2006 INFINITI M35 relay

INDEX FOR DTC
AT-5
D
E
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J
K
L
MA
B
AT
Revision: 2006 January2006 M35/M45
INDEX FOR DTCPFP:00024
Alphabetical Index NCS001JA
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
.
*1: These numbers are prescribed by SAE J2012.
*2: For VQ35DE engine.Items
(CONSULT-II screen terms)DTC
Reference page OBD-II Except OBD-II
CONSULT-II
GST (*1) CONSULT-II only “A/T”
A/T 1ST E/BRAKING — P1731AT-145
ATF PRES SW 1/CIRC — P1841AT-172
ATF PRES SW 3/CIRC — P1843AT-174
ATF PRES SW 5/CIRC — P1845AT-176
ATF PRES SW 6/CIRC — P1846AT-178
A/T INTERLOCK P1730 P1730AT-142
A/T TCC S/V FNCTN P0744 P0744 AT-128
ATF TEMP SEN/CIRC P0710 P1710AT-135
CAN COMM CIRCUIT U1000 U1000AT-105
D/C SOLENOID/CIRC P1762 P1762AT-155
D/C SOLENOID FNCTN P1764 P1764 AT-157
ENGINE SPEED SIG P0725 (*2) P0725AT-124
FR/B SOLENOID/CIRC P1757 P1757AT-151
FR/B SOLENOID FNCT P1759 P1759 AT-153
HLR/C SOL/CIRC P1767 P1767AT-159
HLR/C SOL FNCTN P1769 P1769 AT-161
I/C SOLENOID/CIRC P1752 P1752AT-147
I/C SOLENOID FNCTN P1754 P1754 AT-149
L/PRESS SOL/CIRC P0745 P0745AT-130
LC/B SOLENOID/CIRC P1772 P1772AT-163
LC/B SOLENOID FNCT P1774 P1774 AT-165
MANU MODE SW/CIRC — P1815AT-167
PNP SW/CIRC P0705 P0705AT- 11 3
STARTER RELAY/CIRC — P0615AT-108
TCC SOLENOID/CIRC P0740 P0740AT-126
TCM P0700 P0700AT- 11 2
TP SEN/CIRC A/T P1705 (*2) P1705AT-132
TURBINE REV S/CIRC P0717 P0717AT- 11 7
VEH SPD SE/CIRꞏMTR — P1721AT-140
VEH SPD SEN/CIR AT P0720 P0720AT- 11 9

AT-6
INDEX FOR DTC
Revision: 2006 January2006 M35/M45
DTC No. Index NCS001JB
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
.
*1: These numbers are prescribed by SAE J2012.
*2: For VQ35DE engine.DTC
Items
(CONSULT-II screen terms)Reference page OBD-II Except OBD-II
CONSULT-II
GST (*1)C O N S U LT- I I
only “A/T”
— P0615 STARTER RELAY/CIRCAT- 1 0 8
P0700 P0700 TCMAT- 11 2
P0705 P0705 PNP SW/CIRCAT- 11 3
P0710 P1710 ATF TEMP SEN/CIRCAT- 1 3 5
P0717 P0717 TURBINE REV S/CIRCAT- 11 7
P0720 P0720 VEH SPD SEN/CIR ATAT- 11 9
P0725 (*2) P0725 ENGINE SPEED SIGAT- 1 2 4
P0740 P0740 TCC SOLENOID/CIRCAT- 1 2 6
P0744 P0744 A/T TCC S/V FNCTNAT- 1 2 8
P0745 P0745 L/PRESS SOL/CIRCAT- 1 3 0
P1705 (*2) P1705 TP SEN/CIRC A/TAT- 1 3 2
— P1721 VEH SPD SE/CIRꞏMTRAT- 1 4 0
P1730 P1730 A/T INTERLOCKAT- 1 4 2
— P1731 A/T 1ST E/BRAKINGAT- 1 4 5
P1752 P1752 I/C SOLENOID/CIRCAT- 1 4 7
P1754 P1754 I/C SOLENOID FNCTNAT- 1 4 9
P1757 P1757 FR/B SOLENOID/CIRCAT- 1 5 1
P1759 P1759 FR/B SOLENOID FNCTAT- 1 5 3
P1762 P1762 D/C SOLENOID/CIRCAT- 1 5 5
P1764 P1764 D/C SOLENOID FNCTNAT- 1 5 7
P1767 P1767 HLR/C SOL/CIRCAT- 1 5 9
P1769 P1769 HLR/C SOL FNCTNAT- 1 6 1
P1772 P1772 LC/B SOLENOID/CIRCAT- 1 6 3
P1774 P1774 LC/B SOLENOID FNCTAT- 1 6 5
— P1815 MANU MODE SW/CIRCAT- 1 6 7
— P1841 ATF PRES SW 1/CIRCAT- 1 7 2
— P1843 ATF PRES SW 3/CIRCAT- 1 7 4
— P1845 ATF PRES SW 5/CIRCAT- 1 7 6
— P1846 ATF PRES SW 6/CIRCAT- 1 7 8
U1000 U1000 CAN COMM CIRCUITAT- 1 0 5

A/T CONTROL SYSTEM
AT-31
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AT
Revision: 2006 January2006 M35/M45
TCM FunctionNCS001JP
The function of the TCM is to:
Receive input signals sent from various switches and sensors.
Determine required line pressure, shifting point, lock-up operation, and engine brake operation.
Send required output signals to the respective solenoids.
CONTROL SYSTEM OUTLINE
The A/T senses vehicle operating conditions through various sensors or signals. It always controls the opti-
mum shift position and reduces shifting and lock-up shocks.
CONTROL SYSTEM DIAGRAM
SENSORS (or SIGNAL)TCMACTUATORS
PNP switch
Accelerator pedal position signal
Closed throttle position signal
Wide open throttle position signal
Engine speed signal
A/T fluid temperature sensor
Revolution sensor
Vehicle speed signal
Manual mode switch signal
Stop lamp switch signal
Turbine revolution sensor
ATF pressure switchShift control
Line pressure control
Lock-up control
Engine brake control
Timing control
Fail-safe control
Self-diagnosis
CONSULT-II communication line
Duet-EA control
CAN systemInput clutch solenoid valve
Direct clutch solenoid valve
Front brake solenoid valve
High and low reverse clutch
solenoid valve
Low coast brake solenoid valve
Torque converter clutch solenoid
valve
Line pressure solenoid valve
A/T CHECK indicator lamp
Back-up lamp relay
Sta r te r re l a y
SCIA5325E

AT-32
A/T CONTROL SYSTEM
Revision: 2006 January2006 M35/M45
CAN CommunicationNCS001JQ
SYSTEM DESCRIPTION
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 error detection ability. Many elec-
tronic 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 connected 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. Refer to LAN-34, "
CAN
Communication Unit" .
Input/Output Signal of TCMNCS001JR
*1: Spare for vehicle speed sensorꞏA/T (revolution sensor)
*2: Spare for accelerator pedal position signal
*3: If these input and output signals are different, the TCM triggers the fail-safe function.
*4: Used as a condition for starting self-diagnostics; if self-diagnostics are not started, it is judged that there is some kind of error.
*5: Input by CAN communications.
*6: Output by CAN communications.Control itemLine
pressure
controlVehicle
speed
controlShift
controlLock-up
controlEngine
brake
controlFail-safe
function
(*3)Self-diag-
nostics
function
InputAccelerator pedal position signal
(*5)XXXXXXX
Vehicle speed sensor A/T
(revolution sensor)XXXXXXX
Vehicle speed sensor MTR
(*1) (*5)X
Closed throttle position signal
(*5)X(*2) X X X X(*4)
Wide open throttle position signal
(*5)XX(*4)
Turbine revolution sensor 1 X X X X X
Turbine revolution sensor 2
(for 4th speed only)X XXXX
Engine speed signals
(*5)XXXXXXX
Stop lamp switch signal
(*5)XXX X(*4)
A/T fluid temperature sensors 1, 2XXXX XX
ASCD or ICC
sensor inte-
grated unitOperation signal
(*5)XXX
Overdrive cancel
signal
(*5)X
Out-
putDirect clutch solenoid
(ATF pressure switch 5)XX XX
Input clutch solenoid
(ATF pressure switch 3)XX XX
High and low reverse clutch solenoid
(ATF pressure switch 6)XX XX
Front brake solenoid
(ATF pressure switch 1)XX XX
Low coast brake solenoid
(ATF pressure switch 2)XX XXX
Line pressure solenoidXXXXXXX
TCC solenoid X X X
Self-diagnostics table
(*6)X
Starter relayXX

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

TROUBLE DIAGNOSIS
AT-89
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: 2006 January2006 M35/M45
TCM Input/Output Signal Reference ValuesNCS001KG
A/T ASSEMBLY HARNESS CONNECTOR TERMINAL LAYOUT
TCM INSPECTION TABLE
Data are reference value and are measured between each terminal and ground.
SCIA1658E
TerminalWire
colorItem Condition Data (Approx.)
1R/WPower supply
(Memory back-up)Always Battery voltage
2R/WPower supply
(Memory back-up)Always Battery voltage
3 L CAN-H – –
4VK-line (CONSULT-
II signal)The terminal is connected to the data link connector for CONSULT-II. –
5 B Ground Always 0V
6 Y/R Power supply– Battery voltage
–0V
7R/LBack-up lamp
relaySelector lever in “R” position. 0V
Selector lever in other positions. Battery voltage
8 P CAN-L – –
9 GR/R Starter relaySelector lever in “N”, “P” positions. Battery voltage
Selector lever in “R”, “D” positions. 0V
10 B Ground Always 0V

TROUBLE DIAGNOSIS
AT-91
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Revision: 2006 January2006 M35/M45
FR/B SOLENOIDFront brake engaged. Refer to AT- 2 1 . 0.6 - 0.8A
Front brake disengaged. Refer to AT- 2 1
. 0 - 0.05A
I/C SOLENOIDInput clutch disengaged. Refer to AT- 2 1
. 0.6 - 0.8A
Input clutch engaged. Refer to AT- 2 1
. 0 - 0.05A
D/C SOLENOIDDirect clutch disengaged. Refer to AT- 2 1
. 0.6 - 0.8A
Direct clutch engaged. Refer to AT- 2 1
. 0 - 0.05A
HLR/C SOLHigh and low reverse clutch disengaged. Refer to AT- 2 1
. 0.6 - 0.8A
High and low reverse clutch engaged. Refer to AT- 2 1
. 0 - 0.05A
STARTER RELAYSelector lever in “N”, “P” positions. ON
Selector lever in “R”, “D” positions. OFF
SLCT LVR POSISelector lever in “N”, “P” positions. N/P
Selector lever in “R” position. R
Selector lever in “D” position. D
ON OFF SOLLow coast brake engaged. Refer to AT- 2 1
.ON
Low coast brake disengaged. Refer to AT- 2 1
. OFF
ATF PRES SW 1Front brake engaged. Refer to AT- 2 1
.ON
Front brake disengaged. Refer to AT- 2 1
.OFF
ATF PRES SW 2Low coast brake engaged. Refer to AT- 2 1
.ON
Low coast brake disengaged. Refer to AT- 2 1
. OFF
ATF PRES SW 3Input clutch engaged. Refer to AT- 2 1
.ON
Input clutch disengaged. Refer to AT- 2 1
.OFF
ATF PRES SW 5Direct clutch engaged. Refer to AT- 2 1
.ON
Direct clutch disengaged. Refer to AT- 2 1
.OFF
ATF PRES SW 6High and low reverse clutch engaged. Refer to AT- 2 1
. ON
High and low reverse clutch disengaged Refer to AT- 2 1
. OFF
MANU MODE SWManual shift gate position (neutral) ON
Other than the above OFF
NON M-MODE SWManual shift gate position OFF
Other than the above ON
UP SW LEVERSelector lever: + side ON
Other than the above OFF
DOWN SW LEVERSelector lever: - side ON
Other than the above OFF
GEAR During driving 1, 2, 3, 4, 5Item name Condition Display value
(Approx.)

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