2007 INFINITI QX56 ECO mode

DTC U1000 CAN COMMUNICATION LINE
AT-91
< SERVICE INFORMATION >
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DTC U1000 CAN COMMUNICATION LINE
DescriptionINFOID:0000000003532260
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 communication speed and excellent malfunction detection ability.
Many electronic control units are equipped onto a vehicle, and each control unit shares information and links
with other control units during operation (not independent). In CAN communication, control units are con-
nected with 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission
with less wiring. Each control unit transmits/receives data but selectively reads required data only.
On Board Diagnosis LogicINFOID:0000000003532261
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “U1000 CAN COMM CIRCUIT” with CONSULT-II is detected when TCM cannot
communicate to other control units.
Possible CauseINFOID:0000000003532262
Harness or connectors
(CAN communication line is open or shorted.)
DTC Confirmation ProcedureINFOID:0000000003532263
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF”
and wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch “ON”. (Do not start engine.)
2. Select “DATA MONITOR” mode for “ENGINE” with CONSULT-II.
3. Start engine and wait for at least 6 seconds.
4. If DTC is detected, go to AT-93, "
Diagnosis Procedure".
WITH GST
Follow the procedure “WITH CONSULT-II”.
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AT-94
< SERVICE INFORMATION >
DTC P0615 START SIGNAL CIRCUIT
DTC P0615 START SIGNAL CIRCUIT
DescriptionINFOID:0000000003532266
• TCM prohibits cranking other than at “P” or “N” position.
CONSULT-II Reference Value in Data Monitor ModeINFOID:0000000003532267
On Board Diagnosis LogicINFOID:0000000003532268
• This is not an OBD-II self-diagnostic item.
• Diagnostic trouble code “P0615 STARTER RELAY/CIRC” with CONSULT-II is detected when park/neutral
(PNP) relay (starter relay) is switched “ON” other than at “P” or “N” position. (Or when switched “OFF” at “P”
or “N” position).
Possible CauseINFOID:0000000003532269
• Harness or connectors
[The park/neutral position (PNP) relay (starter relay) and TCM circuit is open or shorted.]
• Park/neutral position (PNP) relay (starter relay)
DTC Confirmation ProcedureINFOID:0000000003532270
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF”
and wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch “ON”. (Do not start engine.)
2. Select “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Start engine.
4. Drive vehicle for at least 2 consecutive seconds.
5. If DTC is detected, go to AT-93, "
Diagnosis Procedure" .
Item name Condition Display value
STARTER RELAYSelector lever in “N”,“P” position. ON
Selector lever in other position. OFF
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AT-98
< SERVICE INFORMATION >
DTC P0700 TCM
DTC P0700 TCM
DescriptionINFOID:0000000003532273
The TCM consists of a microcomputer and connectors for signal input and output and for power supply. The
TCM controls the A/T.
On Board Diagnosis LogicINFOID:0000000003532274
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “P0700 TCM” with CONSULT-II is detected when the TCM is malfunctioning.
Possible CauseINFOID:0000000003532275
TCM.
DTC Confirmation ProcedureINFOID:0000000003532276
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF”
and wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch “ON”. (Do not start engine.)
2. Select “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Start engine.
4. Run engine for at least 2 consecutive seconds at idle speed.
5. If DTC is detected, go to AT-98, "
Diagnosis Procedure".
WITH GST
Follow the procedure “With CONSULT-II”.
Diagnosis ProcedureINFOID:0000000003532277
1.CHECK DTC
With CONSULT-II
1. Turn ignition switch “ON”. (Do not start engine.)
2. Select “SELF DIAG RESULTS” mode for “A/T” with CONSULT-
II.
3. Touch “ERASE”.
4. Turn ignition switch “OFF” and wait at least 10 seconds.
5. Perform DTC Confirmation Procedure, AT-98, "
DTC Confirma-
tion Procedure".
Is the
“TCM” displayed again?
YES >> Replace the control valve with TCM. Refer to AT-210,
"Control Valve with TCM and A/T Fluid Temperature
Sensor 2".
NO >>INSPECTION END
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DTC P0705 PARK/NEUTRAL POSITION SWITCH
AT-99
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DTC P0705 PARK/NEUTRAL POSITION SWITCH
DescriptionINFOID:0000000003532278
• The park/neutral position (PNP) switch includes a transmission position switch.
• The transmission range switch detects the selector lever position and sends a signal to the TCM.
CONSULT-II Reference Value in Data Monitor ModeINFOID:0000000003532279
On Board Diagnosis LogicINFOID:0000000003532280
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “P0705 PNP SW/CIRC” with CONSULT-II is detected under the following condi-
tions.
- When TCM does not receive the correct voltage signal from the PNP switch 1, 2, 3, 4 based on the gear
position.
- When no other position but “P” position is detected from “N” positions.
Possible CauseINFOID:0000000003532281
• Harness or connectors
[The park/neutral position (PNP) switch 1, 2, 3, 4 and TCM circuit is open or shorted.]
• Park/neutral position (PNP) switch 1, 2, 3, 4
DTC Confirmation ProcedureINFOID:0000000003532282
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF”
and wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch “ON”. (Do not start engine.)
2. Select “DATA MONITOR” mode for “ENGINE” with CONSULT-II.
3. Start engine.
4. Drive vehicle and maintain the following conditions for at least 2
consecutive seconds.
THRTL POS SEN: More than 1.2V
5. If DTC is detected, go to AT-100, "
Diagnosis Procedure".
WITH GST
Follow the procedure “With CONSULT-II”.
Item name Condition Display value
SLCTLVR POSI Selector lever in “N”,“P” positions. 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
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DTC P0717 TURBINE REVOLUTION SENSOR
AT-103
< SERVICE INFORMATION >
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DTC P0717 TURBINE REVOLUTION SENSOR
DescriptionINFOID:0000000003532285
The turbine revolution sensor detects input shaft rpm (revolutions per minute). It is located on the input side of
the automatic transmission. Monitors revolution of sensor 1 and sensor 2 for non-standard conditions.
CONSULT-II Reference Value in Data Monitor ModeINFOID:0000000003532286
On Board Diagnosis LogicINFOID:0000000003532287
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “P0717 TURBINE REV S/CIRC” with CONSULT-II is detected under the following
conditions.
- When TCM does not receive the proper voltage signal from the sensor.
- When TCM detects an irregularity only at position of 4th gear for turbine revolution sensor 2.
Possible CauseINFOID:0000000003532288
• Harness or connectors
(The sensor circuit is open or shorted.)
• Turbine revolution sensor 1, 2
DTC Confirmation ProcedureINFOID:0000000003532289
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF”
and wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch “ON”. (Do not start engine.)
2. Select “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Start engine and maintain the following conditions for at least 5
consecutive seconds.
VHCL SPEED SE: 40 km/h (25 MPH) or more
ENGINE SPEED: 1,500 rpm or more
ACCELE POS: 0.5/8 or more
Selector lever: “D” position
Gear position (Turbine revolution sensor 1): 4th or 5th posi-
tion
Gear position (Turbine revolution sensor 2): All position
Driving location: Driving the vehicle uphill (increased
engine load) will help maintain the driving conditions required for this test.
4. If DTC is detected, go to AT-103, "
Diagnosis Procedure".
WITH GST
Follow the procedure “With CONSULT-II”.
Diagnosis ProcedureINFOID:0000000003532290
1.CHECK INPUT SIGNAL
With CONSULT-II
Item name Condition Display value (rpm)
TURBINE REV During driving (lock-up ON) Approximately matches the engine speed.
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DTC P0720 VEHICLE SPEED SENSOR A/T (REVOLUTION SENSOR)
AT-105
< SERVICE INFORMATION >
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DTC P0720 VEHICLE SPEED SENSOR A/T (REVOLUTION SENSOR)
DescriptionINFOID:0000000003532291
The revolution sensor detects the revolution of the idler gear parking pawl lock gear and emits a pulse signal.
The pulse signal is sent to the TCM which converts it into vehicle speed.
CONSULT-II Reference Value in Data Monitor ModeINFOID:0000000003532292
On Board Diagnosis LogicINFOID:0000000003532293
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “P0720 VEH SPD SEN/CIR AT” with CONSULT-II is detected under the following
conditions.
- When TCM does not receive the proper voltage signal from the sensor.
- After ignition switch is turned “ON”, irregular signal input from vehicle speed sensor MTR before the vehicle
starts moving.
Possible CauseINFOID:0000000003532294
• Harness or connectors
(The sensor circuit is open or shorted.)
• Revolution sensor
• Vehicle speed sensor MTR
DTC Confirmation ProcedureINFOID:0000000003532295
CAUTION:
• Always drive vehicle at a safe speed.
• Be careful not to rev engine into the red zone on the tachometer.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF”
and wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch “ON”. (Do not start engine.)
2. Select “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Drive vehicle and check for an increase of “VHCL/S SE·A/T”
value in response to “VHCL/S SE·MTR” value.
If the check result is NG, go to AT-107, "
Diagnosis Procedure".
If the check result is OK, go to following step.
4. Select “DATA MONITOR” mode for “ENGINE” with CONSULT-II.
5. Start engine and maintain the following conditions for at least 5
consecutive seconds.
VHCL SPEED SE: 30 km/h (19 MPH) or more
THRTL POS SEN: More than 1.0/8
Selector lever: “D” position
Driving location: Driving the vehicle uphill (increased engine load) will help maintain the driving
conditions required for this test.
If the check result is NG, go to AT-107, "
Diagnosis Procedure".
If the check result is OK, go to following step.
6. Maintain the following conditions for at least 5 consecutive seconds.
ENGINE SPEED: 3,500 rpm or more
THRTL POS SEN: More than 1.0/8
Selector lever: “D” position
Driving location: Driving the vehicle uphill (increased engine load) will help maintain the driving
conditions required for this test.
Item name Condition Display value (km/h)
VHCL/S SE·A/T During driving Approximately matches the speedometer reading.
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DTC P0725 ENGINE SPEED SIGNAL
AT-109
< SERVICE INFORMATION >
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DTC P0725 ENGINE SPEED SIGNAL
DescriptionINFOID:0000000003532298
The engine speed signal is sent from the ECM to the TCM.
CONSULT-II Reference Value in Data Monitor ModeINFOID:0000000003532299
On Board Diagnosis LogicINFOID:0000000003532300
• This is not an OBD-II self-diagnostic item.
• Diagnostic trouble code “P0725 ENGINE SPEED SIG” with CONSULT-II is detected when TCM does not
receive the ignition signal from ECM during engine cranking or running.
Possible CauseINFOID:0000000003532301
Harness or connectors
(The ECM to the TCM circuit is open or shorted.)
DTC Confirmation ProcedureINFOID:0000000003532302
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF”
and wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch “ON” and select “DATA MONITOR” mode for
“A/T” with CONSULT-II.
2. Start engine and maintain the following conditions for at least 10
consecutive seconds.
VHCL SPEED SE: 10 km/h (6 MPH) or more
ACCELE POSI: More than 1/8
Selector lever: “D” position
3. If DTC is detected, go to AT-109, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000003532303
1.CHECK CAN COMMUNICATION LINE
Perform the self-diagnosis. Refer to AT-83, "
CONSULT-II Function (A/T)".
Is a malfunction in the CAN communication indicated in the results?
YES >> Check CAN communication line. Refer to AT- 9 1.
NO >> GO TO 2.
2.CHECK DTC WITH TCM
With CONSULT-II
Item name Condition Display value (rpm)
ENGINE SPEED Engine running Closely matches the tachometer reading.
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DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE
AT-111
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DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE
DescriptionINFOID:0000000003532304
• The torque converter clutch solenoid valve is activated, with the gear in D4, D5 by the TCM in response to
signals sent from the vehicle speed sensor and accelerator pedal position sensor (throttle position sensor).
Torque converter clutch piston operation will then be controlled.
• Lock-up operation, however, is prohibited when A/T fluid temperature is too low.
• When the accelerator pedal is depressed (less than 1/8) in lock-up condition, the engine speed should not
change abruptly. If there is a big jump in engine speed, there is no lock-up.
CONSULT-II Reference Value in Data Monitor ModeINFOID:0000000003532305
On Board Diagnosis LogicINFOID:0000000003532306
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “P0740 TCC SOLENOID/CIRC” with CONSULT-II is detected under the following
conditions.
- When TCM detects an improper voltage drop when it tries to operate the solenoid valve.
- When TCM detects as irregular by comparing target value with monitor value.
Possible CauseINFOID:0000000003532307
• Torque converter clutch solenoid valve
• Harness or connectors
(The solenoid circuit is open or shorted.)
DTC Confirmation ProcedureINFOID:0000000003532308
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF”
and wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch “ON”. (Do not start engine.)
2. Select “DATA MONITOR” mode for “ENGINE” with CONSULT-II.
3. Start engine and maintain the following conditions for at least 5
consecutive seconds.
VHCL SPEED SE: 80 km/h (50 MPH) or more
ACCELE POS: 0.5/8 - 1.0/8
SELECTOR LEVER: “D” position
Driving location: Driving the vehicle uphill (increased
engine load) will help maintain the driving conditions
required for this test.
4. If DTC is detected go to AT- 111 , "
Diagnosis Procedure".
WITH GST
Follow the procedure “With CONSULT-II”.
Diagnosis ProcedureINFOID:0000000003532309
1.CHECK INPUT SIGNAL
With CONSULT-II
Item name Condition Display value (Approx.)
TCC SOLENOIDWhen performing slip lock-up 0.2 - 0.4 A
When performing lock-up 0.4 - 0.6 A
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