INFINITI QX56 2011 Factory Service Manual

CCS-126
< DTC/CIRCUIT DIAGNOSIS >[ICC]
C1A40 SYSTEM SWITCH CIRCUIT
C1A40 SYSTEM SWITCH CIRCUIT
DTC LogicINFOID:0000000006224369
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine and wait for approximately 10 minutes or more.
2. Perform “All DTC Reading” with CONSULT-III.
3. Check if the “C1A40” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“C1A40” detected as the current malfunction?
YES >> Refer to CCS-126, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006224370
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected ot her than “C1A40” in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“U1000” detected?
YES >> Perform the CAN communication system inspecti on. Repair or replace the malfunctioning parts.
Refer to CCS-145, "
ADAS CONTROL UNIT : DTC Logic".
NO >> GO TO 2.
2.CHECK DATA MONITOR
Check that “IBA SW” operate normally in “DATA MONITOR” of “ICC/ADAS”.
Is the inspection result normal?
YES >> Refer to GI-40, "Intermittent Incident".
NO >> GO TO 3.
3.CHECK HARNESS BETWEEN ADAS CO NTROL UNIT AND IBA OFF SWITCH
1. Disconnect ADAS control unit connector.
2. Check for continuity between the ADAS control unit harness connector and IBA OFF switch harness con-
nector.
3. Check for continuity between ADAS control unit and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair the harnesses or connectors.
DTC
(On board dis-
play) Trouble diagnosis
name DTC detecting condition Possible causes
C1A40 (40) SYSTEM SW CIRC IBA OFF switch remains “O
N” (short circuit) for
10 minutes or more  IBA OFF switch circuit
 IBA OFF switch
 ADAS control unit
ADAS control unit IBA OFF switch
Continuity
Connector Terminal Connector Terminal
B61 3 M93 7 Existed
ADAS control unit GroundContinuity
Connector Terminal
B61 3 Not existed
Revision: 2010 May2011 QX56

CCS
C1A40 SYSTEM SWITCH CIRCUITCCS-127
< DTC/CIRCUIT DIAGNOSIS > [ICC]
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4.CHECK IBA OFF SW ITCH GROUND CIRCUIT
Check for continuity between IBA O FF switch harness connector and ground.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair the harnesses or connectors.
5.CHECK IBA OFF SWITCH
1. Turn the ignition switch OFF.
2. Disconnect the IBA OFF switch connector.
3. Check the IBA OFF switch. Refer to CCS-127, "
Component Inspection (IBA OFF Switch)".
Is the inspection result normal?
YES >> Replace the ADAS control unit. Refer to DAS-63, "Removal and Installation".
NO >> Replace the IBA OFF switch.
Component Inspection (IBA OFF Switch)INFOID:0000000006224371
1.CHECK IBA OFF SWITCH
Check for continuity of IBA OFF switch.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace the IBA OFF switch.
IBA OFF switch
GroundContinuity
Connector Terminal
M93 6 Existed
Terminal Condition Continuity
67 When the IBA OFF switch is pressed Existed
When the IBA OFF switch is released Not existed
Revision: 2010 May2011 QX56

CCS-128
< DTC/CIRCUIT DIAGNOSIS >[ICC]
C1A50 ADAS CONTROL UNIT
C1A50 ADAS CONTROL UNIT
DTC LogicINFOID:0000000006224372
DTC DETECTION LOGIC
NOTE:
If DTC “C1A50” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to
CCS-145, "
ICC
SENSOR : DTC Logic".
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine.
2. Turn the MAIN switch of ICC system ON.
3. Perform “All DTC Reading” with CONSULT-III.
4. Check if the “C1A50” is detected as the current malfunction in “Self Diagnostic Result” of “LASER”.
Is
“C1A50” detected as the current malfunction?
YES >> Refer to CCS-128, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006224373
1.CHECK ICC SENSOR SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected ot her than “C1A50” in “Self Diagnostic Result” of “LASER”.
Is
“U1000” detected?
YES >> Perform the CAN communication system inspecti on. Repair or replace the malfunctioning parts.
Refer to CCS-145, "
ICC SENSOR : DTC Logic".
NO >> GO TO 2.
2.CHECK ADAS CONTROL UNIT SE LF-DIAGNOSIS RESULTS
Check if any DTC is detected in “S elf Diagnostic Result” of “ICC/ADAS”.
Is any DTC detected?
YES >> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
CCS-50, "
DTC Index".
NO >> Replace the ICC sensor. Refer to CCS-176, "
Exploded View".
DTC Trouble diagnosis name DTC detecting condition Possible cause
C1A50 ADAS MALFUNCTION If ADAS control unit is malfunctioning ADAS control unit
Revision: 2010 May2011 QX56

CCS
C1F01 ACCELERATOR PEDAL ACTUATORCCS-129
< DTC/CIRCUIT DIAGNOSIS > [ICC]
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C1F01 ACCELERATOR PEDAL ACTUATOR
DTC LogicINFOID:0000000006224374
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn the ignition switch OFF.
2. Turn the ignition switch ON.
3. Slowly depress the accelerator pedal completely, and then release it.
4. Repeat step 3 several times.
5. Perform “All DTC Readi ng” with CONSULT-III.
6. Check if the DTC “C1F01” is det ected as the current malfunction on the self-diagnosis results of “ICC/
ADAS”.
Is
“C1F01” detected as the current malfunction?
YES >> Refer to CCS-129, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006224375
1.CHECK ADAS CONTROL UNIT SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected other than “C1F01” in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“U1000” detected?
YES >> Perform the CAN communicati on system inspection. Repair or replace the malfunctioning parts.
Refer to CCS-145, "
ADAS CONTROL UNIT : DTC Logic".
NO >> GO TO 2.
2.CHECK ACCELERATOR PEDAL ACTU ATOR SELF-DIAGNOSIS RESULTS
Check if “C1F01” is detected in “Self Diagnostic Result” of “ACCELE PEDAL ACT”.
Is
“C1F01” detected?
YES >> Refer to DAS-166, "ACCELERATOR PEDAL ACTUATOR : DTC Logic".
NO >> Replace the ADAS control unit. Refer to DAS-63, "
Removal and Installation".
DTC
(On board dis-
play) Trouble diagnosis name DTC detecting condition Possible causes
C1F01 (91) APA MOTOR MALF
If the accelerator pedal
actuator motor error
is detected Accelerator pedal actuator integrated
motor malfunction
Revision: 2010 May2011 QX56

CCS-130
< DTC/CIRCUIT DIAGNOSIS >[ICC]
C1F02 ACCELERATOR PEDAL ACTUATOR
C1F02 ACCELERATOR PEDAL ACTUATOR
DTC LogicINFOID:0000000006224376
DTC DETECTION LOGIC
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine.
2. Turn the DCA system ON.
3. Perform “All DTC Reading” with CONSULT-III.
4. Check if the “C1F02” is detected as the current ma lfunction on the self-diagnosis results of “ICC/ADAS”.
Is
“C1F02” detected as the current malfunction?
YES >> Refer to CCS-130, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006224377
1.CHECK ADAS CONTROL UNIT SE LF-DIAGNOSIS RESULTS
Check if “U1000” is detected ot her than “C1F02” in “Self Diagnos tic Result” of “ICC/ADAS”.
Is
“U1000” detected?
YES >> Perform the CAN communication system inspecti on. Repair or replace the malfunctioning parts.
Refer to CCS-145, "
ADAS CONTROL UNIT : DTC Logic".
NO >> GO TO 2.
2.CHECK ACCELERATOR PEDAL ACTUAT OR SELF-DIAGNOSIS RESULTS
Check if “C1F02” is detected in “Self Diagnostic Result” of “ACCELE PEDAL ACT”.
Is
“C1F02” detected?
YES >> Refer to DAS-166, "ACCELERATOR PEDAL ACTUATOR : DTC Logic".
NO >> Replace the ADAS control unit. Refer to DAS-63, "
Removal and Installation".
DTC
(On board dis-
play) Trouble diagnosis name DTC detecting condition Possible causes
C1F02 (92) APA C/U MALF
If the accelerator pedal actuator integrated
control unit error is detected Accelerator pedal actuator integrated
control unit malfunction
Revision: 2010 May2011 QX56

CCS
C1F05 ACCELERATOR PEDAL ACTUATOR POWER SUPPLY CIRCUIT
CCS-131
< DTC/CIRCUIT DIAGNOSIS > [ICC]
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C1F05 ACCELERATOR PEDAL ACTU ATOR POWER SUPPLY CIRCUIT
DTC LogicINFOID:0000000006224378
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine.
2. Turn the DCA system ON.
3. Perform “All DTC Readi ng” with CONSULT-III.
4. Check if the “C1F05” is detected as the current malfunction on the self-diagnosis results of “ICC/ADAS”.
Is
“C1F05” detected as the current malfunction?
YES >> Refer to CCS-131, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006224379
1.CHECK ADAS CONTROL UNIT SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected other than “C1F05” in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“U1000” detected?
YES >> Perform the CAN communicati on system inspection. Repair or replace the malfunctioning parts.
Refer to CCS-145, "
ADAS CONTROL UNIT : DTC Logic".
NO >> GO TO 2.
2.CHECK ACCELERATOR PEDAL ACTU ATOR SELF-DIAGNOSIS RESULTS
Check if “C1F05” is detected in “Self Diagnostic Result” of “ACCELE PEDAL ACT”.
Is
“C1F05” detected?
YES >> Refer to DAS-171, "ACCELERATOR PEDAL ACTUATOR : DTC Logic".
NO >> Replace the ADAS control unit. Refer to DAS-63, "
Removal and Installation".
DTC
(On board
display) Trouble diagnosis name DTC detecting condition Possible causes
C1F05 (95) APA PWR SUPLY CIR The battery voltage sent to accelerator pedal
actuator remains less than 7.9 V or more than
19.3 V for 5 seconds  Harness, connector, or fuse
 Accelerator pedal actuator
Revision: 2010 May2011 QX56

CCS-132
< DTC/CIRCUIT DIAGNOSIS >[ICC]
U0104 ADAS CAN 1
U0104 ADAS CAN 1
DTC LogicINFOID:0000000006224380
DTC DETECTION LOGIC
NOTE:
If DTC “U0104” is detected along with DTC “U
1000”, first diagnose the DTC “U1000”. Refer to CCS-145, "
ICC
SENSOR : DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine.
2. Turn the MAIN switch of ICC system ON.
3. Perform “All DTC Reading” with CONSULT-III.
4. Check if the “U0104” is detected as the current malfunction in “Self Diagnostic Result” of “LASER”.
Is
“U0104” detected as the current malfunction?
YES >> Refer to CCS-132, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006224381
1.CHECK ICC SENSOR SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected other than “U0104” in “Self Diagnostic Result” of “LASER”.
Is
“U1000” detected?
YES >> Perform the CAN communication system inspecti on. Repair or replace the malfunctioning parts.
Refer to CCS-145, "
ICC SENSOR : DTC Logic".
NO >> GO TO 2.
2.CHECK ADAS CONTROL UNIT SE LF-DIAGNOSIS RESULTS
Check if any DTC is detected in “S elf Diagnostic Result” of “ICC/ADAS”.
Is any DTC detected?
YES >> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
CCS-50, "
DTC Index".
NO >> Replace the ICC sensor. Refer to CCS-176, "
Exploded View".
DTC Trouble diagnosis name DTC detecting condition Possible causes
U0104 ADAS CAN CIR 1 If ICC sensor detects an error signal that is re-
ceived from ADAS control unit via ITS commu-
nication ADAS control unit
Revision: 2010 May2011 QX56

CCS
U0121 VDC CAN 2CCS-133
< DTC/CIRCUIT DIAGNOSIS > [ICC]
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U0121 VDC CAN 2
ADAS CONTROL UNIT
ADAS CONTROL UNIT : DTC LogicINFOID:0000000006224382
DTC DETECTION LOGIC
NOTE:
If DTC “U0121” is detected along with DTC “U 1000”, first diagnose the DTC “U1000”. Refer to CCS-145,
"ADAS CONTROL UNIT : DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine.
2. Turn the MAIN switch of ICC system ON.
3. Perform “All DTC Readi ng” with CONSULT-III.
4. Check if the “U0121” is detected as the current ma lfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“U0121” detected as the current malfunction?
YES >> Refer to CCS-133, "ADAS CONTROL UNIT : Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
ADAS CONTROL UNIT : Diagnosis ProcedureINFOID:0000000006224383
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected other than “U0121” in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“U1000” detected?
YES >> Perform the CAN communicati on system inspection. Repair or replace the malfunctioning parts.
Refer to CCS-145, "
ADAS CONTROL UNIT : DTC Logic".
NO >> GO TO 2.
2.CHECK ABS ACTUATOR AND ELECTRIC UNIT (C ONTROL UNIT) SELF-DIAGNOSIS RESULTS
Check if any DTC is detected in “Self Diagnostic Result” of “ABS”.
Is any DTC detected?
YES >> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
BRC-51, "
DTC Index".
NO >> Replace the ADAS control unit. Refer to DAS-63, "
Removal and Installation".
ICC SENSOR
ICC SENSOR : DTC LogicINFOID:0000000006224384
DTC DETECTION LOGIC
NOTE:
If DTC “U0121” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to CCS-145, "
ICC
SENSOR : DTC Logic".
DTC
(On board dis- play) Trouble diagnosis name DTC detecting condition Possible causes
U0121 (127) VDC CAN CIR2 If ADAS control unit detects an error signal
that is received from
ABS actuator and electric
unit (control unit) via CAN communication ABS actuator and electric unit (control
unit)
DTC Trouble diagnosis name DTC detecting condition Possible causes
U0121 VDC CAN CIR2 If ICC sensor detects an error signal that is re-
ceived from ABS actuator
and electric unit
(control unit) via ADAS control unit ABS actuator and electric unit (control
unit)
Revision: 2010 May2011 QX56

CCS-134
< DTC/CIRCUIT DIAGNOSIS >[ICC]
U0121 VDC CAN 2
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine.
2. Turn the MAIN switch of ICC system ON.
3. Perform “All DTC Reading” with CONSULT-III.
4. Check if the “U0121” is detected as the current malfunction in “Self Diagnostic Result” of “LASER”.
Is
“U0121” detected as the current malfunction?
YES >> Refer to CCS-134, "ICC SENSOR : Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
ICC SENSOR : Diagnosis ProcedureINFOID:0000000006224385
1.CHECK ICC SENSOR SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected other than “U0121” in “Self Diagnostic Result” of “LASER”.
Is
“U1000” detected?
YES >> Perform the CAN communication system inspecti on. Repair or replace the malfunctioning parts.
Refer to CCS-145, "
ICC SENSOR : DTC Logic".
NO >> GO TO 2.
2.CHECK ADAS CONTROL UNIT SE LF-DIAGNOSIS RESULTS
Check if any DTC is detected in “S elf Diagnostic Result” of “ICC/ADAS”.
Is any DTC detected?
YES >> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
CCS-145, "
ADAS CONTROL UNIT : DTC Logic".
NO >> Replace the ICC sensor. Refer to CCS-176, "
Exploded View".
Revision: 2010 May2011 QX56

CCS
U0126 STRG SEN CAN 1CCS-135
< DTC/CIRCUIT DIAGNOSIS > [ICC]
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U0126 STRG SEN CAN 1
ADAS CONTROL UNIT
ADAS CONTROL UNIT : DTC LogicINFOID:0000000006224386
DTC DETECTION LOGIC
NOTE:
If DTC “U0126” is detected along with DTC “U 1000”, first diagnose the DTC “U1000”. Refer to CCS-145,
"ADAS CONTROL UNIT : DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine.
2. Turn the MAIN switch of ICC system ON.
3. Perform “All DTC Readi ng” with CONSULT-III.
4. Check if the “U0126” is detected as the current ma lfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“U0126” detected as the current malfunction?
YES >> Refer to CCS-135, "ADAS CONTROL UNIT : Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
ADAS CONTROL UNIT : Diagnosis ProcedureINFOID:0000000006224387
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected other than “U0126” in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“U1000” detected?
YES >> Perform the CAN communicati on system inspection. Repair or replace the malfunctioning parts.
Refer to CCS-145, "
ADAS CONTROL UNIT : DTC Logic".
NO >> GO TO 2.
2.CHECK ABS ACTUATOR AND ELECTRIC UNIT (C ONTROL UNIT) SELF-DIAGNOSIS RESULTS
Check if any DTC is detected in “Self Diagnostic Result” of “ABS”.
Is any DTC detected?
YES >> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
BRC-51, "
DTC Index".
NO >> Replace the ADAS control unit. Refer to DAS-63, "
Removal and Installation".
ICC SENSOR
ICC SENSOR : DTC LogicINFOID:0000000006224388
DTC DETECTION LOGIC
NOTE:
If DTC “U0126” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to CCS-145, "
ICC
SENSOR : DTC Logic".
DTC
(On board dis- play) Trouble diagnosis name DTC detecting condition Possible causes
U0126 (130) STRG SEN CAN CIR1 If ADAS control unit detects an error signal
that is received from steering angle sensor via
CAN communication Steering angle sensor
DTC Trouble diagnosis name DTC detecting condition Possible causes
U0126 STRG SEN CAN CIR1 If ICC sensor detects an error signal that is re-
ceived from steering angle sensor via ADAS
control unit Steering angle sensor
Revision: 2010 May2011 QX56