display INFINITI QX56 2006 Factory Owner's Guide

TROUBLE DIAGNOSISAT-43
DE
F
G H
I
J
K L
M A
B
AT
Revision: November 2009 2006 QX56
A/T Interlock

If there is an A/T interlock judgment malfunction, the transmission is fixed in 2nd gear to make driving pos-
sible.
NOTE:
When the vehicle is driven fixed in 2nd gear, a turbine revolution sensor malfunction is displayed,
but this is not a turbine revolution sensor malfunction.

When the coupling pattern below is detected, the fail-safe action corresponding to the pattern is per-
formed.
A/T INTERLOCK COUPLING PATTERN TABLE

: NG X: OK
A/T 1st Engine Braking

When there is an A/T first gear engine brake judgment malfunction, the low coast brake solenoid is
switched “OFF” to avoid the engine brake operation.
Line Pressure Solenoid

The solenoid is switched “OFF” and the line pressure is set to the maximum hydraulic pressure to make
driving possible.
Torque Converter Clutch Solenoid

The solenoid is switched “OFF” to release the lock-up.
Low Coast Brake Solenoid

When a (electrical or functional) malfunction occurs, in order to make driving possible, the engine brake is
not applied in 1st and 2nd gear.
Input Clutch Solenoid

If a (electrical or functional) malfunction occurs with the solenoid either “ON” or “OFF ”, the transmission is
held in 4th gear to make driving possible.
Direct Clutch Solenoid

If a (electrical or functional) malfunction occurs with the solenoid either “ON” or “OFF ”, the transmission is
held in 4th gear to make driving possible.
Front Brake Solenoid

If a (electrical or functional) malfunction occurs with the solenoid “ON”, in order to make driving possible,
the A/T is held in 5th gear; if the solenoid is OFF, 4th gear.
High and Low Reverse Clutch Solenoid

If a (electrical or functional) malfunction occurs with the solenoid either “ON” or “OFF ”, the transmission is
held in 4th gear to make driving possible.
Turbine Revolution Sensor 1 or 2

The control is the same as if there were no turbine revolution sensors, 5th gear is prohibited.
Gear position ATF pressure switch output
Fail-safe function Clutch pressure output pattern after fail-safe func-
tion
SW3 (I/C) SW6
(HLR/
C) SW5
(D/C) SW1
(FR/B) SW2
(LC/B) I/C HLR/C D/C FR/B LC/B L/U
A/T inter-
lock cou-
pling pattern 3rd
–XX –
Held in
2nd gear OFF OFF ON OFF OFF OFF
4th –XX –
Held in
2nd gear OFF OFF ON OFF OFF OFF
5th X X –X
Held in
2nd gear OFF OFF ON OFF OFF OFF

AT-84
TROUBLE DIAGNOSIS
Revision: November 20092006 QX56
CONSULT-II Function (A/T)ECS00CEP
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II REFERENCE VALUE
NOTICE:
1. The CONSULT-II electrically displays shift timing and lock-up timing (that is, operation timing of each sole-
noid).
Check for time difference between actual shift timing and the CONSULT-II display. If the difference is
noticeable, mechanical parts (except solenoids, sensors, etc.) may be malfunctioning. Check mechanical
parts using applicable diagnostic procedures.
2. Shift schedule (which implies gear position) displayed on CONSULT-II and that indicated in Service Man- ual may differ slightly. This occurs because of the following reasons:
–Actual shift schedule has more or less tolerance or allowance,
–Shift schedule indicated in Service Manual refers to the point where shifts start, and
–Gear position displayed on CONSULT-II indicates the point where shifts are completed.
3. Display of solenoid valves on CONSULT-II changes at the start of shifting, while gear position is displayed upon completion of shifting (which is computed by TCM).
TCM diagnostic mode Description
WORK SUPPORT Supports inspections and adjustments. Commands are transmitted to the TCM for setting the status
suitable for required operation, input/output signals are received from the TCM and received data is
displayed.
SELF-DIAG RESULTS Displays TCM self-diagnosis results.
DATA MONITOR Displays TCM input/output data in real time.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.
ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to them.
FUNCTION TEST Conducted by CONSULT-II instead of a technician to determine whether each system is
“OK ” or
“ NG ”.
ECU PART NUMBER TCM part number can be read.
Item name Condition Display value (Approx.)
ATF TEMP SE 1 0°C (32 ° F) - 20 °C (68 °F) - 80 °C (176 °F) 3.3 - 2.7 - 0.9 V
ATF TEMP SE 2 3.3 - 2.5 - 0.7 V
TCC SOLENOID When perform slip lock-up
0.2 - 0.4 A
When perform lock-up 0.4 - 0.6 A
SLCT LVR POSI Selector lever in
“N ”,“ P ” position. N/P
Selector lever in “R ” position. R
Selector lever in “D ” position. D
Selector lever in “4 ” position. 4
Selector lever in “3 ” position. 3
Selector lever in “2 ” position. 2
Selector lever in “1 ” position. 1
VHCL/S SE ·A/T During driving Approximately matches the
speedometer reading.
ENGINE SPEED Engine running Closely matches the tachometer
reading.
LINE PRES SOL During driving 0.2 - 0.6 A
TURBINE REV During driving (lock-up ON) Approximately matches the
engine speed.
VHCL/S SE ·MTR During driving Approximately matches the
speedometer reading.

TROUBLE DIAGNOSISAT-85
DE
F
G H
I
J
K L
M A
B
AT
Revision: November 2009 2006 QX56
ATF PRES SW 1Front brake engaged. Refer to
AT- 2 0ON
Front brake disengaged. Refer to AT- 2 0
OFF
ATF PRES SW 2 Low coast brake engaged. Refer to
AT- 2 0
ON
Low coast brake disengaged. Refer to AT- 2 0
OFF
ATF PRES SW 3 Input clutch engaged. Refer to
AT- 2 0
ON
Input clutch disengaged. Refer to AT- 2 0
OFF
ATF PRES SW 5 Direct clutch engaged. Refer to
AT- 2 0
ON
Direct clutch disengaged. Refer to AT- 2 0
OFF
ATF PRES SW 6 High and low reverse clutch engaged. Refer to
AT- 2 0
ON
High and low reverse clutch disengaged. Refer to AT- 2 0
OFF
I/C SOLENOID Input clutch disengaged. Refer to
AT- 2 0
0.6 - 0.8 A
Input clutch engaged. Refer to AT- 2 0
0 - 0.05 A
FR/B SOLENOID Front brake engaged. Refer to
AT- 2 0
0.6 - 0.8 A
Front brake disengaged. Refer to AT- 2 0
0 - 0.05 A
D/C SOLENOID Direct clutch disengaged. Refer to
AT- 2 0
0.6 - 0.8 A
Direct clutch engaged. Refer to AT- 2 0
0 - 0.05 A
HLR/C SOL High and low reverse clutch disengaged. Refer to
AT- 2 0
0.6 - 0.8 A
High and low reverse clutch engaged. Refer to AT- 2 0
0 - 0.05 A
ON OFF SOL Low coast brake engaged. Refer to
AT- 2 0
ON
Low coast brake disengaged. Refer to AT- 2 0
OFF
STARTER RELAY Selector lever in
“N ”,“ P ” position. ON
Selector lever in other position. OFF
ACCELE POSI Released accelerator pedal.
0.0/8
Fully depressed accelerator pedal. 8/8
CLSD THL POS Released accelerator pedal.
ON
Fully depressed accelerator pedal. OFF
W/O THL POS Fully depressed accelerator pedal.
ON
Released accelerator pedal. OFF
BRAKE SW Depressed brake pedal.
ON
Released brake pedal. OFF
Item name
Condition Display value (Approx.)

TROUBLE DIAGNOSISAT-87
DE
F
G H
I
J
K L
M A
B
AT
Revision: November 2009 2006 QX56
2. Touch “SELF-DIAG RESULTS ”.
Display shows malfunction experienced since the last erasing
operation.
Display Items List
X: Applicable, —: Not applicable
BCIA0031E
Items (CONSULT-II
screen terms) Malfunction is detected when... TCM self-
diagnosis OBD-II (DTC)
“ A/T ” with
CONSULT-II MIL indicator
lamp*1,
“ ENGINE ” with
CONSULT-II or
GST
CAN COMM CIRCUIT

When a malfunction is detected in CAN communications U1000 U1000
STARTER RELAY/
CIRC

If this signal is ON other than in P or N position, this is judged to be a
malfunction.
(And if it is OFF in P or N position, this too is judged to be a malfunc-
tion.) P0615
—
TCM

TCM is malfunctioning. P0700 P0700
PNP SW/CIRC

PNP switch 1-4 signals input with impossible pattern

“ P ” position is detected from N position without any other position
being detected in between. P0705 P0705
TURBINE REV S/CIRC

TCM does not receive the proper voltage signal from the sensor.

TCM detects an irregularity only at position of 4th gear for turbine revo-
lution sensor 2. P0717 P0717
VEH SPD SEN/CIR AT
(Revolution sensor)

Signal from vehicle speed sensor A/T (Revolution sensor) not input
due to cut line or the like

Unexpected signal input during running

After ignition switch is turned ON, unexpected signal input from vehicle
speed sensor MTR before the vehicle starts moving P0720 P0720
ENGINE SPEED SIG

TCM does not receive the CAN communication signal from the ECM. P0725 —
TCC SOLENOID/CIRC

Normal voltage not applied to solenoid due to cut line, short, or the like P0740 P0740
A/T TCC S/V FNCTN

A/T cannot perform lock-up even if electrical circuit is good.

TCM detects as irregular by comparing difference value with slip rota-
tion. P0744 P0744*2
L/PRESS SOL/CIRC

Normal voltage not applied to solenoid due to cut line, short, or the like

TCM detects as irregular by comparing target value with monitor value. P0745 P0745
TP SEN/CIRC A/T

TCM does not receive the proper accelerator pedal position signals
(input by CAN communication) from ECM. P1705 P1705
ATF TEMP SEN/CIRC

During running, the ATF temperature sensor signal voltage is exces-
sively high or low P1710 P0710
VEH SPD SE/CIR ·MTR

Signal (CAN communication) from vehicle speed sensor MTR not input
due to cut line or the like

Unexpected signal input during running P1721
—
A/T INTERLOCK

Except during shift change, the gear position and ATF pressure switch
states are monitored and comparative judgement made. P1730 P1730

TROUBLE DIAGNOSISAT-89
DE
F
G H
I
J
K L
M A
B
AT
Revision: November 2009 2006 QX56
*1: Refer to EC-63, "Malfunction Indicator Lamp (MIL)" .
*2:These malfunctions cannot be displayed MIL if another malfunction is assigned to MIL.
How to Erase Self-diagnostic Results
1. Perform “CONSULT-II SETTING PROCEDURE ”. Refer to AT- 8 6 , "CONSULT-II SETTING PROCEDURE"
.
2. Touch “SELF-DIAG RESULTS ”.
3. Touch ”ERASE”. (The self-diagnostic results will be erased.)
ATF PRES SW 5/CIRC

TCM detects that actual gear ratio is normal, and relation between
gear position and condition of ATF pressure switch 5 is irregular during
depressing accelerator pedal. (Other than during shift change) P1845
—
ATF PRES SW 6/CIRC

TCM detects that actual gear ratio is normal, and relation between
gear position and condition of ATF pressure switch 6 is irregular during
depressing accelerator pedal. (Other than during shift change) P1846
—
NO DTC IS
DETECTED FUR-
THER TESTING MAY
BE REQUIRED

No NG item has been detected. XX
Items (CONSULT-II
screen terms) Malfunction is detected when... TCM self-
diagnosis OBD-II (DTC)
“ A/T ” with
CONSULT-II MIL indicator
lamp*1,
“ ENGINE ” with
CONSULT-II or GST
BCIA0031E
PCIA0061E

AT-90
TROUBLE DIAGNOSIS
Revision: November 20092006 QX56
DATA MONITOR MODE
Operation Procedure
1. Perform “CONSULT-II SETTING PROCEDURE ”. Refer to AT- 8 6 , "CONSULT-II SETTING PROCEDURE"
.
2. Touch “DATA MONITOR ”.
NOTE:
When malfunction is detected, CONSULT-II performs
“REAL-TIME DIAGNOSIS”. Also, any malfunction detected
while in this mode will be displayed at real time.
Display Items List
X: Standard, —: Not applicable
BCIA0031E
Monitored item (Unit) Monitor Item Selection
Remarks
ECU
INPUT
SIGNALS MAIN SIG-
NALS SELEC-
TION
FROM
MENU
VHCL/S SE ·A/T (km/h) XXX Revolution sensor
VHCL/S SE ·MTR (km/h) X— X
ACCELE POSI (0.0/8) X— X Accelerator pedal position signal
THROTTLE POSI (0.0/8) XXXDegree of opening for accelerator recognized by
the TCM
For fail-safe operation, the specific value used
for control is displayed.
CLSD THL POS (ON-OFF display) X— X
Signal input with CAN communications
W/O THL POS (ON-OFF display) X— X
BRAKE SW (ON-OFF display) X— X Stop lamp switch
GEAR —XX Gear position recognized by the TCM updated
after gear-shifting
ENGINE SPEED (rpm) XXX
TURBINE REV (rpm) XXX
OUTPUT REV (rpm) XXX
GEAR RATIO —XX
TC SLIP SPEED (rpm) —XX Difference between engine speed and torque
converter input shaft speed
F SUN GR REV (rpm) ——X
F CARR GR REV (rpm) ——X
ATF TEMP SE 1 (V) X— X
ATF TEMP SE 2 (V) X— X
ATF TEMP 1 ( °C) —XX
ATF TEMP 2 ( °C) —XX
BATTERY VOLT (V) X— X
ATF PRES SW 1 (ON-OFF display) XXX (for FR/B solenoid)
ATF PRES SW 2 (ON-OFF display) XXX (for LC/B solenoid)
ATF PRES SW 3 (ON-OFF display) XXX (for I/C solenoid)
ATF PRES SW 5 (ON-OFF display) XXX (for D/C solenoid)

TROUBLE DIAGNOSISAT-91
DE
F
G H
I
J
K L
M A
B
AT
Revision: November 2009 2006 QX56
ATF PRES SW 6 (ON-OFF display)XXX (for HLR/C solenoid)
PNP SW 1 (ON-OFF display) X— X
PNP SW 2 (ON-OFF display) X— X
PNP SW 3 (ON-OFF display) X— X
PNP SW 4 (ON-OFF display) X— X
SLCT LVR POSI —XX Selector lever position is recognized by the
TCM.
For fail-safe operation, the specific value used
for control is displayed.
1 POSITION SW (ON-OFF display) X— X 1st position switch
OD CONT SW (ON-OFF display) X— X 4th position switch
POWERSHIFT SW (ON-OFF display) X —X
Not mounted but displayed.
HOLD SW (ON-OFF display)
X— X
MANU MODE SW (ON-OFF display) X— X
NON M-MODE SW (ON-OFF display) X —X
UP SW LEVER (ON-OFF display) X— X
DOWN SW LEVER (ON-OFF display) X —X
SFT UP ST SW (ON-OFF display) ——X
SFT DWN ST SW (ON-OFF display) ——X
ASCD-OD CUT (ON-OFF display) ——X
ASCD-CRUISE (ON-OFF display) ——X
ABS SIGNAL (ON-OFF display) ——X
ACC OD CUT (ON-OFF display) ——X
ICC (Intelligent cruise control)
ACC SIGNAL (ON-OFF display) ——X
TCS GR/P KEEP (ON-OFF display) ——X
TCS SIGNAL 2 (ON-OFF display) ——X
TCS SIGNAL 1 (ON-OFF display) ——X
TCC SOLENOID (A) —XX
LINE PRES SOL (A) —XX
I/C SOLENOID (A) —XX
FR/B SOLENOID (A) —XX
D/C SOLENOID (A) —XX
HLR/C SOL (A) —XX
ON OFF SOL (ON-OFF display) ——X LC/B solenoid
TCC SOL MON (A) ——X
L/P SOL MON (A) ——X
I/C SOL MON (A) ——X
FR/B SOL MON (A) ——X
D/C SOL MON (A) ——X
HLR/C SOL MON (A) ——X
ONOFF SOL MON (ON-OFF display) ——X LC/B solenoid
P POSI IND (ON-OFF display) ——X
Monitored item (Unit)
Monitor Item Selection
Remarks
ECU
INPUT
SIGNALS MAIN SIG-
NALS SELEC-
TION
FROM
MENU

AT-92
TROUBLE DIAGNOSIS
Revision: November 20092006 QX56
R POSI IND (ON-OFF display)——X
N POSI IND (ON-OFF display) ——X
D POSI IND (ON-OFF display) ——X
4TH POSI IND (ON-OFF display) ——X
3RD POSI IND (ON-OFF display) ——X
2ND POSI IND (ON-OFF display) ——X
1ST POSI IND (ON-OFF display) ——X
MANU MODE IND (ON-OFF display) ——X
Not mounted but displayed.
POWER M LAMP (ON-OFF display) ——X
F-SAFE IND/L (ON-OFF display) ——X
ATF WARN LAMP (ON-OFF display) ——X
BACK-UP LAMP (ON-OFF display) ——X
STARTER RELAY (ON-OFF display) ——X
PNP SW3 MON (ON-OFF display) ——X
C/V CLB ID1 ——X
C/V CLB ID2 ——X
C/V CLB ID3 ——X
UNIT CLB ID1 ——X
UNIT CLB ID2 ——X
UNIT CLB ID3 ——X
TRGT GR RATIO ——X
TRGT PRES TCC (kPa) ——X
TRGT PRES L/P (kPa) ——X
TRGT PRES I/C (kPa) ——X
TRGT PRE FR/B (kPa) ——X
TRGT PRES D/C (kPa) ——X
TRG PRE HLR/C (kPa) ——X
SHIFT PATTERN ——X
DRV CST JUDGE ——X
START RLY MON ——X
NEXT GR POSI ——X
SHIFT MODE ——X
MANU GR POSI ——X
VEHICLE SPEED (km/h) —XX Vehicle speed recognized by the TCM.
Voltage (V) ——XDisplays the value measured by the voltage
probe.
Frequency (Hz) ——X
The value measured by the pulse probe is dis-
played.
DUTY-HI (high) (%)
——X
DUTY-LOW (low) (%) ——X
PLS WIDTH-HI (ms) ——X
PLS WIDTH-LOW (ms) ——X
Monitored item (Unit)
Monitor Item Selection
Remarks
ECU
INPUT
SIGNALS MAIN SIG-
NALS SELEC-
TION
FROM
MENU

AT-94
TROUBLE DIAGNOSIS
Revision: November 20092006 QX56

When testing conditions are satisfied, CONSULT-II screen
changes from “OUT OF CONDITION” to “TESTING”.
6. Stop vehicle.

If “NG” appears on the screen, malfunction may exist. Go
to “Diagnostic Procedure”.
7. Perform test drive to check gear shift feeling in accordance with instructions displayed.
8. Touch “YES” or “NO ”.
9. CONSULT-II procedure is ended.
SCIA5161E
SCIA5164E
SCIA5162E
SCIA5163E

TROUBLE DIAGNOSISAT-95
DE
F
G H
I
J
K L
M A
B
AT
Revision: November 2009 2006 QX56

If “NG” appears on the screen, a malfunction may exist.
Go to “Diagnostic Procedure”.
Display Items List
*: Do not use, but displayed.
SCIA5162E
DTC work support itemDescriptionCheck item
I/C SOL FUNCTN CHECK* ——
FR/B SOL FUNCTN CHECK* ——
D/C SOL FUNCTN CHECK* ——
HLR/C SOL FUNCTN CHECK* ——
LC/B SOL FUNCTN CHECK* ——
TCC SOL FUNCTN CHECK Following items for
“TCC solenoid function (lock-up) ” can be con-
firmed.

Self-diagnosis status (whether the diagnosis is being conducted
or not)

Self-diagnosis result (OK or NG)

TCC solenoid valve

Hydraulic control circuit