2011 INFINITI QX56 hood release

PCS-16
< ECU DIAGNOSIS INFORMATION >[IPDM E/R]
IPDM E/R
ST/INHI RLYIgnition switch ON Off
At engine cranking INHI ON
→ ST ON
The status of starter relay or starter control relay cannot be recognized by
the battery voltage malfunction, etc. when the starter relay is ON and the
starter control relay is OFF. UNKWN
DETENT SW Ignition switch ON  Pull the selector lever with selec-
tor lever in P position.
 Selector lever in any position oth-
er than P. Off
Release the selector lever with selector lever in P position. On
S/L RLY -REQ None of the conditions below are present. Off
 Open the driver door after the ignition switch is turned OFF (for a few
seconds).
 Press the push-button ignition switch when the steering lock is activat-
ed. On
S/L STATE Steering lock is locked. LOCK
Steering lock is unlocked. UNLK
[DTC: B210A] is detected. UNKWN
OIL P SW Ignition switch OFF or ACC
Open
Ignition switch ON (engine running)
Ignition switch ON (engine stopped) Close
HOOD SW Close the hood Off
Open the hood On
HL WASHER REQ Not operating Off
Headlamp washer operating On
THFT HRN REQ Not operation Off
 Panic alarm is activated
 Theft warning alarm is activated
On
HORN CHIRP Not operation Off
Door locking with Intelligent Key (horn chirp mode) On
Monitor Item Condition Value/Status
Revision: 2010 May2011 QX56

COMPONENT PARTSSEC-9
< SYSTEM DESCRIPTION > [WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G H
I
J
L
M A
B
SEC
N
O P
Then, when the power supply position is turned ON, BCM performs ID verification between BCM and ECM. If
the ID verification result is OK, ECM can start engine.
ECMINFOID:0000000006226155
ECM controls the engine.
When power supply position is turned ON, BCM starts communication with ECM and performs the ID verifica-
tion between BCM and ECM.
If the verification result is OK, the engine can start. If the verification result is NG, the engine can not start.
IPDM E/RINFOID:0000000006226156
IPDM E/R has steering lock relay, starter relay and starte r control relay inside. Steering lock relay is used for
the steering lock/unlock function. Starter relay and star ter control relay are used for the engine starting func-
tion. IPDM E/R controls these relays while communicating with BCM.
NATS Antenna Amp.INFOID:0000000006226157
The ID verification is performed between BCM and transponder in Intelligent Key via NATS antenna amp.
when Intelligent Key backside is contacted to push-button i gnition switch in case that Intelligent Key battery is
discharged. If the ID verification result is OK, the release of steering lock and the operation of starting engine
is available.
TCMINFOID:0000000006226158
TCM transmits the shift position signal (P/N position) to BCM and IPDM E/R. And further, TCM transmits the
shift position signal (P/N position) to BCM via CAN communication.
BCM confirms the A/T shift selector position with the following 5 signals.
 P position signal from A/T shift selector (detention switch)
 P/N position signal from TCM
 P position signal from IPDM E/R (CAN)
 P/N position signal from IPDM E/R (CAN)
 P/N position signal from TCM (CAN)
IPDM E/R confirms the A/T shift sele ctor position with the following 3 signals.
 P position signal from A/T shift selector (detention switch)
 P/N position signal from TCM
 P/N position signal from BCM (CAN)
Combination MeterINFOID:0000000006226159
Combination meter transmits the vehicle speed signal to BCM via CAN communication.
BCM also receives the vehicle speed signal from ABS ac tuator and electric unit (control unit) via CAN commu-
nication. BCM compares both signals to detect the vehicle speed.
Door SwitchINFOID:0000000006226160
Door switch detects door open/close condition and then transmits ON/OFF signal to BCM.
Hood SwitchINFOID:0000000006226161
Hood switch detects that hood is open, and then transmits the signal to IPDM E/R. IPDM E/R transmits hood
switch signal to BCM via CAN communication.
Inside Key AntennaINFOID:0000000006226162
Inside key antenna detects whether Intelligent Key is inside the vehicle, and transmits the signal to BCM.
Three inside key antennas are installed in t he instrument center, console and luggage room.
Intelligent KeyINFOID:0000000006226163
Each Intelligent key has an individual electronic ID , and transmits the ID signal by request from BCM.
Carrying the Intelligent Key whose ID is registered in BCM, the driver can performs door lock/unlock operation
and push-button ignition switch operation.
Revision: 2010 May2011 QX56

SEC-142
< DTC/CIRCUIT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
HOOD SWITCH
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace harness.
4.CHECK HOOD SWITCH
Refer to SEC-142, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Replace hood switch.
5.CHECK INTERMITTENT INCIDENT
Refer to GI-40, "
Intermittent Incident".
>> INSPECTION END
Component InspectionINFOID:0000000006226307
1.CHECK HOOD SWITCH
1. Turn ignition switch OFF.
2. Disconnect hood switch connector.
3. Check continuity between hood switch terminals.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace hood switch.
Hood switch Condition Continuity
Te r m i n a l
1 2 Hood switch Press Not existed
Release Existed
Revision: 2010 May2011 QX56