2004 INFINITI QX56 Factory Service Manual

manual radio set tyre pressure oil capacity compression ratio brake sensor spare tire

Page 281 of 3371

INFINITI QX56 2004 Factory Service Manual AT-210
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: August 20072004 QX56
8. DETECT MALFUNCTIONING ITEM
Check the malfunction items. If any items are damaged, repair or replace damaged parts. Refer to AT-

AT-210
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: August 20072004 QX56
8. DETECT MALFUNCTIONING ITEM
Check the malfunction items. If any items are damaged, repair or replace damaged parts. Refer to AT-68,
"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-63, "
Cruise Test - Part 1" , AT-65, "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- 9 0 , "
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-68,
"Symptom Chart" (Symptom No.11).
OK or NG
OK >> GO TO 9.
NG >> Repair or replace damaged parts.
A/T Does Not Shift: D3 → D4UCS002IS
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-201, "
Vehicle Does Not Creep Forward In “D” Position" , AT - 2 0 3 , "Vehicle Cannot Be
Started From D1" .
2. CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis. Refer to AT- 9 3 , "
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-175, "DTC P1841 ATF PRESSURE SWITCH 1" ,
AT-178, "
DTC P1843 ATF PRESSURE SWITCH 3" , AT-145, "DTC P1752 INPUT CLUTCH
SOLENOID VALVE" , AT-151, "DTC P1757 FRONT BRAKE SOLENOID VALVE" , AT-129, "DTC

Page 282 of 3371

INFINITI QX56 2004 Factory Service Manual TROUBLE DIAGNOSIS FOR SYMPTOMS
AT-211
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: August 20072004 QX56
P1705 THROTTLE POSITION SENSOR" , AT- 11 2 , "DTC P0720 VEHICLE SPEED SENSOR A/T
(REVOLUTION SENSOR)"

Page 283 of 3371

INFINITI QX56 2004 Factory Service Manual AT-212
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: August 20072004 QX56
7. CHECK A/T FLUID CONDITION
1. Remove oil pan. Refer to AT-241, "
Control Valve With TCM and A/T Fluid Temperature Sensor 2" .
2.

Page 284 of 3371

INFINITI QX56 2004 Factory Service Manual TROUBLE DIAGNOSIS FOR SYMPTOMS
AT-213
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: August 20072004 QX56
A/T Does Not Shift: D4 → D5UCS002IT
SYMPTOM:
The vehicle does not shift-up from the D4 to D5 gear

Page 285 of 3371

INFINITI QX56 2004 Factory Service Manual AT-214
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: August 20072004 QX56
5. DETECT MALFUNCTIONING ITEM
1. Check control valve with TCM. Refer to AT- 2 4 1 , "
Control Valve With TCM and A/T Fluid Tempera

Page 286 of 3371

INFINITI QX56 2004 Factory Service Manual TROUBLE DIAGNOSIS FOR SYMPTOMS
AT-215
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: August 20072004 QX56
10. PERFORM TCM INSPECTION
1. Perform TCM input/output signals inspection. Refer to AT-90, "
TCM Input/Ou

Page 287 of 3371

INFINITI QX56 2004 Factory Service Manual AT-216
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: August 20072004 QX56
3. CHECK LINE PRESSURE
Check line pressure at the engine stall point. Refer to AT- 5 9 , "
LINE
PRESSURE TEST" .
OK or NG
OK >> G

Page 288 of 3371

INFINITI QX56 2004 Factory Service Manual TROUBLE DIAGNOSIS FOR SYMPTOMS
AT-217
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: August 20072004 QX56
7. DETECT MALFUNCTIONING ITEM
Check the malfunction items. If any items are damaged, repair or replace d

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