2011 INFINITI QX56 Factory Service Manual

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Page 5225 of 5598

INFINITI QX56 2011 Factory Service Manual
P1705 TP SENSORTM-137
< DTC/CIRCUIT DIAGNOSIS > [7AT: RE7R01B]
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P1705 TP SENSOR
DTC LogicINFOID:0000000006226852
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECON

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

Page 5227 of 5598

INFINITI QX56 2011 Factory Service Manual
P1721 VEHICLE SPEED SIGNALTM-139
< DTC/CIRCUIT DIAGNOSIS > [7AT: RE7R01B]
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Diagnosis ProcedureINFOID:0000000006226856
1.CHECK DTC OF UNIFIED METER AND A/C AMP.
With

Page 5228 of 5598

INFINITI QX56 2011 Factory Service Manual
TM-140
< DTC/CIRCUIT DIAGNOSIS >[7AT: RE7R01B]
P1730 INTERLOCK
P1730 INTERLOCK
DescriptionINFOID:0000000006226857
Fail-safe function to detect interlock conditions.
DTC LogicINFOID:0000000006226858
D

Page 5229 of 5598

INFINITI QX56 2011 Factory Service Manual
P1730 INTERLOCKTM-141
< DTC/CIRCUIT DIAGNOSIS > [7AT: RE7R01B]
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Diagnosis ProcedureINFOID:0000000006226860
1.DETECT MALFUNCTIONING ITEM
Disassemble the A/T assembly to

Page 5230 of 5598

INFINITI QX56 2011 Factory Service Manual
TM-142
< DTC/CIRCUIT DIAGNOSIS >[7AT: RE7R01B]
P1734 7GR INCORRECT RATIO
P1734 7GR INCORRECT RATIO
DescriptionINFOID:0000000006226861
This malfunction is detected when the A/T does not shift
into 7G

TM-142
< DTC/CIRCUIT DIAGNOSIS >[7AT: RE7R01B]
P1734 7GR INCORRECT RATIO
P1734 7GR INCORRECT RATIO
DescriptionINFOID:0000000006226861
This malfunction is detected when the A/T does not shift
into 7GR position as instructed by TCM. This is not
only caused by electrical malfunction (circuits open or s horted) but by mechanical malfunction such as control
valve sticking, improper solenoid valve operation, etc.
DTC LogicINFOID:0000000006226862
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
“ TM-143, "
Diagnosis Procedure"” must be performed before star ting “DTC CONFIRMATION PROCE-
DURE”.
Never perform “DTC CONFIRMATION PROCEDURE” before completing the repair, which may cause secondary malfunction.
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 ATF TEMPERATURE
With CONSULT-III
1. Start the engine.
2. Select “ATF TEMP 1” in “Data Monitor” in “TRANSMISSION”.
3. Check ATF temperature is in the following range.
With GST
1. Start the engine.
2. Drive vehicle for approximately 5 minutes in urban areas.
Is ATF temperature within specified range?
YES >> GO TO 3.
NO >> Drive vehicle to warm ATF or stop engine to cool ATF.
3.CHECK SYMPTOM (PART 1)
With CONSULT-III
1. Select “7TH GR FNCTN P1734” in “DTC & SRT confirmation” in “TRANSMISSION”.
2. Drive vehicle with manual mode and maintain the following conditions.
DTC Trouble diagnosis name DTC is detected if... Possible cause
P1734 Gear 7 Incorrect Ratio The gear ratio is:
0.821 or more
0.729 or less Input clutch solenoid valve
Direct clutch solenoid valve
High and low reverse clutch
solenoid valve
Front brake solenoid valve
Low brake solenoid valve
2346 brake solenoid valve
Anti-interlock solenoid valve
Each clutch and brake
Output speed sensor
Input speed sensor 1, 2
Hydraulic control circuit
ATF TEMP 1 : 20 °C (68 °F) – 140 °C (284 °F)
Revision: 2010 May2011 QX56

Page 5231 of 5598

INFINITI QX56 2011 Factory Service Manual
P1734 7GR INCORRECT RATIOTM-143
< DTC/CIRCUIT DIAGNOSIS > [7AT: RE7R01B]
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3. Keep the current driving status for 2 seconds or more if CONSULT-III screen changes from �

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

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