Infiniti M45 (Y34). Manual - part 25

 

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Infiniti M45 (Y34). Manual - part 25

 

 

TROUBLE DIAGNOSIS FOR SYMPTOMS

ACS-93

[ICC]

C

D

E

F

G

H

I

J

L

M

A

B

ACS

Symptom 1: Cruise ON/OFF Does Not Switch ON. (The ICC System Display in 
the Combination Meter Does Not Illuminate.) Cruise ON/OFF Does Not Switch 
OFF. (The ICC System Display in the Combination Meter Remains Powered.)

AKS002R5

1. 

CHECK ON/OFF SWITCH

With CONSULT-ll

With data monitor, check that ON/OFF switch operates normally.

OK or NG

OK

>> GO TO 2.

NG

>> GO TO 4.

2. 

CHECK COMBINATION METER

Check combination meter.

OK or NG

OK

>> GO TO 5.

NG

>> After repair or replacement, erase DTC, and perform self-diagnosis of ICC system again.

3. 

CHECK CAN COMMUNICATION

Check that CAN communication operates normally.

OK or NG

OK

>> Replace ICC unit. Erase DTC, and perform self-diagnosis of ICC system again.

NG

>> Repair or replace malfunctioning part. Erase DTC, and perform self-diagnosis of ICC system

again.

4. 

CHECK ICC UNIT REFERENCE SIGNAL

1.

Turn ignition switch ON.

2.

Check voltage between ICC unit harness connector B245 termi-
nal 49 (B/Y) and terminal 58 (GY/L).

OK or NG

OK

>> GO TO 9.

NG

>> GO TO 5.

Terminals

Condition

Voltage [V]

(+)

(-)

Connector

Terminal

(Wire color)

Terminal

(Wire color)

B245

49 (B/Y)

58 (GY/L)

ON/OFF switch 
pushed

Approx. 0

CANCEL switch 
pushed

Approx. 1.1

DISTANCE switch 
pushed

Approx. 2.1

COAST/SET 
switch pushed

Approx. 2.9

ACCELERATE/
RESUME switch 
pushed

Approx. 3.6

Except for above

Approx. 4.2

PKIA2581E

ACS-94

[ICC]

TROUBLE DIAGNOSIS FOR SYMPTOMS

5. 

CHECK ICC STEERING SWITCH

Refer to 

ACS-101, "ICC Steering Switch"

 .

OK or NG

NG

>> Replace ICC steering switch. Erase DTC, and perform self-diagnosis of ICC system again.

OK

>> GO TO 6.

6. 

CHECK ICC STEERING SWITCH HARNESS

1.

Turn ignition switch OFF.

2.

Disconnect ICC steering switch connector and spiral cable con-
nector.

3.

Check continuity between spiral cable harness connector M441
terminal 13 (L), 14 (Y) and ICC steering switch harness connec-
tor M443 terminal 1 (L), 2 (Y).

4.

Check continuity between ICC steering switch harness connec-
tor M443 terminal 1 (L), 2 (Y) and ground.

OK or NG

NG

>> Replace switch harness. Erase DTC, and perform self-

diagnosis of ICC system again.

OK

>> GO TO 7.

7. 

CHECK SPIRAL CABLE

1.

Check continuity between spiral cable connector (on vehicle)
M53 terminal 4 (G), 5 (G/OR) and spiral cable connector (on
switch) M441 terminal 13 (L), 14 (Y).

2.

Check continuity between spiral cable connector (on vehicle)
M53 terminal 4 (G), 5 (G/OR) and ground.

OK or NG

NG

>> Replace spiral cable. Erase DTC, and perform self-diag-

nosis of ICC system again.

OK

>> GO TO 8.

13 - 1, 14 - 2

Continuity should exist.

SKIA3073E

1, 2 - Ground

Continuity should not exist.

SKIA3076E

4 - 13, 5 - 14

Continuity should exist.

SKIA1589E

4, 5 - Ground

Continuity should not exist.

SKIA3077E

TROUBLE DIAGNOSIS FOR SYMPTOMS

ACS-95

[ICC]

C

D

E

F

G

H

I

J

L

M

A

B

ACS

8. 

CHECK HARNESS BETWEEN SPIRAL CABLE AND ICC UNIT

1.

Disconnect ICC unit connector.

2.

Check continuity between spiral cable harness connector M53
terminal 4 (G), 5 (G/OR) and ICC unit harness connector B245
terminal 58 (GY/L), 49 (B/Y).

3.

Check continuity between ICC unit harness connector B245 ter-
minal 58 (GY/L), 49 (B/Y) and ground.

OK or NG

NG

>> Repair harness between spiral cable and ICC unit.

Erase DTC, and perform self-diagnosis of ICC system
again.

OK

>> GO TO 10.

9. 

CHECK CONNECTOR FOR ICC UNIT

Check ICC unit (on ICC unit and harness) for disconnected and bent terminals.

OK or NG

OK

>> Replace ICC unit. Erase DTC, and perform self-diagnosis of ICC system again.

NG

>> Repair terminal or connector. Erase DTC, and perform self-diagnosis of ICC system again.

10. 

CHECK CONNECTOR ICC STEERING SWITCH, SWITCH HARNESS AND SPIRAL CABLE

Check ICC steering switch and combination switch terminals (on switch, on cable, on harness) for discon-
nection and bend.

OK or NG

OK

>> GO TO 9.

NG

>> Repair terminal or connector. Erase DTC and perform self-diagnosis of ICC system again.

Symptom 2: The ICC System Cannot Be Set (ON/OFF Switch Turns On/Off).

AKS002R6

The ICC cannot be set in the following cases.

When the vehicle speed is not in range of approx. 25 MPH (40 km/h) to 90 MPH (144 km/h).

When the A/T selector lever is in gears other than `D'.

While the brake is in operation.

4 - 58, 5 - 49

: Continuity should exist.

SKIA3072E

58, 49 - Ground

: Continuity should not 
exist.

SKIA1280E

ACS-96

[ICC]

TROUBLE DIAGNOSIS FOR SYMPTOMS

1. 

CHECK OF CAUSE OF AUTOMATIC CANCELLATION

 With CONSULT-II

1.

With “CAUSE OF AUTO-CANCEL” in work support, check if any cause of cancellation exists.

OK or NG

OK

>>

Cancel with appropriate cause.

For causes A, B, or C, go to specified diagnosis.
A:“OPE SW VOLT CIRC” 

: Refer to 

ACS-75, "DTC 46 OPERATION SW CIRC"

 .

B:“ VHCL SPD UNMATCH”

: Refer to 

ACS-71, "DTC 41 VHCL SPEED SE CIRC"

 .

C:“IGN LOW VOLT” 

: Refer to 

ACS-70, "DTC 31 POWER SUPPLY CIR, DTC 34

POWER SUPPLY CIR 2"

 .

NG

>> GO TO 2.

2. 

SELF-DIAGNOSIS CHECK

 With CONSULT-II

1.

Perform CONSULT-II self-diagnosis to check for malfunctioning items.

OK or NG

OK

>> After repairing or replacing malfunctioning part, erase DTC. Perform ICC system running test, and

then perform self-diagnosis of ICC system again.

NG

>> GO TO 3.

3. 

SWITCHES AND VEHICLE SPEED SIGNAL CHECK

 With CONSULT-II

1.

With data monitor, check that switches and vehicle speed signal operate normally. Refer to 

ACS-60,

"DATA MONITOR"

 .

A: VHCL SPEED SE

B: D RANGE SW

C: BRAKE SW 

D: SET/COAST SW

OK or NG

OK

>> After replacing ICC unit, erase DTC. Perform ICC system running test, and then perform self-diag-

nosis of ICC system again.

NG

>>

A: Refer to 

ACS-71, "DTC 41 VHCL SPEED SE CIRC"

 .

B: Refer to 

ACS-97, "Symptom 4: The ICC System Is Not Cancelled When the Gear Is in Other

Than `D'."

 .

C: Refer to 

ACS-73, "DTC 45 BRAKE SW/STOP L SW"

 .

D: Refer to 

ACS-75, "DTC 46 OPERATION SW CIRC"

 .

Symptom 3: The ICC System Cannot Be Cancelled by the CANCEL Switch, 
RESUME or Increase the Set Vehicle Speed, or Change the Distance Setting.

AKS002R7

RESUME does not function in the following cases:

When ON/OFF switch is turned off once.

When the vehicle speed is less than 25 MPH (40 km/h).

1. 

SWITCH CHECK

 With CONSULT-II

1.

With data monitor, check that switches operate normally.
“RESUME/ACC SW”, “CANCEL SW”, “DISTANCE ADJ”.Refer to 

ACS-60, "DATA MONITOR"

 .

OK or NG

NG

>>

ACS-75, "DTC 46 OPERATION SW CIRC"

.

OK

>> After replacing ICC unit, erase DTC. Perform driving check, and then perform self-diagnosis of

ICC system again.

 

 

 

 

 

 

 

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