turn signal INFINITI QX56 2011 Factory Service Manual
[x] Cancel search | Manufacturer: INFINITI, Model Year: 2011, Model line: QX56, Model: INFINITI QX56 2011Pages: 5598, PDF Size: 94.53 MB
Page 5165 of 5598
![INFINITI QX56 2011 Factory Service Manual
TCM
TM-77
< ECU DIAGNOSIS INFORMATION > [7AT: RE7R01B]
C
EF
G H
I
J
K L
M A
B
TM
N
O P
1ST ENGINE BRAKE PROTECTION CONTROL
Controls the engine brake so as not to make effective by turning the front INFINITI QX56 2011 Factory Service Manual
TCM
TM-77
< ECU DIAGNOSIS INFORMATION > [7AT: RE7R01B]
C
EF
G H
I
J
K L
M A
B
TM
N
O P
1ST ENGINE BRAKE PROTECTION CONTROL
Controls the engine brake so as not to make effective by turning the front](/img/42/57033/w960_57033-5164.png)
TCM
TM-77
< ECU DIAGNOSIS INFORMATION > [7AT: RE7R01B]
C
EF
G H
I
J
K L
M A
B
TM
N
O P
1ST ENGINE BRAKE PROTECTION CONTROL
Controls the engine brake so as not to make effective by turning the front brake solenoid output to OFF when
each solenoid becomes the electricity pattern of 1st engine brake during driving at the vehicle speed 25 km/h
or more in any positions other than “R” position and 1GR.
TCM HIGH TEMPERATURE PROTECTION CONTROL
Limit the accelerator opening and forcibly control the vehi cle to the low torque driving when the electronic sub-
strate in TCM reaches the high temperature.
DTC Inspection Priority ChartINFOID:0000000006226785
If some DTCs are displayed at the same time, perfo rm inspections one by one based on the priority as per the
following list.
Malfunction detection condition Vehicle speed: 10 km/h (7 MPH) or more
Control at malfunction Neutral
Normal return condition Vehicle speed: 8 km/h (5 MPH) or less
and
Engine speed: 2,200 rpm or less
Vehicle behavior The torque transmission cannot be performed
There is a shock just before a vehicle stop
Malfunction detection condition Select lever and gear: Any position other than “R” position and 1GR
and
Vehicle speed: More than 25 km/h (16 MPH)
Control at malfunction Front brake solenoid output signal; OFF
Normal return condition Other than detection condition of malfunction
Vehicle behavior Does not exist
Malfunction detection condition TCM electronic substrate temperature
145
°C (293 °F) and 120 seconds
or
150 °C (302 °F)
Control at malfunction Accelerator opening: 0.5/8 or less
Normal return condition TCM electronic substrate temperature: Less than 140
°C (284 °F)
and
Vehicle speed: 5 km/h (3 MPH) or less
Vehicle behavior Accelerator opening: output torque of approximately 0.5/8
Priority Detected items (DTC) Reference 1 U1000 CAN COMM CIRCUIT TM-103, "
DTC Logic"
Revision: 2010 May2011 QX56
Page 5191 of 5598
![INFINITI QX56 2011 Factory Service Manual
U1000 CAN COMM CIRCUITTM-103
< DTC/CIRCUIT DIAGNOSIS > [7AT: RE7R01B]
C
EF
G H
I
J
K L
M A
B
TM
N
O P
U1000 CAN COMM CIRCUIT
DescriptionINFOID:0000000006226798
CAN (Controller Area Network) is a seri INFINITI QX56 2011 Factory Service Manual
U1000 CAN COMM CIRCUITTM-103
< DTC/CIRCUIT DIAGNOSIS > [7AT: RE7R01B]
C
EF
G H
I
J
K L
M A
B
TM
N
O P
U1000 CAN COMM CIRCUIT
DescriptionINFOID:0000000006226798
CAN (Controller Area Network) is a seri](/img/42/57033/w960_57033-5190.png)
U1000 CAN COMM CIRCUITTM-103
< DTC/CIRCUIT DIAGNOSIS > [7AT: RE7R01B]
C
EF
G H
I
J
K L
M A
B
TM
N
O P
U1000 CAN COMM CIRCUIT
DescriptionINFOID:0000000006226798
CAN (Controller Area Network) is a serial communication line for real-time application. It is an on-vehicle mul-
tiplex communication line with high data communica tion speed and excellent malfunction detection ability.
Many electronic control units are equipped onto a vehicl e, and each control unit shares information and links
with other control units during operation (not independently ). In CAN communication, control units are con-
nected with 2 communication lines (CAN-H line, CAN-L li ne) allowing a high rate of information transmission
with less wiring. Each control unit transmits/recei ves data but selectively reads required data only.
DTC LogicINFOID:0000000006226799
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If “DTC CONFIRMATION PROCEDURE” is previously c onducted, always turn ignition switch OFF and wait at
least 10 seconds before performing the next test.
>> GO TO 2.
2.CHECK DTC DETECTION
With CONSULT-III
1. Start the engine.
2. Run engine for at least 2 cons ecutive seconds at idle speed.
3. Perform “Self Diagnostic Resu lts” in “TRANSMISSION”.
With GST
Follow the procedure “With CONSULT-III”
Is
“U1000” detected?
YES >> Go to TM-103, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006226800
Go to LAN-18, "Trouble Diagnosis Flow Chart".
DTC Trouble diagnosis name DTC is detected if... Possible cause
U1000 CAN Communication Line TCM is not transmitting or re-
ceiving CAN communication
signal for 2 seconds or more. Harness or connectors
(CAN communication line is
open or shorted.)
TCM
Revision: 2010 May2011 QX56
Page 5192 of 5598
![INFINITI QX56 2011 Factory Service Manual
TM-104
< DTC/CIRCUIT DIAGNOSIS >[7AT: RE7R01B]
P0615 STARTER RELAY
P0615 STARTER RELAY
DescriptionINFOID:0000000006226801
TCM prohibits cranking other than at “P” or “N” position.
DTC LogicIN INFINITI QX56 2011 Factory Service Manual
TM-104
< DTC/CIRCUIT DIAGNOSIS >[7AT: RE7R01B]
P0615 STARTER RELAY
P0615 STARTER RELAY
DescriptionINFOID:0000000006226801
TCM prohibits cranking other than at “P” or “N” position.
DTC LogicIN](/img/42/57033/w960_57033-5191.png)
TM-104
< DTC/CIRCUIT DIAGNOSIS >[7AT: RE7R01B]
P0615 STARTER RELAY
P0615 STARTER RELAY
DescriptionINFOID:0000000006226801
TCM prohibits cranking other than at “P” or “N” position.
DTC LogicINFOID:0000000006226802
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If “DTC CONFIRMATION PROCEDURE” is previously c onducted, always turn ignition switch OFF and wait at
least 10 seconds before performing the next test.
>> GO TO 2.
2.CHECK DTC DETECTION
With CONSULT-III
1. Shift the selector lever to “P” and “N” positions.
2. Turn ignition switch ON and wait 2 seconds or more.
3. Perform “Self Diagnostic Results” in “TRANSMISSION”.
Is
“P0615” detected?
YES >> Go to TM-104, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006226803
1.CHECK STARTER RELAY SIGNAL
1. Turn ignition switch ON.
2. Check voltage between IPDM E/R connector terminal and ground.
Is the inspection result normal?
YES >> Check starter relay circuit. Refer to STR-7, "Wiring Diagram".
NO >> GO TO 2.
2. CHECK HARNESS BETWEEN A/T ASSEMBLY AND IPDM E/R (PART 1)
1. Turn ignition switch OFF.
2. Disconnect A/T assembly c onnector and IPDM E/R connector.
3. Check the continuity between A/T assembly vehi cle side harness connector terminal and IPDM E/R vehi-
cle side harness connector terminal.
DTC Trouble diagnosis name DTC is detected if... Possible cause
P0615 Starter Relay Circuit The starter monitor value is
OFF when the ignition switch is
ON at the “P” and “N” positions. Harness or connectors
(Starter relay and TCM circuit
is open or shorted.)
Starter relay circuit
IPDM E/R connector
GroundCondition Voltage (Approx.)
Connector Terminal
E15 48 Selector lever in “P” and
“N” positions.
Battery voltage
Selector lever in other
positions. 0 V
Revision: 2010 May2011 QX56
Page 5197 of 5598
![INFINITI QX56 2011 Factory Service Manual
P0717 INPUT SPEED SENSOR ATM-109
< DTC/CIRCUIT DIAGNOSIS > [7AT: RE7R01B]
C
EF
G H
I
J
K L
M A
B
TM
N
O P
P0717 INPUT SPEED SENSOR A
DTC LogicINFOID:0000000006226808
DTC DETECTION LOGIC
DTC CONFIRMAT INFINITI QX56 2011 Factory Service Manual
P0717 INPUT SPEED SENSOR ATM-109
< DTC/CIRCUIT DIAGNOSIS > [7AT: RE7R01B]
C
EF
G H
I
J
K L
M A
B
TM
N
O P
P0717 INPUT SPEED SENSOR A
DTC LogicINFOID:0000000006226808
DTC DETECTION LOGIC
DTC CONFIRMAT](/img/42/57033/w960_57033-5196.png)
P0717 INPUT SPEED SENSOR ATM-109
< DTC/CIRCUIT DIAGNOSIS > [7AT: RE7R01B]
C
EF
G H
I
J
K L
M A
B
TM
N
O P
P0717 INPUT SPEED SENSOR A
DTC LogicINFOID:0000000006226808
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
Always drive vehicle at a safe speed.
1.PRECONDITIONING
If “DTC CONFIRMATION PROCEDURE” is previously c onducted, always turn ignition switch OFF and wait at
least 10 seconds before performing the next test.
>> GO TO 2.
2.CHECK DTC DETECTION
With CONSULT-III
1. Start the engine.
2. Select “SLCT LVR POSI”, “GEAR”, “VHCL/S SE-A/ T”, “W/O THL POS” and “ENGINE SPEED” in “Data
Monitor” in “TRANSMISSION”.
3. Drive vehicle and maintain the following conditions for 5 seconds or more. CAUTION:
Keep the same gear position.
NOTE:
Driving the vehicle uphill (increased engine load) will hel p maintain the driving conditions required for this
test.
4. Perform “Self Diagnostic Resu lts” in “TRANSMISSION”.
With GST
Follow the procedure “With CONSULT-III”.
Is
“P0717” detected?
YES >> Go to TM-109, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006226809
1.CHECK INTERMITTENT INCIDENT
Refer to GI-40, "
Intermittent Incident".
Is the inspection result normal?
YES >> Replace the control valve & TCM. Refer to TM-182, "Exploded View".
NO >> Repair or replace damaged parts.
DTC Trouble diagnosis name DTC is detected if... Possible cause
P0717 Input/Turbine Speed Sensor A
Circuit No Signal The revolution of input speed
sensor 1 and/or 2 is 270 rpm or
less. Harness or connectors
(Sensor circuit is open.)
Input speed sensor 1 and/or 2
SLCT LVR POSI : D
GEAR : 2nd, 3rd, 4th, 5th or 6th
VHCL/S SE-A/T : More than 40 km/h (25 MPH)
W/O THL POS : ON
ENGINE SPEED : More than 1,500 rpm
Revision: 2010 May2011 QX56
Page 5200 of 5598
![INFINITI QX56 2011 Factory Service Manual
TM-112
< DTC/CIRCUIT DIAGNOSIS >[7AT: RE7R01B]
P0725 ENGINE SPEED
P0725 ENGINE SPEED
DescriptionINFOID:0000000006226812
The engine speed signal is transmitted from the ECM to the TCM via CAN communic INFINITI QX56 2011 Factory Service Manual
TM-112
< DTC/CIRCUIT DIAGNOSIS >[7AT: RE7R01B]
P0725 ENGINE SPEED
P0725 ENGINE SPEED
DescriptionINFOID:0000000006226812
The engine speed signal is transmitted from the ECM to the TCM via CAN communic](/img/42/57033/w960_57033-5199.png)
TM-112
< DTC/CIRCUIT DIAGNOSIS >[7AT: RE7R01B]
P0725 ENGINE SPEED
P0725 ENGINE SPEED
DescriptionINFOID:0000000006226812
The engine speed signal is transmitted from the ECM to the TCM via CAN communication line.
DTC LogicINFOID:0000000006226813
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
Always drive vehicle at a safe speed.
1.PRECONDITIONING
If “DTC CONFIRMATION PROCEDURE” is previously c onducted, always turn ignition switch OFF and wait at
least 10 seconds before performing the next test.
>> GO TO 2.
2.CHECK DTC DETECTION
With CONSULT-III
1. Start the engine.
2. Select “SLCT LVR POSI” and “VHCL/S SE-A/T ” in “Data Monitor” in “TRANSMISSION”.
3. Drive vehicle and maintain the following conditions for 5 seconds or more.
4. Perform “Self Diagnostic Results” in “TRANSMISSION”.
Is
“P0725” detected?
YES >> Go to TM-112, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006226814
1.CHECK DTC OF ECM
With CONSULT-III
1. Turn ignition switch ON.
2. Perform “Self Diagnostic Results” in “ENGINE”.
Is any DTC detected?
YES >> Check DTC detected item. Refer to EC-98, "DTC Index".
NO >> GO TO 2.
2.CHECK DTC OF TCM
With CONSULT-III
Perform “Self Diagnostic Resu lts” in “TRANSMISSION”.
Is any DTC other than
“P0725” detected?
YES >> Check DTC detected item. Refer to TM-78, "DTC Index".
NO >> GO TO 3.
DTC Trouble diagnosis name DTC is detected if... Possible cause
P0725 Engine Speed Input Circuit TCM does not receive the
CAN communication signal
from the ECM.
The engine speed is more
less 150 rpm even if the vehi-
cle speed is more than 10 km/
h (7 MPH). Harness or connectors
(ECM to TCM circuit is open or
shorted.)
SLCT LVR POSI : D
VHCL/S SE-A/T : More than 10 km/h (7 MPH)
Revision: 2010 May2011 QX56
Page 5225 of 5598
![INFINITI QX56 2011 Factory Service Manual
P1705 TP SENSORTM-137
< DTC/CIRCUIT DIAGNOSIS > [7AT: RE7R01B]
C
EF
G H
I
J
K L
M A
B
TM
N
O P
P1705 TP SENSOR
DTC LogicINFOID:0000000006226852
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECON INFINITI QX56 2011 Factory Service Manual
P1705 TP SENSORTM-137
< DTC/CIRCUIT DIAGNOSIS > [7AT: RE7R01B]
C
EF
G H
I
J
K L
M A
B
TM
N
O P
P1705 TP SENSOR
DTC LogicINFOID:0000000006226852
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECON](/img/42/57033/w960_57033-5224.png)
P1705 TP SENSORTM-137
< DTC/CIRCUIT DIAGNOSIS > [7AT: RE7R01B]
C
EF
G H
I
J
K L
M A
B
TM
N
O P
P1705 TP SENSOR
DTC LogicINFOID:0000000006226852
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If “DTC CONFIRMATION PROCEDURE” is previously c onducted, always turn ignition switch OFF and wait at
least 10 seconds before performing the next test.
>> GO TO 2.
2.CHECK DTC DETECTION
With CONSULT-III
1. Start the engine.
2. Select “SLCT LVR POSI” and “VHCL/S SE-A/T ” in “Data Monitor” in “TRANSMISSION”.
3. Drive vehicle and maintain the following conditions for 5 seconds or more.
4. Perform “Self Diagnostic Resu lts” in “TRANSMISSION”.
Is
“P1705” detected?
YES >> Go to TM-137, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006226853
1.CHECK DTC OF ECM
With CONSULT-III
1. Turn ignition switch ON.
2. Perform “Self Diagnostic Results” in “ENGINE”.
Is any DTC detected?
YES >> Check DTC detect ed item. Refer to EC-98, "DTC Index".
NO >> GO TO 2.
2.CHECK DTC OF TCM
With CONSULT-III
Perform “Self Diagnostic Resu lts” in “TRANSMISSION”.
Is any DTC other than
“P1705” detected?
YES >> Check DTC detect ed item. Refer to TM-78, "DTC Index".
NO >> GO TO 3.
3.CHECK INTERMITTENT INCIDENT
Refer to GI-40, "
Intermittent Incident".
Is the inspection result normal?
YES >> Replace the control valve & TCM. Refer to TM-182, "Exploded View".
NO >> Repair or replace damaged parts.
DTC Trouble diagnosis name DTC is detected if... Possible cause
P1705 Accelerator Peda
l Position Sen-
sor Signal Circuit TCM detects the difference be-
tween two accelerator pedal po-
sition signals received from
ECM via CAN communication.Harness or connectors
(Sensor circuit is open or short-
ed.)
SLCT LVR POSI : D
VHCL/S SE-A/T : 5 km/h (3 MPH) or more
Revision: 2010 May2011 QX56
Page 5226 of 5598
![INFINITI QX56 2011 Factory Service Manual
TM-138
< DTC/CIRCUIT DIAGNOSIS >[7AT: RE7R01B]
P1721 VEHICLE SPEED SIGNAL
P1721 VEHICLE SPEED SIGNAL
DescriptionINFOID:0000000006226854
The vehicle speed signal is transmitted from combinati
on meter INFINITI QX56 2011 Factory Service Manual
TM-138
< DTC/CIRCUIT DIAGNOSIS >[7AT: RE7R01B]
P1721 VEHICLE SPEED SIGNAL
P1721 VEHICLE SPEED SIGNAL
DescriptionINFOID:0000000006226854
The vehicle speed signal is transmitted from combinati
on meter](/img/42/57033/w960_57033-5225.png)
TM-138
< DTC/CIRCUIT DIAGNOSIS >[7AT: RE7R01B]
P1721 VEHICLE SPEED SIGNAL
P1721 VEHICLE SPEED SIGNAL
DescriptionINFOID:0000000006226854
The vehicle speed signal is transmitted from combinati
on meter to TCM via CAN communication line. The sig-
nal functions as an auxiliary device to the output speed sensor when it is malfunctioning. The TCM will then
use the vehicle speed signal.
DTC LogicINFOID:0000000006226855
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
Always drive vehicle at a safe speed.
Be careful not to rev engine into the red zone on the tachometer.
1.PRECONDITIONING
If “DTC CONFIRMATION PROCEDURE” is previously c onducted, always turn ignition switch OFF and wait at
least 10 seconds before performing the next test.
>> GO TO 2.
2.CHECK DTC DETECTION
With CONSULT-III
1. Start the engine.
2. Select “VHCL/S SE-A/T” in “Data Monitor” in “TRANSMISSION”.
3. Drive vehicle and maintain the following conditions for 60 seconds or more.
4. Perform “Self Diagnostic Results” in “TRANSMISSION”.
Is
“P1721” detected?
YES >> Go to TM-139, "Diagnosis Procedure".
NO >> INSPECTION END
DTC Trouble diagnosis name DTC is detected if... Possible cause
P1721 Vehicle Speed Signal Circuit The vehicle speed transmit-
ted from the combination
meter to TCM is 5 km/h
(3MPH) or less when the ve-
hicle speed detected by the
output speed sensor is 20
km/h or more. (Only when
starts after the ignition switch
is turned ON.)
The vehicle speed detected by the output speed sensor
does not decrease despite
the 36 km/h (23 MPH) or
more of deceleration in vehi-
cle speed received from the
combination meter when the
vehicle speed transmitted
from the combination meter
to TCM is 36 km/h (23 MPH)
or more and the vehicle
speed detected by the output
speed sensor is 24 (15 MPH)
or more. Harness or connectors
(Sensor circuit is open or short-
ed.)
VHCL/S SE-A/T : 40 km/h (25 MPH) or more
Revision: 2010 May2011 QX56
Page 5232 of 5598
![INFINITI QX56 2011 Factory Service Manual
TM-144
< DTC/CIRCUIT DIAGNOSIS >[7AT: RE7R01B]
P1815 M-MODE SWITCH
P1815 M-MODE SWITCH
DTC LogicINFOID:0000000006226864
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If “DTC CONF INFINITI QX56 2011 Factory Service Manual
TM-144
< DTC/CIRCUIT DIAGNOSIS >[7AT: RE7R01B]
P1815 M-MODE SWITCH
P1815 M-MODE SWITCH
DTC LogicINFOID:0000000006226864
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If “DTC CONF](/img/42/57033/w960_57033-5231.png)
TM-144
< DTC/CIRCUIT DIAGNOSIS >[7AT: RE7R01B]
P1815 M-MODE SWITCH
P1815 M-MODE SWITCH
DTC LogicINFOID:0000000006226864
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If “DTC CONFIRMATION PROCEDURE” is previously c onducted, always turn ignition switch OFF and wait at
least 10 seconds before performing the next test.
>> GO TO 2.
2.CHECK DTC DETECTION
With CONSULT-III
1. Turn ignition switch ON.
2. Select “SLCT LVR POSI” and “MANU MODE SW ” in “Data Monitor” in “TRANSMISSION”.
3. Maintain the following each conditions more than 2 seconds.
4. Perform “Self Diagnostic Results” in “TRANSMISSION”.
Is
“P1815” detected?
YES >> Go to TM-144, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006226865
1.CHECK MANUAL MODE SWITCH CIRCUIT
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 2.
NO >> GO TO 3.
2.CHECK MANUAL MODE SWITCH
DTC Trouble diagnosis name DTC is detected if... Possible cause
P1815 Manual Mode Switch Circuit TCM monitors manual mode,
non manual mode, up or down
switch signal, and detects as ir-
regular when impossible input
pattern occurs 2 second or
more. Harness or connectors
(These switches circuit is
open or shorted.)
Manual mode switch
SLCT LVR POSI : D
MANU MODE SW : ON
A/T shift selector vehicle side harness connector
Voltage (Approx.)
Connector Te r m i n a l
+ −
M57 1
4 Battery voltage
2
3
5
Revision: 2010 May2011 QX56
Page 5241 of 5598
![INFINITI QX56 2011 Factory Service Manual
TOW MODE SYSTEMTM-153
< DTC/CIRCUIT DIAGNOSIS > [7AT: RE7R01B]
C
EF
G H
I
J
K L
M A
B
TM
N
O P
TOW MODE SYSTEM
Component Function CheckINFOID:0000000006226876
1.CHECK TOW MODE INDICATOR LAMP FUNCTION INFINITI QX56 2011 Factory Service Manual
TOW MODE SYSTEMTM-153
< DTC/CIRCUIT DIAGNOSIS > [7AT: RE7R01B]
C
EF
G H
I
J
K L
M A
B
TM
N
O P
TOW MODE SYSTEM
Component Function CheckINFOID:0000000006226876
1.CHECK TOW MODE INDICATOR LAMP FUNCTION](/img/42/57033/w960_57033-5240.png)
TOW MODE SYSTEMTM-153
< DTC/CIRCUIT DIAGNOSIS > [7AT: RE7R01B]
C
EF
G H
I
J
K L
M A
B
TM
N
O P
TOW MODE SYSTEM
Component Function CheckINFOID:0000000006226876
1.CHECK TOW MODE INDICATOR LAMP FUNCTION
1. Turn ignition switch ON.
2. Check that tow mode indicator lamp turn s ON/OFF when tow mode switch is operated.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to TM-153, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000006226877
NOTE:
Tow mode switch is integrated in to SNOW MODE/T OW MODE/VDC OFF switch assembly (2WD models) or
4WD switch assembly (4WD models).
1.CHECK DTC OF TCM
With CONSULT-III
1. Turn ignition switch ON.
2. Perform “Self-Diagnostic Results” in “TRANSMISSION”.
Is any DTC detected?
YES >> Check DTC detect ed item. Refer to TM-78, "DTC Index".
NO >> GO TO 2.
2.CHECK DTC OF COMBINATION METER
With CONSULT-III
Perform “Self-Diagnostic Re sults” in “METER/M&A”.
Is any DTC detected?
YES >> Check DTC detect ed item. Refer to MWI-43, "DTC Index".
NO >> GO TO 3.
3.CHECK COMBINATION METER
With CONSULT-III
1. Select “TOW MODE IND” in “Data Monitor” in “METER/M&A”.
2. Check that “TOW MODE IND” turns ON/OFF when tow mode switch is operated.
Is the inspection result normal?
YES >> Replace combination meter. Refer to MWI-85, "Exploded View".
NO >> GO TO 4.
4.CHECK TOW MODE SWITCH SIGNAL
With CONSULT-III
1. Select “TOW MODE SW” in “Data Monitor” in “TRANSMISSION”.
2. Check that “TOW MODE SW” turns ON /OFF when tow mode switch is operated.
Is the inspection result normal?
YES >> Replace combination meter. Refer to MWI-85, "Exploded View".
NO >> GO TO 5.
5.CHECK TOW MODE SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect SNOW MODE/TOW MODE/VDC OFF switch assembly (2WD models) or 4WD switch assem-
bly connector (4WD models).
3. Turn ignition switch ON.
4. Check voltage between SNOW MODE/TOW MODE/VDC OFF switch assembly (2WD models) or 4WD
switch assembly connector (4WD models) vehicle side harness connector terminals.
Revision: 2010 May2011 QX56
Page 5250 of 5598
![INFINITI QX56 2011 Factory Service Manual
TM-162
< DTC/CIRCUIT DIAGNOSIS >[7AT: RE7R01B]
SELECTOR LEVER POSITION INDICATOR
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace damaged parts.
5.CHECK SELECTOR LEVER POSITIO INFINITI QX56 2011 Factory Service Manual
TM-162
< DTC/CIRCUIT DIAGNOSIS >[7AT: RE7R01B]
SELECTOR LEVER POSITION INDICATOR
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace damaged parts.
5.CHECK SELECTOR LEVER POSITIO](/img/42/57033/w960_57033-5249.png)
TM-162
< DTC/CIRCUIT DIAGNOSIS >[7AT: RE7R01B]
SELECTOR LEVER POSITION INDICATOR
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace damaged parts.
5.CHECK SELECTOR LEVER POSITION INDICATOR
Check selector lever position indicator. Refer to TM-163, "
Component Inspection (Selector Lever Position Indi-
cator)".
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI-40, "Intermittent Incident".
NO >> Replace damaged parts.
6.CHECK HARNESS BETWEEN A/T SHIFT SELECTOR AND BCM (PART 1)
1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Check continuity between A/T shift selector v ehicle side harness connector terminal and BCM vehicle
side harness connector terminal.
Is the inspection result normal?
YES >> GO TO 7.
NO >> Repair or replace damaged parts.
7.CHECK HARNESS BETWEEN A/T SHIFT SELECTOR AND BCM (PART 2)
Check continuity between A/T shift selector vehicle side harness connector terminal and ground.
Is the inspection result normal?
YES >> GO TO 8.
NO >> Repair or replace damaged parts.
8.CHECK BCM INPUT/OUTPUT SIGNAL
Check BCM input/output signal. Refer to BCS-33, "
Reference Value".
Is the inspection result normal?
A/T shift selector connector Shift position switch connector Condition Continuity
Connector Terminal Connector Terminal
M57 4
M281 10
Selector lever in “M”
position. Existed
1, 2, 3, 4, 5, 8, 9, 12 Not existed 12 Selector lever in “D”
position. Existed
1, 2, 3, 4, 5, 8, 9, 10 Not existed
13 1, 2
Selector lever in “P”
position. Existed
3, 4, 5, 8, 9, 10, 12 Not existed 1, 3 Selector lever in “R”
position. Existed
2, 4, 5, 8, 9, 10, 12 Not existed 1, 4 Selector lever in “D”
position. Existed
2, 3, 5, 8, 9, 10, 12 Not existed 1, 5 Selector lever in “N”
position. Existed
2, 3, 4, 8, 9, 10, 12 Not existed
A/T shift selector vehicle side harness connector BCM vehicle side harness connector Continuity
Connector Terminal Connector Terminal
M57 13 M71 104 Existed
A/T shift selector vehicle side harness connector GroundContinuity
Connector Terminal
M57 13 Not existed
Revision: 2010 May2011 QX56