2004 INFINITI QX56 battery

POWER DOOR LOCK SYSTEM
BL-37
C
D
E
F
G
H
J
K
L
MA
B
BL
Revision: August 20072004 QX56
2. CHECK HARNESS CONTINUITY
1. Disconnect BCM.
2. Check continuity between BCM connector (A) M18 terminal 30
and glass hatch switch connector (B) D710 terminal 2.
3. Check continuity between BCM connector M18 terminal 30 and
ground.
OK or NG
OK >> Glass hatch switch circuit is OK.
NG >> Repair or replace harness.
Front Door Lock Assembly LH (Actuator) CheckEIS002RK
1. CHECK DOOR LOCK ACTUATOR HARNESS
1. Turn ignition switch OFF.
2. Disconnect BCM and front door lock assembly LH (actuator).
3. Check continuity between BCM connector M20 terminals 59, 65
and front door lock assembly LH (actuator) connector D14 termi-
nals 2, 3.
4. Check continuity between BCM connector M20 terminals 59, 65
and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace harness.
2. CHECK DOOR LOCK ACTUATOR SIGNAL
1. Reconnect BCM.
2. Check voltage between BCM connector M20 terminals 59, 65
and ground.30 (Y/BR) - 2 (Y/BR) : Continuity should exist.
30 (Y/BR) - Ground : Continuity should not exist.
WIIA0754E
ConnectorTe r m i n a l s
(Wire color)ConnectorTe r m i n a l s
(wire color)Continuity
M2059 (G)
D142 (G) Yes
65 (V) 3 (V) Yes
Connector Terminals (Wire color) Continuity
M2059 (G)
GroundNo
65 (V) No
LIIA1574E
ConnectorTe r m i n a l s
(Wire color)
ConditionVoltage (V)
(Approx.)
(+) (-)
M2059 (G)
GroundDriver door lock/unlock
switch is turned to
UNLOCK0 → Battery voltage
for 300 ms
65 (V)Driver door lock/unlock
switch is turned to LOCK0 → Battery voltage
for 300 ms
LIIA1046E

POWER DOOR LOCK SYSTEM
BL-39
C
D
E
F
G
H
J
K
L
MA
B
BL
Revision: August 20072004 QX56
Front Door Lock Actuator RH CheckEIS002RL
1. CHECK FRONT DOOR LOCK ACTUATOR RH HARNESS
1. Turn ignition switch OFF.
2. Disconnect BCM and front door lock actuator RH.
3. Check continuity between BCM connector M20 terminals 65, 66
and front door lock actuator RH D114 terminals 2, 3.
4. Check continuity between BCM connector M20 terminals 65, 66
and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace harness.
2. CHECK FRONT DOOR LOCK ACTUATOR RH SIGNAL
1. Reconnect BCM.
2. Check voltage between BCM connector M20 terminals 65, 66
and ground.
OK or NG
OK >> Replace front door lock actuator RH. Refer to BL-132, "FRONT DOOR LOCK" .
NG >> Replace BCM. Refer to BCS-19, "
Removal and Installation of BCM" .
Terminal Continuity
65 (V) 3 (V) Yes
66 (G/Y) 2 (G/Y) Yes
Terminals (Wire color) Continuity
65 (V)
GroundNo
66 (G/Y) No
LIIA1479E
ConnectorTe r m i n a l s
(Wire color)
ConditionVoltage (V)
(Approx.)
(+) (-)
M2065 (V)
GroundDoor lock/unlock switch is
turned to LOCK0 → Battery voltage
for 300 ms
66 (G/Y)Door lock/unlock switch is
turned to UNLOCK0 → Battery voltage
for 300 ms
LIIA1048E

BL-40
POWER DOOR LOCK SYSTEM
Revision: August 20072004 QX56
Rear Door Lock Actuator RH/LH CheckEIS002RM
1. CHECK REAR DOOR LOCK ACTUATOR LH OR RH HARNESS
1. Turn ignition switch OFF.
2. Disconnect BCM and each door lock actuator.
3. Check continuity between BCM connector M20 terminals 65, 66
and rear door lock actuator RH/LH connectors terminals 2, 3.
4. Check continuity between BCM connector M20 terminals 65, 66
and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace harness.
2. CHECK DOOR LOCK ACTUATOR SIGNAL
1. Reconnect BCM.
2. Check voltage between BCM connector M20 terminals 65, 66
and ground.
OK or NG
OK >> Replace door lock actuator. Refer to BL-135, "REAR DOOR LOCK" .
NG >> Replace BCM. Refer to BCS-19, "
Removal and Installation of BCM" .
Terminal Continuity
65 (V) 3 (V) Yes
66 (G/Y) 2 (G/Y) Yes
Terminals (Wire color) Continuity
65 (V)
GroundNo
66 (G/Y) No
LIIA1480E
ConnectorTe r m i n a l s
(Wire color)
ConditionVoltage (V)
(Approx.)
(+) (-)
M2065 (V)
GroundDoor lock/unlock switch
is turned to LOCK0 → Battery voltage
for 300 ms
66 (G/Y)Door lock/unlock switch
is turned to UNLOCK0 → Battery voltage
for 300 ms
LIIA1048E

POWER DOOR LOCK SYSTEM
BL-41
C
D
E
F
G
H
J
K
L
MA
B
BL
Revision: August 20072004 QX56
Glass Hatch Lock Actuator CheckEIS005X6
1. CHECK GLASS HATCH LOCK ACTUATOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect glass hatch lock actuator.
3. Check continuity between glass hatch lock actuator connector
D711 terminal 1 and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace harness. Refer to BL-136, "
BACK
DOOR LOCK" .
2. CHECK GLASS HATCH LOCK ACTUATOR HARNESS
1. Disconnect BCM.
2. Check continuity between BCM connector M19 terminal 53 and
glass hatch lock actuator connector D711 terminal 3.
3. Check continuity between BCM connector M19 terminals 53 and
ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3. CHECK GLASS HATCH LOCK ACTUATOR SIGNAL
1. Reconnect BCM.
2. Check voltage between BCM connector M19 terminal 53 and
ground.
OK or NG
OK >> Replace glass hatch lock actuator.
NG >> Replace BCM. Refer to BCS-19, "
Removal and Installa-
tion of BCM" .
Terminal (Wire color) Continuity
1 (B) Ground Yes
LIIA1940E
Terminals (wire color) Continuity
53 (L/W) 3 (L/W) Yes
Terminals (Wire color) Continuity
53 (L/W) Ground No
LIIA1939E
ConnectorTe r m i n a l s
(Wire color)
ConditionVoltage (V)
(Approx.)
(+) (-)
M19 53 (L/W) GroundGlass hatch switch is
depressed0 → Battery voltage
for 300 ms
LIIA1938E

REMOTE KEYLESS ENTRY SYSTEM
BL-53
C
D
E
F
G
H
J
K
L
MA
B
BL
Revision: August 20072004 QX56
Terminals and Reference Value for BCMEIS002RT
Te r m i n a l Wire
ColorItem ConditionVoltage (V)
(Approx.)
11 O Ignition switch (ACC or ON) Ignition switch (ACC or ON position) Battery voltage
12 R/L Front door switch RH Door open (ON) → Door close (OFF) Battery voltage → 0
13 GR Rear door switch RH Door open (ON) → Door close (OFF) Battery voltage → 0
18 PRemote keyless entry
receiver ground—0
19 V/WRemote keyless entry
receiver (Power supply)Ignition switch OFF
20 G/WRemote keyless entry
receiver signal (Signal)Stand-by (keyfob buttons released)
When remote keyless entry receiver
receives signal from keyfob (keyfob
buttons pressed)
37 B/RKey switch and key lock sole-
noid (insert)Key inserted in IGN key cylinder (ON)
→ Key removed from IGN key cylinder
(OFF)Battery voltage → 0
38 W/LIgnition switch (ON or
START)Ignition switch (ON or START posi-
tion)Battery voltage
39 W CAN-H — —
40 R CAN-L — —
42 GR Glass hatch ajar switchGlass hatch open (ON) → Glass hatch
close (OFF) 0 → Battery voltage
43 R/BBack door latch (door ajar
switch)Door open (ON) → Door close (OFF) 0 → Battery voltage
47 SB Front door switch LH Door open (ON) → Door close (OFF) 0 → Battery voltage
48 R/Y Rear door switch LH Door open (ON) → Door close (OFF) 0 → Battery voltage
56 R/GBattery saver
(Interior lamp)Battery saver does operated → Does
not operated (ON → OFF)Battery voltage → 0
57 Y/R Battery power supply — Battery voltage
59 GFront door lock assembly LH
(actuator) (unlock)Door lock & unlock switch
(Neutral → Unlock)0 → Battery voltage
60 G/B Turn signal LHWhen doors are locked or unlocked
using keyfob (OFF → ON)
*10 → Battery voltage
61 G/Y Turn signal RHWhen doors are locked or unlocked
using keyfob (OFF → ON)
*10 → Battery voltage
LIIA1893E
LIIA1894E
LIIA1895E

BL-54
REMOTE KEYLESS ENTRY SYSTEM
Revision: August 20072004 QX56

*1: when hazard reminder is ON.

*2: when room lamp switch is in "DOOR" position.
Terminals and Reference Value for IPDM E/REIS002RU
*: when horn reminder is ON.62 R/W Step lamp LH and RHStep lamp ON 0
Step lamp OFF Battery voltage
63 L Room lampRoom lamp ON
*2Battery voltage
Room Lamp OFF
*20
65 V All door lock actuators (lock)Door lock & unlock switch
(Neutral → Lock)0 → Battery voltage
66 G/YFront door lock actuator RH,
rear door lock actuators LH/
RH and back door lock actu-
ator (unlock)Door lock & unlock switch
(Neutral → Unlock)0 → Battery voltage
67 B Ground — 0
69 W/RRear power window power
supply— Battery voltage
70 W/B Battery power supply — Battery voltage Terminal Wire
ColorItem ConditionVoltage (V)
(Approx.)
Terminal Wire
ColorItem ConditionVoltage (V)
(Approx.)
38 B Ground — 0
39 W CAN-H — —
40 R CAN-L — —
45 G/W Horn relayWhen doors locks are operated
using keyfob (OFF → ON) *Battery voltage → 0
59 B Ground — 0

REMOTE KEYLESS ENTRY SYSTEM
BL-59
C
D
E
F
G
H
J
K
L
MA
B
BL
Revision: August 20072004 QX56
Trouble Diagnosis ProcedureEIS002RY
1. Check the symptom and customer's requests.
2. Understand outline of system. Refer to BL-45, "
System Description" .
3. Confirm system operation.

Check that the power door lock system operates normally. Refer to BL-16, "POWER DOOR LOCK
SYSTEM" .

Check that the automatic back door system operates normally. Refer to BL-101, "AUTOMATIC BACK
DOOR SYSTEM" .
4. Perform pre-diagnosis inspection. Refer to BL-59, "
BCM Power Supply and Ground Circuit Check" .
5. Refer to trouble diagnosis chart by symptom, repair or replace any malfunctioning parts. Refer to BL-60,
"Trouble Diagnoses" .
6. Inspection End.
BCM Power Supply and Ground Circuit CheckEIS003EF
1. CHECK FUSES AND FUSIBLE LINK
Check the following BCM fuses and fusible link.
NOTE:
Refer to BL-44, "
Component Parts and Harness Connector Location" .
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of problem before installing new fuse, refer to PG-4,
"POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check voltage between BCM connectors M18, M20 terminals
11, 38, 57, 70 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
Component Parts Terminal No. (SIGNAL) Ampere No. Location
BCM57 (BAT power supply) 15A 22 Fuse block (J/B)
70 (BAT power supply) 50AfFuse and fusible link box
11 (ACC power supply) 10A 4 Fuse block (J/B)
38 (IGN power supply) 10A 59 Fuse and relay box
ConnectorTerminals
(Wire color)
Signal nameIgnition
switchVo l ta g e
(+) (–)
M2070 (W/B)
GroundBattery power
supplyOFFBattery
voltage
57 (Y/R)Battery power
supplyOFFBattery
voltage
M1811 ( O )ACC power
supplyACCBattery
voltage
38 (W/L)IGN power
supplyONBattery
voltage
WIIA0600E

BL-60
REMOTE KEYLESS ENTRY SYSTEM
Revision: August 20072004 QX56
3. CHECK GROUND CIRCUIT
Check continuity between BCM connector M20 terminal 67 and
ground.
OK or NG
OK >> Power supply and ground circuit is OK.
NG >> Repair or replace harness.
Trouble DiagnosesEIS002S0
SYMPTOM CHART
NOTE:

Always check the "Trouble Diagnosis Procedure" before troubleshooting. Refer to BL-59, "Trouble Diag-
nosis Procedure" .

Always check keyfob battery before replacing keyfob. Refer to BL-65, "Keyfob Battery and Function
Check" .

The panic alarm operation and power back door opener operation of remote keyless entry system do not
activate with the ignition key inserted in the ignition key cylinder.

Use Remote Keyless Entry Tester J-43241 (follow instructions on tester) to check operation of keyfob
before replacing keyfob.
ConnectorTe r m i n a l s
(Wire color)
Continuity
(+) (-)
M20 67 (B) Ground Yes
LIIA1040E
Symptom Diagnoses/service procedureReference
page
All functions of remote keyless entry system do not
operate.1. Keyfob battery and function check (use Remote Keyless Entry
Tester J-43241)
NOTE:
If the result of keyfob function check is OK, keyfob is not malfunc-
tioning.BL-65
2. Check BCM and keyless receiver.BL-66
The new ID of keyfob cannot be entered.1. Keyfob battery and function check (use Remote Keyless Entry
Tester J-43241)
NOTE:
If the result of keyfob function check is OK, keyfob is not malfunc-
tioning.BL-652. Key switch and key lock solenoid (insert) checkBL-62
3. Door switch checkBL-63
4. ACC power checkBL-68
5. Replace BCM.BCS-19
Door lock or unlock does not function.
(If the power door lock system does not operate
manually, check power door lock system. Refer to
BL-16, "
POWER DOOR LOCK SYSTEM" )1. Keyfob battery and function check (use Remote Keyless Entry
Tester J-43241)
NOTE:
If the result of keyfob function check is OK, keyfob is not malfunc-
tioning.BL-65
2. Replace BCM.BCS-19
Hazard and horn reminder does not activate prop-
erly when pressing lock or unlock button of keyfob.1. Check hazard and horn reminder mode with CONSULT-II
NOTE:
Hazard and horn reminder mode can be changed.
First check the hazard and horn reminder mode setting.BL-57
2. Door switch checkBL-63
3. Replace BCM.BCS-19