brake INFINITI QX56 2007 Factory Owner's Manual
[x] Cancel search | Manufacturer: INFINITI, Model Year: 2007, Model line: QX56, Model: INFINITI QX56 2007Pages: 3061, PDF Size: 64.56 MB
Page 53 of 3061
![INFINITI QX56 2007 Factory Owners Manual ACS-40
< SERVICE INFORMATION >[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
7.CHECK ICC BRAKE HOLD RELAY CIRCUIT
1. Disconnect ICC unit and stop lamp switch connectors.
2. Check continuity between INFINITI QX56 2007 Factory Owners Manual ACS-40
< SERVICE INFORMATION >[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
7.CHECK ICC BRAKE HOLD RELAY CIRCUIT
1. Disconnect ICC unit and stop lamp switch connectors.
2. Check continuity between](/img/42/57029/w960_57029-52.png)
ACS-40
< SERVICE INFORMATION >[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
7.CHECK ICC BRAKE HOLD RELAY CIRCUIT
1. Disconnect ICC unit and stop lamp switch connectors.
2. Check continuity between ICC unit harness connector B17 ter-
minal 38 and ICC brake hold relay harness connector E134 ter-
minal 7.
3. Check continuity between ICC unit harness connector B17 ter-
minal 38 and stop lamp switch harness connector E38 terminal
4.
OK or NG
OK >> Replace ICC unit. Refer to ACS-55. Erase DTC and perform ICC system running test. Refer to
ACS-9, "
ICC System Running Test" . Then perform self-diagnosis of ICC system again.
NG >> • Repair harness between ICC unit and ICC brake hold relay or stop lamp switch.
• Erase DTC and perform ICC system running test. Refer to ACS-9, "
ICC System Running Test".
Then perform self-diagnosis of ICC system again.
DTC 46 OPERATION SW CIRCINFOID:0000000003533802
1.CHECK ECM CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect ECM connector and connect it securely again. Erase DTC, then perform self-diagnosis of ICC
system again.
OK or NG
OK >> • Poor connector connection.
• Check connector. Check connector housing for disconnected, loose, bent, and collapsed termi-
nals. If any malfunction is detected, repair as as necessary. Erase DTC and perform ICC system
running test. Refer to ACS-9, "
ICC System Running Test". Then perform self-diagnosis of ICC
system again.
NG >> GO TO 2.
2.CHECK ICC STEERING SWITCH
Check ICC steering switch. Refer to ACS-54, "
ICC Steering Switch" .
OK or NG
OK >> GO TO 3.
NG >> Replace ICC steering switch assembly. Refer to ACS-54, "
ICC Steering Switch". Erase DTC and
perform ICC system running test. Refer to ACS-9, "
ICC System Running Test". Then perform self-
diagnosis of ICC system again.
3.CHECK ICC STEERING SWITCH SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM and spiral cable connectors.
3. Check continuity between ECM harness connectors E16 and
F54 terminals 67, 99 and spiral cable harness connector M30
terminals 33, 34.
OK or NG
OK >> GO TO 4.Continuity should exist.
Continuity should exist.
WKIA3403E
67 - 33, 99 - 34 Continuity should exist.
WKIA1928E
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![INFINITI QX56 2007 Factory Owners Manual TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-41
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NG >> • Repair harness between ECM and spiral cable.
• Erase DTC and perform ICC sy INFINITI QX56 2007 Factory Owners Manual TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-41
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NG >> • Repair harness between ECM and spiral cable.
• Erase DTC and perform ICC sy](/img/42/57029/w960_57029-53.png)
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-41
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NG >> • Repair harness between ECM and spiral cable.
• Erase DTC and perform ICC system running test. Refer to ACS-9, "
ICC System Running Test".
Then perform self-diagnosis of ICC system again.
4.CHECK ICC STEERING SWITCH SIGNAL CIRCUIT
1. Disconnect remaining spiral cable connector.
2. Check continuity between spiral cable (A) (to vehicle) terminals
33, 34 and spiral cable (B) (to switch) terminals 14,15.
OK or NG
OK >> Replace ECM. Erase DTC and perform ICC system run-
ning test. Refer to ACS-9, "
ICC System Running Test".
Then perform self-diagnosis of ICC system again.
NG >> • Replace spiral cable. Refer to SRS-37, "
Removal and
Installation".
• Erase DTC and perform ICC system running test.
Refer to ACS-9, "
ICC System Running Test". Then perform self-diagnosis of ICC system again.
DTC 74 LASER BEAM OFF CNTRINFOID:0000000003533803
1.DIAGNOSTIC CHECK
1. Adjust laser beam aiming. Refer to ACS-12
. Erase DTC and perform ICC system running test. Refer to
ACS-9, "
ICC System Running Test" .
2. Perform self-diagnosis of ICC system. Is DTC 74 LASER BEAM OFF CNTR indicated?
YES or NO
YES >> • Replace ICC sensor and adjust laser beam aiming. Refer to ACS-55, "ICC Sensor" .
• Erase DTC and perform ICC system running test. Refer to ACS-9, "
ICC System Running Test".
Then perform self-diagnosis of ICC system again.
NO >> Inspection end.
DTC 90 STOP LAMP RLY FIXINFOID:0000000003533804
1.CHECK ICC UNIT CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect and check ICC unit connector.
OK or NG
OK >> GO TO 2.
NG >> • Connector malfunction.
• Erase DTC and perform ICC system running test. Refer to ACS-9, "
ICC System Running Test".
Then perform self-diagnosis of system.
2.CHECK STOP LAMP SWITCH AND ICC BRAKE SWITCH
With CONSULT-II
1. Connect ICC unit connector and turn ignition switch ON.
2. With data monitor, check that “STOP LAMP SW” and “BRAKE SW” operate normally.
OK or NG
OK >> GO TO 11.
NG >> • 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. Refer to BR-5
.
OK or NG
OK >> GO TO 4.
NG >> After adjustment, erase DTC and perform ICC system running test. Refer to ACS-9, "
ICC System
Running Test". Then perform self-diagnosis of ICC system again. 34 - 14, 33 - 15 Continuity should exist.
WKIA4572E
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![INFINITI QX56 2007 Factory Owners Manual ACS-42
< SERVICE INFORMATION >[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
4.CHECK ICC BRAKE SWITCH
Check ICC brake switch. Refer to ACS-54, "
ICC Brake Switch and Stop Lamp Switch" .
OK or NG
OK INFINITI QX56 2007 Factory Owners Manual ACS-42
< SERVICE INFORMATION >[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
4.CHECK ICC BRAKE SWITCH
Check ICC brake switch. Refer to ACS-54, "
ICC Brake Switch and Stop Lamp Switch" .
OK or NG
OK](/img/42/57029/w960_57029-54.png)
ACS-42
< SERVICE INFORMATION >[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
4.CHECK ICC BRAKE SWITCH
Check ICC brake switch. Refer to ACS-54, "
ICC Brake Switch and Stop Lamp Switch" .
OK or NG
OK >> GO TO 5.
NG >> Replace ICC brake switch. Erase DTC and perform ICC system running test. Refer to ACS-9,
"ICC System Running Test". Then perform self-diagnosis of ICC system again.
5.CHECK ICC BRAKE HOLD RELAY
Disconnect ICC brake hold relay and check continuity between ICC
brake hold relay terminal 4 and terminal 3.
OK or NG
OK >> GO TO 6.
NG >> Replace ICC brake hold relay. Erase DTC and perform
ICC system running test. Refer to ACS-9, "
ICC System
Running Test". Then perform self-diagnosis of ICC sys-
tem again.
6.CHECK HARNESS THROUGH ICC BRAKE HOLD RELAY, ICC BRAKE SWITCH, ICC UNIT
1. Disconnect ECM and ICC unit harness connectors.
2. Check continuity between ICC brake hold relay harness connec-
tor E134 terminal 4 and ICC unit harness connector B17 termi-
nal 29.
3. Check continuity between ICC unit harness connector B17 ter-
minal 29 and ground.
OK or NG
OK >> GO TO 7.
NG >> • 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 ACS-9, "
ICC System Running Test".
Then perform self-diagnosis of ICC system again.
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 3 and ground.
OK or NG
OK >> Replace ICC unit. Refer to ACS-55, "ICC Unit". Erase
DTC and perform ICC system running test. Refer to
ACS-9, "
ICC System Running Test". Then perform self-
diagnosis of ICC system again.
NG >> • Check fuse or ICC brake hold relay power supply sys-
tem harness.
• Erase DTC and perform ICC system running test. Refer to ACS-9, "
ICC System Running Test".
Then perform self-diagnosis of ICC system again.
8.CHECK STOP LAMP SWITCHContinuity should exist.
SKIA6658E
Continuity should exist.
Continuity should not exist.
WKIA1929E
Battery voltage should exist
WKIA3618E
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![INFINITI QX56 2007 Factory Owners Manual TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-43
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1. Turn ignition switch OFF.
2. Check stop lamp switch. Refer to ACS-54, "
ICC Brake Sw INFINITI QX56 2007 Factory Owners Manual TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-43
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1. Turn ignition switch OFF.
2. Check stop lamp switch. Refer to ACS-54, "
ICC Brake Sw](/img/42/57029/w960_57029-55.png)
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-43
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1. Turn ignition switch OFF.
2. Check stop lamp switch. Refer to ACS-54, "
ICC Brake Switch and Stop Lamp Switch" .
OK or NG
OK >> GO TO 9.
NG >> Replace stop lamp switch. Erase DTC and perform ICC system running test. Refer to ACS-9,
"ICC System Running Test". Then perform self-diagnosis of ICC system again.
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.
OK or NG
OK >> Replace ICC unit. Refer to ACS-55, "ICC Unit". Erase DTC and perform ICC system running test.
Refer to ACS-9, "
ICC System Running Test". Then perform self-diagnosis of ICC system again.
NG >> GO TO 10.
10.CHECK ICC BRAKE HOLD RELAY
1. Disconnect ICC brake hold relay.
2. Check continuity between ICC brake hold relay E134 terminal 7
and terminal 6.
OK or NG
OK >> Replace ICC unit. Refer to ACS-55, "ICC Unit". Erase
DTC and perform ICC system running test. Refer to
ACS-9, "
ICC System Running Test". Then perform self-
diagnosis of ICC system again.
NG >> Replace ICC brake hold relay. Erase DTC and perform
ICC system running test. Refer to ACS-9, "
ICC System Running Test". Then perform self-diagno-
sis of ICC system again.
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.
OK or NG
OK >> GO TO 12.
NG >> • 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 ACS-9, "
ICC System Running Test". Then
perform self-diagnosis of ICC system again.
12.CHECK ICC BRAKE HOLD RELAY Continuity should not exist.
SKIA6659E
47 - 1 Continuity should exist.
47 - Ground Continuity should not exist.
SKIA6660E
Continuity should exist.
SKIA6661E
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![INFINITI QX56 2007 Factory Owners Manual ACS-44
< SERVICE INFORMATION >[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Check continuity between ICC brake hold relay terminal 1 and termi-
nal 2.
OK or NG
OK >> GO TO 13.
NG >> Replace ICC br INFINITI QX56 2007 Factory Owners Manual ACS-44
< SERVICE INFORMATION >[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Check continuity between ICC brake hold relay terminal 1 and termi-
nal 2.
OK or NG
OK >> GO TO 13.
NG >> Replace ICC br](/img/42/57029/w960_57029-56.png)
ACS-44
< SERVICE INFORMATION >[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Check continuity between ICC brake hold relay terminal 1 and termi-
nal 2.
OK or NG
OK >> GO TO 13.
NG >> Replace ICC brake hold relay. Erase DTC and perform
ICC system running test. Refer to ACS-9, "
ICC System
Running Test". Then perform self-diagnosis of ICC sys-
tem again.
13.CHECK ICC UNIT STANDARD VOLTAGE
With CONSULT-II
1. Connect connectors of ICC unit and stop lamp switch.
2. While performing active test (STOP LAMP: STP LMP DRIVE
ON) with CONSULT-II, check voltage between ICC unit harness
connector B17 terminal 47 and ground.
OK or NG
OK >> GO TO 14.
NG >> Replace ICC unit. Refer to ACS-55, "
ICC Unit". Erase
DTC and perform ICC system running test. Refer to
ACS-9, "
ICC System Running Test". Then perform self-diagnosis of ICC system again.
14.CHECK ICC BRAKE HOLD RELAY POWER SUPPLY CIRCUIT
Check voltage between ICC brake hold relay harness connector
E134 terminal 6 and ground.
OK or NG
OK >> GO TO 15.
NG >> • Check fuse or ICC brake hold relay power supply har-
ness.
• Erase DTC and perform ICC system running test.
Refer to ACS-9, "
ICC System Running Test". Then
perform self-diagnosis of ICC system again.
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 E134 terminal 7 and ICC unit harness connector B17 termi-
nal 38.
4. Check continuity between ICC unit harness connector B17 ter-
minal 38 (R/G) and ground.
OK or NG
OK >> GO TO 16.
NG >> • Repair harness between ICC brake hold relay and ICC unit or between ICC brake hold relay
and stop lamp switch. Continuity should exist
(minimal resistance through coil will exist)
SKIA6662E
47 - Ground Battery voltage should exist
(during active test)
SKIA3075E
6 - Ground Battery voltage should exist
WKIA1931E
7 - 38 Continuity should exist.
38 - Ground Continuity should not exist.
WKIA1932E
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![INFINITI QX56 2007 Factory Owners Manual TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-45
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• Erase DTC and perform ICC system running test. Refer to ACS-9, "ICC System Running INFINITI QX56 2007 Factory Owners Manual TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
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• Erase DTC and perform ICC system running test. Refer to ACS-9, "ICC System Running](/img/42/57029/w960_57029-57.png)
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-45
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• Erase DTC and perform ICC system running test. Refer to ACS-9, "ICC System Running Test".
Then perform self-diagnosis of ICC system again.
16.CHECK ICC BRAKE HOLD RELAY
With CONSULT-II
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-II, and make sure that stop lamps are illuminated.
OK or NG
OK >> GO TO 17.
NG >> Replace ICC brake hold relay. Erase DTC and perform ICC system running test. Refer to ACS-9,
"ICC System Running Test". Then perform self-diagnosis of ICC system again.
17.CHECK ICC UNIT STANDARD VOLTAGE
With CONSULT-II
1. Connect stop lamp switch connector.
2. While performing active test (STOP LAMP: STP LMP DRIVE
ON) with CONSULT-II, check voltage between ICC unit harness
connector B17 terminal 29 and ground.
OK or NG
OK >> Replace ICC unit. Refer to ACS-55, "ICC Unit". Erase
DTC and perform ICC system running test. Refer to
ACS-9, "
ICC System Running Test". Then perform self-
diagnosis of ICC system again.
NG >> Replace stop lamp switch. Erase DTC and perform ICC system running test. Refer to ACS-9,
"ICC System Running Test". Then perform self-diagnosis of ICC system again.
DTC 92 ECM CIRCUITINFOID:0000000003533805
1.DIAGNOSIS CHECK 1
With CONSULT-II
Perform self-diagnosis with CONSULT-II. Is “CAN COMM CIRCUIT” indicated?
YES or NO
YES >> Repair or replace as necessary. Erase DTC and perform ICC system running test. Refer to ACS-
9, "ICC System Running Test" . Then perform self-diagnosis of ICC system again.
NO >> GO TO 2.
2.DIAGNOSIS CHECK 2
With CONSULT-II
Perform ECM self-diagnosis with CONSULT-II. Is malfunction indicated?
YES or NO
YES >> Repair or replace as necessary. Erase DTC and perform ICC system running test. Refer to ACS-
9, "ICC System Running Test". Then perform self-diagnosis of ICC system again.
NO >> Replace ICC unit. Refer to ACS-55, "
ICC Unit". Erase DTC and perform ICC system running test.
Refer to ACS-9, "
ICC System Running Test". Then perform self-diagnosis of ICC system again.
DTC 96 NP RANGEINFOID:0000000003533806
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.
OK or NG
OK >> GO TO 2.
NG >> • Poor connector connection.
29 - Ground Approx. 0V (during active test)
SKIA1200E
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![INFINITI QX56 2007 Factory Owners Manual ACS-50
< SERVICE INFORMATION >[ICC]
TROUBLE DIAGNOSIS FOR SYMPTOMS
2.CHECK ICC UNIT CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect ICC unit harness connectors.
3. Check connector housing for dis INFINITI QX56 2007 Factory Owners Manual ACS-50
< SERVICE INFORMATION >[ICC]
TROUBLE DIAGNOSIS FOR SYMPTOMS
2.CHECK ICC UNIT CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect ICC unit harness connectors.
3. Check connector housing for dis](/img/42/57029/w960_57029-62.png)
ACS-50
< SERVICE INFORMATION >[ICC]
TROUBLE DIAGNOSIS FOR SYMPTOMS
2.CHECK ICC UNIT CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect ICC unit harness connectors.
3. Check connector housing for disconnected, loose, bent, and collapsed terminals.
OK or NG
OK >> GO TO 3.
NG >> • Poor connector connection.
• Repair ICC unit connector. Erase DTC and perform ICC system running test. Refer to ACS-9,
"ICC System Running Test". Then perform self-diagnosis of ICC system again.
3.DIAGNOSIS CHECK
With CONSULT-II
• Perform self-diagnosis with CONSULT-II. Is “CAN COMM CIRCUIT” indicated?
YES or NO
YES >> Refer to ACS-37, "DTC 20 CAN COMM CIRCUIT".
NO >> Refer to ACS-40, "
DTC 46 OPERATION SW CIRC".
Symptom 2 the ICC System Cannot Be Set (ON/OFF Switch Turns On/Off)
INFOID:0000000003533816
The ICC cannot be set in the following cases.• When the vehicle speed is not in range of approx. 40 km/h (25 MPH) to 144 km/h (89 MPH).
• When the selector lever is in "N".
• While the brake is in operation.
• When the windshield wipers are operating.
1.CHECK CAUSE OF AUTOMATIC CANCELLATION
With CONSULT-II
1. With “CAUSE OF AUTO-CANCEL” in "WORK SUPPORT" on CONSULT-II, check if any cause of cancel-
lation exists.
OK or NG
OK >> • Cancel with appropriate cause.
• For causes A, B, or C, go to specified diagnosis.
A: “OPE SW VOLT CIRC” : Refer to ACS-40, "
DTC 46 OPERATION SW CIRC".
B: “VHCL SPD UNMATCH” : Refer to ACS-38, "
DTC 41 VHCL SPEED SE CIRC".
C: “IGN LOW VOLT” : Refer to ACS-37, "
DTC 31 POWER SUPPLY CIR1, DTC 34
POWER SUPPLY CIR2".
NG >> GO TO 2.
2.PERFORM SELF-DIAGNOSIS
With CONSULT-II
1. Perform CONSULT-II self-diagnosis to check for malfunctioning items.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace as necessary, erase DTC. Perform ICC system running test. Refer to ACS-9,
"ICC System Running Test". Then perform self-diagnosis of ICC system again.
3.CHECK SWITCHES AND VEHICLE SPEED SIGNAL
With CONSULT-II
1. With "DATA MONITOR" on the CONSULT-II, check that the following switches and vehicle speed signal
operate normally.
A: VHCL SPEED SE B: NP RANGE SW
C: BRAKE SW D: SET/COAST SW
OK or NG
OK >> Replace ICC unit and erase DTC. Refer to ACS-55, "ICC Unit". Perform ICC system running test.
Refer to ACS-9, "
ICC System Running Test". Then perform self-diagnosis of ICC system again.
NG >> • A: Refer to ACS-38, "
DTC 41 VHCL SPEED SE CIRC".
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![INFINITI QX56 2007 Factory Owners Manual TROUBLE DIAGNOSIS FOR SYMPTOMS
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• B: Refer to ACS-51, "Symptom 4 the ICC System Is Not Cancelled When the Gear Is in ‘N’".
• INFINITI QX56 2007 Factory Owners Manual TROUBLE DIAGNOSIS FOR SYMPTOMS
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• B: Refer to ACS-51, "Symptom 4 the ICC System Is Not Cancelled When the Gear Is in ‘N’".
•](/img/42/57029/w960_57029-63.png)
TROUBLE DIAGNOSIS FOR SYMPTOMS
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• B: Refer to ACS-51, "Symptom 4 the ICC System Is Not Cancelled When the Gear Is in ‘N’".
• C: Refer to ACS-38, "
DTC 45 BRAKE SW/STOP L SW".
• D: Refer to ACS-40, "
DTC 46 OPERATION SW CIRC".
Symptom 3 the ICC System Cannot Be Operated by the CANCEL Switch, ACCEL/
RES Switch, or DISTANCE Switch
INFOID:0000000003533817
RESUME will not function in the following cases:
• When ON/OFF switch is pressed once after the ICC system was ON.
• When the vehicle speed is less than 32 km/h (20 MPH).
1.CHECK SWITCH
With CONSULT-II
1. With "DATA MONITOR" on the CONSULT-II, check that the following switches operate normally.
“RESUME/ACC SW”, “CANCEL SW”, “DISTANCE ADJ”.
OK or NG
OK >> Replace ICC unit and erase DTC. Refer to ACS-55, "ICC Unit". Perform ICC system running test.
Refer to ACS-9, "
ICC System Running Test". Then perform self-diagnosis of ICC system again.
NG >> GO TO 2.
2.CHECK DIAGNOSIS
With CONSULT-II
• Perform self-diagnosis with CONSULT-II. Is “CAN COMM CIRCUIT” indicated?
YES or NO
YES >> Refer to ACS-37, "DTC 20 CAN COMM CIRCUIT".
NO >> Refer to ACS-40, "
DTC 46 OPERATION SW CIRC".
Symptom 4 the ICC System Is Not Cancelled When the Gear Is in ‘N’INFOID:0000000003533818
1.CHECK D RANGE SWITCH
With CONSULT-II
1. With "DATA MONITOR" on the CONSULT-II, check that “NP RANGE SW” operates normally.
OK or NG
OK >> Replace ICC unit and erase DTC. Refer to ACS-55, "ICC Unit". Perform ICC system running test.
Refer to ACS-9, "
ICC System Running Test". Then perform self-diagnosis of ICC system again.
NG >> GO TO 2.
2.CHECK CAN COMMUNICATION
With CONSULT-II
1. With CONSULT-II self-diagnosis, check “CAN COMM CIRCUIT”.
OK or NG
OK >> GO TO 3.
NG >> Refer to ACS-37, "
DTC 20 CAN COMM CIRCUIT".
3.CHECK NP RANGE SWITCH
1. With "DATA MONITOR" on the CONSULT-II, check that “N” position switch operates normally.
OK or NG
OK >> Replace ICC unit. Refer to ACS-55, "ICC Unit". Perform ICC system running test. Refer to ACS-9,
"ICC System Running Test". Then perform self-diagnosis of ICC system again.
NG >> Repair or replace as necessary. Perform ICC system running test. Refer to ACS-9, "
ICC System
Running Test". Then perform self-diagnosis of ICC system again.
Symptom 5 Chime Does Not SoundINFOID:0000000003533819
The chime may not sound occasionally in the following cases even if the distance from the vehicle ahead is
short:
• When the speed difference from that of the vehicle ahead is small (both vehicles driving at similar speed).
• When the vehicle ahead drives at faster speed (the actual distance is increasing).
Page 67 of 3061
![INFINITI QX56 2007 Factory Owners Manual ACS-54
< SERVICE INFORMATION >[ICC]
ELECTRICAL COMPONENT INSPECTION
ELECTRICAL COMPONENT INSPECTION
ICC Steering SwitchINFOID:0000000003533823
1. Disconnect ICC steering switch.
2. Check resistance be INFINITI QX56 2007 Factory Owners Manual ACS-54
< SERVICE INFORMATION >[ICC]
ELECTRICAL COMPONENT INSPECTION
ELECTRICAL COMPONENT INSPECTION
ICC Steering SwitchINFOID:0000000003533823
1. Disconnect ICC steering switch.
2. Check resistance be](/img/42/57029/w960_57029-66.png)
ACS-54
< SERVICE INFORMATION >[ICC]
ELECTRICAL COMPONENT INSPECTION
ELECTRICAL COMPONENT INSPECTION
ICC Steering SwitchINFOID:0000000003533823
1. Disconnect ICC steering switch.
2. Check resistance between terminals 14 and 15 while depressing
each switch.
ICC Brake Switch and Stop Lamp SwitchINFOID:0000000003533824
Check each switch after adjusting brake pedal. Refer to BR-5.
Parking Brake SwitchINFOID:0000000003533825
ICC Steering Switch (A) ConditionResistance [Ω]
(Approx.)
ON/OFF Depressed 0
Released 5,456
DISTANCE Depressed 741
Released 5,456
ACCEL/RES Depressed 2,586
Released 5,456
COAST/SET Depressed 1,406
Released 5,456
CANCEL Depressed 309
Released 5,456
WKIA4573E
Continuity
ICC brake switch Stop lamp switch
When brake pedal is depressed No Yes
When brake pedal is released Yes No
WKIA3405E
Continuity to ground
Parking brake pedal depressed Yes
Parking brake pedal released No
WKIA1918E
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AT-1
TRANSMISSION/TRANSAXLE
D
E
F
G
H
I
J
K
L
M
SECTION AT
A
B
AT
N
O
P
CONTENTS
AUTOMATIC TRANSMISSION
SERVICE INFORMATION ............................6
INDEX FOR DTC .................................................6
Alphabetical Index .....................................................6
DTC No. Index ..........................................................6
PRECAUTIONS ...................................................8
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...................................................................
8
Precaution for On Board Diagnosis (OBD) System
of A/T and Engine .....................................................
8
Precaution .................................................................8
Service Notice or Precaution .....................................9
PREPARATION ..................................................11
Special Service Tool ...............................................11
Commercial Service Tool ........................................12
A/T FLUID ...........................................................13
Changing Automatic Transmission Fluid (ATF) ......13
Checking Automatic Transmission Fluid (ATF) .......13
A/T Fluid Cooler Cleaning .......................................15
A/T CONTROL SYSTEM ....................................19
Cross-Sectional View (2WD models) ......................19
Cross-Sectional View (4WD models) ......................20
Shift Mechanism ......................................................20
TCM Function ..........................................................31
CAN Communication ...............................................32
Input/Output Signal of TCM .....................................33
Line Pressure Control .............................................33
Shift Control ............................................................35
Lock-up Control .......................................................36
Engine Brake Control ..............................................37
Control Valve ...........................................................37
ON BOARD DIAGNOSTIC (OBD) SYSTEM ......39
Introduction .............................................................39
OBD-II Function for A/T System ..............................39
One or Two Trip Detection Logic of OBD-II ............39
OBD-II Diagnostic Trouble Code (DTC) ..................39
Malfunction Indicator Lamp (MIL) ............................41
TROUBLE DIAGNOSIS ....................................43
DTC Inspection Priority Chart ..................................43
Fail-Safe ..................................................................43
How To Perform Trouble Diagnosis for Quick and
Accurate Repair .......................................................
44
A/T Electrical Parts Location ...................................50
Circuit Diagram ........................................................51
Inspections Before Trouble Diagnosis .....................51
Check Before Engine Is Started ..............................55
Check at Idle ............................................................55
Cruise Test - Part 1 .................................................56
Cruise Test - Part 2 .................................................58
Cruise Test - Part 3 .................................................59
Vehicle Speed When Shifting Gears .......................59
Vehicle Speed When Performing and Releasing
Complete Lock-up ...................................................
60
Vehicle Speed When Performing and Releasing
Slip Lock-up .............................................................
60
Symptom Chart ........................................................60
TCM Input/Output Signal Reference Value .............82
CONSULT-II Function (A/T) ....................................83
DTC U1000 CAN COMMUNICATION LINE .....91
Description ...............................................................91
On Board Diagnosis Logic .......................................91
Possible Cause ........................................................91
DTC Confirmation Procedure ..................................91
Wiring Diagram - AT - CAN .....................................92
Diagnosis Procedure ...............................................93
DTC P0615 START SIGNAL CIRCUIT .............94
Description ...............................................................94
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................
94
On Board Diagnosis Logic .......................................94
Possible Cause ........................................................94
DTC Confirmation Procedure ..................................94
Wiring Diagram - AT - STSIG ..................................95
Diagnosis Procedure ...............................................95