

Start the engine.

Does the engine start?

YES

>> INSPECTION END

NO

>> Perform “DTC confirmation procedure”. Refer to 

DLK-70, "DTC Logic"

.

Special Repair Requirement

INFOID:0000000001115367

1.

REQUIRED WORK WHEN REPLACING INTELLIGENT KEY UNIT

Initialize control unit. Refer to CONSULT-III operation manual NATS-IVIS/NVIS.

>> Work end.

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B2552

INTELLIGENT KEY 
UNIT

Malfunction is detected inside Intelligent 
key unit.

• Intelligent Key unit