2008 INFINITI QX56 Factory Service Manual

Page 3609 of 4083

INFINITI QX56 2008  Factory Service Manual TM-62
< COMPONENT DIAGNOSIS >
P0735 5GR INCORRECT RATIO
Diagnosis Procedure
INFOID:0000000001604074
1.CHECK CAN COMMUNICATION LINE
Perform self-diagnosis. Refer to TM-32, "
CONSULT-III Functi on (TRAN

Page 3610 of 4083

INFINITI QX56 2008  Factory Service Manual P0740 TORQUE CONVERTERTM-63
< COMPONENT DIAGNOSIS >
CEF
G H
I
J
K L
M A
B
TM
N
O P
P0740 TORQUE CONVERTER
DescriptionINFOID:0000000001604075
• The torque converter clutch solenoid valve is activated

Page 3611 of 4083

INFINITI QX56 2008  Factory Service Manual TM-64
< COMPONENT DIAGNOSIS >
P0740 TORQUE CONVERTER
4. Read out the value of “TCC SOLENOID” while driving.
OK or NG
OK >> GO TO 4.
NG >> GO TO 2.
2.CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check

Page 3612 of 4083

INFINITI QX56 2008  Factory Service Manual P0744 TORQUE CONVERTERTM-65
< COMPONENT DIAGNOSIS >
CEF
G H
I
J
K L
M A
B
TM
N
O P
P0744 TORQUE CONVERTER
DescriptionINFOID:0000000001604081
This malfunction is detected when the A/T does not lock- up

Page 3613 of 4083

INFINITI QX56 2008  Factory Service Manual TM-66
< COMPONENT DIAGNOSIS >
P0744 TORQUE CONVERTER
Diagnosis Procedure
INFOID:0000000001604086
1.CHECK INPUT SIGNAL
With CONSULT-III
1. Turn ignition switch “ON”. 
2. Select “MAIN SIGNALS” i

Page 3614 of 4083

INFINITI QX56 2008  Factory Service Manual P0745 PRESSURE CONTROL SOLENOID ATM-67
< COMPONENT DIAGNOSIS >
CEF
G H
I
J
K L
M A
B
TM
N
O P
P0745 PRESSURE CONTROL SOLENOID A
DescriptionINFOID:0000000001604087
The line pressure solenoid valve regu

Page 3615 of 4083

INFINITI QX56 2008  Factory Service Manual TM-68
< COMPONENT DIAGNOSIS >
P0745 PRESSURE CONTROL SOLENOID A
Check TCM power supply and ground circuit. Refer to TM-92, "Diagnosis Procedure".
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damage

Page 3616 of 4083

INFINITI QX56 2008  Factory Service Manual P1705 TP SENSORTM-69
< COMPONENT DIAGNOSIS >
CEF
G H
I
J
K L
M A
B
TM
N
O P
P1705 TP SENSOR
DescriptionINFOID:0000000001604093
Electric throttle control actuator consists of throttle control motor, ac