2011 INFINITI QX56 Factory Service Manual

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Page 1089 of 5598

INFINITI QX56 2011 Factory Service Manual
DAS-124
< BASIC INSPECTION >[DCA]
DIAGNOSIS AND REPAIR WORK FLOW
BASIC INSPECTION
DIAGNOSIS AND REPAIR WORK FLOW
Work FlowINFOID:0000000006223522
OVERALL SEQUENCE
DETAILED FLOW
1.INTERVIEW FOR MALFUN

Page 1090 of 5598

INFINITI QX56 2011 Factory Service Manual
DAS
DIAGNOSIS AND REPAIR WORK FLOWDAS-125
< BASIC INSPECTION > [DCA]
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NOTE:
The customers are not professionals. Never assume t hat “maybe the customer means···” o

Page 1091 of 5598

INFINITI QX56 2011 Factory Service Manual
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

Page 1092 of 5598

INFINITI QX56 2011 Factory Service Manual
DAS
ADDITIONAL SERVICE WHEN REPLACING ACCELERATOR PEDAL ASSEM-
BLY
DAS-127
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ADDITIONAL SERVICE WHEN RE PLACING ACCELERATOR PEDAL AS-
SEMBLY
Des

Page 1093 of 5598

INFINITI QX56 2011 Factory Service Manual
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

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

Page 1094 of 5598

INFINITI QX56 2011 Factory Service Manual
DAS
C1A00 CONTROL UNITDAS-129
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DTC/CIRCUIT DIAGNOSIS
C1A00 CONTROL UNIT
DTC LogicINFOID:0000000006223529
DTC DETECTION LOGIC
DTC CONFIRMAT

Page 1095 of 5598

INFINITI QX56 2011 Factory Service Manual
DAS-130
< DTC/CIRCUIT DIAGNOSIS >[DCA]
C1A01 POWER SUPPLY CIRCUIT 1,
C1A02 POWER SUPPLY CIRCUIT 2
C1A01 POWER SUPPLY CIRCUIT 1, C1A02 POWER SUPPLY CIRCUIT 2
DTC LogicINFOID:0000000006223531
DTC DET

Page 1096 of 5598

INFINITI QX56 2011 Factory Service Manual
DAS
C1A03 VEHICLE SPEED SENSORDAS-131
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C1A03 VEHICLE SPEED SENSOR
DTC LogicINFOID:0000000006228063
DTC DETECTION LOGIC
NOTE:
If DTC “C1A

DAS
C1A03 VEHICLE SPEED SENSORDAS-131
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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

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