INFINITI QX56 2011 Factory Service Manual

DAS-156
< DTC/CIRCUIT DIAGNOSIS >[DCA]
C1A26 ECD MODE MALFUNCTION
C1A26 ECD MODE MALFUNCTION
DTC LogicINFOID:0000000006228094
DTC DETECTION LOGIC
NOTE:
If DTC “C1A26” is detected along with DTC “U1000”
, “U0415” or “U0121” first diagnose the DTC “U1000”,
“U0415” or “U0121”.
 DTC “U1000”: Refer to DAS-182, "
ADAS CONTROL UNIT : DTC Logic".
 DTC “U0415”: Refer to DAS-180, "
DTC Logic".
 DTC “U0121”: Refer to DAS-175, "
DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine.
2. Wait for approximately 1 minute after turning the DCA system ON.
3. Perform “All DTC Reading” with CONSULT-III.
4. Check if the “C1A26” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“C1A26” detected as the current malfunction?
YES >> Refer to DAS-156, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006228095
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000”, “U0415” or “U0121” is detected other than “C1A26” 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.PERFORM SELF-DIAGNOSIS OF ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
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 ADAS control unit. Refer to DAS-63, "
Removal and Installation".
DTC
(On board display) Trouble diagnosis name DTC detecting condition Possible cause
C1A26 (26) ECD MODE MALF If an abnormal condition occurs with ECD system ABS actuator and electric unit (control
unit)
Revision: 2010 May2011 QX56

DAS
C1A27 ECD POWER SUPPLY CIRCUITDAS-157
< DTC/CIRCUIT DIAGNOSIS > [DCA]
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C1A27 ECD POWER SUPPLY CIRCUIT
DTC LogicINFOID:0000000006228096
DTC DETECTION LOGIC
NOTE:
If DTC “C1A27” is detected along with DTC “U1000” , “U0415” or “U0121” first diagnose the DTC “U1000”,
“U0415” or “U0121”.
 DTC “U1000”: Refer to DAS-182, "
ADAS CONTROL UNIT : DTC Logic".
 DTC “U0415”: Refer to DAS-180, "
DTC Logic".
 DTC “U0121”: Refer to DAS-175, "
DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine.
2. Wait for approximately 1 minute af ter turning the DCA system ON.
3. Perform “All DTC Readi ng” with CONSULT-III.
4. Check if the “C1A27” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“C1A27” detected as the current malfunction?
YES >> Refer to DAS-157, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006228097
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000”, “U0415” or “U0121” is detected other than “C1A27” 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 POWER SUPPLY CIRCUIT OF ABS ACTU ATOR AND ELECTRIC UNIT (CONTROL UNIT)
Check power supply circuit of ABS actuator and electric unit (control unit). Refer to BRC-113, "
Diagnosis Pro-
cedure".
Is the inspection result normal?
YES >> Perform self-diagnosis of ABS actuator and electric unit (control unit). Refer to BRC-51, "DTC
Index".
NO >> Repair the harnesses or connectors.
DTC
(On board display) Trouble diagnosis name DTC detecting condition Possible cause
C1A27 (27) ECD PWR SUPLY CIR ECD system power supply voltage is excessively
low  ABS actuator and el
ectric unit (con-
trol unit) power supply circuit
 ABS actuator and el ectric unit (con-
trol unit)
Revision: 2010 May2011 QX56

DAS-158
< DTC/CIRCUIT DIAGNOSIS >[DCA]
C1A2A ICC SENSOR POWER SUPPLY CIRCUIT
C1A2A ICC SENSOR POWER SUPPLY CIRCUIT
DTC LogicINFOID:0000000006228098
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 Reading” with CONSULT-III.
4. Check if the “C1A2A” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“C1A2A” detected as the current malfunction?
YES >> Refer to DAS-158, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006228099
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected ot her than “C1A2A” 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-182, "
ADAS CONTROL UNIT : DTC Logic".
NO >> GO TO 2.
2.CHECK ICC SENSOR SELF-DIAGNOSIS
Check if any DTC is detected in “Self Diagnostic Result” of “LASER”.
Is any DTC detected?
YES >> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
CCS-55, "
DTC Index".
NO >> Replace ADAS control unit. Refer to DAS-63, "
Removal and Installation".
DTC
(On board display) Trouble diagnosis name DTC detecting condition Possible cause
C1A2A (80) ICC SEN PWR SUP CIR Abnormal powe
r supply voltage in ICC sensor Harness, connector, fuse
 ICC sensor
Revision: 2010 May2011 QX56

DAS
C1A33 CAN TRANSMISSION ERRORDAS-159
< DTC/CIRCUIT DIAGNOSIS > [DCA]
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C1A33 CAN TRANSMISSION ERROR
DTC LogicINFOID:0000000006228100
DTC DETECTION LOGIC
NOTE:
If DTC “C1A33” 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. Start the engine.
2. Turn the DCA system ON.
3. Perform “All DTC Readi ng” with CONSULT-III.
4. Check if the “C1A33” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“C1A33” detected as the current malfunction?
YES >> Refer to DAS-159, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006228101
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected other than “C1A33” 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 >> 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
C1A33 (33) CAN TRANSMISSION
ERR If an error occurs in the CAN communication
signal that ADAS control
unit transmits to ECMADAS control unit
Revision: 2010 May2011 QX56

DAS-160
< DTC/CIRCUIT DIAGNOSIS >[DCA]
C1A34 COMMAND ERROR
C1A34 COMMAND ERROR
DTC LogicINFOID:0000000006228102
DTC DETECTION LOGIC
NOTE:
If DTC “C1A34” 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. Operate the ICC system and drive. CAUTION:
Always drive safely.
3. Stop the vehicle.
4. Perform “All DTC Reading” with CONSULT-III.
5. Check if the “C1A34” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“C1A34” detected as the current malfunction?
YES >> Refer to DAS-160, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006228103
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected ot her than “C1A34” 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 DAS-182, "
ADAS CONTROL UNIT : 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
C1A34 (34) COMMAND ERROR If an error occurs in the command signal that
ADAS control unit transmits to ECM via CAN
communication
ADAS control unit
Revision: 2010 May2011 QX56

DAS
C1A35 ACCELERATOR PEDAL ACTUATORDAS-161
< DTC/CIRCUIT DIAGNOSIS > [DCA]
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C1A35 ACCELERATOR PEDAL ACTUATOR
DTC LogicINFOID:0000000006228104
DTC DETECTION LOGIC
NOTE:
If DTC “C1A35” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to DAS-182,
"ADAS CONTROL UNIT : DTC Logic".
Diagnosis ProcedureINFOID:0000000006228105
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 “C1A35” is detected as the current malfunction in self-diagnosis results of “ICC/ADAS”.
Is
“C1A35” detected as the current malfunction?
YES >> GO TO 2.
NO >> INSPECTION END
2.CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected other than “C1A35” 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 3.
3.CHECK ACCELERATOR PEDAL ACTU ATOR SELF-DIAGNOSIS RESULTS
Check if the DTC is detected in “Self Diagnostic Result” of “ACCELE PEDAL ACT”.
Is any DTC detected?
YES >> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
DAS-108, "
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
C1A35 (35) APA CIR
If the accelerator pedal actuator is malfunc-
tioning Accelerator pedal actuator
Revision: 2010 May2011 QX56

DAS-162
< DTC/CIRCUIT DIAGNOSIS >[DCA]
C1A36 ACCELERATOR PEDAL ACTUATOR CAN COMM
C1A36 ACCELERATOR PEDAL ACTUATOR CAN COMM
DTC LogicINFOID:0000000006228106
DTC DETECTION LOGIC
NOTE:
If DTC “C1A36” 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 “C1A36” is detected as the current malfunction in self-diagnosis results of “ICC/ADAS”.
Is
“C1A36” detected as the current malfunction?
YES >> Refer to DAS-162, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006228107
1.CHECK ADAS CONTROL UNIT SE LF-DIAGNOSIS RESULTS
Check if “U1000” is detected ot her than “C1A36” 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 DAS-182, "
ADAS CONTROL UNIT : DTC Logic".
NO >> GO TO 2.
2.CHECK ACCELERATOR PEDAL ACTUAT OR SELF-DIAGNOSIS RESULTS
Check if the DTC is detected in “Self Diagnostic Result” of “ACCELE PEDAL ACT”.
Is any DTC detected?
YES >> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
DAS-108, "
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
C1A36 (36) APA CAN COMM CIR If an error occurs in the signal that the accel-
erator pedal actuator transmits via ITS com-
munication  ADAS control unit
 Accelerator pedal actuator
 ITS communication system
Revision: 2010 May2011 QX56

DAS
C1A37 ACCELERATOR PEDAL ACTUATOR CAN 2DAS-163
< DTC/CIRCUIT DIAGNOSIS > [DCA]
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C1A37 ACCELERATOR PEDAL ACTUATOR CAN 2
DTC LogicINFOID:0000000006228113
DTC DETECTION LOGIC
NOTE:
If DTC “C1A37” 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. Start the engine.
2. Turn the DCA system ON.
3. Perform “All DTC Readi ng” 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 DAS-163, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006228114
1.CHECK ADAS CONTROL UNIT SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected other than “C1A37” 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.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

DAS-164
< DTC/CIRCUIT DIAGNOSIS >[DCA]
C1A38 ACCELERATOR PEDAL ACTUATOR CAN 1
C1A38 ACCELERATOR PEDAL ACTUATOR CAN 1
DTC LogicINFOID:0000000006228115
DTC DETECTION LOGIC
NOTE:
If DTC “C1A38” 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 “C1A38” is detected as the current malfunction in self-diagnosis results of “ICC/ADAS”.
Is
“C1A38” detected as the current malfunction?
YES >> Refer to DAS-164, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006228116
1.CHECK ADAS CONTROL UNIT SE LF-DIAGNOSIS RESULTS
Check if “U1000” is detected ot her than “C1A38” 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 DAS-182, "
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

DAS
C1A39 STEERING ANGLE SENSORDAS-165
< DTC/CIRCUIT DIAGNOSIS > [DCA]
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C1A39 STEERING ANGLE SENSOR
DTC LogicINFOID:0000000006228117
DTC DETECTION LOGIC
NOTE:
If DTC “C1A39” 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. Start the engine.
2. Turn the DCA system ON.
3. Perform “All DTC Readi ng” with CONSULT-III.
4. Check if the “C1A39” is detected as the current malfunction in self-diagnosis results of “ICC/ADAS”.
Is
“C1A39” detected as the current malfunction?
YES >> Refer to DAS-165, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006228118
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected other than “C1A39” 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 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".
DTC
(On board dis-
play) Trouble diagnosis name DTC detecting condition Possible causes
C1A39 (39) STRG SEN CIR If the steering angle sensor is malfunction Steering angle sensor
Revision: 2010 May2011 QX56