sensor INFINITI QX56 2011 Factory Service Manual

DAS
ICC SENSORDAS-105
< ECU DIAGNOSIS INFORMATION > [DCA]
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Fail-safeINFOID:0000000006228057
If a malfunction occurs in the ICC sensor, ADAS cont rol unit cancels control, sounds a beep, and turns ON the
ICC system warning lamp in the combination meter.
DTC Inspection Priority ChartINFOID:0000000006228058
If multiple DTCs are detected simultaneously, che ck them one by one depending on the following DTC inspec-
tion priority chart.
DTC IndexINFOID:0000000006228059
NOTE:
 The details of time display are as per the following.
- 0: The malfunctions that are detected now
CAN communication system (U1000, U1010)
- 1 - 39: It increases like 0 → 1 → 2 ··· 38 → 39 after returning to the normal condition whenever the ignition
switch OFF → ON. It returns to 0 when a malfunc tion is detected again in the process.
- If it is over 39, it is fixed to 39 unt il the self-diagnosis results are erased.
Other than CAN communication s ystem (Other than U1000, U1010)
- 1 - 49: It increases like 0 → 1 → 2 ··· 38 → 49 after returning to the normal condition whenever the ignition
switch OFF → ON. It returns to 0 when a malfunc tion is detected again in the process.
- If it is over 49, it is fixed to 49 unt il the self-diagnosis results are erased.
Te r m i n a l N o .
(Wire color) Description
ConditionVa l u e
(Approx.)
+ – Signal name Input/
Output
1
(W/G)
GroundIgnition power supply Input Ignition switch ON Battery voltage
3
(L) ITS communication-H — — —
4
(B) Ground — Ignition switch ON 0 V
6
(Y) ITS communication-L — — —
Priority Detected items (DTC)
1  U1000: CAN COMM CIRCUIT
 U1010: CONTROL UNIT (CAN)
2  C1A50: ADAS MALFUNCTION
3  C1A01: POWER SUPPLY CIR
 C1A02: POWER SUPPLY CIR 2
 C1A12: LASER BEAM OFFCNTR
 C1A16: RADAR STAIN
 C1A18: LASER AIMING INCMP
 C1A21: UNIT HIGH TEMP
 C1A39: STRG SEN CIR
 U0104: ADAS CAN CIR1
 U0121: VDC CAN CIR2
 U0126: STRG SEN CAN CIR1
 U0405: ADAS CAN CIR2
 U0415: VDC CAN CIR1
 U0428: STRG SEN CAN CIR2
4  C1A00: CONTROL UNIT
Revision: 2010 May2011 QX56

DAS-106
< ECU DIAGNOSIS INFORMATION >[DCA]
ICC SENSOR
×
: Applicable
DTC
CONSULT-III display
ICC system warning lamp
Fail-safe function Reference
CONSULT-III
Vehicle-to-vehicle distance control mode
Conventional (fixed speed) cruise control mode
Distance Control Assist (DCA)
Forward Collision Warning (FCW) Intelligent Brake Assist (IBA)
Brake Assist (with preview function)
C1A00 CONTROL UNIT ON ××××××CCS-83
C1A01 POWER SUPPLY CIR ON ××××××CCS-85
C1A02 POWER SUPPLY CIR2 ON ××××××CCS-85
C1A12 LASER BEAM OFFCNTR ON ×××××CCS-96
C1A16 RADAR STAIN ON ×××××CCS-106
C1A18 LASER AIMING INCMP ON ×××××CCS-109
C1A21 UNIT HIGH TEMP ON ××××××CCS-111
C1A39 STRG SEN CIR ON ××××××CCS-124
C1A50 ADAS MALFUNCTION ON ××××××CCS-128
U0104 ADAS CAN CIR1 ON ××××××CCS-132
U0121 VDC CAN CIR2 ON ××××××CCS-133
U0126 STRG SEN CAN CIR1 ON ××××××CCS-135
U0405 ADAS CAN CIR2 ON ××××××CCS-140
U0415 VDC CAN CIR1 ON ××××××CCS-141
U0428 STRG SEN CAN CIR2 ON ××××××CCS-143
U1000 CAN COMM CIRCUIT ON ××××××CCS-145
U1010 CONTROL UNIT (CAN) ON ××××××CCS-147
Revision: 2010 May2011 QX56

DAS-126
< BASIC INSPECTION >[DCA]
ADDITIONAL SERVICE WHEN
REPLACING ICC SENSOR
ADDITIONAL SERVICE WHEN REPLACING ICC SENSOR
DescriptionINFOID:0000000006223523
 Always perform the laser beam aiming adjustment after re moving and installing or replacing the ICC sensor.
CAUTION:
The system does not operate normally unless the laser beam aiming adjustment is performed.
Always perform it.
 Perform the DCA system action test check that the DCA system operates normally.
Work ProcedureINFOID:0000000006223524
1.LASER BEAM AIMING ADJUSTMENT
Adjust the laser beam aiming. Refer to CCS-72, "
Description".
>> GO TO 2.
2.DCA SYSTEM ACTION TEST
1. Perform the DCA system action test. Refer to DAS-128, "
Description".
2. Check that the DCA sy stem operates normally.
>> INSPECTION END
Revision: 2010 May2011 QX56

DAS
ADDITIONAL SERVICE WHEN REPLACING ACCELERATOR PEDAL ASSEM-
BLY
DAS-127
< BASIC INSPECTION > [DCA]
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ADDITIONAL SERVICE WHEN RE PLACING ACCELERATOR PEDAL AS-
SEMBLY
DescriptionINFOID:0000000006223525
 Always perform accelerator pedal released position learning when replacing the accelerator pedal assembly or disconnecting the accelerator pedal position sensor connector.
 Perform the DCA system action test check that the DCA system operates normally.
Work ProcedureINFOID:0000000006223526
1.ACCELERATOR PEDAL RELEASED POSITION LEARNING
Perform accelerator pedal released position learning. Refer to EC-146, "
Description".
>> GO TO 2.
2.DCA SYSTEM ACTION TEST
1. Perform the DCA system action test. Refer to DAS-128, "
Description".
2. Check that the DCA system operates normally.
>> INSPECTION END
Revision: 2010 May2011 QX56

DAS-128
< BASIC INSPECTION >[DCA]
ACTION TEST
ACTION TEST
DescriptionINFOID:0000000006223527
Always perform the DCA system action te
st to check that the system operates normally after replacing the ICC
sensor, replacing the accelerator pedal assemb ly, or repairing any DCA system malfunction.
CAUTION:
Perform the DCA system action test after checking that the ICC system operates normally because the
DCA system shares components with the ICC system.
Work ProcedureINFOID:0000000006223528
NOTE:
When the ICC system is set, the information display changes to the ICC system display.
1.ICC SYSTEM ACTION TEST
Perform the ICC system action test. Refer to CCS-77, "
Description".
>> GO TO 2.
2.CHECK DCA SYST EM SETTING
1. Start the engine.
2. After starting the engine wait for 30 seconds or more.
3. Check that the DCA syst em setting can be enabled/disabled on the navigation screen.
4. Turn OFF the ignition switch and wait for 5 seconds or more.
5. Check that the previous setting is saved when the engine starts again.
>> GO TO 3.
3.CHECK DYNAMIC DRIVER ASSISTANCE SWITCH
1. Start the engine.
2. After starting the engine wait for 30 seconds or more.
3. Enable the setting of the DCA system on the navigation screen.
4. Press the dynamic driver assistance switch (1).
5. Check that the DCA system switch indicator (2) on the informa- tion display illuminates.
6. Check that the DCA system switch indicator turns OFF when the system is turned OFF by pressing the dynamic driver assistance
switch.
7. Check that the DCA system switch indicator turns OFF when the engine starts again.
NOTE:
The DCA system switch indicato r does not illuminate even when the
dynamic driver assistance switch is turned ON within approximately
5 seconds after starting the engine.
If the accelerator pedal assembly is not replaced>>INSPECTION END
If the accelerator pedal assembly is replaced>>GO TO 4.
4.CHECK DCA SYSTEM OPERATION
Check that the accelerator pedal actuator operates by the “Active Test” items “ACCELERATOR PEDAL
ACTUATOR TEST1” and “ACCELERATOR PEDAL ACTU ATOR TEST2” of “ACCELE PEDAL ACT” with
CONSULT-III.
>> INSPECTION END
JSOIA0275ZZ
Revision: 2010 May2011 QX56

DAS
C1A03 VEHICLE SPEED SENSORDAS-131
< DTC/CIRCUIT DIAGNOSIS > [DCA]
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C1A03 VEHICLE SPEED SENSOR
DTC LogicINFOID:0000000006228063
DTC DETECTION LOGIC
NOTE:
If DTC “C1A03” is detected along with DTC “U1000” or “C1A04”, first diagnose the DTC “U1000” or “C1A04”.
 Refer to DAS-182, "
ADAS CONTROL UNIT : DTC Logic" for DTC “U1000”.
 Refer to DAS-133, "
DTC Logic" for DTC “C1A04”.
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine.
2. Turn the DCA system ON.
3. Drive the vehicle at 30 km/h (19 MPH) or more. CAUTION:
Always drive safely.
4. Stop the vehicle.
5. Perform “All DTC Readi ng” with CONSULT-III.
6. Check if the “C1A03” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“C1A03” detected as the current malfunction?
YES >> Refer to DAS-131, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006228064
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “C1A04” or “U1000” is detected other than “C1A03” in “Self 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
DAS-100, "
DTC Index".
NO >> GO TO 2.
2.CHECK DATA MONITOR
1. Start the engine.
2. Drive the vehicle.
3. Check that the value of “VHCL SPD AT” is almost the same as the value of “VHCL SPEED SE” in “DATA
MONITOR” of “ICC/ADAS”.
CAUTION:
Be careful of the vehicle speed.
Is the inspection result normal?
YES >> Replace the ADAS control unit. Refer to DAS-63, "Removal and Installation".
NO >> GO TO 3.
3.CHECK TCM SELF-DIAGNOSIS RESULTS
1. Perform “All DTC Reading”.
2. Check if any DTC is detected in “Sel f Diagnostic Result” of “TRANSMISSION”.
DTC
(On board
display) Trouble diagnosis
name DTC detecting condition Possible causes
C1A03 (3) VHCL SPEED SE
CIRC If the vehicle speed signal (wheel speed) from
ABS actuator and electric unit (control unit) and
the A/T vehicle speed sensor signal (output
shaft revolution signal) from TCM, received by
the ADAS control unit via CAN communication,
are inconsistent  Wheel speed sensor
 ABS actuator and electric unit (control
unit)
 Vehicle speed sensor A/T (output speed sensor)
TCM
 ADAS control unit
Revision: 2010 May2011 QX56

DAS-132
< DTC/CIRCUIT DIAGNOSIS >[DCA]
C1A03 VEHICLE SPEED SENSOR
Is any DTC detected?
YES >> Perform diagnosis on the detected DTC and repair
or replace the malfunctioning parts. Refer to
TM-78, "
DTC Index".
NO >> GO TO 4.
4.CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL 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".
Revision: 2010 May2011 QX56

DAS-140
< DTC/CIRCUIT DIAGNOSIS >[DCA]
C1A12 LASER BEAM OFF CENTER
C1A12 LASER BEAM OFF CENTER
DTC LogicINFOID:0000000006228074
DTC DETECTION LOGIC
Diagnosis ProcedureINFOID:0000000006228075
1.CHECK ICC SENSOR SELF-DIAGNOSIS RESULTS
1. Perform “All DTC Reading” with CONSULT-III.
2. Check if the “C1A12” is detected as the current malfunction in “Self Diagnostic Result” of “LASER”.
Is
“C1A12” detected?
YES >> Refer to CCS-96, "ICC SENSOR : DTC Logic".
NO >> GO TO 2.
2.CHECK ADAS CONTROL SELF-DIAGNOSIS RESULTS
Check if the “C1A12” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“C1A12” detected?
YES >> Replace 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
C1A12 (12) LASER BEAM OFFCNTR
Laser beam of ICC sensor is off the aiming
point Laser beam is off the aiming point
Revision: 2010 May2011 QX56

DAS
C1A13 STOP LAMP RELAYDAS-141
< DTC/CIRCUIT DIAGNOSIS > [DCA]
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C1A13 STOP LAMP RELAY
DTC LogicINFOID:0000000006228076
DTC DETECTION LOGIC
NOTE:
If DTC “C1A13” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to DAS-182,
"ADAS CONTROL UNIT : DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE (1)
1. Start the engine.
2. Perform the active test item “STOP LAMP” with CONSULT-III.
3. Perform “All DTC Reading”.
4. Check if the “C1A13” is detected as the current malfunction in the “Self Diagnostic Result” of “ICC/ADAS”.
Is
“C1A13” detected as the current malfunction?
YES >> Refer to DAS-141, "Diagnosis Procedure".
NO >> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE (2)
1. Drive at the vehicle speed of 40 km/h (25 MPH) or more for approximately 60 seconds or more without the
brake pedal depressed.
CAUTION:
Always drive safely.
NOTE:
If it is outside the above condition, repeat step 1.
2. Perform “All DTC Reading”.
3. Check if the “C1A13” is detected as the current malfunction in the “Self Diagnostic Result” of “ICC/ADAS”.
Is
“C1A13” detected as the current malfunction?
YES >> Refer to DAS-141, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006228077
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected other than “C1A13” 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 DAS-182, "
ADAS CONTROL UNIT : DTC Logic".
NO >> GO TO 2.
2.CHECK STOP LAMP SWITCH
Check that “STOP LAMP SW” operate normally in “DATA MONITOR” of “ICC/ADAS”.
DTC
(On board dis-
play) Trouble diagnosis name DTC detecting condition Possible causes
C1A13 (13) STOP LAMP RLY FIX  Stop lamp inactive state continues for 0.3
seconds or more despite the outputting of
an ICC sensor ICC brake hold relay drive
signal
 The stop lamp remains ON for 60 seconds or more under the following conditions:
- Driving at 40 km/h or more
- No stop lamp drive signal output from ICC
sensor
- No brake operation  Stop lamp switch circuit
 ICC brake switch circuit
 ICC brake hold relay circuit
 Stop lamp switch
 ICC brake switch
 ICC brake hold relay
 Incorrect stop lamp switch installation
 Incorrect ICC brake switch installation
ECM
 ABS actuator and elec
tric unit (control
unit)
Revision: 2010 May2011 QX56

DAS
C1A14 ECMDAS-147
< DTC/CIRCUIT DIAGNOSIS > [DCA]
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C1A14 ECM
DTC LogicINFOID:0000000006228079
DTC DETECTION LOGIC
NOTE:
If DTC “C1A14” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to DAS-182,
"ADAS CONTROL UNIT : DTC Logic".
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine.
2. Operate the ICC system and drive. CAUTION:
Always drive safely.
3. Stop the vehicle.
4. Perform “All DTC Readi ng” with CONSULT-III.
5. Check if the “C1A14” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“C1A14” detected as the current malfunction?
YES >> Refer to DAS-147, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006228080
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected other than “C1A14” 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 DAS-182, "
ADAS CONTROL UNIT : DTC Logic".
NO >> GO TO 2.
2.PERFORM SELF-DIAGNOSIS OF ECM
Check if any DTC is detected in “S elf Diagnostic Result” of “ENGINE”.
Is any DTC detected?
YES >> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
EC-98, "
DTC Index".
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
C1A14 (14) ECM CIRCUIT If ECM is malfunctioning  Accelerator pedal position sensor
ECM
 ADAS control unit
Revision: 2010 May2011 QX56