2001 INFINITI QX4 Factory Service Manual

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Page 1849 of 2395

INFINITI QX4 2001 Factory Service Manual 11 CHECK IN-VEHICLE SENSOR Press(DEF) switch the second time, temperature detected by in-vehicle sensor is indicated on the display screen. ECON shown in display indicates negative temperature reading

Page 1850 of 2395

INFINITI QX4 2001 Factory Service Manual 13 CHECK MALFUNCTIONING SENSOR Refer to the following chart for malfunctioning code No. (If two or more sensors malfunction, corresponding code Nos. blink respectively two times.) MTBL0083 *1: Conduct

Page 1851 of 2395

INFINITI QX4 2001 Factory Service Manual 14 CHECK MALFUNCTIONING DOOR MOTOR POSITION SWITCH Mode or (and) intake door motor position switch(es) is (are) malfunctioning. (If two or more mode or intake doors are out of order, corresponding cod

Page 1852 of 2395

INFINITI QX4 2001 Factory Service Manual AUXILIARY MECHANISM: TEMPERATURE SETTING TRIMMER=NBHA0021S03Without Navigation SystemNBHA0021S0301The trimmer compensates for differences in range of±3ÉC (±6ÉF) between temperature setting (displa

Page 1853 of 2395

INFINITI QX4 2001 Factory Service Manual INTRODUCTION AND GENERAL DESCRIPTIONNBHA0021S04The self-diagnostic system diagnoses sensors, door motors, blower motor, etc. by system line. Refer to appli- cable sections (items) for details. Shiftin

Page 1854 of 2395

INFINITI QX4 2001 Factory Service Manual STEP-BY-STEP PROCEDURENBHA0021S05With Navigation SystemNBHA0021S0501 1 SET IN SELF-DIAGNOSTIC MODE 1. Turn ignition switch ON. 2. Set in self-diagnostic mode as follows. Within 10 seconds after starti

Page 1855 of 2395

INFINITI QX4 2001 Factory Service Manual 5 STEP 2 - SENSOR CIRCUITS ARE CHECKED FOR OPEN OR SHORT CIRCUIT Turn temperature dial clockwise. Does code No. appear on the display? RHA970DB YesorNo Ye s©GO TO 6. No©GO TO 14. 6 STEP 3 - MODE DOO

Page 1856 of 2395

INFINITI QX4 2001 Factory Service Manual 7 STEP 4 - OPERATION OF EACH ACTUATOR IS CHECKED Turn temperature dial clockwise. Engine running. Press DEF switch, code No. of each actuator test is indicated on the display. RHA495A ©GO TO 8. GI MA
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