Page 1137 of 5598
DAS-172
< DTC/CIRCUIT DIAGNOSIS >[DCA]
C1F05 ACCELERATOR PEDAL ACTUATOR POWER SUPPLY CIRCUIT
4. Check if the “C1F05” is detected as the current
malfunction on the self-diagnosis results of “ACCELE
PEDAL ACT”.
Is
“C1F05” detected as the current malfunction?
YES >> Refer to DAS-172, "ACCELERATOR PEDAL ACTUATOR : Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
ACCELERATOR PEDAL ACTUATOR : Diagnosis ProcedureINFOID:0000000006223597
1.CHECK POWER SUPPLY CIRCUIT
Check the accelerator pedal actuator power supply circuit. Refer to DAS-195, "
ACCELERATOR PEDAL
ACTUATOR : Diagnosis Procedure".
Is the inspection result normal?
YES >> Replace the accelerator pedal assembly. Refer to DAS-213, "Exploded View".
NO >> Repair or replace the malfunctioning parts.
Revision: 2010 May2011 QX56
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![INFINITI QX56 2011 Factory Service Manual
DAS
C1F06 CAN CIRCUIT2DAS-173
< DTC/CIRCUIT DIAGNOSIS > [DCA]
C
D
E
F
G H
I
J
K L
M B
N P A
C1F06 CAN CIRCUIT2
DTC LogicINFOID:0000000006223598
DTC DETECTION LOGIC
NOTE:
If DTC “C1F06” is detecte INFINITI QX56 2011 Factory Service Manual
DAS
C1F06 CAN CIRCUIT2DAS-173
< DTC/CIRCUIT DIAGNOSIS > [DCA]
C
D
E
F
G H
I
J
K L
M B
N P A
C1F06 CAN CIRCUIT2
DTC LogicINFOID:0000000006223598
DTC DETECTION LOGIC
NOTE:
If DTC “C1F06” is detecte](/manual-img/42/57033/w960_57033-1137.png)
DAS
C1F06 CAN CIRCUIT2DAS-173
< DTC/CIRCUIT DIAGNOSIS > [DCA]
C
D
E
F
G H
I
J
K L
M B
N P A
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
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![INFINITI QX56 2011 Factory Service Manual
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”, fir INFINITI QX56 2011 Factory Service Manual
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”, fir](/manual-img/42/57033/w960_57033-1138.png)
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
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![INFINITI QX56 2011 Factory Service Manual
DAS
U0121 VDC CAN 2DAS-175
< DTC/CIRCUIT DIAGNOSIS > [DCA]
C
D
E
F
G H
I
J
K L
M B
N P A
U0121 VDC CAN 2
DTC LogicINFOID:0000000006228131
DTC DETECTION LOGIC
NOTE:
If DTC “U0121” is detected alon INFINITI QX56 2011 Factory Service Manual
DAS
U0121 VDC CAN 2DAS-175
< DTC/CIRCUIT DIAGNOSIS > [DCA]
C
D
E
F
G H
I
J
K L
M B
N P A
U0121 VDC CAN 2
DTC LogicINFOID:0000000006228131
DTC DETECTION LOGIC
NOTE:
If DTC “U0121” is detected alon](/manual-img/42/57033/w960_57033-1139.png)
DAS
U0121 VDC CAN 2DAS-175
< DTC/CIRCUIT DIAGNOSIS > [DCA]
C
D
E
F
G H
I
J
K L
M B
N P A
U0121 VDC CAN 2
DTC LogicINFOID:0000000006228131
DTC DETECTION LOGIC
NOTE:
If DTC “U0121” 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 Readi ng” with CONSULT-III.
4. Check if the “U0121” is detected as the current ma lfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“U0121” detected as the current malfunction?
YES >> Refer to DAS-175, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006228132
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected other than “U0121” 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
U0121 (127) VDC CAN CIR2 If ADAS control unit detects an error signal
that is received from
ABS actuator and electric
unit (control unit) via CAN communication ABS actuator and electric unit (control
unit)
Revision: 2010 May2011 QX56
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![INFINITI QX56 2011 Factory Service Manual
DAS-176
< DTC/CIRCUIT DIAGNOSIS >[DCA]
U0126 STRG SEN CAN 1
U0126 STRG SEN CAN 1
DTC LogicINFOID:0000000006228133
DTC DETECTION LOGIC
NOTE:
If DTC “U0126” is detected along with DTC “U
1000”, INFINITI QX56 2011 Factory Service Manual
DAS-176
< DTC/CIRCUIT DIAGNOSIS >[DCA]
U0126 STRG SEN CAN 1
U0126 STRG SEN CAN 1
DTC LogicINFOID:0000000006228133
DTC DETECTION LOGIC
NOTE:
If DTC “U0126” is detected along with DTC “U
1000”,](/manual-img/42/57033/w960_57033-1140.png)
DAS-176
< DTC/CIRCUIT DIAGNOSIS >[DCA]
U0126 STRG SEN CAN 1
U0126 STRG SEN CAN 1
DTC LogicINFOID:0000000006228133
DTC DETECTION LOGIC
NOTE:
If DTC “U0126” 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 “U0126” is detected as the current ma lfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“U0126” detected as the current malfunction?
YES >> Refer to DAS-176, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006228134
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected ot her than “U0126” 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 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".
DTC
(On board dis-
play) Trouble diagnosis name DTC detecting condition Possible causes
U0126 (130) STRG SEN CAN CIR1 If ADAS control unit detects an error signal
that is received from steering angle sensor via
CAN communication
Steering angle sensor
Revision: 2010 May2011 QX56
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![INFINITI QX56 2011 Factory Service Manual
DAS
U0235 ICC SENSOR CAN 1DAS-177
< DTC/CIRCUIT DIAGNOSIS > [DCA]
C
D
E
F
G H
I
J
K L
M B
N P A
U0235 ICC SENSOR CAN 1
DTC LogicINFOID:0000000006228135
DTC DETECTION LOGIC
NOTE:
If DTC “U0235” is INFINITI QX56 2011 Factory Service Manual
DAS
U0235 ICC SENSOR CAN 1DAS-177
< DTC/CIRCUIT DIAGNOSIS > [DCA]
C
D
E
F
G H
I
J
K L
M B
N P A
U0235 ICC SENSOR CAN 1
DTC LogicINFOID:0000000006228135
DTC DETECTION LOGIC
NOTE:
If DTC “U0235” is](/manual-img/42/57033/w960_57033-1141.png)
DAS
U0235 ICC SENSOR CAN 1DAS-177
< DTC/CIRCUIT DIAGNOSIS > [DCA]
C
D
E
F
G H
I
J
K L
M B
N P A
U0235 ICC SENSOR CAN 1
DTC LogicINFOID:0000000006228135
DTC DETECTION LOGIC
NOTE:
If DTC “U0235” 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 Readi ng” with CONSULT-III.
4. Check if the “U0235” is detected as the current ma lfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“U0235” detected as the current malfunction?
YES >> Refer to DAS-177, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006228136
1.CHECK ADAS CONTROL UNIT SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected other than “U0235” 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 ICC SENSOR SELF-DIAGNOSIS RESULTS
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 the ADAS control unit. Refer to DAS-63, "
Removal and Installation".
DTC
(On board dis-
play) Trouble diagnosis name DTC detecting condition Possible causes
U0235 (144) ICC SENSOR CAN
CIR1 If ADAS control unit detects an error signal
that is received from ICC sensor via ITS com-
munication
ICC sensor
Revision: 2010 May2011 QX56
Page 1143 of 5598
![INFINITI QX56 2011 Factory Service Manual
DAS-178
< DTC/CIRCUIT DIAGNOSIS >[DCA]
U0401 ECM CAN 1
U0401 ECM CAN 1
DTC LogicINFOID:0000000006228137
DTC DETECTION LOGIC
NOTE:
If DTC “U0401” is detected along with DTC “U
1000”, first dia INFINITI QX56 2011 Factory Service Manual
DAS-178
< DTC/CIRCUIT DIAGNOSIS >[DCA]
U0401 ECM CAN 1
U0401 ECM CAN 1
DTC LogicINFOID:0000000006228137
DTC DETECTION LOGIC
NOTE:
If DTC “U0401” is detected along with DTC “U
1000”, first dia](/manual-img/42/57033/w960_57033-1142.png)
DAS-178
< DTC/CIRCUIT DIAGNOSIS >[DCA]
U0401 ECM CAN 1
U0401 ECM CAN 1
DTC LogicINFOID:0000000006228137
DTC DETECTION LOGIC
NOTE:
If DTC “U0401” 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 “U0401” is detected as the current ma lfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“U0401” detected as the current malfunction?
YES >> Refer to DAS-178, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006228138
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected ot her than “U0401” 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 ECM SELF-DIAGNOSIS RESULTS
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
display) Trouble diagnosis name DTC detecting condition Possible causes
U0401 (120) ECM CAN CIR1 If ADAS control unit detects an error signal
that is received from ECM via CAN communi-
cation
ECM
Revision: 2010 May2011 QX56
Page 1144 of 5598
![INFINITI QX56 2011 Factory Service Manual
DAS
U0402 TCM CAN 1DAS-179
< DTC/CIRCUIT DIAGNOSIS > [DCA]
C
D
E
F
G H
I
J
K L
M B
N P A
U0402 TCM CAN 1
DTC LogicINFOID:0000000006228139
DTC DETECTION LOGIC
NOTE:
If DTC “U0402” is detected alon INFINITI QX56 2011 Factory Service Manual
DAS
U0402 TCM CAN 1DAS-179
< DTC/CIRCUIT DIAGNOSIS > [DCA]
C
D
E
F
G H
I
J
K L
M B
N P A
U0402 TCM CAN 1
DTC LogicINFOID:0000000006228139
DTC DETECTION LOGIC
NOTE:
If DTC “U0402” is detected alon](/manual-img/42/57033/w960_57033-1143.png)
DAS
U0402 TCM CAN 1DAS-179
< DTC/CIRCUIT DIAGNOSIS > [DCA]
C
D
E
F
G H
I
J
K L
M B
N P A
U0402 TCM CAN 1
DTC LogicINFOID:0000000006228139
DTC DETECTION LOGIC
NOTE:
If DTC “U0402” 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 Readi ng” with CONSULT-III.
4. Check if the “U0402” is detected as the current ma lfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“U0402” detected as the current malfunction?
YES >> Refer to DAS-179, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006228140
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected other than “U0402” 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 TCM SELF-DIAGNOSIS RESULTS
Check if any DTC is detected in “Sel f Diagnostic Result” of “TRANSMISSION”.
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 >> 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
U0402 (122) TCM CAN CIRC1 If ADAS control unit detects an error signal
that is received from TCM via CAN communi-
cation
TCM
Revision: 2010 May2011 QX56