Infiniti F50. 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.)
EKS005QG
1.
CHECK ON/OFF SWITCH
●
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
●
Check voltage between ICC unit harness connector B245 terminal 49 (B/Y) and terminal 58 (GY/L). Refer
to
ACS-54, "Terminals and Reference Value for ICC Unit"
OK or NG
OK
>> GO TO 9.
NG
>> GO TO 5.
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.
ACS-94
[ICC]
TROUBLE DIAGNOSIS FOR SYMPTOMS
6.
CHECK ICC STEERING SWITCH HARNESS
1.
Turn ignition switch OFF.
2.
Disconnect ICC steering switch harness connector.
3.
Check continuity between spiral cable M441 terminal 17 (G), 18
(Y) and ICC steering switch harness connector M443 terminal 1
(Y), 2 (G).
4.
Check continuity between ICC steering switch harness connec-
tor M443 terminal 1 (Y), 2 (G) 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.
Turn ignition switch OFF.
2.
Disconnect spiral cable connector.
3.
Check continuity between spiral cable (on vehicle) M53 terminal
31 (G), 26 (G/OR) and spiral cable (on switch) M441 terminal 18
(Y), 17 (G) .
4.
Check continuity between spiral cable (on vehicle) M53 terminal
31 (G), 26 (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.
17 - 2, 18 - 1
Continuity should exist.
SKIA1266E
1, 2 - Ground
Continuity should not exist.
SKIA1276E
31 - 17, 26 - 18
Continuity should exist.
PKIA2216E
31, 26 - Ground
Continuity should not exist.
PKIA2217E
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 M53 terminal 31 (G), 26
(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 Erase between spiral cable switch 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).
EKS003Q2
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 shift lever is in gears other than `D'.
●
While the brake is in operation.
31 - 58, 26 - 49
Continuity should exist.
PKIA2218E
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”
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”
ACS-71, "DTC 31 POWER SUPPLY CIR 1, DTC 34
.
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
.
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
.
●
C: Refer to
ACS-74, "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.
EKS003Q3
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
.
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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