2009 INFINITI QX56 200

CCS
DTC 90 STOP LAMP RLY FIXCCS-33
< COMPONENT DIAGNOSIS >
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2. Check continuity between ICC brake hold relay harness connec- tor (B) E134 terminal 3 and IC C 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-
tem Running Test".
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 >> Replace ICC unit. Refer to CCS-70, "ICC Unit". Erase
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-
tem Running Test".
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 CCS-8,
"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 CCS-70, "ICC Unit". Erase DTC and perform ICC system running test.
Refer to 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
Revision: December 20092009 QX56

CCS-34
< COMPONENT DIAGNOSIS >
DTC 90 STOP LAMP RLY FIX
1. Disconnect ICC brake hold relay.
2. Check continuity between ICC brake hold relay E134 terminal 7and terminal 6.
Are continuity test results as specified?
YES >> Replace ICC unit. Refer to CCS-70, "ICC Unit". 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 CCS-8, "
ACTION
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 I CC unit harness connector B17 ter-
minal 47 and ICC brake hold relay harness connector E134 ter-
minal 1.
3. Check continuity between I CC 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.
Refer to CCS-8, "
ACTION TEST : ICC System Run-
ning Test".
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 CCS-8, "
ACTION
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
Revision: December 20092009 QX56

CCS
DTC 90 STOP LAMP RLY FIXCCS-35
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1. Connect connectors of ICC unit and stop lamp switch.
2. While performing active test (STOP LAMP: STP LMP DRIVE ON) with CONSULT-III, check voltage between ICC unit harness
connector B17 terminal 47 and ground.
Does battery voltage exist?
YES >> GO TO 14
NO >> Replace ICC unit. Refer to CCS-70, "
ICC Unit". Erase
DTC and perform ICC system running test. Refer to
CCS-8, "
ACTION TEST : ICC System Running Test".
14.CHECK ICC BRAKE HOLD RELAY POWER SUPPLY CIRCUIT
Check voltage between ICC brake hold relay harness connector
E134 terminal 7 and ground.
Does battery voltage exist?
YES >> GO TO 15
NO >> • Check fuse or ICC brake hold relay power supply har- ness.
• Erase DTC and perform ICC system running test. Refer to CCS-8, "
ACTION TEST : ICC System Run-
ning Test".
15.CHECK HARNESS BETWEEN ICC BRAKE HOLD RELAY AND ICC UNIT
1. Turn ignition switch OFF.
2. Disconnect ICC unit harness connectors.
3. Check continuity between ICC brake hold relay harness connec- tor (B) E134 terminal 6 and IC C unit harness connector (A) B17
terminal 38.
4. Check continuity between ICC unit harness connector (A) B17 terminal 38 and ground.
Are continuity test results as specified?
YES >> GO TO 16
NO >> • Repair harness between ICC brake hold relay and ICC unit or between ICC brake hold relay and stop lamp switch.
• Erase DTC and perform ICC system running test. Refer to CCS-8, "
ACTION TEST : ICC Sys-
tem Running Test".
16.CHECK ICC BRAKE HOLD RELAY
1. Connect ICC unit and ICC brake hold relay harness connectors.
2. Disconnect stop lamp switch connector.
3. Perform active test (STOP LAMP) with CONSULT-III, and make sure that stop lamps are illuminated.
Do the stop lamps illuminate?
YES >> GO TO 17
NO >> Replace ICC brake hold relay. Erase DTC and perform ICC system running test. Refer to CCS-8,
"ACTION TEST : ICC System Running Test".
17.CHECK ICC UNIT STANDARD VOLTAGE
47 - Ground
Battery voltage should exist
(during active test)
SKIA3075E
7 - Ground Battery voltage should exist
ALOIA0010ZZ
6 - 38 Continuity should exist.
38 - Ground Continuity should not exist.
ALOIA0011ZZ
Revision: December 20092009 QX56

CCS-36
< COMPONENT DIAGNOSIS >
DTC 90 STOP LAMP RLY FIX
1. Connect stop lamp switch connector.
2. While performing active test (STOP LAMP: STP LMP DRIVEON) with CONSULT-III, chec k voltage between ICC unit harness
connector B17 terminal 29 and ground.
Are voltage readings as specified?
YES >> Replace ICC unit. Refer to CCS-70, "ICC Unit". Erase
DTC and perform ICC system running test. Refer to
CCS-8, "
ACTION TEST : ICC System Running Test".
NO >> Replace stop lamp switch. Erase DTC and perform ICC system running test. Refer to CCS-8, "
ACTION TEST : ICC System Running Test".
29 - Ground Approx. 0V (during active test)
SKIA1200E
Revision: December 20092009 QX56

CCS
DTC 92 ECM CIRCUITCCS-37
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DTC 92 ECM CIRCUIT
DTC 92 ECM CIRCUITINFOID:0000000003776947
1.DIAGNOSIS CHECK 1
Perform self-diagnosis with CONSULT-III.
Is "CAN COMM CIRCUIT" indicated?
YES >> Repair or replace as necessary. Erase DTC and perform ICC system running test. Refer to CCS-
8, "ACTION TEST : ICC System Running Test" .
NO >> GO TO 2
2.DIAGNOSIS CHECK 2
Perform ECM self-diagnosis.
Is malfunction indicated?
YES >> Repair or replace as necessary. Erase DTC and perform ICC system running test. Refer to CCS-
8, "ACTION TEST : ICC System Running Test".
NO >> Replace ICC unit. Refer to CCS-70, "
ICC Unit". Erase DTC and perform ICC system running test.
Refer to CCS-8, "
ACTION TEST : ICC System Running Test".
Revision: December 20092009 QX56

CCS-38
< COMPONENT DIAGNOSIS >
DTC 96 NP RANGE
DTC 96 NP RANGE
DTC 96 NP RANGEINFOID:0000000003776948
1.CHECK ICC UNIT CONNECTORS
1. Turn ignition switch OFF.
2. Disconnect ICC unit harness connectors and connect them securely again. Erase DTC, then perform self- diagnosis of ICC system again.
Does the DTC reset?
YES >> GO TO 2
NO >> • Poor connector connection. • Check connector. Check connector housing for disconnected, loose, bent, and collapsed termi-nals. If any malfunction is detected, repair as necessary. Erase DTC and perform ICC system
running test. Refer to CCS-8, "
ACTION TEST : ICC System Running Test".
2.CHECK NP RANGE SWITCH SIGNAL
With data monitor, check that “NP RANGE SW” operates normally.
Does the "NP RANGE SW" monitor item operate normally?
YES >> Perform TCM diagnosis. Refer to TM-30, "Introduction".
NO >> GO TO 3
3.CHECK HARNESS BETWEEN ICC UNIT AND TCM
1. Turn ignition switch OFF.
2. Disconnect ICC unit harness connectors and A/T assembly har- ness connector.
3. Check continuity between I CC unit harness connector B13 ter-
minal 7 and A/T assembly harness connector F9 terminal 9.
Does continuity exist?
YES >> Replace ICC unit. Refer to CCS-70, "ICC Unit". Erase
DTC and perform ICC system running test. Refer to
CCS-8, "
ACTION TEST : ICC System Running Test".
NO >> • Repair harness between ICC unit and TCM. • Erase DTC and perform ICC system running test. Refer to CCS-8, "
ACTION TEST : ICC Sys-
tem Running Test".
7 - 9 Continuity should exist.
SKIA5982E
Revision: December 20092009 QX56

CCS
DTC 97 AT CIRCUITCCS-39
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DTC 97 AT CIRCUIT
DTC 97 AT CIRCUITINFOID:0000000003776949
1.CHECK A/T CIRCUIT
With TCM diagnosis, check that shift operates normally. Refer to TM-20, "
TCM Function".
Is the transmission operating normally?
YES >> Replace ICC unit. Refer to CCS-70, "ICC Unit".
NO >> • Perform TCM diagnosis. • Erase DTC and perform self-diagnosis of ICC system again.
Revision: December 20092009 QX56

CCS-40
< COMPONENT DIAGNOSIS >
DTC 98 GEAR POSITION
DTC 98 GEAR POSITION
DTC 98 GEAR POSITIONINFOID:0000000003776950
1.DIAGNOSTIC CHECK
Perform ICC self diagnosis.
Does "DTC 43 VDC/TCS/ABS CIRC" or "DTC 41 VHCL SP EED SE CIRC" indicated in self-diagnosis display
item?
YES >> Repair or replace as necessary. Erase DTC and perform self-diagnosis of ICC system again.
NO >> GO TO 2
2.CHECK VEHICLE SPEED SIGNAL
With data monitor, check that “VHCL SPEED SE” is normal.
Does the "VHCL SPEED SE" monitor item display normally?
YES >> GO TO 3
NO >> Replace ICC unit. Refer to CCS-70, "
ICC Unit". Erase DTC and perform self-diagnosis of ICC sys-
tem again.
3.CHECK GEAR SHIFT POSITION
Check that gear positions are correct in A/T.
Does the transmission operate normally?
YES >> GO TO 5
NO >> GO TO 4
4.CHECK TCM GEAR POSITION SIGNAL
With TCM data monitor, check that gear positions are correct.
Does the data monitor indicate proper gear positions?
YES >> Replace ICC unit. Refer to CCS-70, "ICC Unit".
NO >> • Perform TCM diagnosis.
• Erase DTC and perform self-d iagnosis of ICC system again.
5.CHECK TCM TURBINE ROTATION
With TCM diagnosis, check that turbine rpm is normal. Refer to TM-47, "
Description".
Does the TCM check OK?
YES >> Replace ICC unit. Refer to CCS-70, "ICC Unit".
NO >> • Perform TCM diagnosis.
• Erase DTC and perform self-d iagnosis of ICC system again. CCS-17, "
Diagnosis Description"
Revision: December 20092009 QX56