2009 INFINITI QX56 Factory Service Manual

homelink oil level gas mileage trunk release child restraint fuel filter location

Page 801 of 4171

INFINITI QX56 2009 Factory Service Manual BCM (BODY CONTROL MODULE)DEF-33
< ECU DIAGNOSIS >
C
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DTC Inspection Priority ChartINFOID:0000000004223696
If some DTCs are displayed at the same time, perform inspections

BCM (BODY CONTROL MODULE)DEF-33
< ECU DIAGNOSIS >
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DTC Inspection Priority ChartINFOID:0000000004223696
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
DTC IndexINFOID:0000000004223697
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: December 20092009 QX56

Page 802 of 4171

INFINITI QX56 2009 Factory Service Manual DEF-34
< ECU DIAGNOSIS >
BCM (BODY CONTROL MODULE)
CONSULT displayFail-safeIntelligent Key
warning lamp ON Tire pressure
monitor warning lamp ON Reference page
No DTC is detected.
further testing
m

Page 803 of 4171

INFINITI QX56 2009 Factory Service Manual REAR WINDOW DEFOGGER AND DOOR MIRROR DEFOGGER DO NOT OPER-
ATE.
DEF-35
< SYMPTOM DIAGNOSIS >
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SYMPTOM DIAGNOSIS
REAR WINDOW DEFOGGER AND DO OR MIRROR DEFOGGER DO NOT
O

Page 804 of 4171

INFINITI QX56 2009 Factory Service Manual DEF-36
< SYMPTOM DIAGNOSIS >
REAR WINDOW DEFOGGER DOES NOT OPERATE BUT BOTH OF DOOR MIR-ROR DEFOGGER OPERATE.
REAR WINDOW DEFOGGER DOES NO T OPERATE BUT BOTH OF DOOR
MIRROR DEFOGGER OPERATE.
Diagnosis

Page 805 of 4171

INFINITI QX56 2009 Factory Service Manual BOTH DOORS MIRROR DEFOGGER DON’T OPERATE BUT REAR WINDOW DEFOGGER OPERATES
DEF-37
< SYMPTOM DIAGNOSIS >
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BOTH DOORS MIRROR DEFOGGER DON’T OPERATE BUT REAR WIN-
DOW

Page 806 of 4171

INFINITI QX56 2009 Factory Service Manual DEF-38
< SYMPTOM DIAGNOSIS >
DRIVER SIDE DOOR MIRROR DEFOGGER DOES NOT OPERATE.
DRIVER SIDE DOOR MIRROR DEFOGGER DOES NOT OPERATE.
Diagnosis ProcedureINFOID:0000000003776359
1. CHECK DOOR MIRROR DEFO

Page 807 of 4171

INFINITI QX56 2009 Factory Service Manual PASSENGER SIDE DOOR MIRROR DEFOGGER DOES NOT OPERATE.
DEF-39
< SYMPTOM DIAGNOSIS >
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PASSENGER SIDE DOOR MIRROR DEFOGGER DOES NOT OPERATE.
Diagnosis ProcedureINFOID:000

Page 808 of 4171

INFINITI QX56 2009 Factory Service Manual DEF-40
< SYMPTOM DIAGNOSIS >
REAR WINDOW DEFOGGER SWITCH DOES NOT LIGHT, BUT REAR WINDOW
DEFOGGER OPERATES
REAR WINDOW DEFOGGER SWITCH DOES NOT LIGHT, BUT REAR WIN-
DOW DEFOGGER OPERATES
Diagnosis P

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