2011 INFINITI QX56 Factory Service Manual

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Page 457 of 5598

INFINITI QX56 2011 Factory Service Manual
BCS
INSPECTION AND ADJUSTMENTBCS-69
< BASIC INSPECTION >
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CONFIGURATION (BCM)
: Configuration listINFOID:0000000006274828
Items and setting value that are written in BCM

Page 458 of 5598

INFINITI QX56 2011 Factory Service Manual
BCS-70
< DTC/CIRCUIT DIAGNOSIS >
U1000 CAN COMM
DTC/CIRCUIT DIAGNOSIS
U1000 CAN COMM
DescriptionINFOID:0000000006274829
CAN (Controller Area Network) is a serial communication line for real time appl

Page 459 of 5598

INFINITI QX56 2011 Factory Service Manual
BCS
U1010 CONTROL UNIT (CAN)BCS-71
< DTC/CIRCUIT DIAGNOSIS >
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U1010 CONTROL UNIT (CAN)
DTC LogicINFOID:0000000006274832
DTC DETECTION LOGIC
Diagnosis ProcedureINFOID:00000

Page 460 of 5598

INFINITI QX56 2011 Factory Service Manual
BCS-72
< DTC/CIRCUIT DIAGNOSIS >
U0415 VEHICLE SPEED
U0415 VEHICLE SPEED
DescriptionINFOID:0000000006274834
U0415 is displayed if any unusual condition is present in the reception status of the vehic

Page 461 of 5598

INFINITI QX56 2011 Factory Service Manual
BCS
B2562 LOW VOLTAGEBCS-73
< DTC/CIRCUIT DIAGNOSIS >
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B2562 LOW VOLTAGE
DTC LogicINFOID:0000000006274837
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.DTC CONFIRMATION

Page 462 of 5598

INFINITI QX56 2011 Factory Service Manual
BCS-74
< DTC/CIRCUIT DIAGNOSIS >
B26E7 TPMS CAN COMM
B26E7 TPMS CAN COMM
DTC LogicINFOID:0000000006274839
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.DTC CONFIRMATION
1. Erase the DTC.
2. Turn i

BCS-74
< DTC/CIRCUIT DIAGNOSIS >
B26E7 TPMS CAN COMM
B26E7 TPMS CAN COMM
DTC LogicINFOID:0000000006274839
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.DTC CONFIRMATION
1. Erase the DTC.
2. Turn ignition switch OFF.
3. Perform the “Self Diagnostic Result” of BCM with CONS ULT-III, when passed 2 seconds or more after the
ignition switch is turned ON.
Is any DTC detected?
YES >> Refer to BCS-74, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006274840
NOTE:
If DTC “B26E7” detected along with DTC “U1000” , first diagnose the DTC “U1000”. Refer to BCS-70, "
Diagno-
sis Procedure".
1.LOW TIRE PRESSURE WARNING CONTRO L UNIT SELF DIAGNOSTIC RESULT
Perform “Self Diagnostic Result” of low tire pressu re warning control unit with CONSULT-III. Refer to WT-12,
"CONSULT-III Function".
Is any DTC detected?
YES >> GO TO 2.
NO >> GO TO 4.
2.LOW TIRE PRESSURE WARNING CONTROL UNIT DIAGNOSIS
Perform low tire pressure warning control uni t component diagnosis of detected DTC. Refer to WT-18, "
DTC
Index".
>> GO TO 3.
3.BCM SELF DIAGNOSTIC RESULT
Erase DTC of BCM, and perform “Self Diagnostic Result” again.
Is DTC
“B26E7” detected?
YES >> Replace BCM. Refer to BCS-81, "Removal and Installation".
NO >> INSPECTION END
4.REPLACE LOW TIRE PRESSURE WA RNING CONTROL UNIT TEMPORARILY
Remove low tire pressure warning control unit, and in stall normal low tire pressure warning control unit.
>> GO TO 5.
5.BCM SELF-DIAGNOSTIC RESULT
Erase DTC of BCM, and perform “S elf Diagnostic Result” of BCM again.
Is DTC
“B26E7” detected?
YES >> Replace BCM. Refer to BCS-81, "Removal and Installation".
NO >> Replace low tire pressure warning control unit. Refer to WT-65, "
Removal and Installation".
DTC CONSULT-III display description DTC Detection Condition Probable cause
B26E7 TPMS CAN COMM When ignition switch is ON, BCM cannot re-
ceived CAN communication signal from low
tire pressure warn
ing control unit. CAN communication system
Low tire pressure warning control unit
BCM
Revision: 2010 May2011 QX56

Page 463 of 5598

INFINITI QX56 2011 Factory Service Manual
BCS
POWER SUPPLY AND GROUND CIRCUITBCS-75
< DTC/CIRCUIT DIAGNOSIS >
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POWER SUPPLY AND GROUND CIRCUIT
Diagnosis ProcedureINFOID:0000000006274841
1.CHECK FUSE AND FUSIBLE LI

Page 464 of 5598

INFINITI QX56 2011 Factory Service Manual
BCS-76
< DTC/CIRCUIT DIAGNOSIS >
COMBINATION SWITCH OUTPUT CIRCUIT
COMBINATION SWITCH OUTPUT CIRCUIT
Diagnosis ProcedureINFOID:0000000006274842
1.CHECK OUTPUT 1 - 5 CIRCUIT FOR OPEN
1. Turn ignition

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