INFINITI QX56 2011 Factory Service Manual

DAS-476
< DTC/CIRCUIT DIAGNOSIS >[BSW]
C1A24 NP RANGE
4.PERFORM TCM SELF-DIAGNOSIS
1. Perform “All DTC Reading”.
2. 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".
Revision: 2010 May2011 QX56

DAS
C1A39 STEERING ANGLE SENSORDAS-477
< DTC/CIRCUIT DIAGNOSIS > [BSW]
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C1A39 STEERING ANGLE SENSOR
DTC LogicINFOID:0000000006228229
DTC DETECTION LOGIC
NOTE:
If DTC “C1A39” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to DAS-486,
"ADAS CONTROL UNIT : DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine.
2. Turn the BSW 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-477, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006228230
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-486, "
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

DAS-478
< DTC/CIRCUIT DIAGNOSIS >[BSW]
C1B50 SIDE RADAR MALFUNCTION
C1B50 SIDE RADA
R MALFUNCTION
DTC LOGICINFOID:0000000006223893
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine.
2. Perform “All DTC Reading” with CONSULT-III.
3. Check if the “C1B50” is detected as the current malfunction in “Self Diagnostic Result” of “SIDE RADAR
RIGHT/LEFT”.
Is the
“C1B50” detected as the current malfunction?
YES >> Refer to DAS-478, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006223894
1.CHECK SELF-DIAGNOSIS RESULT
Check if any DTC other than “C1B50” is detected in “Self Diagnostic Result” of “SIDE RADAR LEFT/RIGHT”
Is any DTC detected?
YES >> Perform diagnosis on the detected DTC and repair or replace the malfunction part. Refer to DAS-
447, "DTC Index" (SIDE RADAR RIGHT) or DAS-445, "DTC Index" (SIDE RADAR LEFT).
NO >> Replace the side radar. Refer to DAS-523, "
Removal and Installation".
DTC Trouble diagnosis name DTC detecting condition Possible causes
C1B50 SIDE RDR MALFUNC-
TION Side radar malfunction Side radar
Revision: 2010 May2011 QX56

DAS
C1B51 BSW/BSI INDICATOR SHORT CIRCUITDAS-479
< DTC/CIRCUIT DIAGNOSIS > [BSW]
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C1B51 BSW/BSI INDICATOR SHORT CIRCUIT
DTC LogicINFOID:0000000006223895
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine.
2. Perform “All DTC Readi ng” with CONSULT-III.
3. Check if the “C1B51” is detected as the current malfunction in “Self Diagnostic Result” of “SIDE RADAR
RIGHT/LEFT”.
Is the
“C1B51” detected as the current malfunction?
YES >> Refer to DAS-479, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006223896
1.CHECK BSW INDICATOR CIRCUIT FOR SHORT
1. Turn ignition switch OFF.
2. Disconnect side radar harness connector and BSW indicator harness connector.
3. Check continuity between side radar harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the harnesses or connectors.
2.REPLACE THE SIDE RADAR
1. Replace the side radar.
2. Perform “All DTC Reading” with CONSULT-III.
3. Check if the “C1B51” is detected in “Self Diagnostic Result” of “SIDE RADAR RIGHT/LEFT”
Is the DTC
“C1B51” detected?
YES >> Replace the side radar. Refer to DAS-523, "Removal and Installation".
NO >> INSPECTION END
DTC Trouble diagnosis name DTC detecting condition Possible cause
C1B51 BSW/BSI IND SHORT CIR Short circuit in BSW indicator
circuit is detected. (Over cur-
rent is detected)  BSW indicator circuit
 BSW indicator
 Side radar
Side radar
GroundContinuity
Connector Terminal
B74 (LH) 6Not existed
B243 (RH)
Revision: 2010 May2011 QX56

DAS-480
< DTC/CIRCUIT DIAGNOSIS >[BSW]
C1B52 BSW/BSI INDI
CATOR OPEN CIRCUIT
C1B52 BSW/BSI INDICATOR OPEN CIRCUIT
DTC LogicINFOID:0000000006223897
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine.
2. Turn the BSW system ON.
3. Perform “All DTC Reading” with CONSULT-III.
4. Check if the “C1B52” is detected as the current malfunction in “Self Diagnostic Result” of “SIDE RADAR
RIGHT/LEFT”.
Is the
“C1B52” detected as the current malfunction?
YES >> Refer to DAS-480, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006223898
1.CHECK BSW INDICATOR CIRCUIT FOR OPEN 1
1. Turn ignition switch OFF.
2. Disconnect side radar harness connecto r and BSW indicator harness connector.
3. Check continuity between side radar harnes s connector and BSW indicator harness connector.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the harnesses or connectors.
2.CHECK BSW INDICATOR CIRCUIT FOR OPEN 2
Check continuity between BSW indicator harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair the harnesses or connectors.
3.CHECK SIDE RADAR VOLTAGE OUTPUT
1. Connect side radar harness connector.
2. Check voltage between BSW indicator harness connector and ground.
DTC Trouble diagnosis name DTC detecting condition Possible cause
C1B52 BSW/BSI IND OPEN CIR Open circuit in BSW indicator circuit is detected.  BSW indicator circuit
 BSW indicator
 Side radar
Side radar BSW indicator
Continuity
Connector Terminal Connector Terminal B74 (LH) 6 D73 (LH)
1Existed
B243 (RH) D74 (RH)
BSW indicator
GroundContinuity
Connector Terminal
D73 (LH) 4Existed
D74 (RH)
Revision: 2010 May2011 QX56

DAS
C1B52 BSW/BSI INDICATOR OPEN CIRCUITDAS-481
< DTC/CIRCUIT DIAGNOSIS > [BSW]
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N P AIs the inspection result normal?
YES >> Replace BSW indicator.
NO >> Replace side radar. Refer to DAS-523, "
Removal and Installation".
BSW indicator
GroundCondition
Vol tag e
(Approx.)
Connector Terminal
D73 (LH) 1 Ignition switch
OFF
⇒ ON
(Approx. 2 sec.) 6 V
D74 (RH)
Revision: 2010 May2011 QX56

DAS-482
< DTC/CIRCUIT DIAGNOSIS >[BSW]
C1B53 SIDE RADAR RIGHT MALFUNCTION
C1B53 SIDE RADAR
RIGHT MALFUNCTION
DTC LogicINFOID:0000000006223899
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine.
2. Turn the BSW system ON.
3. Perform “All DTC Reading” with CONSULT-III.
4. Check if the “C1B53” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“C1B53” detected as the current malfunction?
YES >> Refer to DAS-482, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006223900
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected ot her than “C1B53” 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-486, "
ADAS CONTROL UNIT : DTC Logic".
NO >> GO TO 2.
2.CHECK SELF-DIAGNOSIS RESULTS
Check if any DTC is detected in “Self Diagnostic Result” of “SIDE RADAR RIGHT”.
Is any DTC detected?
YES >> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
DAS-447, "
DTC Index" (SIDE RADAR RIGHT).
NO >> Replace the ADAS control unit. Refer to DAS-63, "
Removal and Installation".
DTC
(On board display) Trouble diagnosis name DTC detecting condition Possible cause
C1B53 (84) SIDE RDR R MALF ADAS control unit detects that side radar RH has
a malfunction. Side radar RH
Revision: 2010 May2011 QX56

DAS
C1B54 SIDE RADAR LEFT MALFUNCTIONDAS-483
< DTC/CIRCUIT DIAGNOSIS > [BSW]
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C1B54 SIDE RADAR LEFT MALFUNCTION
DTC LogicINFOID:0000000006223901
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine.
2. Turn the BSW system ON.
3. Perform “All DTC Reading” with CONSULT-III.
4. Check if the “C1B54” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“C1B54” detected as the current malfunction?
YES >> Refer to DAS-483, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006223902
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected other than “C1B54” 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-486, "
ADAS CONTROL UNIT : DTC Logic".
NO >> GO TO 2.
2.CHECK SELF-DIAGNOSIS RESULTS
Check if any DTC is detected in “Self Diagnostic Result” of “SIDE RADAR LEFT”.
Is any DTC detected?
YES >> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
DAS-445, "
DTC Index" (SIDE RADAR LEFT).
NO >> Replace the ADAS control unit. Refer to DAS-63, "
Removal and Installation".
DTC
(On board display) Trouble diagnosis name DTC detecting condition Possible cause
C1B54 (85) SIDE RDR L MALF ADAS control unit detects that side radar LH has
a malfunction. Side radar LH
Revision: 2010 May2011 QX56

DAS-484
< DTC/CIRCUIT DIAGNOSIS >[BSW]
C1B55 RADAR BLOCKAGE
C1B55 RADAR BLOCKAGE
DTC LogicINFOID:0000000006223903
DTC DETECTION LOGIC
NOTE:
DTC “C1B55” may be detected under the following conditions except for possible cause. (Explain to the customer about the differ
ence
between the contamination detection function and the indication when the malfunction is detected and tell them “This is not mal func-
tion”.)
 The side radar may be blocked by temporary ambient conditions such as splashing water, mist or fog.
 The blocked condition may also be caused by objects such as ice, frost or dirt obstructing the side radar.
 Due to the nature of radar technology it is possible to get a blockage warning and not actually be blocked. This is rare and i s known as
a false blockage warning. A false blocked condition either self-clears or clears after an ignition cycle.
Diagnosis ProcedureINFOID:0000000006223904
1.CHECK THE REAR BUMPER
Check rear bumper near the side radar contaminated with foreign materials.
>> GO TO 2.
2.CHECK THE SIDE RADAR
Check side radar and the side radar outskirts contaminated with foreign materials.
>> GO TO 3.
3.CHECK THE SIDE RADAR INSTALL CONDITION
Check side radar installation condition (installati on position, properly tightened, a bent bracket).
>> GO TO 4.
4.INTERVIEW
1. Ask if there is stain or foreign materials.
2. Ask if there is any temporary ambient condi tion such as splashing water, mist or fog.
3. Ask if there is any object such as ice, frost or dirt obstructing the side radar.
Is any of above conditions seen?
YES >> Explain to the customer about the differ ence between the blockage detection function and the
indication when the malfunction is detected and tell them “This is not malfunction”.
NO >> INSPECTION END
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
C1B55 RADAR BLOCKAGE Sid e radar is blocked. Stain or foreign materials is deposit-
ed.
Revision: 2010 May2011 QX56

DAS
U1000 CAN COMM CIRCUITDAS-485
< DTC/CIRCUIT DIAGNOSIS > [BSW]
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U1000 CAN COMM CIRCUIT
SIDE RADAR LH
SIDE RADAR LH : DescriptionINFOID:0000000006223905
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 communicati on 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 high 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 syste m. This enables the system to transmit and receive
large quantities of data at high speed by connec ting control units with 2 communication lines.
 ITS communication lines adopt twisted-pair line st yle (two lines twisted) for noise immunity.
SIDE RADAR LH : DTC LogicINFOID:0000000006223906
DTC DETECTION LOGIC
SIDE RADAR LH : Diagnosis ProcedureINFOID:0000000006223907
1.PERFORM THE SELF-DIAGNOSIS
1. Start the engine.
2. Turn the BSW 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 “SIDE RADAR
LEFT”.
Is
“U1000” detected as the current malfunction?
YES >> Refer to LAN-18, "Trouble Diagnosis Flow Chart".
NO >> Refer to GI-40, "
Intermittent Incident".
SIDE RADAR RH
SIDE RADAR RH : DescriptionINFOID:0000000006223908
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 communicati on 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 high 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 syste m. This enables the system to transmit and receive
large quantities of data at high speed by connec ting control units with 2 communication lines.
 ITS communication lines adopt twisted-pair line st yle (two lines twisted) for noise immunity.
DTC Trouble diagnosis name DTC detecting condition Possible causes
U1000 CAN COMM CIRCUIT If Side radar LH is not transmitting or receiving ITS
communication signal for 2 seconds or more ITS communication system
Revision: 2010 May2011 QX56