Infiniti Q45. Manual — part 12
TROUBLE DIAGNOSIS - GENERAL DESCRIPTION
ACS-41
[ICC]
C
D
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ACS
3.
CHECK HARNESS BETWEEN ECM AND ICC STEERING SWITCH
1.
Turn ignition switch OFF.
2.
Disconnect ECM connector, and check terminals for bend and
looseness.
3.
Check continuity between ECM harness connector terminals.
4.
Check continuity between ECM harness connector and ground.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 4.
4.
CHECK ICC STEERING SWITCH
Check ICC steering switch. Refer to
OK or NG
OK
>> 1. Repair or replace harness between ECM and ICC steering switch.
2. Perform self-diagnosis mode for ICC system.
NG
>> 1. Replace ICC steering switch.
2. Perform self-diagnosis mode for ICC system.
5.
CHECK SELF-DIAGNOSIS
1.
Connect ECM connector.
2.
Turn ignition switch ON.
3.
Perform self-diagnosis mode for ICC system.
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 6.
6.
CHECK CONNECTOR FOR ICC UNIT
1.
Turn ignition switch OFF.
2.
Disconnect ICC unit connector, and check terminals for bend and looseness.
3.
Connect ICC unit connector.
4.
Turn ignition switch ON.
5.
Check if all displays illuminate.
Do all displays illuminate?
YES
>> Perform self-diagnosis again.
NO
>> GO TO 7.
ECM connector
Terminal
Condition
Resistance
(Approx.)
F101
67
99
When MAIN switch pressed
0
Ω
When MAIN switch released
5.5 k
Ω
PKIB8377E
ECM connector
Terminal
Ground
Continuity
F101
67
No
99
PKIB8378E
ACS-42
[ICC]
TROUBLE DIAGNOSIS - GENERAL DESCRIPTION
7.
CHECK POWER SUPPLY CIRCUIT FOR ICC UNIT
Check voltage between ICC unit harness connector and ground.
OK or NG
OK
>> GO TO 8.
NG
>> Repair ICC unit power supply harness.
8.
CHECK GROUND CIRCUIT FOR ICC UNIT
1.
Turn ignition switch OFF.
2.
Disconnect ICC unit connector.
3.
Check continuity between ICC unit harness connector and
ground.
OK or NG
OK
>> GO TO 9.
NG
>> Repair ICC unit ground harness.
9.
CHECK DISPLAYS
1.
Connect ICC unit connector.
2.
Turn ignition switch ON.
3.
Check if all displays illuminate.
Do all displays illuminate?
YES
>> Perform self-diagnosis again.
NO
>> GO TO 10.
10.
CHECK CAN COMMUNICATION
Perform self-diagnosis with CONSULT-II, and check CAN communication system for malfunction.
OK or NG
OK
>> Replace combination meter.
NG
>> CAN communication inspection. Refer to
ACS-45, "DTC 20 CAN COMM CIRCUIT"
.
Terminals
Voltage (Approx.)
(+)
(
−
)
ICC unit connector
Terminal
B244
33
Ground
Battery voltage
42
SKIA1173E
ICC unit connector
Terminal
Ground
Continuity
B243
19
Yes
20
B244
46
SKIA6650E
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-43
[ICC]
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ACS
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
PFP:00000
Diagnostic Trouble Code (DTC) Chart
NKS001KE
×
: Applicable
DTC
No.
CONSULT-II
screen terms
ICC
system
warning
lamp
Fail-safe
Malfunctions detected where...
Refer-
ence
page
Vehicle-
to-
vehicle
distance
control
mode
Conven-
tional
(fixed
speed)
cruise
control
mode
Brake
assist
(with
preview
function)
11
CONTROL UNIT
×
×
×
×
●
ICC unit internal malfunction.
20
CAN COMM CIRCUIT
×
×
×
×
●
ICC unit detected CAN communi-
cation malfunction.
31
POWER SUPPLY CIR
×
×
×
×
●
ICC unit power supply voltage is
excessively low (less than 8 V).
34
POWER SUPPLY CIR2
×
×
×
×
●
ICC unit power supply voltage is
excessively high (more than 19 V).
41
VHCL SPEED SE CIRC
×
×
×
×
●
Wheel sensor malfunction.
●
VDC/TCS/ABS control unit mal-
function.
●
AT vehicle speed sensor malfunc-
tion.
●
TCM malfunction.
43
ABS/TCS/VDC CIRC
×
×
×
×
●
VDC/TCS/ABS system malfunc-
tion.
45
BRAKE SW/STOP L SW
×
×
×
×
●
Brake and stop lamp switch har-
ness is open or shorted.
●
Brake and stop lamp switch is ON
or stuck to OFF.
●
Brake and stop lamp switch is
stuck to ON.
46
OPERATION SW CIRC
×
×
×
●
ICC steering switch harness or
spiral cable is open or shorted.
●
ICC steering switch malfunction.
55
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.
●
No malfunction item has been
detected.
—
61
PRESS SEN CIRCUIT
×
×
×
●
Brake pressure sensor harness is
open or shorted.
●
Brake pressure sensor malfunc-
tion.
●
Brake pressure sensor input circuit
malfunction.
62
BOOSTER SOL/V CIRCUIT
×
×
×
●
Solenoid harness is open or
shorted.
●
Solenoid is open.
●
Solenoid drive circuit malfunction.
63
RELEASE SW CIRCUIT
×
×
×
×
●
Release switch harness is open or
shorted.
●
Release switch malfunction.
●
Release switch input circuit mal-
function.
65
PRESSURE CONTROL
×
×
×
●
Booster malfunction.
ACS-44
[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
DTC 11 CONTROL UNIT
NKS001KF
1.
PERFORM ICC UNIT SELF-DIAGNOSIS
1.
Perform self-diagnosis.
2.
Check if any item other than “DTC 11 CONTROL UNIT” is indicated on self-diagnosis display.
Is any indicated?
YES
>> 1. Repair or replace applicable item.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
NO
>> 1. Replace ICC unit.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
74
LASER BEAM OFF CNTR
×
×
×
●
Laser beam of ICC sensor is off
the aiming point.
90
STOP LAMP RLY FIX
×
×
×
●
Normally open terminal of stop
lamp relay is stuck.
92
ECM CIRCUIT
×
×
×
×
●
ECM malfunction.
●
Accelerator pedal position sensor
malfunction.
●
ICC unit malfunction.
96
NP RANGE
×
×
×
●
Park/neutral position switch har-
ness is open or shorted.
●
Park/neutral position switch mal-
function.
●
TCM malfunction.
97 AT
CIRCUIT
×
×
×
●
TCM malfunction.
98
GEAR POSITION
×
×
×
●
TCM malfunction.
●
AT turbine revolution sensor mal-
function.
●
AT vehicle speed sensor malfunc-
tion.
102
RADAR STAIN
×
×
×
●
ICC sensor body window has con-
tamination.
103
LASER SENSOR FAIL
×
×
×
●
ICC sensor internal malfunction.
104
LASER AIMING INCMP
×
×
×
●
Laser beam aiming of ICC sensor
is not adjusted.
107
LASER COMM FAIL
×
×
×
●
CAN data received by ICC sensor
is strange (from ICC unit, combi-
nation meter or ECM).
109
LASER HIGH TEMP
×
×
×
●
Temperature around ICC sensor is
excessively high.
DTC
No.
CONSULT-II
screen terms
ICC
system
warning
lamp
Fail-safe
Malfunctions detected where...
Refer-
ence
page
Vehicle-
to-
vehicle
distance
control
mode
Conven-
tional
(fixed
speed)
cruise
control
mode
Brake
assist
(with
preview
function)
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