2008 INFINITI QX56 Factory Service Manual

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Page 2897 of 4083

INFINITI QX56 2008 Factory Service Manual PWC-56
< ECU DIAGNOSIS >
BCM (BODY CONTROL MODULE)
28 L/R Front blower monitor Input ONFront blower motor OFF
Battery voltage
Front blower motor ON 0V
29 W/B Hazard switch Input OFFON
0V
OFF 5V
30 Y/B

Page 2898 of 4083

INFINITI QX56 2008 Factory Service Manual BCM (BODY CONTROL MODULE)PWC-57
< ECU DIAGNOSIS >
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44 O Rear wiper auto stop
switch 1 Input ONRise up position (rear wiper
arm on stopper)
0V
A Position (full clockwi

Page 2899 of 4083

INFINITI QX56 2008 Factory Service Manual PWC-58
< ECU DIAGNOSIS >
BCM (BODY CONTROL MODULE)
58 W/R Optical sensorInput ONWhen optical sensor is illumi-
nated
3.1V or more
When optical sensor is not illu-
minated 0.6V or less
59 G Front door

Page 2900 of 4083

INFINITI QX56 2008 Factory Service Manual BCM (BODY CONTROL MODULE)PWC-59
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Wiring DiagramINFOID:0000000004874953
ABMWA0918GB
Revision: March 2010 2008 QX56

Page 2901 of 4083

INFINITI QX56 2008 Factory Service Manual PWC-60
< ECU DIAGNOSIS >
BCM (BODY CONTROL MODULE)
AWMWA0032GB
Revision: March 20102008 QX56

Page 2902 of 4083

INFINITI QX56 2008 Factory Service Manual BCM (BODY CONTROL MODULE)PWC-61
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AAMIA0197GB
Revision: March 2010 2008 QX56

Page 2903 of 4083

INFINITI QX56 2008 Factory Service Manual PWC-62
< ECU DIAGNOSIS >
BCM (BODY CONTROL MODULE)
Fail Safe
INFOID:0000000004874954
Fail-safe index
BCM performs fail-safe control when any DTC listed below is detected.
ALMIA0282GB
Revision: March 2

Page 2904 of 4083

INFINITI QX56 2008 Factory Service Manual BCM (BODY CONTROL MODULE)PWC-63
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DTC Inspection Priority ChartINFOID:0000000004874956
If some DTCs are displayed at the same time, perform inspections

BCM (BODY CONTROL MODULE)PWC-63
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DTC Inspection Priority ChartINFOID:0000000004874956
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
DTC IndexINFOID:0000000004874957
NOTE: Details of time display
• CRNT: Displays when there is a malfunction now or after returning to the normal condition until turning igni-
tion switch OFF → ON again.
• 1 - 39: Displayed if any previous ma lfunction is present when current conditi on is normal. It increases like 1
→ 2 → 3...38 → 39 after returning to the normal condition whenever ignition switch OFF → ON. The counter
remains at 39 even if the number of cycles exceeds it. It is counted from 1 again when turning ignition switch
OFF → ON after returning to the normal condi tion if the malfunction is detected again.
Display contents of CONSULT Fail-safe Cancellation
U1000: CAN COMM CIRCUIT I nhibit engine crankingWhen the BCM re-establishes communication with the other mod-
ules.
U1010: CONTROL UNIT (CAN) Inhibit engine cranking When the BCM re-start communicating with the other modules.
Priority DTC
1 • U1000: CAN COMM CIRCUIT
• U1010: CONTROL UNIT (CAN)
2 • B2190: NATS ANTENNA AMP
• B2191: DIFFERENCE OF KEY
• B2192: ID DISCORD BCM-ECM
• B2193: CHAIN OF BCM-ECM
• B2013: STRG COMM 1
• B2552: INTELLIGENT KEY
• B2590: NATS MALFUNCTION
3 • C1729: VHCL SPEED SIG ERR
• C1735: IGNITION SIGNAL
4 • C1704: LOW PRESSURE FL
• C1705: LOW PRESSURE FR
• C1706: LOW PRESSURE RR
• C1707: LOW PRESSURE RL
• C1708: [NO DATA] FL
• C1709: [NO DATA] FR
• C1710: [NO DATA] RR
• C1711: [NO DATA] RL
• C1712: [CHECKSUM ERR] FL
• C1713: [CHECKSUM ERR] FR
• C1714: [CHECKSUM ERR] RR
• C1715: [CHECKSUM ERR] RL
• C1716: [PRESSDATA ERR] FL
• C1717: [PRESSDATA ERR] FR
• C1718: [PRESSDATA ERR] RR
• C1719: [PRESSDATA ERR] RL
• C1720: [CODE ERR] FL
• C1721: [CODE ERR] FR
• C1722: [CODE ERR] RR
• C1723: [CODE ERR] RL
• C1724: [BATT VOLT LOW] FL
• C1725: [BATT VOLT LOW] FR
• C1726: [BATT VOLT LOW] RR
• C1727: [BATT VOLT LOW] RL
Revision: March 2010
2008 QX56

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