2011 INFINITI QX56 ground

DAS
C1A01 POWER SUPPLY CIRCUIT 1, C1A02 POWER SUPPLY CIRCUIT 2
DAS-471
< DTC/CIRCUIT DIAGNOSIS > [BSW]
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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
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-512
< DTC/CIRCUIT DIAGNOSIS >[BSW]
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
ADAS CONTROL UNIT
ADAS CONTROL UNIT : Diagnosis ProcedureINFOID:0000000006223967
1.CHECK ADAS CONTROL UNIT POWER SUPPLY CIRCUIT
Check voltage between ADAS control unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the ADAS control unit power supply circuit.
2.CHECK ADAS CONTROL UNIT GROUND CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect the ADAS control unit connector.
3. Check for continuity between ADAS control unit harness connector and ground.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Repair the ADAS control unit ground circuit.
SIDE RADAR LH
SIDE RADAR LH : Diagnosis ProcedureINFOID:0000000006223968
1.CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect the side radar LH connector.
3. Check voltage between side radar LH harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the side radar LH power supply circuit.
2.CHECK GROUND CIRCUIT
Check continuity between side radar LH harness connectors and ground.
Te r m i n a l Condition
Voltag e
(Approx.)
(+) (–)
ADAS control unit
GroundIgnition
switch
Connector Terminal
B61 16 OFF 0 V
ON Battery volt-
age
ADAS control unit
GroundContinuity
Connector Terminal
B61 6 Existed
Te r m i n a l s Condition
Vo l ta g e
(Approx.)
(+) (
−)
Side radar LH
GroundIgnition switch
Connector Terminal
B74 5 OFF 0 V
ON Battery voltage
Revision: 2010 May2011 QX56

DAS
POWER SUPPLY AND GROUND CIRCUITDAS-513
< DTC/CIRCUIT DIAGNOSIS > [BSW]
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Is the inspection result normal?
YES >> INSPECTION END
NO >> Repair the side radar LH ground circuit.
SIDE RADAR RH
SIDE RADAR RH : Diagnosis ProcedureINFOID:0000000006223969
1.CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect the side radar RH connector.
3. Check voltage between side radar RH harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the side radar RH power supply circuit.
2.CHECK GROUND CIRCUIT
Check continuity between side r adar RH harness connectors and ground.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Repair the side radar RH ground circuit.
Side radar LH GroundContinuity
Connector Terminal
B74 2 Existed
Te r m i n a l s Condition
Vo l ta g e
(Approx.)
(+) (
−)
Side radar RH
GroundIgnition switch
Connector Terminal
B243 5 OFF 0 V
ON Battery voltage
Side radar RH GroundContinuity
Connector Terminal
B243 2 Existed
Revision: 2010 May2011 QX56

DAS-514
< DTC/CIRCUIT DIAGNOSIS >[BSW]
RIGHT/LEFT SWITCHING SIGNAL CIRCUIT
RIGHT/LEFT SWITCHING SIGNAL CIRCUIT
Diagnosis ProcedureINFOID:0000000006223970
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Check the terminals and connectors of the side radar RH for damage, bend and short (unit side and con-
nector side).
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the terminal or connector.
2.CHECK CONTINUITY RIGHT/LEFT SWITCHING SIGNAL CIRCUIT
1. Disconnect side radar RH connector.
2. Check continuity between side radar RH harness connectors and ground.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Repair harness or connector.
Side radar RH
GroundContinuity
Connector Terminal
B243 1 Existed
Revision: 2010 May2011 QX56

DAS
WARNING SYSTEMS SWITCH CIRCUITDAS-515
< DTC/CIRCUIT DIAGNOSIS > [BSW]
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WARNING SYSTEMS SWITCH CIRCUIT
Component Function CheckINFOID:0000000006223971
1.CHECK WARNING SYSTEMS SWITCH INPUT SIGNAL
1. Turn the ignition switch ON.
2. Select the DATA MONITOR item “WARN SYS SW” of “ICC/ADAS” with CONSULT-III.
3. With operating the warning systems switch, check the monitor status.
Is the inspection result normal?
YES >> Warning systems switch circuit is normal.
NO >> Refer to DAS-389, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000006223972
1.CHECK WARNING SYSTEMS SWITCH SIGNAL INPUT
1. Turn the ignition switch ON.
2. Check voltage between ADAS control unit harness connector and ground.
Is the inspection result normal?
YES >> Replace the ADAS control unit. Refer to DAS-63, "Removal and Installation".
NO >> GO TO 2.
2.CHECK WARNING SYSTEMS SWITCH
1. Turn ignition switch OFF.
2. Remove warning systems switch.
3. Check warning systems switch. Refer to DAS-390, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Replace the warning systems switch. Refer to DAS-404, "
Removal and Installation".
3.CHECK WARNING SYSTEMS SWITCH GROUND CIRCUIT
Check continuity between twin switch harness connector terminal and the ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair harness or connector.
4.CHECK WARNING SYSTEM S SWITCH SIGNAL INPUT CIRCUIT FOR OPEN
1. Disconnect the ADAS control unit connector.
Monitor item Condition Monitor status
WARN SYS
SW Warning systems switch is pressed On
Warning systems switch is not pressed OFF
Te r m i n a l s
Condition
Vo l ta g e
(Approx.)
(+) (
−)
ADAS control unit
GroundWarning
systems switch
Connector Terminal
B61 1 Pressed 0 V
Released 12 V
Twin switch GroundContinuity
Connector Terminal
M127 3 Existed
Revision: 2010 May2011 QX56