2001 INFINITI QX4 IDX

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Page 1868 of 2395

INFINITI QX4 2001  Factory Service Manual RHA461GA
SHA278FA
6. Check Temperature IncreaseNBHA0019S0206Without Navigation System
IPress the temperature increase button until 32ÉC (85ÉF) is
displayed.
ICheck for hot air at discharge air outle

Page 1870 of 2395

INFINITI QX4 2001  Factory Service Manual A/C System
TROUBLE DIAGNOSIS PROCEDURE FOR A/C SYSTEM=NBHA0089SYMPTOM:
IA/C system does not come on.
INSPECTION FLOW
RHA866H
*1: HA-72 *2: HA-66 *3: HA-142
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT

Page 1872 of 2395

INFINITI QX4 2001  Factory Service Manual RHA817H
DIAGNOSTIC PROCEDURENBHA0107SYMPTOM:
IA/C system does not come on.
RHA818H
Auto Amp. CheckNBHA0107S01Check power supply circuit for auto amp. with ignition switch ON.
Measure voltage across te

Page 1874 of 2395

INFINITI QX4 2001  Factory Service Manual Mode Door Motor
TROUBLE DIAGNOSIS PROCEDURE FOR MODE DOOR MOTOR (LAN)=NBHA0090SYMPTOM:
IAir outlet does not change.
IMode door motor does not operate normally.
Inspection FlowNBHA0090S01Without Naviga

Page 1876 of 2395

INFINITI QX4 2001  Factory Service Manual SYSTEM DESCRIPTION=NBHA0052Component PartsNBHA0052S01Mode door control system components are:
1) Auto amp.
2) Mode door motor (LCU)
3) In-vehicle sensor
4) Ambient sensor
5) Sunload sensor
6) Intake s

Page 1878 of 2395

INFINITI QX4 2001  Factory Service Manual 1 CHECK POWER SUPPLY FOR AUTO AMP. (LCU) SIDE
Do approx. 12 volts exist between auto amp. (LCU) harness terminal No. 21 and body ground?
RHA819H
NOTE:
If the result is NG or No after checking circuit

Page 1880 of 2395

INFINITI QX4 2001  Factory Service Manual 6 CHECK MOTOR OPERATION
Disconnect and reconnect the motor connector and confirm the motor operation.
OK or NG
OK (Return to operate
normally)©Poor contacting the motor connector
NG (Does not operate

Page 1882 of 2395

INFINITI QX4 2001  Factory Service Manual With Navigation SystemNBHA0098S0102
RHA871H
*1: HA-44
*2: HA-129
*3: HA-132
*4: HA-135
*5: HA-141*6: STEP-BY-STEP PROCEDURE
(HA-45), see No. 13.
*7: HA-78
*8: HA-85
*9: HA-85*10: HA-66
*12: HA-66
*13: