Infiniti QX56 (JA60). Manual — part 180

CCS-56

< ECU DIAGNOSIS >

ICC UNIT

Diagnostic Trouble Code (DTC) Chart

INFOID:0000000005146007

×:Applicable

DTC

No.

CONSULT-III screen terms

ICC sys-

tem

warning

lamp

Fail-safe

Malfunctions detected where...

Refer-

ence
page

Vehicle-

to-vehi-

cle dis-

tance

control

mode

Conven-

tional
(fixed

speed)

cruise

control

mode

Brake as-

sist (with

preview

function)

11

CONTROL UNIT

×

×

×

×

• ICC unit internal malfunction

CCS-22

12

VDC CONTROL UNIT

×

×

×

×

• VDC malfunction
• Brake booster signal harness is

open or shorted

CCS-23

20

CAN COMM CIRCUIT

×

×

×

×

• ICC unit detected CAN communi-

cation malfunction

CCS-24

31

POWER SUPPLY CIR1

×

×

×

×

• ICC unit power supply voltage is

excessively low (less than 8V)

CCS-25

34

POWER SUPPLY CIR2

×

×

×

×

• ICC unit power supply voltage is

excessively high.

CCS-25

41

VHCL SPEED SE CIRC

×

×

×

×

• Wheel sensor malfunction
• ABS actuator and electric unit

(control unit) malfunction

• A/T vehicle speed sensor mal-

function

• TCM malfunction

CCS-26

43

VDC/TCS/ABS CIRC

×

×

×

×

• VDC/TCS/ABS system malfunc-

tion

CCS-27

45

BRAKE SW/ STOP L SW

×

×

×

×

• ICC brake switch or stop lamp

switch harness is open or shorted

• ICC brake switch or stop lamp

switch is stuck to OFF

• ICC brake switch or stop lamp

switch is stuck to ON

CCS-28

46

OPERATION SW CIRC

×

×

×

• ICC steering switch harness or

spiral cable is open or shorted

• ICC steering switch malfunction

CCS-30

74

LASER BEAM OFF CNTR

×

×

×

• Laser beam of ICC sensor is off

the aiming point

CCS-32

90

STOP LAMP RLY FIX

×

×

×

• Normally open terminal of stop

lamp relay is stuck

CCS-33

92

ECM CIRCUIT

×

×

×

×

• ECM malfunction
• Accelerator pedal position sensor

malfunction

• ICC unit malfunction

CCS-38

96

NP RANGE

×

×

×

• Transmission range switch har-

ness is open or shorted

• Transmission range switch mal-

function

• TCM malfunction

CCS-39

97 AT

CIRCUIT

×

×

×

• TCM malfunction

CCS-40

98

GEAR POSITION

×

×

×

• TCM malfunction
• A/T input speed sensor malfunc-

tion

• A/T vehicle speed sensor mal-

function

CCS-41

CCS

ICC UNIT

CCS-57

< ECU DIAGNOSIS >

C

D

E

F

G

H

I

J

K

L

M

B

N

P

A

NOTE: DTC 55 will display when no malfunction is detected.

102

LASER STAIN

×

×

×

• ICC sensor body window has

contamination

CCS-42

103

LASER SENSOR FAIL

×

×

×

• ICC sensor internal malfunction

CCS-43

104

LASER AIMING INCMP

×

×

×

• Laser beam aiming of ICC sensor

is not adjusted

CCS-44

107

LASER COMM FAIL

×

×

×

• CAN data received by ICC sensor

is strange (from ICC unit, combi-
nation meter or ECM)

CCS-45

109

LASER HIGH TEMP

×

×

×

• Temperature around ICC sensor

is excessively high

CCS-46

DTC

No.

CONSULT-III screen terms

ICC sys-

tem

warning

lamp

Fail-safe

Malfunctions detected where...

Refer-

ence
page

Vehicle-

to-vehi-

cle dis-

tance

control

mode

Conven-

tional
(fixed

speed)

cruise

control

mode

Brake as-

sist (with

preview

function)

CCS-58

< SYMPTOM DIAGNOSIS >

INTELLIGENT CRUISE CONTROL SYSTEM SYMPTOMS

SYMPTOM DIAGNOSIS

INTELLIGENT CRUISE CONTROL SYSTEM SYMPTOMS

Symptom Chart

INFOID:0000000005146008

Symptoms

Reference page

Operation

ON/OFF switch does not switch ON.

CCS-59

ON/OFF switch does not switch OFF.

CCS-59

Cruise does not function for setting (powering functions).

CCS-60

CANCEL switch does not function.

CCS-61

RESUME does not function.

CCS-61

The set speed does not increase.

CCS-61

The set distance to the vehicle ahead cannot be changed.

CCS-61

The ICC is not cancelled when the gear is in "N".

CCS-62

Display/Chime

The ICC system display does not appear.

Check combination meter. Refer to

MWI-22, "Diagnosis Description"

Chime does not function.

CCS-63

Control

Driving force is hunting.

CCS-64

Function to detect the vehicle ahead

The system frequently cannot detect the vehicle ahead.

CCS-65

The distance to detect the vehicle ahead is short.

CCS-65

The system misidentifies a vehicle even though there is
no vehicle ahead.

• Refer to

CCS-5, "LASER BEAM

AIMING ADJUSTMENT : Out-
line of Laser Beam Aiming Ad-
justment Procedure"

• Refer to

CCS-8, "ACTION TEST

: ICC System Running Test"

The system misidentifies a vehicle in the next lane.

• Refer to

CCS-5, "LASER BEAM

AIMING ADJUSTMENT : Out-
line of Laser Beam Aiming Ad-
justment Procedure"

• Refer to

CCS-8, "ACTION TEST

: ICC System Running Test"

The system does not detect a vehicle at all.

CCS-66

CCS

MAIN SWITCH DOES NOT TURN ON, MAIN SWITCH DOES NOT TURN OFF

CCS-59

< SYMPTOM DIAGNOSIS >

C

D

E

F

G

H

I

J

K

L

M

B

N

P

A

MAIN SWITCH DOES NOT TURN ON, MAIN SWITCH DOES NOT TURN
OFF

Diagnosis Procedure

INFOID:0000000005146009

NOTE:

• *1: The ICC system display in the combination meter does not illuminate.

• *2: The ICC system display in the combination meter remains powered.

1.

CHECK ON/OFF SWITCH

With "DATA MONITOR", check that ON/OFF switch operates normally.
Does ON/OFF switch operate normally?

YES

>> GO TO 2

NO

>> GO TO 3

2.

CHECK ICC UNIT CONNECTOR

1. Turn ignition switch OFF.

2. Disconnect ICC unit harness connectors.

3. Check connector housing for disconnected, loose, bent, and collapsed terminals.
Does the ICC unit pass inspection?

YES

>> GO TO 3

NO

>> • Poor connector connection.

• Repair ICC unit connector. Erase DTC and perform ICC system running test. Refer to

CCS-8,

"ACTION TEST : ICC System Running Test"

.

3.

DIAGNOSIS CHECK

Perform self-diagnosis.
Is "CAN COMM CIRCUIT" indicated?

YES

>> Refer to

CCS-24, "DTC 20 CAN COMM CIRCUIT"

.

NO

>> Refer to

CCS-30, "DTC 46 OPERATION SW CIRC"

.