Nissan Qashqai (2007-2010). Manual — part 1849

LAN

CAN COMMUNICATION CIRCUIT

LAN-1421

< COMPONENT DIAGNOSIS >

[CAN SYSTEM (TYPE 96)]

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Is the measurement value within the specification?

YES

>> GO TO 5.

NO

>> Replace the ECM and/or the IPDM E/R.

5.

CHECK SYMPTOM

Connect all the connectors. Check if the symptoms described in the “Symptom (Results from interview with
customer)” are reproduced.

Inspection result

Reproduced>>GO TO 6.
Non-reproduced>>Start the diagnosis again. Follow the trouble diagnosis procedure when past error is

detected.

6.

CHECK UNIT REPRODUCTION

Perform the reproduction test as per the following procedure for each unit.
1.

Turn the ignition switch OFF.

2.

Disconnect the battery cable from the negative terminal.

3.

Disconnect one of the unit connectors of CAN communication system.
NOTE:
ECM and IPDM E/R have a termination circuit. Check other units first.

4.

Connect the battery cable to the negative terminal. Check if the symptoms described in the “Symptom
(Results from interview with customer)” are reproduced.
NOTE:
Although unit-related error symptoms occur, do not confuse them with other symptoms.

Inspection result

Reproduced>>Connect the connector. Check other units as per the above procedure.
Non-reproduced>>Replace the unit whose connector was disconnected.

IPDM E/R

Resistance (

Ω

)

Terminal No.

28

29

Approx. 108 – 132

PCS

PCS-1

ELECTRICAL & POWER CONTROL

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SECTION

PCS

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CONTENTS

POWER CONTROL SYSTEM

IPDM E/R

FUNCTION DIAGNOSIS . . . . . . . ...

2

RELAY CONTROL SYSTEM . . . . . . . ..

2

System Diagram . . . . . . . . . . . . . ....

2

System Description . . . . . . . . . . . . ...

2

Component Parts Location . . . . . . . . . ....

3

SIGNAL BUFFER SYSTEM . . . . . . . .

5

System Diagram . . . . . . . . . . . . . ....

5

System Description . . . . . . . . . . . . ...

5

Component Parts Location . . . . . . . . . ....

5

POWER CONSUMPTION CONTROL SYS-
TEM . . . . . . . . . . . . . . . . . .

7

System Diagram . . . . . . . . . . . . . ....

7

System Description . . . . . . . . . . . . ...

7

Component Parts Location . . . . . . . . . ....

7

DIAGNOSIS SYSTEM (IPDM E/R) . . . . . ..

9

Diagnosis Description . . . . . . . . . . . ...

9

CONSULT - III Function (IPDM E/R) . . . . . ...

11

COMPONENT DIAGNOSIS . . . . . . .

14

U1000 CAN COMM CIRCUIT . . . . . . . .

14

Description . . . . . . . . . . . . . . . ..

14

DTC Logic . . . . . . . . . . . . . . . ...

14

Diagnosis Procedure . . . . . . . . . . . ...

14

B2098 IGNITION RELAY ON STUCK . . . ...

15

Description . . . . . . . . . . . . . . . ..

15

DTC Logic . . . . . . . . . . . . . . . ...

15

Diagnosis Procedure . . . . . . . . . . . ...

15

B2099 IGNITION RELAY OFF STUCK . . .

16

Description . . . . . . . . . . . . . . . ...

16

DTC Logic . . . . . . . . . . . . . . . .

16

Diagnosis Procedure . . . . . . . . . . . ...

16

B2100 EEPROM . . . . . . . . . . . .

17

DTC Logic . . . . . . . . . . . . . . . .

17

Diagnosis Procedure . . . . . . . . . . . ...

17

POWER SUPPLY AND GROUND CIRCUIT .

18

Diagnosis Procedure . . . . . . . . . . . ...

18

ECU DIAGNOSIS . . . . . . . . . . .

19

IPDM E/R (INTELLIGENT POWER DISTRI-
BUTION MODULE ENGINE ROOM) . . . .

19

Reference Value . . . . . . . . . . . . . ..

19

Wiring Diagram - IPDM E/R - . . . . . . . . ..

25

Fail Safe . . . . . . . . . . . . . . . . ..

28

DTC Index . . . . . . . . . . . . . . . ...

30

PRECAUTION . . . . . . . . . . . ..

31

PRECAUTIONS . . . . . . . . . . . . .

31

Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" . . . . . . . . . . . . . . . . .

31

ON-VEHICLE REPAIR . . . . . . . . .

32

IPDM E/R (INTELLIGENT POWER DISTRI-
BUTION MODULE ENGINE ROOM) . . . .

32

Exploded View . . . . . . . . . . . . . . .

32

Removal and Installation . . . . . . . . . . .

32

PCS-2

< FUNCTION DIAGNOSIS >

[IPDM E/R]

RELAY CONTROL SYSTEM

FUNCTION DIAGNOSIS

RELAY CONTROL SYSTEM

System Diagram

INFOID:0000000000926979

NOTE:
• *1: HR engine models
• *2: MR engine and K9K engine models
• *3: With vehicle security (theft warning) system
• *4: K9K engine models

System Description

INFOID:0000000000926980

JPMIA0231GB

PCS

RELAY CONTROL SYSTEM

PCS-3

< FUNCTION DIAGNOSIS >

[IPDM E/R]

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IPDM E/R activates the internal control circuit to perform the relay ON-OFF control according to the input sig-
nals from various sensors and the request signals received from control units via CAN communication.

CAUTION:

IPDM E/R integrated relays cannot be removed.

Component Parts Location

INFOID:0000000000926981

Control relay

Input/output

Transmit unit

Control part

Reference page

• Headlamp low relay
• Headlamp high relay

• Low beam request signal
• High beam request signal

BCM (CAN)

• Headlamp low
• Headlamp high

•

EXL-11

(xenon headlamp)

•

EXL-191

(halogen headlamp)

Front fog lamp relay

Front fog light request signal

BCM (CAN)

Front fog lamp

•

EXL-17

(xenon headlamp)

•

EXL-197

(halogen headlamp)

Tail lamp relay

Position light request signal

BCM (CAN)

• Parking lamp
• License plate

lamp

• Tail lamp

•

EXL-23

(xenon type headlamp)

•

EXL-201

(halogen type head-

lamp)

Illuminations

INL-13

• Front wiper relay
• Front wiper high relay

Front wiper request signal

BCM (CAN)

Front wiper

WW-6

Front wiper auto stop signal

Front wiper motor

Rear window defogger
relay

Rear window defogger
switch signal

BCM (CAN)

Rear window de-
fogger

DEF-4

Starter relay

Ignition and starter request
signal

BCM (CAN)

Starter motor

•

SEC-9

(with INTELLIGENT KEY)

•

SEC-161

(without INTELLIGENT KEY)

• Cooling fan relay-1
• Cooling fan relay-2
• Cooling fan relay-3

Cooling fan speed request
signal

ECM (CAN)

Cooling fan

•

EC-68

[HR16DE (with EURO-OBD)]

•

EC-407

[HR16DE (without EURO-OBD)]

•

EC-685

[MR20DE (with EURO-OBD)]

•

EC-1029

[MR20DE (without EURO-OBD)]

•

EC-1309

(K9K)

A/C relay

A/C compressor request sig-
nal

ECM (CAN)

A/C compressor
(magnet clutch)

•

HAC-45

(automatic air condition-

er)

•

HAC-145

(manual air condition-

er)

Ignition relay

Ignition switch ON signal

Ignition switch

Ignition relay

PCS-15

Headlamp washer relay

Headlamp washer request
signal

BCM (CAN)

Headlamp wash-
er

WW-15

Horn relay

Theft warning horn request
signal

BCM (CAN)

Horn

•

SEC-19

(with INTELLIGENT KEY)

•

SEC-165

(without INTELLIGENT KEY)

• PTC heater relay 1
• PTC heater relay 2

PTC relay request signal

BCM (CAN)

PTC heater

•

HAC-46

(automatic air conditioner)

•

HAC-146

(manual air conditioner)