2011 INFINITI QX56 ignition

CCS-102
< DTC/CIRCUIT DIAGNOSIS >[ICC]
C1A13 STOP LAMP RELAY
2. Turn ignition switch ON.
3. Perform “All DTC Reading”.
4. Check if any DTC is detected in “Self Diagnostic Result” of “ENGINE”. Refer to
EC-98, "
DTC Index".
Is any DTC detected?
YES >> Repair or replace the malfunctioning part s identified by the self-diagnosis result.
NO >> GO TO 22.
22.PERFORM SELF-DIAGNOSIS OF ABS ACTUAT OR AND ELECTRIC UNIT (CONTROL UNIT)
1. Connect all connectors again if the connectors are disconnected.
2. Turn ignition switch ON.
3. Perform “All DTC Reading”.
4. Check if any DTC is detected in “Self Diagnostic Result” of “ABS”. Refer to BRC-51, "
DTC Index".
Is any DTC detected?
YES >> Repair or replace the malfunctioning part s identified by the self-diagnosis result.
NO >> Replace ADAS control unit. Refer to DAS-63, "
Removal and Installation".
Component InspectionINFOID:0000000006224325
1.CHECK ICC BRAKE HOLD RELAY
Apply battery voltage to ICC brake hold relay terminals 1 and 2, and
then check for continuity under the following conditions.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace ICC brake hold relay.
Terminal Condition Continuity
35 When the battery voltage is applied Existed
When the battery voltage is not ap-
plied
Not exist-
ed
JSOIA0075GB
Revision: 2010 May2011 QX56

CCS
C1A21 UNIT HIGH TEMPCCS-111
< DTC/CIRCUIT DIAGNOSIS > [ICC]
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C1A21 UNIT HIGH TEMP
ADAS CONTROL UNIT
ADAS CONTROL UNIT : DTC LogicINFOID:0000000006224341
DTC DETECTION LOGIC
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn the ignition switch OFF.
2. Wait for 10 minutes or more to cool the ICC sensor.
3. Start the engine.
4. Turn the MAIN switch of ICC system ON.
5. Perform “All DTC Readi ng” with CONSULT-III.
6. Check if the “C1A21” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“C1A21” detected as the current malfunction?
YES >> Refer to CCS-111, "ADAS CONTROL UNIT : Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
ADAS CONTROL UNIT : Diagnosis ProcedureINFOID:0000000006224342
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “C1A21” is detected in “S elf Diagnostic Result” of “LASER”.
Is
“C1A21” detected?
YES >> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
CCS-111, "
ICC SENSOR : DTC Logic".
NO >> Replace the ADAS control unit. Refer to DAS-63, "
Removal and Installation".
ICC SENSOR
ICC SENSOR : DTC LogicINFOID:0000000006224343
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn the ignition switch OFF.
2. Wait for 10 minutes or more.
3. Start the engine.
4. Turn the MAIN switch of ICC system ON.
5. Perform “All DTC Readi ng” with CONSULT-III.
6. Check if the “C1A21” is detected as the current malfunction in “Self Diagnostic Result” of “LASER”.
Is
“C1A21” detected as the current malfunction?
YES >> Refer to CCS-111, "ADAS CONTROL UNIT : Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
DTC
(On board dis- play) Trouble diagnosis
name DTC detecting condition Possible causes
C1A21 (21) ICC SENSOR HIGH
TEMP
ICC sensor judges high temperature abnormality Temperature around the ICC sensor
becomes high
DTC
Trouble diagnosis
name DTC detecting condition Possible causes
C1A21 UNIT HIGH TEMP Temperature detected by the temperature sensor
integrated in ICC sensor remains less than -45
°C
(-49 °F) or more than 105 °C (221 °F) for 5 sec-
onds or more Temperature around the ICC sensor
becomes extremely low or high
Revision: 2010 May2011 QX56

CCS-122
< DTC/CIRCUIT DIAGNOSIS >[ICC]
C1A37 ACCELERATOR PEDAL ACTUATOR CAN 2
C1A37 ACCELERATOR PEDAL ACTUATOR CAN 2
DTC LogicINFOID:0000000006224361
DTC DETECTION LOGIC
NOTE:
If DTC “C1A37” 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 DCA system ON.
3. Perform “All DTC Reading” with CONSULT-III.
4. Check if the “C1A37” is detected as the current malfunction in self-diagnosis results of “ICC/ADAS”.
Is
“C1A37” detected as the current malfunction?
YES >> Refer to CCS-122, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006224362
1.CHECK ADAS CONTROL UNIT SE LF-DIAGNOSIS RESULTS
Check if “U1000” is detected ot her than “C1A37” 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.REPLACE ACCELERATOR PEDAL ASSEMBLY
1. Turn the ignition switch OFF.
2. Replace the accelerator pedal assembly.
3. Turn the ignition switch ON.
4. Erases all self-diagnosis results.
5. Perform “All DTC Reading” again.
6. Check if the DTC “C1A37” is detected in self-diagnosis results of “ICC/ADAS”.
Is
“C1A37” detected?
YES >> Replace the ADAS control unit. Refer to DAS-63, "Removal and Installation".
NO >> INSPECTION END
DTC
(On board dis-
play) Trouble diagnosis name DTC detecting condition Possible causes
C1A37 (133) APA CAN CIR2 If ADAS control unit detects an error signal
that is received from accelerator pedal actu-
ator via ITS communication
Accelerator pedal actuator malfunction
Revision: 2010 May2011 QX56

CCS
C1A38 ACCELERATOR PEDAL ACTUATOR CAN 1CCS-123
< DTC/CIRCUIT DIAGNOSIS > [ICC]
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C1A38 ACCELERATOR PEDAL ACTUATOR CAN 1
DTC LogicINFOID:0000000006224363
DTC DETECTION LOGIC
NOTE:
If DTC “C1A38” 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 DCA system ON.
3. Perform “All DTC Readi ng” with CONSULT-III.
4. Check if the “C1A38” is detected as the current malfunction in self-diagnosis results of “ICC/ADAS”.
Is
“C1A38” detected as the current malfunction?
YES >> Refer to CCS-123, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006224364
1.CHECK ADAS CONTROL UNIT SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected other than “C1A38” 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.REPLACE ACCELERATOR PEDAL ASSEMBLY
1. Turn the ignition switch OFF.
2. Replace the accelerator pedal assembly.
3. Erases All self-diagnosis results.
4. Perform “All DTC Reading” again.
5. Check if the “C1A38” is detected in self-diagnosis results of “ICC/ADAS”.
Is
“C1A38” detected?
YES >> Replace the ADAS control unit. Refer to DAS-63, "Removal and Installation".
NO >> INSPECTION END
DTC
(On board dis-
play) Trouble diagnosis name DTC detecting condition Possible causes
C1A38 (132) APA CAN CIR1 If ADAS control unit detects an error signal
that is received from accelerator pedal actu-
ator via ITS communication
Accelerator pedal actuator malfunction
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
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
U1000 CAN COMM CIRCUITCCS-145
< DTC/CIRCUIT DIAGNOSIS > [ICC]
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U1000 CAN COMM CIRCUIT
ADAS CONTROL UNIT
ADAS CONTROL UNIT : DescriptionINFOID:0000000006227995
CAN COMMUNICATION
CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-vehicle mul-
tiplex communication line with high data communicati on speed and excellent error detection ability. Modern
vehicle is equipped with many electronic control units , and each control unit shares information and links with
other control units during operation (not independent). In CAN communication, control units are connected
with 2 communication lines (CAN-H, CAN-L) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads the required data only.
CAN communication signal chart. Refer to LAN-28, "
CAN COMMUNICATION SYSTEM : CAN Communica-
tion Signal Chart".
ITS COMMUNICATION
 ITS communication is a multiplex communication syste m. This enables the system to transmit and receive
large quantities of data at high speed by connec ting control units with 2 communication lines.
 ITS communication lines adopt twisted-pair line st yle (two lines twisted) for noise immunity.
ADAS CONTROL UNIT : DTC LogicINFOID:0000000006227996
DTC DETECTION LOGIC
NOTE:
If “U1000” is detected, first diagnose the CAN communication system.
ADAS CONTROL UNIT : Diagnosis ProcedureINFOID:0000000006227997
1.PERFORM THE SELF-DIAGNOSIS
1. Turn the ignition switch ON.
2. Turn the MAIN switch of ICC system ON, and then wait for 30 seconds or more.
3. Perform “All DTC Readi ng” with CONSULT-III.
4. Check if the “U1000” is detected as the current ma lfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“U1000” detected as the current malfunction?
YES >> Refer to LAN-18, "Trouble Diagnosis Flow Chart".
NO >> Refer to GI-40, "
Intermittent Incident".
ICC SENSOR
ICC SENSOR : DescriptionINFOID:0000000006224409
ITS COMMUNICATION
 ITS communication is a multiplex communication syste m. This enables the system to transmit and receive
large quantities of data at high speed by connec ting control units with 2 communication lines
 ITS communication lines adopt twisted-pair line st yle (two lines twisted) for noise immunity.
ICC SENSOR : DTC LogicINFOID:0000000006224410
DTC DETECTION LOGIC
DTC
(On board
display) Trouble diagnosis name DTC detecting condition Possible causes
U1000 (100) CAN COMM CIRCUIT If ADAS control unit is not transmitting or receiv-
ing CAN communication signal or ITS communi-
cation signal for 2 seconds or more  CAN communication system
 ITS communication system
Revision: 2010 May2011 QX56

CCS-146
< DTC/CIRCUIT DIAGNOSIS >[ICC]
U1000 CAN COMM CIRCUIT
ICC SENSOR : Diagnosis Procedure
INFOID:0000000006224411
1.PERFORM THE SELF-DIAGNOSIS
1. Turn the ignition switch ON.
2. Turn the MAIN switch of ICC system ON, and then wait for 2 seconds or more.
3. Perform “All DTC Reading” with CONSULT-III.
4. Check if the “U1000” is detected as the current malfunction in “Self Diagnostic Result” of “LASER”.
Is
“U1000” detected as the current malfunction?
YES >> Refer to LAN-18, "Trouble Diagnosis Flow Chart".
NO >> Refer to GI-40, "
Intermittent Incident".
DTC Trouble diagnosis name DTC detecting condition Possible causes
U1000 CAN COMM CIRCUIT If ICC sensor is not transmitting or receiving ITS
communication signal for 2 seconds or more ITS communication system
Revision: 2010 May2011 QX56