INFINITI QX56 2011 Factory Service Manual

SELECTOR LEVER POSITION INDICATORTM-163
< DTC/CIRCUIT DIAGNOSIS > [7AT: RE7R01B]
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YES >> Check intermittent incident. Refer to GI-40, "Intermittent Incident".
NO >> Repair or replace damaged parts.
9.CHECK POWER SOURCE (PART 2)
1. Turn ignition switch OFF.
2. Disconnect A/T shift selector connector.
3. Turn ignition switch ON.
4. Check voltage between A/T shift selector vehicle side harness connector terminals.
Is the inspection result normal?
YES >> GO TO 10.
NO >> Check illumination circuit. Refer to INL-34, "
Wiring Diagram".
10.CHECK SHIFT POSITION SWITCH (PART 2)
1. Disconnect shift position switch connector.
2. Check continuity between A/T shift selector connec tor terminals and shift position switch connector termi-
nals.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace damaged parts.
Component Inspection (Selecto r Lever Position Indicator)INFOID:0000000006226889
1.CHECK SELECTOR LEVER POSITION INDICATOR
Check that selector lever position indicator lamps turn on.
CAUTION:
Connect the fuse between the termina ls when applying the voltage.
A/T shift selector vehicle side harness connector
Condition Voltage (Approx.)
Connector Te r m i n a l
+ −
M57 9 10 Lighting switch 1ST Battery voltage
A/T shift selector connector Shift position switch connector Continuity
Connector Terminal Connector Terminal
M57 9
M281 9Existed
1, 2, 3, 4, 5, 8, 10, 12 Not existed
10 8Existed
1, 2, 3, 4, 5, 9, 10, 12 Not existed
Shift position switch harness connector Condition Status
Te r m i n a l
+ (fuse) −
110 Apply 12 V direct current between
terminals 1 and 10.
“M” mode indicato
r lamp turns on.
2
12Apply 12 V direct current between
terminals 2 and 12.
“P” position indicator lamp turns on.
3 Apply 12 V direct current between
terminals 3 and 12. “R” position indica
tor lamp turns on.
4 Apply 12 V direct current between
terminals 4 and 12.
“D” position indica
tor lamp turns on.
5 Apply 12 V direct current between
terminals 5 and 12. “N” position indica
tor lamp turns on.
98 Apply 12 V direct current between
terminals 9 and 8. Illumination lamp turns on.
Revision: 2010 May2011 QX56

TM-164
< DTC/CIRCUIT DIAGNOSIS >[7AT: RE7R01B]
SELECTOR LEVER POSITION INDICATOR
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace the selector lever position indicator. Refer to
TM-180, "
Removal and Installation".
Revision: 2010 May2011 QX56

SYSTEM SYMPTOMTM-165
< SYMPTOM DIAGNOSIS > [7AT: RE7R01B]
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SYMPTOM DIAGNOSIS
SYSTEM SYMPTOM
Symptom TableINFOID:0000000006226890
 The diagnostics item numbers show the sequence for inspection. Inspect in order from item 1.
 Perform diagnoses of symptom table 1 before symptom table 2.
SYMPTOM TABLE 1
Symptom Diagnostic item
Control cable
Output speed sensor
Vehicle speed signal
Accelerator pedal position sensor
Engine speed signal
Input speed sensor
A/T fluid temperature sensor
Battery voltage
Transmission range switch
Manual mode switch
Stop lamp switch
Line pressure solenoid valve
Torque converter solenoid valve
Low brake solenoid valve
Front brake solenoid valve
High and low reverse clutch solenoid valve
Input clutch solenoid valve
Direct clutch solenoid valve
2346 brake solenoid valve
Anti-interlock solenoid valve
Starter relay
CAN communication
TM-101
TM-110TM-138TM-137TM-112TM-109TM-107TM-151TM-106TM-144TM-159TM-131TM-128TM-148TM-136TM-147TM-133TM-150TM-149TM-132TM-104TM-103
Poor
perfor-
mance
Driving
perfor-
manceShift point is high in “D” position. 1 2 3
Shift point is low in “D” position. 1 2
Large
shock
When
shifting
gears →
“D” position4 7665 32 31
→ “R” position 4 7 6 6 5 3 2 1
1GR ⇔ 2GR 4 2544 3 1
2GR ⇔ 3GR 4 2544 3 1
3GR ⇔ 4GR 4 2544 3 3 1
4GR ⇔ 5GR 4 2544 3 3 1
5GR ⇔ 6GR 4 2544 33 1
6GR ⇔ 7GR 4 2544 3 3 1
Downshift when
accelerator ped-
al is depressed 3 2433 1
Upshift when ac-
celerator pedal
is released 3 2433 1
Lock-up 4 2444 3 1
Judder Lock-up 2 1 1 4 3
Strange noise In “R” position 2 1
In “N” position 2 1
In “D” position 2 1
Engine at idle 2 1
Revision: 2010 May2011 QX56

TM-166
< SYMPTOM DIAGNOSIS >[7AT: RE7R01B]
SYSTEM SYMPTOM
SymptomDiagnostic item
Control cable
Output speed sensor
Vehicle speed signal
Accelerator pedal position sensor
Engine speed signal
Input speed sensor
A/T fluid temperature sensor
Battery voltage
Transmission range switch
Manual mode switch
Stop lamp switch
Line pressure solenoid valve
Torque converter solenoid valve
Low brake solenoid valve
Front brake solenoid valve
High and low reverse clutch solenoid valve
Input clutch solenoid valve
Direct clutch solenoid valve
2346 brake solenoid valve
Anti-interlock solenoid valve
Starter relay
CAN communication
TM-101
TM-110TM-138TM-137TM-112TM-109TM-107TM-151TM-106TM-144TM-159TM-131TM-128TM-148TM-136TM-147TM-133TM-150TM-149TM-132TM-104TM-103
Func-
tion
trouble
Gear
does no
change “D” position Locks in 1GR 1 1 1 1
Locks in 2GR
Locks in 3GR
Locks in 4GR
Locks in 5GR 1
Locks in 6GR
Locks in 7GR
1GR
→ 2GR 1 1 1 1
2GR → 3GR 1
3GR → 4GR 2 22 2222 1
4GR → 5GR 1 1
5GR → 6GR 1
6GR → 7GR 1 1 1 1 1
5GR → 4GR 1
4GR → 3GR 1 1 1
3GR → 2GR 1 1
2GR → 1GR 1 1 1
Does not lock-up 2 22245 32222222 2 2 1
“M” posi-
tion 1GR
⇔ 2GR 3 33 32 3333333 3 3 1
2GR ⇔ 3GR 3 33 32 3333333 3 3 1
3GR ⇔ 4GR 3 33 32 3333333 3 3 1
4GR ⇔ 5GR 3 33 32 3333333 3 3 1
5GR ⇔ 6GR 3 33 32 3333333 3 3 1
6GR ⇔ 7GR 3 33 32 3333333 3 3 1
Revision: 2010 May2011 QX56

SYSTEM SYMPTOMTM-167
< SYMPTOM DIAGNOSIS > [7AT: RE7R01B]
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Symptom Diagnostic item
Control cable
Output speed sensor
Vehicle speed signal
Accelerator pedal position sensor
Engine speed signal
Input speed sensor
A/T fluid temperature sensor
Battery voltage
Transmission range switch
Manual mode switch
Stop lamp switch
Line pressure solenoid valve
Torque converter clutch solenoid valve
Low brake solenoid valve
Front brake solenoid valve
High and low reverse clutch solenoid valve
Input clutch solenoid valve
Direct clutch solenoid valve
2346 brake solenoid valve
Anti-interlock solenoid valve
Starter relay
CAN communication
TM-101
TM-110TM-138TM-137TM-112TM-109TM-107TM-151TM-106TM-144TM-159TM-131TM-128TM-148TM-136TM-147TM-133TM-150TM-149TM-132TM-104TM-103
Func-
tion trou-
ble
Poor
shiftingSlip
When
shifting
gears1GR
⇔ 2GR 3 3 3 4 2 2 1
2GR ⇔ 3GR 3 3 3 4 2 2 1
3GR ⇔ 4GR 3 3 3 4 2 2 2 2 1
4GR ⇔ 5GR 3 3 3 4 2 2 2 1
5GR ⇔ 6GR 3 3 3 4 2 2 2 1
6GR ⇔ 7GR 3 3 3 4 2 2 2 1
Engine
brake
does
not
work “D” position
→ “M” posi-
tion 5556423 33 1
“M” po-
sition 7GR
→ 6GR 5 5 5 6 4 2 3 3 3 1
6GR → 5GR 5 5 5 6 4 2 3 3 3 1
5GR → 4GR 5 5 5 6 4 2 3 3 3 1
4GR → 3GR 5 5 5 6 4 2 3 3 3 3 1
3GR → 2GR 5 556423 33 1
2GR → 1GR 5 5 5 6 4 2 3 3 3 1
Revision: 2010 May2011 QX56

TM-168
< SYMPTOM DIAGNOSIS >[7AT: RE7R01B]
SYSTEM SYMPTOM
Func-
tion trou-
blePoor
power
trans-
mission
Slip With selector
lever in “D”
position, ac-
celeration is
extremely
poor.
53 334 2 2 2 1
With selector
lever in “R”
position, ac-
celeration is
extremely
poor. 53 334 2 2 2 1
While starting
off by acceler-
ating in 1GR,
engine races. 3 334 2 2 2 1
While acceler-
ating in 2GR,
engine races. 3 334 2 2 22 1
While acceler-
ating in 3GR,
engine races. 3 334 2 2 22 1
While acceler-
ating in 4GR,
engine races. 3 334 2 2 22 1
While acceler-
ating in 5GR,
engine races. 3 334 2 222 2 1
While acceler-
ating in 6GR,
engine races. 3 334 2 22221
While acceler-
ating in 7GR,
engine races. 3 334 2 2 22 2 1
Lock-up 3 334 2 2 1
No creep at
all. 111111111
Extremely
large creep. 1
Symptom
Diagnostic item
Control cable
Output speed sensor
Vehicle speed signal
Accelerator pedal position sensor
Engine speed signal
Input speed sensor
A/T fluid temperature sensor
Battery voltage
Transmission range switch
Manual mode switch
Stop lamp switch
Line pressure solenoid valve
Torque converter clutch solenoid valve
Low brake solenoid valve
Front brake solenoid valve
High and low reverse clutch solenoid valve
Input clutch solenoid valve
Direct clutch solenoid valve
2346 brake solenoid valve
Anti-interlock solenoid valve
Starter relay
CAN communication
TM-101
TM-110TM-138TM-137TM-112TM-109TM-107TM-151TM-106TM-144TM-159TM-131TM-128TM-148TM-136TM-147TM-133TM-150TM-149TM-132TM-104TM-103
Revision: 2010 May2011 QX56

SYSTEM SYMPTOMTM-169
< SYMPTOM DIAGNOSIS > [7AT: RE7R01B]
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SYMPTOM TABLE 2
Symptom Diagnostic item
Control cable
Output speed sensor
Vehicle speed signal
Accelerator pedal position sensor
Engine speed signal
Input speed sensor
A/T fluid temperature sensor
Battery voltage
Transmission range switch
Manual mode switch
Stop lamp switch
Line pressure solenoid valve
Torque converter clutch solenoid valve
Low brake solenoid valve
Front brake solenoid valve
High and low reverse clutch solenoid valve
Input clutch solenoid valve
Direct clutch solenoid valve
2346 brake solenoid valve
Anti-interlock solenoid valve
Starter relay
CAN communication
TM-101
TM-110TM-138TM-137TM-112TM-109TM-107TM-151TM-106TM-144TM-159TM-131TM-128TM-148TM-136TM-147TM-133TM-150TM-149TM-132TM-104TM-103
Function
trouble
Power transmis-
sion cannot be
performed Vehicle cannot run in all
position.
3 2 111111111
Driving is not possible in
“D” position. 3 2 111111111
Driving is not possible in
“R” position. 32111
Engine stall 4 5 5 6 3 2 1
Engine stalls when selec-
tor lever shifted “N” → “D”
or “R”. 455 3 2 1
Engine does not start in
“N” or “P” position. 312 1
Engine starts in position
other than “N” or “P”. 32 1
Poor operation Vehicle does not enter
parking condition.
12
Parking condition is not
cancelled. 12
Vehicle runs with A/T in
“P” position. 12
Vehicle moves forward
with the “R” position. 12
Vehicle runs with A/T in
“N” position. 12
Vehicle moves backward
with the “D” position. 12
Revision: 2010 May2011 QX56

TM-170
< SYMPTOM DIAGNOSIS >[7AT: RE7R01B]
SYSTEM SYMPTOM
*: Parts behind drum support is impossible to perform inspection by disassembly. Refer to
TM-16, "TRANSMISSION : Cross-Sectional
View".Symptom
Diagnostic item
Oil pump
Torque converter
Low brake*
Front brake
High and low reverse clutch
Input clutch
Direct clutch
2346 brake
Reverse brake
1st one-way clutch
2nd one-way clutch
gear
control valve
Parking component
TM-270
TM-211TM-211TM-211TM-292TM-282TM-294TM-270TM-211TM-211TM-287TM-211TM-182TM-211
Poor
perfor-
mance
Driving
perfor-
mance Shift point is high in “D” position.
Shift point is low in “D” position.
Large
shock
When
shifting
gears →
“D” position 1 2 2
→ “R” position 1 1 2
1GR ⇔ 2GR 1 2
2GR ⇔ 3GR 1 2
3GR ⇔ 4GR 2 1 2
4GR ⇔ 5GR 1 1 2
5GR ⇔ 6GR 1 1 2
6GR ⇔ 7GR 1 1 2
Downshift when accel-
erator pedal is de-
pressed 211111 11 2
Upshift when accelera-
tor pedal is released 211111 11 2
Lock-up 1 2
Judder Lock-up 1 2
Strange noise In “R” position 1 1 1 1 2
In “N” position 1 1 1 2
In “D” position 1 1 1 1 2
Engine at idle 1 1 1 2
Revision: 2010 May2011 QX56

SYSTEM SYMPTOMTM-171
< SYMPTOM DIAGNOSIS > [7AT: RE7R01B]
C
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G H
I
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K L
M A
B
TM
N
O P
*: Parts behind drum support is impossible to perform inspection by disassembly. Refer to TM-16, "TRANSMISSION : Cross-Sectional
View".Symptom
Diagnostic item
Oil pump
Torque converter
Low brake*
Front brake
High and low reverse clutch
Input clutch
Direct clutch
2346 brake
Reverse brake
1st one-way clutch
2nd one-way clutch
gear
control valve
Parking component
TM-270
TM-211TM-211TM-211TM-292TM-282TM-294TM-270TM-211TM-211TM-287TM-211TM-182TM-211
Func-
tion
trouble
Gear
does no
change“D” posi-
tion Locks in 1GR 1 1 1 2
Locks in 2GR
1
Locks in 3GR 1
Locks in 4GR 1
Locks in 5GR 1
Locks in 6GR 1
Locks in 7GR 1
1GR → 2GR 1 1 1 2
2GR → 3GR 1 2
3GR → 4GR 2111 2
4GR → 5GR 1 1 2
5GR → 6GR 1 2
6GR → 7GR 2111 2
5GR → 4GR 1 2
4GR → 3GR 2 1 2
3GR → 2GR 1 1 2
2GR → 1GR 1 1 1 2
Does not lock-up 1211111 11 2
“M” posi-
tion 1GR
⇔ 2GR 211111 11 2
2GR ⇔ 3GR 211111 11 2
3GR ⇔ 4GR 211111 11 2
4GR ⇔ 5GR 211111 11 2
5GR ⇔ 6GR 211111 11 2
6GR ⇔ 7GR 211111 11 2
Revision: 2010 May2011 QX56

TM-172
< SYMPTOM DIAGNOSIS >[7AT: RE7R01B]
SYSTEM SYMPTOM
SymptomDiagnostic item
Oil pump
Torque converter
Low brake*
Front brake
High and low reverse clutch
Input clutch
Direct clutch
2346 brake
Reverse brake
1st one-way clutch
2nd one-way clutch
gear
control valve
Parking component
TM-270
TM-211TM-211TM-211TM-292TM-282TM-294TM-270TM-211TM-211TM-287TM-211TM-182TM-211
Func-
tion
trouble
Poor
shift-
ingSlip
When
shifting
gears 1GR
⇔ 2GR 1 1 1 2
2GR ⇔ 3GR 1 1 2
3GR ⇔ 4GR 1 2 1 2
4GR ⇔ 5GR 1 1 1 2
5GR ⇔ 6GR 1 1 1 2
6GR ⇔ 7GR 1 1 1 2
En-
gine
brake
does
not
work “D” position
→ “M” position 1 1 1 1 1 2
“M” posi-
tion 7GR
→ 6GR 1 1 1 2
6GR → 5GR 1 1 1 2
5GR → 4GR 1 1 1 2
4GR → 3GR 1 2 1 2
3GR → 2GR 1 1 1 1 1 2
2GR → 1GR 1 1 1 1 2
Revision: 2010 May2011 QX56