2009 INFINITI QX56 200

BCS-46
< ECU DIAGNOSIS >[BCM]
BCM (BODY CONTROL MODULE)
Wiring Diagram
INFOID:0000000003776423
AAMWA0236GB
Revision: December 20092009 QX56

BCS
BCM (BODY CONTROL MODULE)BCS-47
< ECU DIAGNOSIS > [BCM]
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ABMWA0015GB
Revision: December 20092009 QX56

BCS-48
< ECU DIAGNOSIS >[BCM]
BCM (BODY CONTROL MODULE)
AAMWA0237GB
Revision: December 20092009 QX56

BCS
BCM (BODY CONTROL MODULE)BCS-49
< ECU DIAGNOSIS > [BCM]
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ABMIA0023GB
Revision: December 20092009 QX56

BCS-50
< ECU DIAGNOSIS >[BCM]
BCM (BODY CONTROL MODULE)
Fail Safe
INFOID:0000000004064161
Fail-safe index
BCM performs fail-safe control when any DTC listed below is detected.
ABMIA0024GB
Revision: December 20092009 QX56

BCS
BCM (BODY CONTROL MODULE)BCS-51
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DTC Inspection Priority ChartINFOID:0000000003776424
If some DTCs are displayed at the same time, per
form inspections one by one based on the following priority
chart.
DTC IndexINFOID:0000000003776425
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

BCS-52
< ECU DIAGNOSIS >[BCM]
BCM (BODY CONTROL MODULE)
CONSULT display Fail-safeIntelligent Key
warning lamp ON Tire pressure
monitor warning lamp ON Reference page
No DTC is detected.
further testing
may be required. ————
U1000: CAN COMM CIRCUIT — — — BCS-30
U1010: CONTROL UNIT (CAN) — — —BCS-31
B2190: NATS ANTENNA AMP — — —SEC-27
B2191: DIFFERENCE OF KEY — — — SEC-30
B2192: ID DISCORD BCM-ECM — — —SEC-31
B2193: CHAIN OF BCM-ECM — — —SEC-33
B2552: INTELLIGENT KEY — — —SEC-35
B2590: NATS MALFUNCTION — — —SEC-36
C1704: LOW PRESSURE FL — — — WT-26
C1705: LOW PRESSURE FR — — —WT-26
C1706: LOW PRESSURE RR — — —WT-26
C1707: LOW PRESSURE RL — — —WT-26
C1708: [NO DATA] FL — — —WT-14
C1709: [NO DATA] FR — — —WT-14
C1710: [NO DATA] RR — — —WT-14
C1711: [NO DATA] RL — — —WT-14
C1712: [CHECKSUM ERR] FL — — —WT-16
C1713: [CHECKSUM ERR] FR — — —WT-16
C1714: [CHECKSUM ERR] RR — — —WT-16
C1715: [CHECKSUM ERR] RL — — —WT-16
C1716: [PRESSDATA ERR] FL — — —WT-18
C1717: [PRESSDATA ERR] FR — — —WT-18
C1718: [PRESSDATA ERR] RR — — —WT-18
C1719: [PRESSDATA ERR] RL — — —WT-18
C1720: [CODE ERR] FL — — —WT-16
C1721: [CODE ERR] FR — — —WT-16
C1722: [CODE ERR] RR — — —WT-16
C1723: [CODE ERR] RL — — —WT-16
C1724: [BATT VOLT LOW] FL — — —WT-16
C1725: [BATT VOLT LOW] FR — — —WT-16
C1726: [BATT VOLT LOW] RR — — —WT-16
C1727: [BATT VOLT LOW] RL — — —WT-16
C1729: VHCL SPEED SIG ERR — — —WT-19
C1735: IGNITION SIGNAL — — — —
Revision: December 20092009 QX56

BCS
COMBINATION SWITCH SYSTEM SYMPTOMSBCS-53
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SYMPTOM DIAGNOSIS
COMBINATION SWITCH SYSTEM SYMPTOMS
Symptom TableINFOID:0000000003776426
1. Perform the data monitor of CONSULT-II
I to check for any malfunctioning item.
2. Check the malfunction combinations.
Malfunction item: ×
3. Identify the malfunctioning part from the agreed combination and repair or replace the part.
Data monitor item
Malfunction combi-nation
TURN SIGNAL R
TURN SIGNAL L HI BEAM SW
HEADLAMP SW 1
HEADLAMP SW 2 TAIL LAMP SWPASSING SW
AUTO LIGHT SW FR FOG SW
FR WIPER HI
FR WIPER LOW FR WIPER INT
FR WASHER SW INT VOLUME
RR WIPER ON
RR WIPER INT
RR WASHER SW
×× × × A
×××× B
×× × × C
×× ×× D
××× E
××× F
××× × G
××× H
×××× I
×××× J
Combinations other than those above K All Items L
If only one item is detected or the item is not applicable to the combinations A to L M
Malfunction
combination Malfunctioning part Repair or replace
A Combination switch INPUT 1 circuit
Inspect the combination switch input circuit applicable to the malfunctioning
part. Refer to BCS-33, "Diagnosis Procedure"
.
B Combination switch INPUT 2 circuit
C Combination switch INPUT 3 circuit
D Combination switch INPUT 4 circuit E Combination switch INPUT 5 circuitF Combination switch OUTPUT 1 circuit
Inspect the combination switch output circuit applicable to the malfunction-
ing part. Refer to BCS-35, "Diagnosis Procedure"
.
G Combination switch OUTPUT 2 circuit
H Combination switch OUTPUT 3 circuit I Combination switch OUTPUT 4 circuit
J Combination switch OUTPUT 5 circuit
K Light and turn signal switch or front wip-
er and washer switch Refer to
BCS-36, "Description"
.
L BCM Replace BCM. Refer to BCS-56, "Removal and Installation"
.
M Light and turn signal switch or front wip-
er and washer switch Replace the switch that cannot be operated.
Revision: December 20092009 QX56