2006 INFINITI QX56 Factory Service Manual

coolant level tow jack points maintenance heating dead battery

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INFINITI QX56 2006 Factory Service Manual AT-198
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: November 20092006 QX56
8. DETECT MALFUNCTIONING ITEM
Check the malfunction items. If any items are damaged, repair or replace damaged parts. Refer to A

AT-198
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: November 20092006 QX56
8. DETECT MALFUNCTIONING ITEM
Check the malfunction items. If any items are damaged, repair or replace damaged parts. Refer to AT- 6 1 ,
"Symptom Chart" (Symptom No.11).
OK or NG
OK >> GO TO 9.
NG >> Repair or replace damaged parts.
9. CHECK SYMPTOM
Check again. Refer to AT- 5 6 , "
Cruise Test - Part 1" , AT- 5 8 , "Cruise Test - Part 2" .
OK or NG
OK >> INSPECTION END
NG >> GO TO 10.
10. PERFORM TCM INSPECTION
1. Perform TCM input/output signals inspection. Refer to AT- 8 3 , "
TCM Input/Output Signal Reference Val-
ues" .
2. If NG, recheck A/T assembly harness connector terminals for damage or loose connection with harness connector.
OK or NG
OK >> INSPECTION END
NG >> Repair or replace damaged parts.
11 . DETECT MALFUNCTIONING ITEM
Check the malfunction items. If any items are damaged, repair or replace damaged parts. Refer to AT- 6 1 ,
"Symptom Chart" (Symptom No.11).
OK or NG
OK >> GO TO 9.
NG >> Repair or replace damaged parts.
A/T Does Not Shift: D3 → D4ECS00CKD
SYMPTOM:
The vehicle does not shift-up from the D3 to D4 gear at the specified speed.
The vehicle does not shift-up from the D3 to D4 gear unless A/T is warmed up.
DIAGNOSTIC PROCEDURE
1. CONFIRM THE SYMPTOM
Check if vehicle creeps forward in “D ” position and vehicle can be started from D
1.
OK or NG
OK >> GO TO 2.
NG >> Refer to AT- 1 8 9 , "
Vehicle Does Not Creep Forward In “D” Position" , AT- 1 9 1 , "Vehicle Cannot Be
Started From D1" .
2. CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis. Refer to AT- 8 6 , "
SELF-DIAGNOSTIC RESULT MODE" .
Do the self-diagnostic results indicate ATF pressure switch 1, ATF pressure switch 3, front brake solenoid
valve, input clutch solenoid valve, accelerator pedal position sensor, vehicle speed sensor A/T (revolution sen-
sor) and vehicle speed sensor MTR?
YES >> Check the malfunctioning system. Refer to AT- 1 5 9 , "DTC P1841 ATF PRESSURE SWITCH 1" ,
AT- 1 6 1 , "
DTC P1843 ATF PRESSURE SWITCH 3" , AT- 1 3 9 , "DTC P1752 INPUT CLUTCH
SOLENOID VALVE" , AT- 1 4 3 , "DTC P1757 FRONT BRAKE SOLENOID VALVE" , AT- 1 2 4 , "DTC

Page 274 of 3383

INFINITI QX56 2006 Factory Service Manual TROUBLE DIAGNOSIS FOR SYMPTOMSAT-199
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M A
B
AT
Revision: November 2009 2006 QX56
P1705 THROTTLE POSITION SENSOR" , AT- 111 , "DTC P0720 VEHICLE SPEED SENSOR A/T
(REVOLUTION SENSOR)" ,

Page 275 of 3383

INFINITI QX56 2006 Factory Service Manual AT-200
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: November 20092006 QX56
7. CHECK A/T FLUID CONDITION
1. Remove oil pan. Refer to AT- 2 3 0 , "
Control Valve With TCM and A/T Fluid Temperature Sensor

Page 276 of 3383

INFINITI QX56 2006 Factory Service Manual TROUBLE DIAGNOSIS FOR SYMPTOMSAT-201
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Revision: November 2009 2006 QX56
A/T Does Not Shift: D4 → D5ECS00CKE
SYMPTOM:
The vehicle does not shift-up from the D4 to D5 gear a

Page 277 of 3383

INFINITI QX56 2006 Factory Service Manual AT-202
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: November 20092006 QX56
5. DETECT MALFUNCTIONING ITEM
1. Check control valve with TCM. Refer to AT- 2 3 0 , "
Control Valve With TCM and A/T Fluid Tempe

Page 278 of 3383

INFINITI QX56 2006 Factory Service Manual TROUBLE DIAGNOSIS FOR SYMPTOMSAT-203
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Revision: November 2009 2006 QX56
10. PERFORM TCM INSPECTION
1. Perform TCM input/output signals inspection. Refer to AT- 8 3 , "
TCM I

Page 279 of 3383

INFINITI QX56 2006 Factory Service Manual AT-204
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: November 20092006 QX56
3. CHECK LINE PRESSURE
Check line pressure at the engine stall point. Refer to AT- 5 2 , "
LINE
PRESSURE TEST" .
OK or NG
OK >>

Page 280 of 3383

INFINITI QX56 2006 Factory Service Manual TROUBLE DIAGNOSIS FOR SYMPTOMSAT-205
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Revision: November 2009 2006 QX56
7. DETECT MALFUNCTIONING ITEM
Check the malfunction items. If any items are damaged, repair or replace

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