LAN hệ THỐNG MẠNG LAN nội bộ TRÊN INFINITI FX35, FX45 2003

HỆ THỐNG MẠNG LAN NỘI BỘ TRÊN INFINITI FX35, FX45 2003

LAN SYSTEM

CONTENTS

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LAN

CAN

PRECAUTIONS 4

Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT BELT PRE-TEN-SIONER” 4

Precautions When Using CONSULT-II 4

CHECK POINTS FOR USING CONSULT-II 4

Precautions For Trouble Diagnosis 4

CAN SYSTEM 4

Precautions For Harness Repair 5

CAN SYSTEM 5

CAN COMMUNICATION 6

System Description 6

CAN Communication Unit 6

TYPE 1/TYPE2 6

TYPE 3 9

TYPE 4/TYPE5 13

TYPE 6 16

CAN SYSTEM (TYPE 1) 20

System Description 20

Component Parts and Harness Connector Location 20

Wiring Diagram - CAN - 21

Work Flow 23

CHECK SHEET 25

CHECK SHEET RESULTS (EXAMPLE) 27

Circuit Check Between TCM and Data Link Con-nector 40

Circuit Check Between Data Link Connector and Unified Meter and A/C Amp 40

Circuit Check Between Unified Meter and A/C Amp and ABS Actuator and Electric Unit (Control Unit) 41

ECM Circuit Check 41

TCM Circuit Check 42

Display Unit Circuit Check 42

Data Link Connector Circuit Check 43

BCM Circuit Check 43

Steering Angle Sensor Circuit Check 44

Unified Meter and A/C Amp Circuit Check 44

ABS Actuator and Electric Unit (Control Unit) Circuit Check 45

IPDM E/R Circuit Check 45

CAN Communication Circuit Check 46

IPDM E/R Ignition Relay Circuit Check 50

Component Inspection 50

ECM/IPDM E/R INTERNAL CIRCUIT INSPEC-TION 50

CAN SYSTEM (TYPE 2) 51

System Description 51

Component Parts and Harness Connector Location 51

Wiring Diagram - CAN - 52

Work Flow 54

CHECK SHEET 56

CHECK SHEET RESULTS (EXAMPLE) 58

Circuit Check Between TCM and Data Link Con-nector 73

Circuit Check Between Data Link Connector and Unified Meter and A/C Amp 73

Circuit Check Between Unified Meter and A/C Amp and ABS Actuator and Electric Unit (Control Unit) 74

Circuit Check Between ABS Actuator and Electric Unit (Control Unit) and Driver Seat Control Unit 75

ECM Circuit Check 75

TCM Circuit Check 76

Display Unit Circuit Check 76

Data Link Connector Circuit Check 77

BCM Circuit Check 77

Steering Angle Sensor Circuit Check 78

Unified Meter and A/C Amp Circuit Check 78

ABS Actuator and Electric Unit (Control Unit) Circuit Check 79

Driver Seat Control Unit Circuit Check 79

IPDM E/R Circuit Check 80

CAN Communication Circuit Check 81

IPDM E/R Ignition Relay Circuit Check 85

Component Inspection 85

ECM/IPDM E/R INTERNAL CIRCUIT INSPEC-TION 85

CAN SYSTEM (TYPE 3) 86

System Description 86

Component Parts and Harness Connector Location 86

CHECK SHEET 93

CHECK SHEET RESULTS (EXAMPLE) 96

Circuit Check Between TCM and Data Link Con-nector 115

Circuit Check Between Data Link Connector and Unified Meter and A/C Amp 116

Circuit Check Between Unified Meter and A/C Amp and ABS Actuator and Electric Unit (Control Unit) 116 Circuit Check Between ABS Actuator and Electric Unit (Control Unit) and Driver Seat Control Unit 117

ECM Circuit Check 118

TCM Circuit Check 118

Display Control Unit Circuit Check 119

Low Tire Pressure Warning Control Unit Circuit Check 119

ICC Unit Circuit Check 120

Intelligent Key Unit Circuit Check 120

Data Link Connector Circuit Check 121

BCM Circuit Check 121

Steering Angle Sensor Circuit Check 122

Unified Meter and A/C Amp Circuit Check 122

ICC Sensor Circuit Check 123

ABS Actuator and Electric Unit (Control Unit) Circuit Check 123

Driver Seat Control Unit Circuit Check 124

IPDM E/R Circuit Check 125

CAN Communication Circuit Check 126

IPDM E/R Ignition Relay Circuit Check 131

Component Inspection 131

ECM/IPDM E/R INTERNAL CIRCUIT INSPEC-TION 131

CAN SYSTEM (TYPE 4) 132

System Description 132

Component Parts and Harness Connector Location 132 Schematic 133

Wiring Diagram - CAN - 134

Work Flow 137

CHECK SHEET 139

CHECK SHEET RESULTS (EXAMPLE) 141

Circuit Check Between TCM and Data Link Con-nector 155

Circuit Check Between Data Link Connector and Unified Meter and A/C Amp 155

Circuit Check Between Unified Meter and A/C Amp and ABS Actuator and Electric Unit (Control Unit) 156 ECM Circuit Check 156

TCM Circuit Check 157

Display Unit Circuit Check 157

AWD Control Unit Circuit Check 158

Data Link Connector Circuit Check 158

BCM Circuit Check 159

Steering Angle Sensor Circuit Check 159

Unified Meter and A/C Amp Circuit Check 160

ABS Actuator and Electric Unit (Control Unit) Circuit Check 160

IPDM E/R Circuit Check 161

ECM/IPDM E/R INTERNAL CIRCUIT INSPEC-TION 165

CAN SYSTEM (TYPE 5) 166

System Description .166

Component Parts and Harness Connector Location 166 Schematic 167

Wiring Diagram - CAN - .168

Work Flow .171

CHECK SHEET .173

CHECK SHEET RESULTS (EXAMPLE) 175

Circuit Check Between TCM and Data Link Con-nector 191

Circuit Check Between Data Link Connector and Unified Meter and A/C Amp 191

Circuit Check Between Unified Meter and A/C Amp and ABS Actuator and Electric Unit (Control Unit) 192 Circuit Check Between ABS Actuator and Electric Unit (Control Unit) and Driver Seat Control Unit .193

ECM Circuit Check 193

TCM Circuit Check .194

Display Unit Circuit Check .194

AWD Control Unit Circuit Check .195

Data Link Connector Circuit Check .195

BCM Circuit Check 196

Steering Angle Sensor Circuit Check 196

Unified Meter and A/C Amp Circuit Check 197

ABS Actuator and Electric Unit (Control Unit) Circuit Check 197

Driver Seat Control Unit Circuit Check 198

IPDM E/R Circuit Check 199

CAN Communication Circuit Check .199

IPDM E/R Ignition Relay Circuit Check 204

Component Inspection .204

ECM/IPDM E/R INTERNAL CIRCUIT INSPEC-TION 204

CAN SYSTEM (TYPE 6) 205

System Description .205

Component Parts and Harness Connector Location 205 Schematic 206

Wiring Diagram - CAN - .207

Work Flow .210

CHECK SHEET .212

CHECK SHEET RESULTS (EXAMPLE) 215

Circuit Check Between TCM and Data Link Con-nector 236

Circuit Check Between Data Link Connector and Unified Meter and A/C Amp 237

Circuit Check Between Unified Meter and A/C Amp and ABS Actuator and Electric Unit (Control Unit) 237 Circuit Check Between ABS Actuator and Electric Unit (Control Unit) and Driver Seat Control Unit .238

ECM Circuit Check 239

TCM Circuit Check .239

Display Control Unit Circuit Check 240

Low Tire Pressure Warning Control Unit Circuit Check 240

C

D

E

F

G

H

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L

M

B

LAN

Data Link Connector Circuit Check 242

BCM Circuit Check 243

Steering Angle Sensor Circuit Check 243

Unified Meter and A/C Amp Circuit Check 244

ICC Sensor Circuit Check 244

ABS Actuator and Electric Unit (Control Unit) Circuit CAN Communication Circuit Check 247

IPDM E/R Ignition Relay Circuit Check 252

Component Inspection 252

ECM/IPDM E/R INTERNAL CIRCUIT INSPEC-TION 252

PRECAUTIONS

Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used alongwith a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certaintypes of collision This system includes seat belt switch inputs and dual stage front air bag modules The SRSsystem uses the seat belt switches to determine the front air bag deployment, and may only deploy one frontair bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.Information necessary to service the system safely is included in the SRS and SB section of this Service Man-ual

WARNING:

● To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death

in the event of a collision which would result in air bag inflation, all maintenance must be formed by an authorized NISSAN/INFINITI dealer.

per-● Improper maintenance, including incorrect removal and installation of the SRS, can lead to sonal injury caused by unintentional activation of the system For removal of Spiral Cable and Air Bag Module, see the SRS section.

per-● Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this Service Manual SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness connectors.

When connecting CONSULT-II to data link connector, connect them through CONSULT-II CONVERTER

CAUTION:

If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be detected in self-diagnosis depending on control unit which carry out CAN communication.

CHECK POINTS FOR USING CONSULT-II

1 Has CONSULT-II been used without connecting CONSULT-II CONVERTER on this vehicle?

3 Based on self-diagnosis results unrelated to CAN communication, carry out the inspection

4 Malfunctions may be detected in self-diagnosis depending on control units carrying out CAN tion Therefore, erase the self-diagnosis results

communica-5 Diagnose CAN communication system Refer to LAN-6, "CAN Communication Unit"

CAN SYSTEM

● Do not apply voltage of 7.0V or higher to the measurement terminals

● Use the tester with its open terminal voltage being 7.0V or less

● Be sure to turn ignition switch off and disconnect negative battery terminal before checking the circuit

● Solder the repaired parts, and wrap with tape [Frays of twisted

line must be within 110 mm (4.33 in)]

● Do not perform bypass wire connections for the repair parts

(The spliced wire will become separated and the characteristics

of twisted line will be lost.)

PKIA0306E

PKIA0307E

CAN COMMUNICATION

CAN (Controller Area Network) is a serial communication line for real time application It is an on-vehicle tiplex communication line with high data communication speed and excellent error detection ability Many elec-tronic control units are equipped onto a vehicle, and each control unit shares information and links with othercontrol units during operation (not independent) In CAN communication, control units are connected with 2communication 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

Go to CAN system, when selecting your car model from the following table

Automatic drive positioner × × × ×

CAN system trouble diagnosis LAN-20 LAN-51 LAN-86 LAN-132 LAN-166 LAN-205

SKIA6171E

ing angle sensor

Steer-Unified meter and A/

C amp.

ABS actua- tor and electric unit (con- trol unit)

Driver seat control unit

IPDM E/R

Engine status signal T R

Engine coolant temperature signal T R R

A/T self-diagnosis signal R T

Accelerator pedal position signal T R R

Closed throttle position signal T R

Wide open throttle position signal T R

Battery voltage signal T R

Stop lamp switch signal R T

Fuel consumption monitor signal T R R

Input shaft revolution signal R T

Output shaft revolution signal R T

A/C switch signal R T

A/C compressor feedback signal T R

Blower fan motor switch signal R T

Cooling fan speed request signal T R

Position light request signal R T R R

Day time running light request signal T R

Turn LED burnout status signal R T

Fuel level sensor signal R T

Fuel level low warning signal R T

ASCD operation signal T R

ASCD OD cancel request T R

Front wiper stop position signal R T Rear window defogger switch signal T R Rear window defogger control signal R R R T

Theft warning horn request signal T R

Steering angle sensor signal T R

VDC OFF indicator lamp signal R T

SLIP indicator lamp signal R T

A/T CHECK indicator lamp signal T R

Signals ECM TCM

play unit

Dis-BCM

ing angle sensor

Steer-Unified meter and A/

C amp.

ABS actua- tor and electric unit (con- trol unit)

Driver seat control unit

IPDM E/R

A/T position indicator lamp signal T R

A/T shift schedule change demand signal R T

Manual mode shift up signal R T

Manual mode shift down signal R T

Manual mode indicator signal T R

Distance to empty signal R T

Signals ECM TCM

play unit

Dis-BCM

ing angle sensor

Steer-Unified meter and A/

C amp.

ABS actua- tor and electric unit (con- trol unit)

Driver seat control unit

IPDM E/R

SKIA6173E

Signals ECM TCM

play con- trol unit

Dis-Low tire pres- sure warn- ing con- trol unit

ICC unit

gent Key unit BCM

Intelli-Steeri

ng angle sen- sor

fied meter and A/C amp.

Uni-ICC sen- sor

ABS actu- ator and elec- tric unit (con- trol unit)

Driver seat con- trol unit

IPDM E/R

Engine speed signal T R R R R R

Engine status signal T R

Engine coolant

A/T self-diagnosis signal R T

Battery voltage signal T R

Stop lamp switch signal R T

A/C compressor request

A/C compressor

Position light request

High beam request

Front fog light request

Dis-Low tire pres- sure warn- ing con- trol unit

ICC unit

gent Key unit BCM

Intelli-Steeri

ng angle sen- sor

fied meter and A/C amp.

Uni-ICC sen- sor

ABS actu- ator and elec- tric unit (con- trol unit)

Driver seat con- trol unit IPDM E/R

Key fob door unlock

Fuel level sensor signal R T

Fuel level low warning

ICC operation signal R T

Front wiper request

Theft warning horn

Steering angle sensor

Tire pressure data signal R T

VDC OFF indicator lamp

Dis-Low tire pres- sure warn- ing con- trol unit

ICC unit

gent Key unit BCM

Intelli-Steeri

ng angle sen- sor

fied meter and A/C amp.

Uni-ICC sen- sor

ABS actu- ator and elec- tric unit (con- trol unit)

Driver seat con- trol unit IPDM E/R

Brake warning lamp

Distance to empty signal R T

Hand brake switch signal R T

Door lock/unlock request

Door lock/unlock status

Starter permission signal T R

Back door open request

Power window open

Alarm request signal T R

ICC warning lamp signal T R

ICC system display

Current gear position

Steering switch signal T R

ASCD operation signal T R

ASCD OD cancel

request T R

ICC OD cancel request R R T

A/T CHECK indicator

A/T position indicator

A/T shift schedule

Not manual mode signal R T

Manual mode shift up

Dis-Low tire pres- sure warn- ing con- trol unit

ICC unit

gent Key unit BCM

Intelli-Steeri

ng angle sen- sor

fied meter and A/C amp.

Uni-ICC sen- sor

ABS actu- ator and elec- tric unit (con- trol unit)

Driver seat con- trol unit IPDM E/R

Dis-AWD con- trol unit BCM

ing angle sensor

Steer- fied meter and A/

Uni-C amp.

ABS actua- tor and elec- tric unit (con- trol unit)

Driver seat con- trol unit

IPDM E/R

A/T self-diagnosis signal R T

Stop lamp switch signal R R T

Battery voltage signal T R

Closed throttle position signal T R

Wide open throttle position signal T R

Engine speed signal T R R R R R

Engine status signal T R

Engine coolant temperature signal T R R

Accelerator pedal position signal T R R R

Fuel consumption monitor signal T R R

Input shaft revolution signal R T

Output shaft revolution signal R T

A/C compressor feedback signal T R

Blower fan motor switch signal R T

Position light request signal R T R R

Day time running light request signal T R

Turn LED burnout status signal R T

Signals ECM TCM

play unit

Dis-AWD con- trol unit BCM

ing angle sensor

Steer- fied meter and A/

Uni-C amp.

ABS actua- tor and elec- tric unit (con- trol unit)

Driver seat con- trol unit IPDM E/R

Fuel level sensor signal R T

Fuel level low warning signal R T

Front wiper stop position signal R T

Rear window defogger switch signal T R

Rear window defogger control signal R R R T

Theft warning horn request signal T R

Steering angle sensor signal T R

VDC OFF indicator lamp signal R T

SLIP indicator lamp signal R T

AWD lock indicator lamp signal T R

Distance to empty signal R T

Hand brake switch signal R R T

ASCD operation signal T R

ASCD OD cancel request T R

A/T CHECK indicator lamp signal T R

A/T position indicator lamp signal T R

A/T shift schedule change demand signal R T

Manual mode shift up signal R T

Manual mode shift down signal R T

Manual mode indicator signal T R

Signals ECM TCM

play unit

Dis-AWD con- trol unit BCM

ing angle sensor

Steer- fied meter and A/

Uni-C amp.

ABS actua- tor and elec- tric unit (con- trol unit)

Driver seat con- trol unit IPDM E/R

Dis-Low tire pres- sure warn ing con- trol unit

AWD con- trol unit

ICC unit

ligen

Intel-t Key unit BCM

Stee ring angl

e sen- sor

fied mete

Uni-r and A/C amp.

ICC sen- sor

ABS actu- ator and elec- tric unit (con- trol unit)

Driv

er seat con- trol unit

IPD

M E/ R

A/T self-diagnosis signal R T

Stop lamp switch signal R R T

Battery voltage signal T R

Engine speed signal T R R R R R R

Engine status signal T R

Engine coolant temperature

A/T self-diagnosis signal R T

Input shaft revolution signal R T R

Output shaft revolution

A/C compressor request

A/C compressor feedback

Position light request signal R T R R

Front fog light request

Fuel level sensor signal R T

Fuel level low warning

ICC operation signal R T

Front wiper stop position

Theft warning horn request

Steering angle sensor signal T R

Tire pressure data signal R T

VDC OFF indicator lamp

Signals ECM TCM

play con- trol unit

Dis-Low tire pres- sure warn ing con- trol unit

AWD con- trol unit

ICC unit

ligen

Intel-t Key unit BCM

Stee ring angl

e sen- sor

fied mete

Uni-r and A/C amp.

ICC sen- sor

ABS actu- ator and elec- tric unit (con- trol unit)

Driv

er seat con- trol unit

IPD

M E/ R

AWD warning lamp signal T R

AWD lock indicator lamp

Distance to empty signal R T

Hand brake switch signal R R T

Door lock/unlock request

Door lock/unlock status

Starter permission signal T R

Back door open request

Power window open request

Alarm request signal T R

ICC warning lamp signal T R

ICC system display signal T R

Current gear position signal T R R

Steering switch signal T R

ASCD operation signal T R

ASCD OD cancel request T R

ICC OD cancel request R R T

A/T CHECK indicator lamp

Manual mode shift up signal R T

Manual mode shift down

Dis-Low tire pres- sure warn ing con- trol unit

AWD con- trol unit

ICC unit

ligen

Intel-t Key unit BCM

Stee ring angl

e sen- sor

fied mete

Uni-r and A/C amp.

ICC sen- sor

ABS actu- ator and elec- tric unit (con- trol unit)

Driv

er seat con- trol unit

IPD

M E/ R

CAN SYSTEM (TYPE 1)

CAN (Controller Area Network) is a serial communication line for real time application It is an on-vehicle tiplex communication line with high data communication speed and excellent error detection ability Many elec-tronic control units are equipped onto a vehicle, and each control unit shares information and links with othercontrol units during operation (not independent) In CAN communication, control units are connected with 2communication 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

SKIA7126E

TKWH0247E

dis-2 Print all the data of “SELF-DIAG RESULTS” for “ENGINE”, “A/T”, “BCM”, “METER A/C AMP”, “ABS”, and

“IPDM E/R” displayed on CONSULT-II

3 Print all the data of “CAN DIAG SUPPORT MNTR” for “ENGINE”, “A/T”, “BCM”, “METER A/C AMP”,

“ABS”, and “IPDM E/R” displayed on CONSULT-II

4 Attach the printed sheet of “SELECT SYSTEM”, “SELF-DIAG RESULTS” and “CAN DIAG SUPPORTMNTR” onto the check sheet Refer to LAN-25, "CHECK SHEET"

5 Based on the indications of “SELECT SYSTEM” and the results of “CAN DIAG SUPPORT MNTR”, putmarks “v” onto the items with “No indication”, “NG”, or “UNKWN” in the check sheet table Refer to LAN-

7 Attach the CAN DIAG MONITOR check sheet onto the check sheet Refer to LAN-25, "CHECK SHEET"

8 Mark the “NG” or “UNKWN” item of the check sheet table with “v” from the result of CAN DIAG MONITORcheck sheet Refer to LAN-25, "CHECK SHEET"

PKIA2093E

PKIA8260E

PKIA8343E

PKIA7927E

SKIA6560E

Check IPDM E/R ignition relay circuit continuously sticks “ON” Refer to LAN-50, "IPDM E/R Ignition Relay cuit Check"

1 CHECK HARNESS FOR OPEN CIRCUIT

1 Turn ignition switch OFF

2 Disconnect the negative battery terminal

3 Disconnect ECM connector and harness connector M82

4 Check continuity between harness connector M82 terminals

14H (L), 15H (R) and data link connector M5 terminals 6 (L), 14

(R)

OK or NG

OK >> Connect all the connectors and diagnose again Refer to

LAN-23, "Work Flow"

NG >> Repair harness

Circuit Check Between Data Link Connector and Unified Meter and A/C Amp.

AKS007Q6

1 CHECK HARNESS FOR OPEN CIRCUIT

1 Turn ignition switch OFF

2 Disconnect the negative battery terminal

3 Disconnect ECM connector and unified meter and A/C amp connector

4 Check continuity between data link connector M5 terminals 6

(L), 14 (R) and unified meter and A/C amp harness connector

M55 terminals 1 (L), 11 (R)

OK or NG

OK >> Connect all the connectors and diagnose again Refer to

LAN-23, "Work Flow"

NG >> Repair harness

PKIA7941E

14H (L) - 6 (L) : Continuity should exist.

15H (R) - 14 (R) : Continuity should exist.

SKIA6861E

6 (L) - 1 (L) : Continuity should exist.

14 (R) - 11 (R) : Continuity should exist.

SKIA6862E