Infiniti EX35. Manual — part 385

CCS

U1000 CAN COMM CIRCUIT

CCS-75

< COMPONENT DIAGNOSIS >

[INTELLIGENT CRUISE CONTROL]

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U1000 CAN COMM CIRCUIT

Description

INFOID:0000000003130106

• CAN communication is a multiplex communication system. This enables it to transmit and receive many

communication signals at high speed by connecting control units with two communication lines (CAN-H and
CAN-L).

• Control units on the CAN network transmit signals with CAN communication control circuit in the control unit

and receive only necessary signals from other control units for various controls. Refer to

LAN-27, "CAN

Communication Signal Chart"

.

• CAN communication lines adopt twisted-pair line style (two lines twisted) for noise immunity.

DTC Logic

INFOID:0000000003130107

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000003130108

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

>> Go to “LAN system”. Refer to

LAN-18, "Trouble Diagnosis Flow Chart"

.

NO

>> Refer to

GI-38, "Intermittent Incident"

.

DTC No.

(On board

display)

Trouble diagnosis name

DTC detecting condition

Possible cause

U1000

(100)

CAN COMM CIRCUIT

When ICC sensor integrated unit is not transmit-
ting or receiving CAN communication signal for 2
seconds or more.

CAN communication

CCS-76

< COMPONENT DIAGNOSIS >

[INTELLIGENT CRUISE CONTROL]

U1010 CONTROL UNIT (CAN)

U1010 CONTROL UNIT (CAN)

Description

INFOID:0000000003130109

Initial diagnosis for ICC sensor integrated unit.

DTC Logic

INFOID:0000000003130110

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000003130111

1.

PERFORM SELF-DIAGNOSIS OF ICC SENSOR INTEGRATED UNIT

1.

Perform self-diagnosis of ICC sensor integrated unit.

2.

Print self-diagnosis result.

3.

Erase DTC.

4.

Perform self-diagnosis of ICC sensor integrated unit again.

5.

Check if DTC “U1010: CONTROL UNIT (CAN)” (DTC110) is detected.

Is any DTC detected?

YES

>> GO TO 2.

NO

>> INSPECTION END

2.

REPLACE ICC SENSOR INTEGRATED UNIT

1.

Replace ICC sensor integrated unit.

2.

Adjust laser beam aiming. Refer to

CCS-8, "LASER BEAM AIMING ADJUSTMENT : Special Repair

Requirement (Preparation)"

.

>> GO TO 3.

3.

CHECK ICC SYSTEM

1.

Erase DTC and perform ICC system action test. Then perform self-diagnosis of ICC sensor integrated
unit. (For the details on the ICC system action test, refer to

CCS-13, "ACTION TEST : Special Repair

Requirement (Vehicle-To-Vehicle Distance Control Mode)"

).

2.

Check that no abnormal condition is present in the ICC system.

>> INSPECTION END

DTC No.

(On board

display)

Trouble diagnosis name

DTC detecting condition

Possible cause

U1010

(110)

CONTROL UNIT (CAN)

ICC sensor integrated unit detects malfunction by
CAN initial diagnosis.

ICC sensor integrated unit

CCS

POWER SUPPLY AND GROUND CIRCUIT

CCS-77

< COMPONENT DIAGNOSIS >

[INTELLIGENT CRUISE CONTROL]

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POWER SUPPLY AND GROUND CIRCUIT

Diagnosis Procedure

INFOID:0000000003130112

1.

CHECK FUSE

Check for blown fuses.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Be sure to eliminate cause of malfunction before installing new fuse.

2.

CHECK POWER SUPPLY CIRCUIT FOR ICC SENSOR INTEGRATED UNIT

1.

Turn ignition switch OFF.

2.

Disconnect ICC sensor integrated unit connector.

3.

Turn ignition switch ON.

4.

Check voltage between ICC sensor integrated unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace ICC sensor integrated unit power supply harness or fuse.

3.

CHECK GROUND CIRCUIT FOR ICC SENSOR INTEGRATED UNIT

1.

Turn ignition switch OFF.

2.

Check continuity between ICC sensor integrated unit harness connector and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair or replace ICC sensor integrated unit ground harness.

Power source

Fuse No.

Ignition switch ON or START

45

Terminals

Voltage

(Approx.)

(+)

(–)

ICC sensor integrated
unit connector

Terminal

E67

1 Ground

Battery

voltage

ICC sensor integrated
unit connector

Terminal

Ground

Continuity

E67

4 Existed

CCS-78

< ECU DIAGNOSIS >

[INTELLIGENT CRUISE CONTROL]

ICC SENSOR INTEGRATED UNIT

ECU DIAGNOSIS

ICC SENSOR INTEGRATED UNIT

Reference Value

INFOID:0000000003130117

VALUES ON THE DIAGNOSIS TOOL

CONSULT-III MONITOR ITEM

Monitor Item

Condition

Value/Status

MAIN SW

Ignition switch ON

When MAIN switch is pressed

On

When MAIN switch is not pressed

Off

SET/COAST SW

Ignition switch ON

When SET/COAST switch is pressed

On

When SET/COAST switch is not pressed

Off

CANCEL SW

Ignition switch ON

When CANCEL switch is pressed

On

When CANCEL switch is not pressed

Off

RESUME/ACC SW

Ignition switch ON

When RESUME/ACCELERATE switch is pressed

On

When RESUME/ACCELERATE switch is not pressed

Off

DISTANCE SW

Ignition switch ON

When DISTANCE switch is pressed

On

When DISTANCE switch is not pressed

Off

CRUISE OPE

Drive the vehicle and activate the
ICC system

ICC system control active

On

ICC system control inactive

Off

BRAKE SW

Ignition switch ON

Brake pedal depressed

Off

Brake pedal not depressed

On

STOP LAMP SW

Ignition switch ON

Brake pedal depressed

On

Brake pedal not depressed

Off

IDLE SW

Engine running

Idling

On

Except idling (depress acceleration pedal)

Off

SET DISTANCE

• Start the engine and activate

the vehicle-to-vehicle distance
control mode

• Press the DISTANCE switch to

change the vehicle-to-vehicle
distance setting

When set to “LONG”

Long

When set to “MIDDLE”

Mid

When set to “SHORT”

Short

CRUISE LAMP

Start the engine and press the
MAIN switch

ICC system ON (MAIN switch indicator turned on)

On

ICC system OFF (MAIN switch indicator turned off)

Off

OWN VHCL

Start the engine and press the
MAIN switch

ICC system ON (Own vehicle detection indicator
turned on)

On

ICC system OFF (Own vehicle detection indicator
turned off)

Off

VHCL AHEAD

• Start the engine and press the

MAIN switch

• Drive the vehicle in the vehi-

cle-to-vehicle distance control
mode

Vehicle ahead detected (Vehicle ahead indicator
turned on)

On

Vehicle ahead not detected (Vehicle ahead indicator
turned off)

Off

ICC WARNING

Engine running

ICC system malfunctioning (ICC system warning lamp
turned on)

On

ICC system operating normally (ICC system warning
lamp turned off)

Off

VHCL SPEED SE

While driving

Value of vehicle
speed signal
(wheel speed)