ignition INFINITI QX56 2011 Factory Service Manual

DAS-166
< DTC/CIRCUIT DIAGNOSIS >[DCA]
C1F01 ACCELERATOR PEDAL ACTUATOR
C1F01 ACCELERATOR PEDAL ACTUATOR
ADAS CONTROL UNIT
ADAS CONTROL UNIT : DTC LogicINFOID:0000000006228122
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 Reading” with CONSULT-III.
6. Check if the DTC “C1F01” is detected as the curr ent malfunction on the self-diagnosis results of “ICC/
ADAS”.
Is
“C1F01” detected as the current malfunction?
YES >> Refer to DAS-166, "ADAS CONTROL UNIT : Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
ADAS CONTROL UNIT : Diagnosis ProcedureINFOID:0000000006228123
1.CHECK ADAS CONTROL UNIT SE LF-DIAGNOSIS RESULTS
Check if “U1000” is detected ot her than “C1F01” 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 DAS-182, "
ADAS CONTROL UNIT : DTC Logic".
NO >> GO TO 2.
2.CHECK ACCELERATOR PEDAL ACTUAT OR 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".
ACCELERATOR PEDAL ACTUATOR
ACCELERATOR PEDAL ACTUATOR : DTC LogicINFOID:0000000006223586
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.
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
DTC Trouble diagnosis name DTC detecting condition Possible causes
C1F01 APA MOTOR MALF If the accelerator pedal actuator motor error
is detected Accelerator pedal actuator integrated
motor malfunction
Revision: 2010 May2011 QX56

DAS-170
< DTC/CIRCUIT DIAGNOSIS >[DCA]
C1F03 ACCELERATOR PEDAL ACTUATOR
C1F03 ACCELERATOR PEDAL ACTUATOR
DTC LogicINFOID:0000000006223592
DTC DETECTION LOGIC
NOTE:
When the accelerator pedal actuator operates ex
cessively, “C1F03” may be detected temporarily.
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn the ignition switch OFF.
2. Wait for 10 minutes or more and cool the accelerator pedal actuator integrated motor.
3. Drive the vehicle with DCA s ystem ON and operate the system.
CAUTION:
Always drive safely.
4. Stop the vehicle.
5. Perform “All DTC Reading” with CONSULT-III.
6. Check if the DTC “C1F03” is detected as the curr ent malfunction in self-diagnosis results of “ACCELE
PEDAL ACT”.
Is
“C1F03” detected as the current malfunction?
YES >> Refer to DAS-170, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006223593
1.REPLACE ACCELERATOR PEDAL ASSEMBLY
Perform DTC confirmation procedure. If “C1F03” is detected, replace the accelerator pedal assembly. Refer to
DAS-213, "
Exploded View".
>> INSPECTION END
DTC Trouble diagnosis
name DTC detecting condition Possible causes
C1F03 APA HI TEMP  The temperature of the motor integrated in the
accelerator pedal actuator remains 100 °C
(212 °F) or more for 0.4 seconds or more
 The temperature of the motor drive circuit inte-
grated in the accelerator pedal actuator remains
120 °C (248 °F) or more for 0.4 seconds or more Accelerator pedal actuator integrated
motor malfunction
Revision: 2010 May2011 QX56

DAS
C1F06 CAN CIRCUIT2DAS-173
< DTC/CIRCUIT DIAGNOSIS > [DCA]
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C1F06 CAN CIRCUIT2
DTC LogicINFOID:0000000006223598
DTC DETECTION LOGIC
NOTE:
If DTC “C1F06” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to DAS-182,
"ACCELERATOR PEDAL ACTUATOR : 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 “C1F06” is detected as the current malfunction in “Self Diagnostic Result” of “ACCELE
PEDAL ACT”.
Is
“C1F06” detected as the current malfunction?
YES >> Refer to DAS-173, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006223599
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected other than “C1F06” in “Self Diagnostic Result” of “ACCELE PEDAL ACT”.
Is
“U1000” detected?
YES >> Perform the CAN communicati on system inspection. Repair or replace the malfunctioning parts.
Refer to DAS-182, "
ACCELERATOR PEDAL ACTUATOR : DTC Logic".
NO >> GO TO 2.
2.REPLACE ADAS CONTROL UNIT
1. Turn the ignition switch OFF.
2. Replace the ADAS control unit. Refer to DAS-63, "
Removal and Installation".
3. Erases All self-diagnosis results.
4. Perform “All DTC Reading” again.
5. Check if the “C1F06” is detected in self -diagnosis results of “ACCELE PEDAL ACT”.
Is
“C1F06” detected?
YES >> Replace the accelerator pedal assembly. Refer to DAS-213, "Exploded View".
NO >> INSPECTION END
DTC Trouble diagnosis name DTC detecting condition Possible causes
C1F06 CAN CIR 2 If accelerator pedal actuator detects an error
signal that is received from ADAS control unit
via ITS communication ADAS control unit
Revision: 2010 May2011 QX56

DAS-174
< DTC/CIRCUIT DIAGNOSIS >[DCA]
C1F07 CAN CIRCUIT1
C1F07 CAN CIRCUIT1
DTC LogicINFOID:0000000006223600
DTC DETECTION LOGIC
NOTE:
If DTC “C1F07” is detected along with DTC “U
1000”, first diagnose the DTC “U1000”. Refer to DAS-182,
"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 “C1F07” is detected as the current malfunction in “Self Diagnostic Result” of “ACCELE
PEDAL ACT”.
Is
“C1F07” detected as the current malfunction?
YES >> Refer to DAS-173, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006223601
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected other than “C1F07” in “Self Diagnostic Result” of “ACCELE PEDAL ACT”.
Is
“U1000” detected?
YES >> Perform the CAN communication system inspecti on. Repair or replace the malfunctioning parts.
Refer to DAS-182, "
ACCELERATOR PEDAL ACTUATOR : DTC Logic".
NO >> GO TO 2.
2.REPLACE ADAS CONTROL UNIT
1. Turn the ignition switch OFF.
2. Replace the ADAS control unit. Refer to DAS-63, "
Removal and Installation".
3. Erases All self-diagnosis results.
4. Perform “All DTC Reading” again.
5. Check if the “C1F07” is detected in self-diagnosis results of “ACCELE PEDAL ACT”.
Is
“C1F07” detected?
YES >> Replace the accelerator pedal assembly. Refer to DAS-213, "Exploded View".
NO >> INSPECTION END
DTC Trouble diagnosis name DTC detecting condition Possible causes
C1F07 CAN CIR 1 If accelerator pedal actuator detects an error
signal that is received from ADAS control unit
via ITS communication ADAS control unit
Revision: 2010 May2011 QX56

DAS-182
< DTC/CIRCUIT DIAGNOSIS >[DCA]
U1000 CAN COMM CIRCUIT
U1000 CAN COMM CIRCUIT
ADAS CONTROL UNIT
ADAS CONTROL UNIT : DescriptionINFOID:0000000006228145
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 communication 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 hi gh 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 system . This enables the system to transmit and receive
large quantities of data at high speed by connecting 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:0000000006228146
DTC DETECTION LOGIC
NOTE:
If “U1000” is detected, first diagnose the CAN communication system.
ADAS CONTROL UNIT : Diagnosis ProcedureINFOID:0000000006228147
1.PERFORM THE SELF-DIAGNOSIS
1. Turn the ignition switch ON.
2. Turn the DCA system ON, and then wait for 30 seconds or more.
3. Perform “All DTC Reading” 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".
ACCELERATOR PEDAL ACTUATOR
ACCELERATOR PEDAL ACTUATOR : DescriptionINFOID:0000000006223619
ITS COMMUNICATION
 ITS communication is a multiplex communication system . This enables the system to transmit and receive
large quantities of data at high speed by connecting control units with 2 communication lines
 ITS communication lines adopt twisted-pair line st yle (two lines twisted) for noise immunity.
ACCELERATOR PEDAL ACTUATOR : DTC LogicINFOID:0000000006223620
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

DAS
U1000 CAN COMM CIRCUITDAS-183
< DTC/CIRCUIT DIAGNOSIS > [DCA]
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ACCELERATOR PEDAL ACTUATOR : Diagnosis ProcedureINFOID:0000000006223621
1.PERFORM THE SELF-DIAGNOSIS
1. Turn the ignition switch ON.
2. Turn the DCA system ON, and then wait for 2 seconds or more.
3. Perform “All DTC Readi ng” with CONSULT-III.
4. Check if the “U1000” is detected as the current malfunction in “Self Diagnostic Result” of “ACCELE
PEDAL ACT”.
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 accelerator pedal actuator is not transmitting or
receiving ITS communication signal for 2 sec-
onds or more
ITS communication system
Revision: 2010 May2011 QX56

DAS
POWER SUPPLY AND GROUND CIRCUITDAS-195
< DTC/CIRCUIT DIAGNOSIS > [DCA]
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POWER SUPPLY AND GROUND CIRCUIT
ADAS CONTROL UNIT
ADAS CONTROL UNIT : Diagnosis ProcedureINFOID:0000000006223648
1.CHECK ADAS CONTROL UNIT POWER SUPPLY CIRCUIT
Check voltage between ADAS contro l unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the ADAS control unit power supply circuit.
2.CHECK ADAS CONTROL UNIT GROUND CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect the ADAS control unit connector.
3. Check for continuity between ADAS control unit harness connector and ground.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Repair the ADAS control unit ground circuit.
ACCELERATOR PEDAL ACTUATOR
ACCELERATOR PEDAL ACTUATOR : Diagnosis ProcedureINFOID:0000000006223649
1.CHECK FUSES
Check if any of the following fuses are blown:
Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace the blown fuse after repairing the affected circuit if a fuse is blown.
2.CHECK ACCELERATOR PEDAL ACTUATOR POWER SUPPLY CIRCUIT
Check voltage between accelerator pedal actuator harness connector and ground.
Te r m i n a l Condition
Vo l ta g e
(Approx.)
(+) (–)
ADAS control unit
GroundIgnition
switch
Connector Terminal
B61 16 OFF 0 V
ON Battery volt-
age
ADAS control unit
GroundContinuity
Connector Terminal
B61 6 Existed
Signal name Fuse No.
Battery power supply 33
Revision: 2010 May2011 QX56

DAS-196
< DTC/CIRCUIT DIAGNOSIS >[DCA]
POWER SUPPLY AND GROUND CIRCUIT
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair the accelerator pedal actuator power supply circuit.
3.CHECK ACCELERATOR PEDAL ACTUATOR GROUND CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect the accelerator pedal actuator connector.
3. Check for continuity between accelerator pedal actuator harness connector and ground.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Repair the accelerator pedal actuator ground circuit.
Te r m i n a l Condition
Voltag e
(Approx.)
(+) (–)
Accelerator pedal actuator
GroundIgnition
switch
Connector Terminal
E66 1OFF
Battery volt-
age
3ON
Accelerator pedal actuator
GroundContinuity
Connector Terminal
E66 2 Existed
Revision: 2010 May2011 QX56

DAS-200
< SYMPTOM DIAGNOSIS >[DCA]
DCA SYSTEM SETTINGS CANNOT BE TURNED ON/OFF ON THE NAVIGATION
SCREEN
DCA SYSTEM SETTINGS CANNOT BE TURNED ON/OFF ON THE NAVI-
GATION SCREEN
DescriptionINFOID:0000000006223653
 DCA system setting is not selectable on the navigation screen. NOTE:
When the ignition switch is in ACC posit ion, DCA system settings cannot be changed.
- “Distance Control Assist” is not indicated on the navigation screen.
- The switching between ON and OFF cannot be per formed by operating the navigation system.
- The item of “Distance Control Assist” on the navigation screen is not active.
 After turning ON the ignition switch or starting t he engine, DCA settings of the navigation system cannot be
selected for several tens of sec onds under the following conditions:
- After replacing AV control unit.
- After erasing connection histor y of the navigation system.
- After erasing self-diagnosis results.
 The DCA system setting differs from the one set at the previous driving. NOTE:
Turn OFF the ignition switch and wait for 5 seconds or more.
Diagnosis ProcedureINFOID:0000000006223654
1.CHECK DCA SYSTEM SETTING
1. Start the engine.
2. Check that the DCA syst em settings is selectable on the navigation screen.
Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 2.
2.PERFORM THE SELF-DIAGNOSIS
1. Perform “All DTC Reading” with CONSULT-III.
2. Check if the DTC is detected in self-diagnosis results of “ICC/ADAS”, “MULTI AV” and “METER/M&A”.
Refer to the following.
- ICC/ADAS: DAS-100, "
DTC Index"
- MULTI AV: AV-57, "DTC Index"
- METER/M&A: WCS-30, "DTC Index"
Is any DTC detected?
YES >> Repair or replace malfunctioning parts.
NO >> INSPECTION END
3.CHECK DATA MONITOR OF ADAS CONTROL UNIT
Check that “DCA SELECT” operates normally in “D ATA MONITOR” of “ICC/ADAS” with CONSULT-III.
Is the inspection result normal?
YES >> Refer to AV-28, "On Board Diagnosis Function".
NO >> GO TO 4.
4.CHECK MULTIFUNCTION SWITCH
Operate the multifunction switch to check that the audio, navigation system, and air conditioner operate prop-
erly.
Is the inspection result normal?
YES >> Replace the ADAS control unit. Refer to DAS-63, "Removal and Installation".
NO >> Repair or replace malfunctioning parts.
Revision: 2010 May2011 QX56

DAS
SYSTEM
DAS-219
< SYSTEM DESCRIPTION >[FCW]
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 The FCW system will function when own vehicle is dr iven at speeds of approximately 15 km/h (10 MPH) and
above.
NOTE:
The FCW system shares the di agnosis function with ICC system.
FUNCTION DESCRIPTION
The distance from the vehicle ahead and a relative speed are calculated by using the ICC sensor and an ICC
sensor signal is transmitted to t he ADAS control unit via ITS communi cation. When judging the necessity of
warning according to the received vehicle ahead detection signal, the ADAS control unit transmits a buzzer
output signal and meter display signal to the combination meter via CAN communication.
FCW Operating Condition
 Warning systems ON indicator: ON
 Vehicle speed: Approximately 15 km/h (10 MPH) and above.
Fail-safe Indication
FCW INITIAL STATE CHANGE
CAUTION:
Never change FCW initial state “ON” ⇒ “OFF” without the con sent of the customer.
FCW initial state can be changed.
 FCW initial ON* - FCW function is automatically turned ON, when the ignition switch OFF ⇒ ON.
 FCW initial OFF - FCW function is still OFF when the ignition switch OFF ⇒ ON.
*: Factory setting
How to change FCW/LDW/BSW initial state1. Turn ignition switch ON.
2. Warning systems switch is OFF.
3. Push and hold warning systems switch for more than 4 seconds.
4. Buzzer sounds and blinking of the warning systems ON indicator informs that the FCW/LDW/BSW initial
state change is completed.
Fail-safe (ADAS Control Unit)INFOID:0000000006223674
If a malfunction occurs in each s ystem, ADAS control unit cancels eac h control, sounds a beep, and turns ON
the warning lamp or indicator lamp.
Vehicle condition Indication on the combination meter
 When the FCW system malfunctions
 When the sensor window is dirty
 When driving into a strong light (i.e. sunlight)
NOTE:
Check that the IBA system is not OFF. The indicator lamp is shared
with IBA system.
JPOIA0179ZZ
System Buzzer Warning lamp/Indicator lamp Description
Vehicle-to-vehicle distance control mode High-pitched
toneICC system warning lamp Cancel
Conventional (fixed speed) cruise control mode High-pitched
toneICC system warning lamp Cancel
Intelligent Brake Assist (IBA) High-pitched
tone
IBA OFF indicator lamp Cancel
Forward Collision Warning (FCW) High-pitched
tone
IBA OFF indicator lamp Cancel
Distance Control Assist (DCA) High-pitched
toneICC system warning lamp Cancel
Lane Departure Warning (LDW) — Lane departure warning lamp Cancel
Revision: 2010 May2011 QX56