2004 INFINITI QX56 key battery

REMOTE KEYLESS ENTRY SYSTEM
BL-63
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Revision: August 20072004 QX56
Door Switch CheckEIS007WE
1. CHECK DOOR SWITCHES INPUT SIGNAL
With CONSULT-II
Check door switches ("DOOR SW-DR", "DOOR SW-AS", "DOOR SW-RL", "DOOR SW-RR", "BACK DOOR
SW") in DATA MONITOR mode with CONSULT–II.Refer to BL-27, "
DATA MONITOR" .

When doors are open:

When doors are closed:
Without CONSULT-II
Check voltage between BCM connector M18 or M19 terminals 12,
13, 43, 47, 48 and ground.
OK or NG
OK >> Door switch circuit is OK.
NG >> GO TO 2.DOOR SW-DR : ON
DOOR SW-AS : ON
DOOR SW-RL : ON
DOOR SW-RR : ON
BACK DOOR SW : ON
DOOR SW-DR : OFF
DOOR SW-AS : OFF
DOOR SW-RL : OFF
DOOR SW-RR : OFF
BACK DOOR SW : OFF
LIIA0665E
Connector ItemTerminals (Wire color)
ConditionVoltage (V)
(Approx.)
( + ) ( – )
M19Back door
latch (door
ajar switch)43 (R/B)
GroundOpen
↓
Closed0
↓
Battery voltage Front door
switch LH47 (SB)
Rear door
switch LH48 (R/Y)
M18Front door
switch RH12 (R/L)
Rear door
switch RH13 (GR)
LIIA1041E

REMOTE KEYLESS ENTRY SYSTEM
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Revision: August 20072004 QX56
4. CHECK BACK DOOR SWITCH GROUND
Check continuity between back door latch connector terminal 8 and
ground.
OK or NG
OK >> Back door switch circuit is OK.
NG >> Repair or replace harness.
Keyfob Battery and Function CheckEIS002S3
1. CHECK KEYFOB BATTERY
Remove battery and measure voltage across battery positive and negative terminals, (+) and (−).
NOTE:
Keyfob does not function if battery is not set correctly.
OK or NG
OK >> GO TO 2.
NG >> Replace battery.8 (B) - Ground : Continuity should exist.
LIIA0828E
Voltage : 2.5V - 3.0V
SEL237W

BL-68
REMOTE KEYLESS ENTRY SYSTEM
Revision: August 20072004 QX56
ACC Power CheckEIS002S5
1. CHECK ACC POWER
With CONSULT-II
Check "ACC ON SW" in DATA MONITOR mode with CONSULT–II. Refer to BL-27, "
DATA MONITOR" .
Without CONSULT-II
Check voltage between BCM connector M18 terminal 11 and
ground.
OK or NG
OK >> ACC power circuit is OK.
NG >> Check the following:

10A fuse [No. 4, located in fuse block (J/B)]

Harness for open or short.
IPDM E/R Operation CheckEIS002S6
1. CHECK IPDM E/R INPUT VOLTAGE
Check voltage between IPDM E/R connector E122 terminal 45 and
ground.
OK or NG
OK >> Replace IPDM E/R.
NG >> GO TO 2.
Monitor Item Condition
ACC ON SWIgnition switch position ACC : ON
Ignition switch position OFF : OFF
PIIA3367E
ConnectorTe r m i n a l
(Wire color)
ConditionVoltage (V)
(Approx.)
( + ) ( – )
M18 11 (O) GroundACC Battery voltage
OFF 0
PIIA7002E
ConnectorTe r m i n a l
(Wire color)Voltage (V)
(Approx.)
( + ) ( – )
E122 45 (G/W) Ground Battery voltage
LIIA1053E

BL-74
REMOTE KEYLESS ENTRY SYSTEM
Revision: August 20072004 QX56
NOTE:

If a keyfob is lost, the ID code of the lost keyfob must be erased to prevent unauthorized use. A specific ID
code can be erased with CONSULT-II. However, when the ID code of a lost keyfob is not known, all con-
troller ID codes should be erased. After all ID codes are erased, the ID codes of all remaining and/or new
keyfobs must be re-registered.
To erase all ID codes in memory, register one ID code (keyfob) five times. After all ID codes are erased,
the ID codes of all remaining and/or new keyfobs must be re-registered.

When registering an additional keyfob, the existing ID codes in memory may or may not be erased. If five
ID codes are stored in memory, when an additional code is registered, only the oldest code is erased. If
less than five ID codes are stored in memory, when an additional ID code is registered, the new ID code is
added and no ID codes are erased.

If you need to activate more than two additional new keyfobs, repeat the procedure “Additional ID code
entry” for each new keyfob.

Entry of maximum five ID codes is allowed. When more than five ID codes are entered, the oldest ID code
will be erased.

Even if same ID code that is already in the memory is input, the same ID code can be entered. The code
is counted as an additional code.
Keyfob Battery ReplacementEIS002SC
LIIA1514E

BL-86
VEHICLE SECURITY (THEFT WARNING) SYSTEM
Revision: August 20072004 QX56
Terminals and Reference Value for IPDM E/REIS002SJ
*1: when horn reminder is ON.
*2: L/W is for USA.
*3: Y is for Canada.
CONSULT-II Function (BCM)EIS002SK
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
Terminal Wire
ColorItem ConditionVoltage (V)
(Approx.)
38 B Ground — 0
39 W CAN-H — —
40 R CAN-L — —
41 Y/B Hood switchHood closed OFF Battery voltage
Hood open ON 0V
45 G/W Horn relayWhen doors locks are operated
using keyfob (OFF → ON) *1Battery voltage → 0V
52 L Headlamp low (LH)Ignition
SW ONLighting
switch
2ND posi-
tionOFF 0V
ON Battery voltage
54 R/Y Headlamp low (RH)Ignition
SW ONLighting
switch
2ND posi-
tionOFF 0V
ON Battery voltage
55 G Headlamp high (LH)Ignition
SW ONLighting
switch
HIGH or
PA S S
positionOFF 0V
ON Battery voltage
56L/W *2
Y *3Headlamp high (RH)Ignition
SW ONLighting
switch
HIGH or
PA S S
positionOFF 0V
ON Battery voltage
59 B Ground — 0
BCM
diagnostic test itemDiagnostic mode Description
Inspection by partWORK SUPPORTSupports inspections and adjustments. Commands are transmitted to the
BCM for setting the status suitable for required operation, input/output sig-
nals are received from the BCM and received date is displayed.
DATA MONITOR Displays BCM input/output data in real time.
ACTIVE TESTOperation of electrical loads can be checked by sending drive signal to
them.
SELF-DIAG RESULTS Displays BCM self-diagnosis results.
CAN DIAG SUPPORT MNTRThe result of transmit/receive diagnosis of CAN communication can be
read.
ECU PART NUMBER BCM part number can be read.
CONFIGURATION Performs BCM configuration read/write functions.

BL-92
VEHICLE SECURITY (THEFT WARNING) SYSTEM
Revision: August 20072004 QX56
Symptom ChartEIS002SN
*1: Make sure the system is in the armed phase.PROCEDURE
Diagnostic procedure
SYMPTOM
1Vehicle security
system cannot be
set by ····Door switch Refer to BL-93, "
Door Switch Check" .
Lock/unlock switch Refer to BL-100, "
Door Lock/Unlock Switch Check" .
Door outside keyRefer to BL-98, "
Front Door Lock Assembly LH (Key Cylinder Switch)
Check" .
BCM If the above systems are “OK”, replace BCM.
Security indicator does not turn “ON”.Refer to BL-97, "
Combination Meter (Security Indicator Lamp) Check" .
If the above systems are “OK”, replace BCM.
2*1 Vehicle secu-
rity system does
not alarm when
····Any door, hood or glass hatch
is opened.Refer to BL-93, "
Door Switch Check" .
Refer to BL-95, "
Hood Switch Check" .
If the above systems are “OK”, replace BCM.
3Vehicle security
alarm does not
activate.Horn alarmRefer to BL-100, "
Vehicle Security Horn Alarm Check" .
If the above systems are “OK”, check horn system.
Refer to WW-56, "
HORN" .
Headlamp alarmRefer to BL-100, "
Vehicle Security Headlamp Alarm Check" .
If the above systems are “OK”, replace BCM.
4Vehicle security
system cannot be
canceled by ····Door outside keyRefer to BL-98, "
Front Door Lock Assembly LH (Key Cylinder Switch)
Check" .
If the above systems are “OK”, check main power window and door lock/
unlock switch.
KeyfobCheck remote keyless entry function. Refer toBL-65, "
Keyfob Battery and
Function Check"
If the above systems are “OK”, replace BCM.

AUTOMATIC BACK DOOR SYSTEM
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Revision: August 20072004 QX56
Back Door Handle Switch Operation (Fully Closed → Fully Open Operation)

When the back door handle is pulled, back door control unit terminal 26 receives the signal.

The back door control unit checks that the back door is unlocked and checks the A/T selector lever (P
position) through terminal 18, vehicle speed through terminal 21, ignition status through terminal 7, glass
hatch is closed, battery voltage and back door close switch position through terminal 13.

When the back door control unit receives the signal, if all auto back door operating enable conditions are
met, it sends a 5 volt signal through terminal 6 and grounds terminal 9 to sound the warning chime, sends
a signal to the BCM through terminal 4 to flash the hazard lamps and unlocks the back door latch through
terminal 12.

The back door control unit supplies power to the magnetic clutch and the back door motor and moves the
back door in the open direction. (At this time, it also executes speed control, input reverse, and anti-pinch
detection control.)

When the back door is opened to the full-open position, the full-open position is detected by the encoder,
and the back door control unit switches the back door motor OFF and the magnetic clutch is pulsed and
then turned OFF.

The back door is held in the fully open position by the gas stays.
Power Liftgate Switch Operation (Fully Open → Fully Closed Operation)

When the power liftgate switch is pressed, the back door control unit terminal 23 receives the signal.

The back door control units checks door position through the rotary encoder.

When the back door control unit receives the signal, if the auto back door operating enable conditions are
met, it sends a signal through terminal 6 and grounds terminal 9 to sound the warning chime and sends a
signal to the BCM through terminal 4 to flash the hazard lamps.

The back door control unit supplies power to the magnetic clutch and the back door motor and move the
back door in the close direction. (At this time, it also executes speed control, input reverse, and anti-pinch
detection control.)

When the back door reaches the half-latch state, the half-latch switch detects this and the signal is sent to
the back door control unit terminal 22.

When the back door control unit receives the half latch switch signal, it switches OFF the back door motor
and the magnetic clutch and operates the cinch latch motor.

When the back door latch operates and full close is detected through terminal 14 of the back door control
unit, the cinch latch motor reverses to the neutral position and the back door auto closure operation ends
and the door is fully closed.
Remote Keyless Entry Operation (Fully Open → Fully Closed Operation)

When the remote keyless entry switch is pressed for at least 0.5 seconds, the back door control unit termi-
nal 21 receives the signal.

The back door control units checks door position through the rotary encoder.

When the back door control unit receives the signal, if the auto back door operating enable conditions are
met, it sends a signal through terminal 6 and grounds terminal 9 to sound the warning chime and sends a
signal to the BCM through terminal 4 to flash the hazard lamps.

The back door control unit supplies power to the magnetic clutch and the back door motor and move the
back door in the close direction. (At this time, it also executes speed control, input reverse, and anti-pinch
detection control.)

When the back door reaches the half-latch state, the half-latch switch detects this and the signal is sent to
the back door control unit terminal 22.

When the back door control unit receives the half latch switch signal, it switches OFF the back door motor
and the magnetic clutch and operates the cinch latch motor.

When the back door latch operates and full close is detected through terminal 14 of the back door control
unit, the cinch latch motor reverses to the neutral position and the back door auto closure operation ends
and the door is fully closed.

BL-104
AUTOMATIC BACK DOOR SYSTEM
Revision: August 20072004 QX56
Back Door Close Switch Operation (Fully Open → Fully Closed Operation)

When the back door close switch is pressed, the back door control unit terminal 8 receives the signal.

The back door control units checks back door disable switch terminal 13 status and door position (must be
fully opened), through rotary encoder and battery voltage.

When the back door control unit receives the signal, if the auto back door operating enable conditions are
met, it sends a signal through terminal 6 and grounds terminal 9 to sound the warning chime and sends a
signal to the BCM through terminal 4 to flash the hazard lamps.

The back door control unit supplies power to the magnetic clutch and the back door motor and move the
back door in the close direction. (At this time, it also executes speed control, input reverse, and anti-pinch
detection control.)

When the back door reaches the half-latch state, the half-latch switch detects this and the signal is sent to
the back door control unit terminal 22.

When the back door control unit receives the half latch switch signal, it switches OFF the back door motor
and the magnetic clutch and operates the cinch latch motor.

When the back door latch operates and full close is detected through terminal 14 of the back door control
unit, the cinch latch motor reverses to the neutral position and the back door auto closure operation ends
and the door is fully closed.
Reversal

If the power liftgate switch, remote keyless entry switch or the back door close switch is pressed during
back door power open and close operation, the back door will reverse direction.

If the outside handle switch is pulled during power open or power close, the power back door will automat-
ically stop and go to manual mode.
Anti-Pinch Function

During auto open or close operation, if an object is detected in the door's path, the back door operates in
the reverse direction until fully closed or open to prevent pinching.

During auto close operation, if an object is detected by the pinch strips in the door's path, the back door
operates in the open direction until it is fully open.

During auto cinch latch operation, if an object is detected by the pinch strips in the door's path, the back
door operates depending on the back door disable switch position. If the back door disable switch is in the
OFF position, the back door operates in the open direction until it is fully open. If the back door disable
switch is in the ON position, the back door will reverse only until the latch is fully released.

If the pinch strips are present but are not functioning properly (permanently sensing a pinch), the auto-
matic back door system will operate in the open direction only.

If the pinch strips are not connected to the automatic back door system, it will not operate.
Gas Stay Check

During each power open operation, the back door control unit monitors motor current draw to determine if
the gas stays are functioning properly.

If a failure of the gas stays is detected, the back door control unit will close the back door while sounding
the warning chime.
Warning Functions

The warning chime is sounded according to the back door operating state, operations, and conditions.