2001 INFINITI QX4 Factory Service Manual

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Page 241 of 2395

INFINITI QX4 2001 Factory Service Manual 9. A/T Does Not Shift: D1®D2Or Does Not Kickdown: D 4®D2=NBAT0081SYMPTOM: A/T does not shift from D 1to D2at the specified speed. A/T does not shift from D 4to D2when depressing accelerator pedal fu

Page 242 of 2395

INFINITI QX4 2001 Factory Service Manual 4 CHECK THROTTLE POSITION SENSOR Check throttle position sensor. Refer to EC-174, ªDescriptionº. SAT142K OK or NG OK©GO TO 5. NG©Repair or replace throttle position sensor. 5 CHECK A/T FLUID CONDI

Page 243 of 2395

INFINITI QX4 2001 Factory Service Manual 7 CHECK SYMPTOM Check again. OK or NG OK©INSPECTION END NG©1. Perform TCM input/output signal inspection. 2. If NG, recheck TCM pin terminals for damage or loose connection with harness con- nector.

Page 244 of 2395

INFINITI QX4 2001 Factory Service Manual 10. A/T Does Not Shift: D2®D3=NBAT0082SYMPTOM: A/T does not shift from D 2to D3at the specified speed. 1 CHECK SYMPTOM Are ª7. Vehicle Does Not Creep Forward In ªDº, ª2º Or ª1º Positionº and

Page 245 of 2395

INFINITI QX4 2001 Factory Service Manual 4 CHECK A/T FLUID CONDITION 1. Remove oil pan. 2. Check A/T fluid condition. SAT171B OK or NG OK©GO TO 5. NG©GO TO 7. 5 DETECT MALFUNCTIONING ITEM 1. Remove control valve Assembly. Refer to AT-273.

Page 246 of 2395

INFINITI QX4 2001 Factory Service Manual 7 DETECT MALFUNCTIONING ITEM 1. Remove control valve Assembly. Refer to AT-273. 2. Check the following items: IShift valve B IShift solenoid valve B IPilot valve IPilot filter 3. Disassemble A/T. 4. C

Page 247 of 2395

INFINITI QX4 2001 Factory Service Manual 11. A/T Does Not Shift: D3®D4=NBAT0083SYMPTOM: IA/T does not shift from D 3to D4at the specified speed. IA/T must be warm before D 3to D4shift will occur. 1 CHECK SYMPTOM Are ª7. Vehicle Does Not Cr

Page 248 of 2395

INFINITI QX4 2001 Factory Service Manual 3 CHECK THROTTLE POSITION SENSOR Check throttle position sensor. Refer to EC-174, ªDescriptionº. SAT142K OK or NG OK©GO TO 4. NG©Repair or replace throttle position sensor. 4 CHECK A/T FLUID CONDI
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