Infiniti QX56 (JA60). Manual — part 174
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CCS-32
< COMPONENT DIAGNOSIS >
DTC 74 LASER BEAM OFF CNTR
DTC 74 LASER BEAM OFF CNTR
DTC 74 LASER BEAM OFF CNTR
INFOID:0000000005145993
1.
DIAGNOSTIC CHECK
1. Adjust laser beam aiming. Refer to
CCS-5, "LASER BEAM AIMING ADJUSTMENT : Outline of Laser
Beam Aiming Adjustment Procedure"
. Erase DTC and perform ICC system running test. Refer to
"ACTION TEST : ICC System Running Test"
2. Perform self-diagnosis of ICC system.
Is DTC 74 LASER BEAM OFF CNTR incidated?
YES
>> • Replace ICC sensor and adjust laser beam aiming. Refer to
• Erase DTC and perform ICC system running test. Refer to
CCS-8, "ACTION TEST : ICC Sys-
NO
>> Inspection end.
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CCS
DTC 90 STOP LAMP RLY FIX
CCS-33
< COMPONENT DIAGNOSIS >
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DTC 90 STOP LAMP RLY FIX
DTC 90 STOP LAMP RLY FIX
INFOID:0000000005145994
Regarding Wiring Diagram information, refer to
1.
CHECK ICC UNIT CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect and check ICC unit connector.
Does connector check OK?
YES
>> GO TO 2
NO
>> • Connector malfunction.
• Erase DTC and perform ICC system running test. Refer to
CCS-8, "ACTION TEST : ICC Sys-
2.
CHECK STOP LAMP SWITCH AND ICC BRAKE SWITCH
1. Connect ICC unit connector and turn ignition switch ON.
2. With data monitor, check that “STOP LAMP SW” and “BRAKE SW” operate normally.
Do the monitor items display normally?
YES
>> GO TO 11
NO
>> • BRAKE SW: GO TO 3
• STOP LAMP SW: GO TO 8
3.
CHECK AND ADJUST ICC BRAKE SWITCH
Check ICC brake switch for proper installation and adjust if necessary.
Does the ICC brake switch pass inspection?
YES
>> GO TO 4
NO
>> After adjustment, erase DTC and perform ICC system running test. Refer to
TEST : ICC System Running Test"
4.
CHECK ICC BRAKE SWITCH
Check ICC brake switch. Refer to
CCS-28, "DTC 45 BRAKE SW/STOP L SW"
.
Is the ICC brake switch operating normally?
YES
>> GO TO 5
NO
>> Replace ICC brake switch. Erase DTC and perform ICC system running test. Refer to
"ACTION TEST : ICC System Running Test"
.
5.
CHECK ICC BRAKE HOLD RELAY
Disconnect ICC brake hold relay and check continuity between ICC
brake hold relay terminal 4 and terminal 3.
Does continuity exist?
YES
>> GO TO 6
NO
>> Replace ICC brake hold relay. Erase DTC and perform
ICC system running test. Refer to
TEST : ICC System Running Test"
6.
CHECK HARNESS THROUGH ICC BRAKE HOLD RELAY, ICC BRAKE SWITCH, ICC UNIT
1. Disconnect ECM and ICC unit harness connectors.
Continuity should exist.
SKIA6658E
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CCS-34
< COMPONENT DIAGNOSIS >
DTC 90 STOP LAMP RLY FIX
2. Check continuity between ICC brake hold relay harness connec-
tor (B) E134 terminal 3 and ICC unit harness connector (A) B17
terminal 29.
3. Check continuity between ICC unit harness connector (A) B17
terminal 29 and ground.
Are continuity test results as specified?
YES
>> GO TO 7
NO
>> • Repair harness between ICC brake hold relay and ICC brake switch.
• Repair harness between ICC brake switch and ICC unit.
• Erase DTC and perform ICC system running test. Refer to
CCS-8, "ACTION TEST : ICC Sys-
7.
CHECK ICC BRAKE HOLD RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch ON.
2. Check voltage between ICC brake hold relay harness connector
E134 terminal 4 and ground.
Does battery voltage exist?
YES
DTC and perform ICC system running test. Refer to
CCS-8, "ACTION TEST : ICC System Running Test"
NO
>> • Check fuse or ICC brake hold relay power supply sys-
tem harness.
• Erase DTC and perform ICC system running test. Refer to
CCS-8, "ACTION TEST : ICC Sys-
8.
CHECK STOP LAMP SWITCH
1. Turn ignition switch OFF.
2. Check stop lamp switch.
Does stop lamp switch operate normally?
YES
>> GO TO 9
NO
>> Replace stop lamp switch. Erase DTC and perform ICC system running test. Refer to
"ACTION TEST : ICC System Running Test"
.
9.
CHECK ICC BRAKE HOLD RELAY CIRCUIT
1. Disconnect stop lamp switch connector.
2. When brake pedal is not depressed, make sure that stop lamp does not illuminate.
Does the ICC brake hold relay check OK?
YES
>> Replace ICC unit. Refer to
. Erase DTC and perform ICC system running test.
CCS-8, "ACTION TEST : ICC System Running Test"
.
NO
>> GO TO 10
10.
CHECK ICC BRAKE HOLD RELAY
Continuity should exist.
Continuity should not exist.
ALOIA0008ZZ
Battery voltage should exist
ALOIA0009ZZ
![](/vehicles/zatt/vend/genn/quyoodoau.png)
CCS
DTC 90 STOP LAMP RLY FIX
CCS-35
< COMPONENT DIAGNOSIS >
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1. Disconnect ICC brake hold relay.
2. Check continuity between ICC brake hold relay E134 terminal 7
and terminal 6.
Are continuity test results as specified?
YES
>> Replace ICC unit. Refer to
. Erase
DTC and perform ICC system running test. Refer to
CCS-8, "ACTION TEST : ICC System Running Test"
NO
>> Replace ICC brake hold relay. Erase DTC and perform
ICC system running test. Refer to
TEST : ICC System Running Test"
11.
CHECK HARNESS THROUGH ICC UNIT, ICC BRAKE HOLD RELAY, AND GROUND
1. Disconnect ICC unit and ICC brake hold relay harness connec-
tors.
2. Check continuity between ICC unit harness connector B17 ter-
minal 47 and ICC brake hold relay harness connector E134 ter-
minal 1.
3. Check continuity between ICC unit harness connector B17 ter-
minal 47 and ground.
4. Check continuity between ICC brake hold relay harness connec-
tor E134 terminal 2 and ground.
Are continuity test results as specified?
YES
>> GO TO 12
NO
>> • Repair harness through ICC unit and ICC brake hold
relay, or between ICC brake hold relay and ground.
• Erase DTC and perform ICC system running test.
CCS-8, "ACTION TEST : ICC System Run-
.
12.
CHECK ICC BRAKE HOLD RELAY
Check continuity between ICC brake hold relay terminal 1 and termi-
nal 2.
Does continuity exist?
YES
>> GO TO 13
NO
>> Replace ICC brake hold relay. Erase DTC and perform
ICC system running test. Refer to
TEST : ICC System Running Test"
13.
CHECK ICC UNIT STANDARD VOLTAGE
Continuity should not exist.
SKIA6659E
47 - 1
Continuity should exist.
47 - Ground
Continuity should not exist.
SKIA6660E
Continuity should exist.
SKIA6661E
Continuity should exist
(minimal resistance through coil will exist)
SKIA6662E
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