2001 INFINITI QX4 Battery terminal

SEL601W
DIAGNOSTIC PROCEDURE 1=NBEL0214S04(Power supply and ground circuit for driver's seat control unit)
Power Supply Circuit CheckNBEL0214S0401Check voltage between seat control unit LH terminal 1 and ground.
TerminalsIgnition switch position
OFF ACC ON START
1 - Ground Battery voltage
If NG, check the following.
I40A fusible link (letterf, located in the fuse and fusible link box)
ICircuit breaker
IHarness for open or short between circuit breaker and seat
control unit LH
SEL602W
Ground Circuit CheckNBEL0214S0402Check continuity between seat control unit LH terminal 33 and
ground.
Terminals Continuity
33 - Ground Yes
AUTOMATIC DRIVE POSITIONER
Trouble Diagnoses (Cont'd)
EL-202

SEL304X
MAIN POWER SUPPLY AND GROUND CIRCUIT CHECK=NBEL0110S02Main Power Supply Circuit CheckNBEL0110S0201
Terminal Ignition switch
(+) (þ) OFF ACC ON
10
GroundBattery
voltageBattery
voltageBattery
voltage
11
SEL013W
Ground Circuit CheckNBEL0110S0202
Terminals Continuity
16 - Ground Yes
POWER DOOR LOCK
Trouble Diagnoses (Cont'd)
EL-262

REMOTE CONTROLLER BATTERY CHECK=NBEL0115S02
1 CHECK REMOTE CONTROLLER BATTERY
Remove battery (refer to EL-293) and measure voltage across battery positive and negative terminals, (+) and (þ).
Voltage [V]:
2.5 - 3.0
NOTE:
Remote controller does not function if battery is not set correctly.
SEL277V
OK or NG
OK©Check remote controller battery terminals for corrosion or damage.
NG©Replace battery.
MULTI-REMOTE CONTROL SYSTEM
Trouble Diagnoses (Cont'd)
EL-278

System DescriptionNBEL0120DESCRIPTIONNBEL0120S011. Operation FlowNBEL0120S0101
SEL334W
2. Setting The Theft Warning SystemNBEL0120S0102Initial condition
1) Close all doors.
2) Close hood and glass hatch.
Disarmed phase
When the theft warning system is in the disarmed phase, the security indicator lamp blinks every 2.6 seconds.
Pre-armed phase and armed phase
The theft warning system turns into the ªpre-armedº phase when hood, glass hatch and all doors are closed
and the doors are locked by key or multi-remote controller. (The security indicator lamp illuminates.)
After about 30 seconds, the system automatically shifts into the ªarmedº phase (the system is set). (The
security indicator lamp blinks every 2.6 seconds.)
3. Canceling The Set Theft Warning SystemNBEL0120S0103When the following 1) or 2) operation is performed, the armed phase is canceled.
1) Unlock the doors with the key or multi-remote controller.
2) Open the glass hatch with the key.
4. Activating The Alarm Operation of The Theft Warning SystemNBEL0120S0104Make sure the system is in the armed phase. (The security indicator lamp blinks every 2.6 seconds.)
When any of the following operations is performed, the system sounds the horns and flashes the headlamps
for about 50 seconds.
1) Engine hood, glass hatch or any door is opened before unlocking door with key or multi-remote control-
ler.
2) Door is unlocked without using key or multi-remote controller.
3) Disconnecting and connecting the battery connector before canceling armed phase.
POWER SUPPLY AND GROUNDNBEL0120S07Power is supplied at all times
Ithrough 7.5A fuse [No. 24, located in the fuse block (J/B)]
Ito security indicator lamp terminal 1, and
Ito smart entrance control unit terminal 10.
With the ignition switch in the ON or START position, power is supplied
Ithrough 7.5A fuse [No. 11, located in the fuse block (J/B)]
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
THEFT WARNING SYSTEM
System Description
EL-295

SEL336X
POWER SUPPLY AND GROUND CIRCUIT CHECKNBEL0123S03Power Supply Circuit CheckNBEL0123S0301
Terminals Ignition switch position
(+) (þ) OFF ACC ON
10 GroundBattery
voltageBattery
voltageBattery
voltage
21 Ground 0VBattery
voltageBattery
voltage
33 Ground 0V 0VBattery
voltage
SEL013W
Ground Circuit CheckNBEL0123S0302
Terminals Continuity
16 - Ground Yes
THEFT WARNING SYSTEM
Trouble Diagnoses (Cont'd)
EL-308

Smart Entrance Control Unit Inspection TableNBEL0126
Terminal
No.Wire
colorConnections Operated conditionVoltage
(Approximate
values)
2 G/B Rear window defogger relay OFF,ON (Ignition key is in ªONº position) 0V,12V
4 PU/W Theft warning horn/lamp relay When panic alarm is operated using remote controller 12V,0V
5 R/YHeadlamp battery saver control
unitWhen headlamp battery saver timer is operated 12V
7 P Multi-remote control relay When doors are locked using remote controller 12V,0V
8 R/B Interior lampWhen interior lamp is operated using remote controller.
(Lamp switch in ªDOORº position)0V,12V
10 G/R Power source (Fuse) Ð 12V
11 W/R Power source (C/B) Ð 12V
13 W/PU Driver door lock actuator
Door lock & unlock switchFree 0V
14 Y/B Passenger door lock actuator Unlocked 12V
15 L Door lock actuators Door lock & unlock switchFree 0V
Locked 12V
16 B Ground Ð Ð
17 R/W Battery saver (Interior lamp) Battery saver is not operate,Operate 12V,0V
19 LG/B Horn relayWhen doors are locked using remote controller with horn
chirp mode.12V,0V
21 G/W Ignition switch (ACC) ªACCº position 12V
22 B/P Seat belt buckle switch Unfasten,Fasten (Ignition key is in ªONº position) 0V,12V
23 BR Door lock & unlock switches Neutral,Locks 5V,0V
26 Y/R Rear door unlock sensors All doors are locked,One or more doors are unlocked 5V,0V
27 Y/B Hood open signal ON (Open),OFF (Closed) 0V,5V
28 R/L Rear and back door switches OFF (Closed),ON (Open) 5V,0V
29 G/R Driver door switch OFF (Closed),ON (Open) 5V,0V
30 LG Door key cylinder unlock switch OFF (Neutral),ON (Unlocked) 12V,0V
31 BR/Y Theft warning indicator Goes off,Illuminates 12V,0V
32 W/R Ignition key switch (Insert) key inserted,key removed from IGN key cylinder 12V,0V
33 W/B Ignition switch (ON) Ignition key is in ªONº position 12V
35 LG/R Door lock & unlock switches Neutral,Unlocks 5V,0V
36 Y/G Driver door unlock sensor Driver door: Locked,Unlocked 5V,0V
37 Y/L Passenger door unlock sensor Passenger door: Locked,Unlocked 5V,0V
38 L/W Glass hatch switch ON (Open),OFF (Closed) 0V,12V
39 OR Rear window defogger switch OFF,ON 5V,0V
40 Y Passenger door switch OFF (Closed),ON (Open) 5V,0V
41 Y Door key cylinder lock switch OFF (Neutral),ON (Locked) 5V,0V
42 G/B Back door key unlock switch OFF (Neutral),ON (Unlock) 5V,0V
SMART ENTRANCE CONTROL UNIT
Smart Entrance Control Unit Inspection Table
EL-324

5 CHECK COMMUNICATION LINE OPEN CIRCUIT
1. Disconnect ECM connector.
2. Check harness continuity between ECM terminal 116 and IMMU terminal 1.
SEL305WD
OK or NG
OK©GO TO 6.
NG©Repair harness or connector.
Ref. part No. C4
6 CHECK COMMUNICATION LINE BATTERY SHORT CIRCUIT
1. Turn ignition ON.
2. Check voltage between ECM terminal 116 or IMMU terminal 1 and ground.
SEL306WD
OK or NG
OK©GO TO 7.
NG©Communication line is short-circuited with battery voltage line or ignition switch ON line.
Repair harness or connectors.
Ref. part No. C4
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM Ð NATS)
Trouble Diagnoses (Cont'd)
EL-339

SEL976VA
POWER SUPPLY AND GROUND CIRCUIT FOR IVCS
UNIT CHECK
NBEL0184S05Main Power Supply Circuit CheckNBEL0184S0501
Terminal Ignition switch
(+) (þ) OFF ACC ON
18 GroundBattery volt-
ageBattery volt-
ageBattery volt-
age
2 Ground 0V 0VBattery volt-
age
If NG, check the following:
I15A fuse [No. 4, located in fuse and fusible link box]
I7.5A fuse [No. 11, located in fuse block (J/B)]
IHarness for open or short between fuse and IVCS unit
SEL519VB
Ground Circuit CheckNBEL0184S0502
Terminals Continuity
17 - Ground Yes
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
INFINITI COMMUNICATOR (IVCS)
Trouble Diagnoses (Cont'd)
EL-371