air condition INFINITI QX56 2011 Factory Service Manual

DAS-468
< BASIC INSPECTION >[BSW]
ACTION TEST
ACTION TEST
DescriptionINFOID:0000000006223878
Always perform the BSW system action test to check
that the system operates normally after replacing the
side radar LH/RH, or repairing any BSW system malfunction.
WARNING:
Be careful of traffic conditions and safety ar ound the vehicle when performing road test.
CAUTION:
Fully understand the following it ems well before the road test;
 Precautions: Refer to DAS-407, "
Precaution for BSW System Service".
 System description: Refer to DAS-410, "
System Description".
 Normal operating condition: Refer to DAS-522, "
Description".
Work ProcedureINFOID:0000000006223879
WARNING:
Be careful of traffic conditions and safety ar ound the vehicle when performing road test.
CAUTION:
Fully understand the following it ems well before the road test;
 Precautions: Refer to DAS-407, "
Precaution for BSW System Service".
 System description: Refer to DAS-410, "
System Description".
 Normal operating condition: Refer to DAS-522, "
Description".
1.BSW SYSTEM ACTION TEST
1. Drive the vehicle.
2. Turn warning systems switch ON (w arning systems ON indicator is ON).
3. Check BSW operation according to the following table.
Vehicle condition/ Driver's operation Action
Warning
systems ON indicator Vehicle speed
(Approx.)
[km/h (MPH)] Turn signal
condition Status of ve-
hicle detec- tion within detection
area Indication on the
BSW indicator Buzzer
OFF — — — OFF OFF
ON Less than ap-
prox.
29 (18) —— OFF OFF
Approx. 32 (20)
or more —
Ve h i c l e i s
absent OFF OFF
OFF Ve h i c l e i s
detected ON OFF
ON
(vehicle de-
tected direc- tion) Before turn
signal oper-
ates
Ve h i c l e i s detected Blink Short continuous beep
Ve h i c l e i s
detected af- ter turn sig-
nal operates Blink
OFF
JSOIA0251GBJSOIA0252GB
JSOIA0251GB
Revision: 2010 May2011 QX56

DAS-470
< DTC/CIRCUIT DIAGNOSIS >[BSW]
C1A00 CONTROL UNIT
DTC/CIRCUIT DIAGNOSIS
C1A00 CONTROL UNIT
DTC LogicINFOID:0000000006223880
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 “C1A00” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“C1A00” detected as the current malfunction?
YES >> Refer to DAS-470, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006223881
1.CHECK SELF-DIAGNOSIS RESULTS
Check if any DTC other than “C1A00” is detec ted 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-38, "
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
C1A00 (0) CONTROL UNIT ADAS control unit internal malfunction ADAS control unit
Revision: 2010 May2011 QX56

DAS
C1A01 POWER SUPPLY CIRCUIT 1, C1A02 POWER SUPPLY CIRCUIT 2
DAS-471
< DTC/CIRCUIT DIAGNOSIS > [BSW]
C
D
E
F
G H
I
J
K L
M B
N P A
C1A01 POWER SUPPLY CIRCUIT 1, C1A02 POWER SUPPLY CIRCUIT 2
DTC LogicINFOID:0000000006223882
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 Readi ng” with CONSULT-III.
4. Check if the “C1A01” or “C1A02” is detected as t he current malfunction in “Self Diagnostic Result” of “ICC/
ADAS”.
Is
“C1A01” or “C1A02” detected as the current malfunction?
YES >> Refer to DAS-471, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006223883
1.CHECK ADAS CONTROL UNIT PO WER SUPPLY AND GROUND CIRCUIT
Check power supply and ground circuit of ADAS control unit. Refer to DAS-512, "
ADAS CONTROL UNIT :
Diagnosis Procedure".
Is the inspection result normal?
YES >> Replace the ADAS control unit. Refer to DAS-63, "Removal and Installation".
NO >> Repair or replace the malfunctioning parts.
DTC
(On board dis-
play) Trouble diagnosis
name DTC detecting condition Possible causes
C1A01 (1) POWER SUPPLY
CIR The battery voltage sent to ADAS control unit re-
mains less than 7.9 V for 5 seconds
 Connector, harness, fuse
 ADAS control unit
C1A02
(2) POWER SUPPLY
CIR 2 The battery voltage sent to ADAS control unit re-
mains more than 19.3 V for 5 seconds
Revision: 2010 May2011 QX56

DAS-472
< DTC/CIRCUIT DIAGNOSIS >[BSW]
C1A03 VEHICLE SPEED SENSOR
C1A03 VEHICLE SPEED SENSOR
DTC LogicINFOID:0000000006223884
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-486, "
ADAS CONTROL UNIT : DTC Logic" for DTC “U1000”.
 Refer to DAS-348, "
DTC Logic" for DTC “C1A04”.
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine.
2. Turn the BSW 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 Reading” 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-1 (BSW warning lamp: ON)>>Refer to DAS-472, "Diagnosis Procedure".
YES-2 (BSW warning lamp: OFF)>>Refer to CCS-87, "
Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006223885
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-440, "
DTC Index".
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
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) re-
ceived by the ADAS control unit via CAN com-
munication, are inconsistent  Wheel speed sensor
 ABS actuator and electric unit (control
unit)
 ADAS control unit
Revision: 2010 May2011 QX56

DAS
C1A15 GEAR POSITIONDAS-473
< DTC/CIRCUIT DIAGNOSIS > [BSW]
C
D
E
F
G H
I
J
K L
M B
N P A
C1A15 GEAR POSITION
DescriptionINFOID:0000000006228224
ADAS control unit judges the gear position based on the following signals.
 Current gear position signal transmit ted from TCM via CAN communication.
 Value of gear ratio calculated from input speed signal transmitted from TCM via CAN communication.
 Value of gear ratio calculated from the vehicle speed signal transmitted from ABS actuator and electric unit
(control unit) via CAN communication.
DTC LogicINFOID:0000000006228225
DTC DETECTION LOGIC
NOTE:
If DTC “C1A15” is detected along with DTC “U1000”, “C1A03”, or “C1A04 ”, first diagnose the DTC “U1000”,
“C1A03”, or “C1A04”.
 Refer to DAS-486, "
ADAS CONTROL UNIT : DTC Logic" for DTC “U1000”.
 Refer to DAS-472, "
DTC Logic" for DTC “C1A03”.
 Refer to CCS-89, "
DTC Logic" for DTC “C1A04”.
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine.
2. Turn the BSW system ON.
3. Drive the vehicle at 10 km/h (6 MPH) or faster for approximately 15 minutes or more. CAUTION:
Always drive safely.
4. Stop the vehicle.
5. Perform “All DTC Readi ng” with CONSULT-III.
6. Check if “C1A15” is detected as the current malf unction in the “Self Diagnostic Result” of “ICC/ADAS”.
Is
“C1A15” detected as the current malfunction?
YES >> Refer to DAS-473, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006228226
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “C1A03”, “C1A04”, or “U1000” is detected other than “C1A15” 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-440, "
DTC Index".
NO >> GO TO 2.
2.CHECK VEHICLE SPEED SIGNAL
Check that “VHCL SPEED SE” operates normally in “DATA MONITOR” of “ICC/ADAS”.
CAUTION:
Be careful of the vehicle speed.
Is the inspection result normal?
DTC
(On board dis- play) Trouble diagnosis
name DTC detecting condition Possible causes
C1A15 (15) GEAR POSITION A mismatch between an current gear posi-
tion signal transmitted from TCM via CAN
communication and a gear position calculat-
ed by the ADAS control unit continues for
approximately 11 minutes or more  Input speed sensor
 Vehicle speed sensor A/T (output speed
sensor)
TCM
Revision: 2010 May2011 QX56

DAS
C1A24 NP RANGEDAS-475
< DTC/CIRCUIT DIAGNOSIS > [BSW]
C
D
E
F
G H
I
J
K L
M B
N P A
C1A24 NP RANGE
DTC LogicINFOID:0000000006228227
DTC DETECTION LOGIC
NOTE:
If DTC “C1A24” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to DAS-486,
"ADAS CONTROL UNIT : DTC Logic".
DTC CONFIRMATION PROCEDURE
1.CHECK DTC REPRODUCE (1)
1. Start the engine.
2. Turn the BSW system ON.
3. Wait for approximately 5 minutes or more afte r shifting the selector lever to “P” position.
4. Perform “All DTC Readi ng” with CONSULT-III.
5. Check if the “C1A24” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“C1A24” detected as the current malfunction?
YES >> Refer to DAS-475, "Diagnosis Procedure".
NO >> GO TO 2.
2.CHECK DTC REPRODUCE (2)
1. Wait for approximately 5 minutes or more afte r shifting the selector lever to “N” position.
2. Perform “All DTC Reading”.
3. Check if the “C1A24” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“C1A24” detected as the current malfunction?
YES >> Refer to DAS-475, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006228228
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected other than “C1A24” 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 NP POSITION SWITCH SIGNAL
Check that “NP RANGE SW” operates normally in “DATA MONITOR” of “ICC/ADAS”.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Replace the ADAS control unit. Refer to DAS-63, "
Removal and Installation".
3.CHECK TCM DATA MONITOR
Check that “SLCT LVR POSI” operates normall y in “DATA MONITOR” of “TRANSMISSION”.
Is the inspection result normal?
YES >> Replace the ADAS control unit. Refer to DAS-63, "Removal and Installation".
NO >> GO TO 4.
DTC
(On board dis-
play) Trouble diagnosis name DTC detecting condition Possible causes
C1A24 (24) NP RANGE A mismatch between a shift position signal
transmitted from TCM via CAN communica-
tion and an current gear position signal contin-
ues for 60 seconds or more TCM
 Transmission range switch
Revision: 2010 May2011 QX56

DAS
C1A39 STEERING ANGLE SENSORDAS-477
< DTC/CIRCUIT DIAGNOSIS > [BSW]
C
D
E
F
G H
I
J
K L
M B
N P A
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]
C
D
E
F
G H
I
J
K L
M B
N P A
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