2001 INFINITI QX4 Factory Service Manual

width ESP inoperative brake fluid headlamp park assist AUX

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Page 1553 of 2395

INFINITI QX4 2001 Factory Service Manual Trouble DiagnosesNBEL0184WORK FLOWNBEL0184S01
SEL101WA
*1: EL-364
*2: EL-369*3: EL-369
*4: EL-370*5: EL-379
WARNING:
IWhenever possible, set the system to ªDemonstration
modeº if INFINITI Communicat

Page 1554 of 2395

INFINITI QX4 2001 Factory Service Manual SEL532V
PRELIMINARY CHECKNBEL0184S021. Turn ignition switch ON.
2. Check ªMAYDAYº, ªINFORMATIONº, ªREDIALº and ªNO SER-
VICEº indicator lamps operation.
SEL516V
IIf no malfunction is detected,

Page 1555 of 2395

INFINITI QX4 2001 Factory Service Manual NOTE:
After replacing IVCS unit, set up the replaced IVCS unit. Refer
to ªSystem Setting (When IVCS Unit is Replaced.)º in EL-381.
SYMPTOM CHART 2 (BASED ON SYMPTOM)NBEL0184S04Before referencing thi

NOTE:
After replacing IVCS unit, set up the replaced IVCS unit. Refer
to ªSystem Setting (When IVCS Unit is Replaced.)º in EL-381.
SYMPTOM CHART 2 (BASED ON SYMPTOM)NBEL0184S04Before referencing this chart, confirm the operation of the indicator
lamps. Refer to ªPRELIMINARY CHECKº in EL-369. If the indica-
tors show the system is malfunctioning, perform the self-diagnosis
using CONSULT-II.
Symptom Diagnoses/service procedure Reference page
ªMAYDAYº, ªINFORMATIONº, ªRE-DIALº,
ªNO SERVICEº indicator lamps do not illu-
minate when ignition switch is turned to ON
position. (Bulb check is NG.)1. Power supply and ground circuit for IVCS unit check EL-371
2. Indicator lamps check EL-372
Mayday/Information call does not operate.1. IVCS switch check EL-373
2. INFINITI Communicator operation check in demonstration
modeEL-379
Remote door unlocking function does not
operate.1. Back door handle switch check EL-374
2. Remote door unlock function check EL-374
3. INFINITI Communicator operation check in demonstration
modeEL-379
Stolen vehicle tracking function does not
operate.1. Stolen vehicle tracking setting check
(Check whether the function is disabled or not.)EL-375
2. INFINITI Communicator operation check in demonstration
modeEL-379
Alarm notification function does not oper-
ate.1. Alarm notification setting check
(Check whether the function is disabled or not.)EL-375
2. INFINITI Communicator operation check in demonstration
modeEL-379
Hands free telephone cannot be operated
by using steering switch.
(Cellular phone operates properly by using
handset.)1. Telephone steering switch check EL-377
No sounds related to the telephone are
heard from Front RH speaker. (If the audio
does not operate properly, check the audio
system.)1. Check harness for open or short between IVCS unit and
audio unit.Ð
The ªNO SERVICEº indicator lamp is not
turned off. (Even if a contract with tele-
phone carrier has not been made, the indi-
cator lamp remains illuminated.)1. Make sure the vehicle is in an area with cellular service. Ð
2. Check cellular phone antenna feeder cable connection. Ð
Cellular phone does not operate properly.1. Check hand set connector connection. Ð
2. Check hand set. Ð
No sound is transmitted to the other party
by hands free telephone.1. Check harness for open or short between IVCS unit and
microphone.Ð
2. Replace microphone. (IVCS switch assembly) Ð
INFINITI COMMUNICATOR (IVCS)
Trouble Diagnoses (Cont'd)
EL-370

Page 1556 of 2395

INFINITI QX4 2001 Factory Service Manual 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

Page 1557 of 2395

INFINITI QX4 2001 Factory Service Manual INDICATOR LAMPS CHECK=NBEL0184S06
1 CHECK POWER SUPPLY FOR INDICATOR LAMPS
Check voltage between IVCS switch terminal 1 and ground.
SEL372X
OK or NG
OK©GO TO 2.
NG©Check the following.
I15A fuse [No

Page 1558 of 2395

INFINITI QX4 2001 Factory Service Manual IVCS SWITCH CHECK=NBEL0184S07
1 CHECK IVCS SWITCH INPUT SIGNAL
1. Turn ignition switch ªONº.
2. Select ªSWITCH MONITORº in ªDATA MONITORº mode.
3. Check each switch signal.
Condition:
When MAYDA

Page 1559 of 2395

INFINITI QX4 2001 Factory Service Manual BACK DOOR HANDLE SWITCH CHECK=NBEL0184S08
1 CHECK BACK DOOR HANDLE SWITCH INPUT SIGNAL
1. Turn ignition switch ON.
2. Select ªSWITCH MONITORº in ªDATA MONITORº mode.
3. Check the switch operation.

Page 1560 of 2395

INFINITI QX4 2001 Factory Service Manual SEL450W
How to perform function check.
1. Lock the doors with door lock/unlock switch on drivers door
trim.
2. Touch ªFUNCTION CHECKº.
3. Touch ªDOOR UNLOCKº.
SEL451W
4. Touch ªSTARTº. Then dri

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