turn signals INFINITI M35 2006 Factory Service Manual

AT-44
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
TROUBLE DIAGNOSISPFP:00004
DTC Inspection Priority ChartNCS001K2
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
NOTE:
If DTC “U1000” is displayed with other DTC, first perform the trouble diagnosis for “DTC U1000 CAN
COMMUNICATION LINE”. Refer to AT- 1 0 5
.
Fail-safeNCS001K3
The TCM has an electrical fail-safe mode. This mode makes it possible to operate even if there is an error in a
main electronic control input/output signal circuit.
In fail-safe mode, even if the selector lever is “D” or “M” mode, the A/T is fixed in 2nd, 4th and 5th (depending
on the breakdown position), so the customer should feel “slipping” or “poor acceleration”.
Even when the electronic circuits are normal, under special conditions (for example, when slamming on the
brake with the wheels spinning drastically and stopping the tire rotation), the A/T can go into fail-safe mode. If
this happens, switch OFF the ignition switch for 10 seconds, then switch it ON again to return to the normal
shift pattern. Therefore, the customer's vehicle has returned to normal, so handle according to the “WORK
FLOW” (Refer to AT- 4 7
).
FAIL-SAFE FUNCTION
If any malfunction occurs in a sensor or solenoid, this function controls the A/T to mark driving possible.
Vehicle Speed Sensor
Signals are input from two systems - from vehicle speed sensor A/T (revolution sensor) installed on the A/
T and from combination meter so normal driving is possible even if there is a malfunction in one of the
systems. And if vehicle speed sensor A/T (revolution sensor) has unusual cases, 5th gear and manual
mode are prohibited.
Accelerator Pedal Position Sensor
If there is a malfunction in one of the systems, the accelerator opening angle is controlled by ECM accord-
ing to a pre-determined accelerator angle to make driving possible. And if there are malfunctions in tow
systems, the engine speed is fixed by ECM to a pre-determined engine speed to make driving possible.
Throttle Position Sensor
If there is a malfunction in one of the systems, the accelerator opening angle is controlled by ECM accord-
ing to a pre-determined accelerator angle to make driving possible. And if there are malfunctions in tow
systems, the accelerator opening angle is controlled by the idle signal sent from the ECM which is based
on input indicating either idle condition or off-idle condition (pre-determined accelerator opening) in order
to make driving possible.
PNP Switch
In the unlikely event that a malfunction signal enters the TCM, the position indicator is switched OFF, the
starter relay is switched OFF (starter starting is disabled), the back-up lamp relay switched OFF (back-up
lamp is OFF) and the position is fixed to the “D” position to make driving possible.
Starter Relay
The starter relay is switched OFF. (Starter starting is disabled.)
Priority Detected items (DTC)
1 U1000 CAN communication line
2 Except above

AT-92
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
CONSULT-II SETTING PROCEDURE
Refer to GI-39, "CONSULT-II Start Procedure" .
SELF-DIAGNOSTIC RESULT MODE
After performing self-diagnosis, place check marks for results on the AT- 4 8 , "DIAGNOSTIC WORKSHEET" .
Reference pages are provided following the items.
Operation Procedure
1. Touch “SELF-DIAG RESULTS” on “SELECT DIAG MODE”
screen.
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-
diagnosisOBD-II (DTC)
Reference
page
“A/T” with
CONSULT-IIMIL indicator
lamp*1,
“ENGINE” with
CONSULT-II or
GST
CAN COMM CIR-
CUIT
When a malfunction is detected in CAN communications. U1000 U1000AT-105
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 malfunction.)P0615 —AT-108
TCMTCM is malfunctioning P0700 P0700AT- 11 2
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 P0705AT- 11 3
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 revolution sensor 2.P0717 P0717AT- 11 7
VEH SPD SEN/
CIR AT
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 P0720AT- 11 9
ENGINE SPEED
SIGTCM does not receive the CAN communication signal from
the ECM.P0725 P0725*3AT-124
TCC SOLENOID/
CIRCNormal voltage not applied to solenoid due to cut line,
short, or the like.P0740 P0740AT-126
A/T TCC S/V
FNCTNA/T cannot perform lock-up even if electrical circuit is good.
TCM detects as irregular by comparing difference value
with slip rotation.P0744 P0744*2AT-128

AT-112
DTC P0700 TCM
Revision: 2006 January2006 M35/M45
DTC P0700 TCMPFP:31036
DescriptionNCS001KW
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 LogicNCS001KX
This is an OBD-II self-diagnostic item.
Diagnostic trouble code “P0700 TCM” with CONSULT-II is detected when TCM is malfunctioning.
Possible CauseNCS001KY
TCM.
DTC Confirmation ProcedureNCS001KZ
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 “ECU INPUT SIGNALS” or “MAIN SIGNALS” in “DATA
MONITOR” mode for “A/T” with CONSULT-II.
3. Touch “START”.
4. Start engine.
5. Run engine for at least 2 consecutive seconds at idle speed.
6. If DTC is detected, go to AT-112, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II”.
Diagnostic ProcedureNCS001L0
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 for at least 10 seconds.
5. Perform “DTC confirmation procedure”. Refer to AT- 11 2 , "
DTC
Confirmation Procedure" .
Is the
“TCM” displayed again?
YES >> Replace the control valve with TCM. Refer to AT- 2 3 6 ,
"Control Valve With TCM and A/T Fluid Temperature
Sensor 2" .
NO >>INSPECTION END
BCIA0030E
BCIA0031E

DTC P0705 PARK/NEUTRAL POSITION SWITCH
AT-113
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Revision: 2006 January2006 M35/M45
DTC P0705 PARK/NEUTRAL POSITION SWITCHPFP:32006
DescriptionNCS001L1
The park/neutral position (PNP) switch includes a A/T position switch.
The A/T range switch detects the selector lever position and sends a signal to the TCM.
CONSULT-II Reference ValueNCS001L2
On Board Diagnosis LogicNCS001L3
This is an OBD-II self-diagnostic item.
Diagnostic trouble code “P0705 PNP SW/CIRC” with CONSULT-II or 9th judgement flicker without CON-
SULT-II is detected under the following conditions.
–When TCM does not receive the correct voltage signal from the PNP switches 1, 2, 3 and 4 based on the
gear position.
–When no other position but “P” position is detected from “N” position.
Possible CauseNCS001L4
Harness or connectors
[Park/neutral position (PNP) switches 1, 2, 3, 4 and TCM circuit is open or shorted.]
Park/neutral position (PNP) switches 1, 2, 3 and 4
DTC Confirmation ProcedureNCS001L5
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 “ECU INPUT SIGNALS” or “MAIN SIGNALS” in “DATA
MONITOR” mode for “A/T” with CONSULT-II.
3. Touch “START”.
4. Start engine.
5. Drive vehicle and maintain the following conditions for at least 2
consecutive seconds.
ACCELE POSI: More than 1.0/8
6. If DTC is detected, go to AT-115, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II”.
Item name Condition Display value
SLCT LVR POSISelector lever in “N”, “P” positions. N/P
Selector lever in “R” position. R
Selector lever in “D” position. D
BCIA0030E

DTC P0717 TURBINE REVOLUTION SENSOR
AT-117
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Revision: 2006 January2006 M35/M45
DTC P0717 TURBINE REVOLUTION SENSORPFP:31935
DescriptionNCS001L8
The turbine revolution sensor detects input shaft rpm (revolutions per minute). It is located on the input side of
the automatic A/T. Monitors revolution of sensor 1 and sensor 2 for non-standard conditions.
CONSULT-II Reference ValueNCS001L9
On Board Diagnosis LogicNCS001LA
This is an OBD-II self-diagnostic item.
Diagnostic trouble code “P0717 TURBINE REV S/CIRC” with CONSULT-II or 11th judgement flicker with-
out 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 CauseNCS001LB
Harness or connectors
(Sensor circuit is open or shorted.)
Turbine revolution sensor 1 and/or 2
DTC Confirmation ProcedureNCS001LC
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 “MAIN SIGNALS” in “DATA MONITOR” mode for “A/T”
with CONSULT-II.
3. Touch “START”.
4. Start engine and maintain the following conditions for at least 5
consecutive seconds.
VHCL/S SEꞏA/T: 40 km/h (25 MPH) or more
ENGINE SPEED: 1,500 rpm or more
ACCELE POSI: More than 0.5/8
SLCT LVR POSI: “D” position
GEAR (Turbine revolution sensor 1): “4” or “5” position
GEAR (Turbine revolution sensor 2): All positions
Driving location: Driving the vehicle uphill (increased engine load) will help maintain the driving
conditions required for this test.
5. If DTC is detected, go to AT-118, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II”.
Item name Condition Display value
TURBINE REV During driving (lock-up ON) Approximately matches the engine speed.
BCIA0030E

DTC P0720 VEHICLE SPEED SENSOR A/T (REVOLUTION SENSOR)
AT-119
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Revision: 2006 January2006 M35/M45
DTC P0720 VEHICLE SPEED SENSOR A/T (REVOLUTION SENSOR)PFP:32702
DescriptionNCS001LE
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 ValueNCS001LF
On Board Diagnosis LogicNCS001LG
This is an OBD-II self-diagnostic item.
Diagnostic trouble code “P0720 VEH SPD SEN/CIR AT” with CONSULT-II or 1st judgement flicker without
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 CauseNCS001LH
Harness or connectors
(Sensor circuit is open or shorted.)
Revolution sensor
Vehicle speed sensor MTR
DTC Confirmation ProcedureNCS001LI
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 “ECU INPUT SIGNALS” in “DATA MONITOR” mode for
“A/T” with CONSULT-II.
3. Touch “START”.
4. Drive vehicle and check for an increase of “VHCL/S SEꞏA/T”
value in response to “VHCL/S SEꞏMTR” value.
If the check result is NG, go to AT-122, "
Diagnostic Procedure" .
If the check result is OK, go to following step.
5. Select “DATA MONITOR” mode for “A/T” with CONSULT-II.
6. Start engine and maintain the following conditions for at least 5
consecutive seconds.
VHCL/S SEꞏA/T: 30 km/h (19 MPH) or more
ACCELE POSI: More than 1.0/8
SLCT LVR POSI: “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-122, "
Diagnostic Procedure" .
If the check result is OK, go to following step.
7. Maintain the following conditions for at least 5 consecutive seconds.
ENGINE SPEED: 3,500 rpm or more
ACCELE POSI: More than 1.0/8
SLCT LVR POSI: “D” position
Item name Condition Display value
VHCL/S SEꞏA/T During driving Approximately matches the speedometer reading.
BCIA0030E

AT-122
DTC P0720 VEHICLE SPEED SENSOR A/T (REVOLUTION SENSOR)
Revision: 2006 January2006 M35/M45
Diagnostic ProcedureNCS001LK
1. CHECK INPUT SIGNAL
With CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for
“A/T” with CONSULT-II.
3. Start engine.
4. Read out the value of “VHCL/S SEꞏA/T” while driving.
Check the value changes according to driving speed.
OK or NG
OK >> GO TO 6.
NG >> GO TO 2.
2. CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer to AT- 1 8 0 , "
MAIN POWER SUPPLY AND GROUND CIR-
CUIT" .
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3. DETECT MALFUNCTIONING ITEM
Check the following.
The A/T assembly harness connector pin terminals for damage or loose connection with harness connec-
tor.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
Item name Condition Display value
VHCL/S SEꞏA/T During drivingApproximately matches
the speedometer reading.
SCIA2148E

AT-124
DTC P0725 ENGINE SPEED SIGNAL
Revision: 2006 January2006 M35/M45
DTC P0725 ENGINE SPEED SIGNALPFP:24825
DescriptionNCS001LL
The engine speed signal is sent from the ECM to the TCM.
CONSULT-II Reference ValueNCS001LM
On Board Diagnosis LogicNCS001LN
This is an OBD-II self-diagnostic item. (For VQ35DE engine)
Diagnostic trouble code “P0725 ENGINE SPEED SIG” with CONSULT-II or 16th judgement flicker without
CONSULT-II is detected when TCM does not receive the ignition signal from ECM during engine cranking
or running.
Possible CauseNCS001LO
Harness or connectors
(ECM to TCM circuit is open or shorted.)
DTC Confirmation ProcedureNCS001LP
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 “MAIN SIGNALS” in “DATA MONITOR” mode for “A/T”
with CONSULT-II.
3. Touch “START”.
4. Start engine and maintain the following conditions for at least 10
consecutive seconds.
VHCL/S SEꞏA/T: 10 km/h (6 MPH) or more
ACCELE POSI: More than 1.0/8
SLCT LVR POSI: “D” position
5. If DTC is detected, go to AT-125, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II”.
Item name Condition Display value
ENGINE SPEED Engine running Closely matches the tachometer reading.
BCIA0030E

AT-126
DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE
Revision: 2006 January2006 M35/M45
DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVEPFP:31940
DescriptionNCS001LR
The torque converter clutch solenoid valve is activated, with the gear in D3 , D4 , D5 , M4 and M5 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 ValueNCS001LS
On Board Diagnosis LogicNCS001LT
This is an OBD-II self-diagnostic item.
Diagnostic trouble code “P0740 TCC SOLENOID/CIRC” with CONSULT-II or 3rd judgement flicker with-
out 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 CauseNCS001LU
Torque converter clutch solenoid valve
Harness or connectors
(Solenoid circuit is open or shorted.)
DTC Confirmation ProcedureNCS001LV
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 “MAIN SIGNALS” in “DATA MONITOR” mode for “A/T”
with CONSULT-II.
3. Touch “START”.
4. Start engine and maintain the following conditions for at least 5
consecutive seconds.
VHCL/S SEꞏA/T: 80 km/h (50 MPH) or more
ACCELE POSI: 0.5/8 - 1.0/8
SLCT LVR POSI: “D” position
Driving location: Driving the vehicle uphill (increased
engine load) will help maintain the driving conditions
required for this test.
5. If DTC is detected go to AT-127, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II”.
Item name Condition Display value (Approx.)
TCC SOLENOID Lock-up is active 0.4 - 0.6A
BCIA0030E

DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE
AT-127
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Revision: 2006 January2006 M35/M45
Diagnostic ProcedureNCS001LW
1. CHECK INPUT SIGNAL
With CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Select “MAIN SIGNALS” in “DATA MONITOR” mode for “A/T”
with CONSULT-II.
3. Start engine.
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 TCM power supply and ground circuit. Refer to AT-180, "
MAIN POWER SUPPLY AND GROUND CIR-
CUIT" .
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3. DETECT MALFUNCTIONING ITEM
Check the following.
The A/T assembly harness connector pin terminals for damage or loose connection with harness connec-
tor.
OK or NG
OK >> Replace the control valve with TCM. Refer to AT- 2 3 6 , "Control Valve With TCM and A/T Fluid
Temperature Sensor 2" .
NG >> Repair or replace damaged parts.
4. CHECK DTC
Perform “DTC Confirmation Procedure”. Refer to AT- 1 2 6 , "
DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 2.
Item name Condition Display value (Approx.)
TCC SOLENOID Lock-up is active 0.4 - 0.6A
SCIA4793E