Infiniti FX35 / FX45. Manual — part 13
ACS-46
< SERVICE INFORMATION >
[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
2.
Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
NO
>> INSPECTION END
DTC 90 STOP LAMP RLY FIX
INFOID:0000000001328838
1.
CHECK CONNECTOR ICC UNIT
1.
Turn ignition switch OFF.
2.
Disconnect ICC unit connector, and connect it securely again.
3.
Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
Is malfunction indicated?
YES
>> GO TO 2.
NO
>>
Poor connector connection
1.
Check connector (Check connector housing for disconnected, loose, bent, and collapsed ter-
minals. If any malfunction is detected, repair applicable part).
2.
Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
2.
CHECK STOP LAMP SWITCH AND ICC BRAKE SWITCH
With “Data Monitor” of “ICC”, check that “STOP LAMP SW” and “BRAKE SW” operate normally.
OK or NG
OK
>> GO TO 12.
NG-1
>> “BRAKE SW” NG: GO TO 3.
NG-2
>> “STOP LAMP SW” NG: GO TO 9.
3.
CHECK BRAKE SWITCH INSTALLATION AND ADJUSTMENT
Check brake switch for proper installation, and adjust the switch if necessary. Refer to
.
OK or NG
OK
>> GO TO 4.
NG
>> After adjustment, erase DTC and perform ICC system running test. Then perform self-diagnosis
of ICC system again.
4.
CHECK ICC BRAKE SWITCH AND STOP LAMP SWITCH
Check ICC brake switch and stop lamp switch. Refer to
ACS-64, "ICC Brake Switch and Stop Lamp Switch"
.
OK or NG
OK
>> GO TO 5.
NG
>> 1.
Replace ICC brake switch.
2.
Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
5.
CHECK ICC BRAKE HOLD RELAY
1.
Turn ignition switch OFF.
2.
Disconnect ICC brake hold relay.
3.
Check ICC brake hold relay. Refer to
ACS-64, "ICC Brake Hold Relay"
.
OK or NG
OK
>> GO TO 6.
NG
>> 1.
Replace ICC brake hold relay.
2.
Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
6.
CHECK HARNESS BETWEEN ICC BRAKE HOLD RELAY AND ICC BRAKE SWITCH
1.
Disconnect ICC brake switch connector and ICC unit connector.
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-47
< SERVICE INFORMATION >
[ICC]
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2.
Check continuity between ICC brake hold relay harness connec-
tor and ICC brake switch harness connector.
3.
Check continuity between ICC brake hold relay harness connec-
tor and ground.
OK or NG
OK
>> GO TO 7.
NG
>> 1.
Repair harness between ICC brake hold relay and ICC brake switch.
2.
Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
7.
CHECK HARNESS BETWEEN ICC UNIT AND ICC BRAKE HOLD RELAY
1.
Disconnect ECM connector.
2.
Check continuity between ICC unit harness connector and ICC
brake hold relay harness connector.
3.
Check continuity between ICC unit harness connector and
ground.
OK or NG
OK
>> GO TO 8.
NG
>> 1.
Repair harness between ICC unit and ICC brake hold relay.
2.
Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
8.
CHECK ICC BRAKE SWITCH POWER SUPPLY CIRCUIT
1.
Turn ignition switch ON.
2.
Check voltage between ICC brake switch harness connector
and ground.
OK or NG
OK
>> 1.
Replace ICC unit.
2.
Erase DTC and perform ICC system running test.
Then perform self-diagnosis of ICC system again.
NG
>> 1.
Repair or replace harness or fuse.
2.
Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
9.
CHECK STOP LAMP ILLUMINATION
ICC brake hold
relay connector
Terminal
ICC brake switch
connector
Terminal
Continuity
E14
3
E209
2
Yes
ICC brake hold
relay connector
Terminal
Ground
Continuity
E14
3
No
PKIB4167E
ICC unit connector
Terminal
ICC brake hold relay
connector
Terminal
Continuity
M89
29
E14
4
Yes
ICC unit connector
Terminal
Ground
Continuity
M89
29
No
SKIA5980E
ICC brake switch
connector
Terminal
Voltage (Approx.)
(+)
(
−
)
E209
1
Ground
Battery voltage
PKIB4168E
ACS-48
< SERVICE INFORMATION >
[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
1.
Turn ignition switch OFF.
2.
Disconnect ICC brake hold relay.
3.
Check stop lamp circuit.
OK or NG
OK
>> GO TO 10.
NG
>> After repairing, erase DTC and perform ICC system running test. Then perform self-diagnosis of
ICC system again.
10.
CHECK ICC BRAKE HOLD RELAY CIRCUIT
1.
Connect ICC brake hold relay connector.
2.
Disconnect stop lamp switch connector.
3.
When brake pedal is not depressed, make sure that stop lamp does not illuminate.
OK or NG
OK
>> 1.
Replace ICC unit.
2.
Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
NG
>> GO TO 11.
11.
CHECK ICC BRAKE HOLD RELAY
1.
Disconnect ICC brake hold relay.
2.
Check ICC brake hold relay. Refer to
ACS-64, "ICC Brake Hold Relay"
.
OK or NG
OK
>> 1.
Replace ICC unit.
2.
Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
NG
>> 1.
Replace ICC brake hold relay.
2.
Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
12.
CHECK HARNESS BETWEEN ICC UNIT AND ICC BRAKE HOLD RELAY
1.
Turn ignition switch OFF.
2.
Disconnect ICC unit connector and ICC brake hold relay.
3.
Check continuity between ICC unit harness connector and ICC
brake hold relay harness connector.
4.
Check continuity between ICC unit harness connector and
ground.
OK or NG
OK
>> GO TO 13.
NG
>> 1.
Repair harness between ICC unit and ICC brake hold relay.
2.
Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
13.
CHECK ICC BRAKE HOLD RELAY GROUND CIRCUIT
ICC unit connector
Terminal
ICC brake hold relay
connector
Terminal
Continuity
M89
47
E14
1
Yes
ICC unit connector
Terminal
Ground
Continuity
M89
47
No
SKIA6660E
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-49
< SERVICE INFORMATION >
[ICC]
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F
G
H
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Check continuity between ICC brake hold relay harness connector
and ground.
OK or NG
OK
>> GO TO 14.
NG
>> 1.
Repair harness between ICC brake hold relay and
ground.
2.
Erase DTC and perform ICC system running test.
Then perform self-diagnosis of ICC system again.
14.
CHECK ICC BRAKE HOLD RELAY
Check ICC brake hold relay. Refer to
ACS-64, "ICC Brake Hold Relay"
.
OK or NG
OK
>> GO TO 15.
NG
>> 1.
Replace ICC brake hold relay.
2.
Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
15.
CHECK ICC UNIT STANDARD VOLTAGE
1.
Connect ICC unit connector and stop lamp switch connector.
2.
Perform “Active Test” (“STOP LAMP”: “STP LMP DRIVE ON”)
with CONSULT-III, check voltage between ICC unit harness
connector and ground.
OK or NG
OK
>> GO TO 16.
NG
>> 1.
Replace ICC unit.
2.
Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
16.
CHECK ICC BRAKE HOLD RELAY POWER SUPPLY CIRCUIT
Check voltage between ICC brake hold relay harness connector and
ground.
OK or NG
OK
>> GO TO 17.
NG
>> 1.
Repair or replace harness or fuse.
2.
Erase DTC and perform ICC system running test.
Then perform self-diagnosis of ICC system again.
17.
CHECK HARNESS BETWEEN ICC UNIT AND ICC BRAKE HOLD RELAY
1.
Turn ignition switch OFF.
ICC brake hold re-
lay connector
Terminal
Ground
Continuity
E14
2
Yes
SKIA6661E
ICC unit
connector
Terminal
Condition
Voltage (Ap-
prox.)
(+)
(
−
)
M89
47
Ground
During “Active Test”
12 V
SKIA3075E
ICC brake hold relay con-
nector
Terminal
Voltage (Ap-
prox.)
(+)
(
−
)
E14
6
Ground
Battery voltage
SKIA1198E
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