2006 INFINITI M35 cruise control

AT-216
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: 2006 January2006 M35/M45
3. CHECK CONTROL LINKAGE
Check control linkage.
Refer to AT-228, "Checking of A/T Position" .
OK or NG
OK >> GO TO 4.
NG >> Adjust control linkage. Refer to AT-227, "
Adjustment of A/T Position" .
4. CHECK MANUAL MODE SWITCH
Check manual mode switch. Refer to AT-167, "
DTC P1815 MANUAL MODE SWITCH" .
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.
5. CHECK A/T FLUID CONDITION
1. Remove oil pan. Refer to AT-236, "
Control Valve With TCM and A/T Fluid Temperature Sensor 2" .
2. Check A/T fluid condition. Refer to AT- 5 3 , "
A/T Fluid Condition Check" .
OK or NG
OK >> GO TO 6.
NG >> GO TO 9.
6. DETECT MALFUNCTIONING ITEM
Check malfunction items. If any items are damaged, repair or replace damaged parts. Refer to AT- 6 4 ,
"Symptom Chart" (Symptom No.48).
OK or NG
OK >> GO TO 7.
NG >> Repair or replace damaged parts.
7. CHECK SYMPTOM
Check again. Refer to AT- 6 2 , "
Cruise Test - Part 3" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 8.
8. CHECK TCM
1. Check TCM input/output signals. Refer to AT- 8 9 , "
TCM Input/Output Signal Reference Values" .
2. If NG, recheck A/T assembly harness connector terminals for damage or loose connection with harness
connector.
OK or NG
OK >>INSPECTION END
NG >> Repair or replace damaged parts.
9. DETECT MALFUNCTIONING ITEM
Check malfunction items. If any items are damaged, repair or replace damaged parts. Refer to AT- 6 4 ,
"Symptom Chart" (Symptom No.48).
OK or NG
OK >> GO TO 7.
NG >> Repair or replace damaged parts.

AT-218
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: 2006 January2006 M35/M45
7. CHECK SYMPTOM
Check again. Refer to AT- 6 2 , "
Cruise Test - Part 3" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 8.
8. CHECK TCM
1. Check TCM input/output signals. Refer to AT- 8 9 , "
TCM Input/Output Signal Reference Values" .
2. If NG, recheck A/T assembly harness connector terminals for damage or loose connection with harness
connector.
OK or NG
OK >>INSPECTION END
NG >> Repair or replace damaged parts.
9. DETECT MALFUNCTIONING ITEM
Check malfunction items. If any items are damaged, repair or replace damaged parts. Refer to AT- 6 4 ,
"Symptom Chart" (Symptom No.49).
OK or NG
OK >> GO TO 7.
NG >> Repair or replace damaged parts.
A/T Does Not Shift: 2nd Gear 1st GearNCS001QJ
SYMPTOM:
When shifted from M2 to M1 position in manual mode, does not downshift from 2nd to 1st gear.
DIAGNOSTIC PROCEDURE
1. CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis. Refer to AT- 9 2 , "
SELF-DIAGNOSTIC RESULT MODE" , AT- 1 0 3 , "TCM SELF-DIAG-
NOSTIC PROCEDURE (NO TOOLS)" .
Is any malfunction detected by self-diagnostic results?
YES >> Check malfunctioning system. Refer to AT- 9 2 , "SELF-DIAGNOSTIC RESULT MODE" , AT- 1 0 4 ,
"Judgement Self-diagnosis Code" .
NO >> GO TO 2.
2. CHECK A/T FLUID LEVEL
Check A/T fluid level. Refer to AT-13, "
Checking A/T Fluid" .
OK or NG
OK >> GO TO 3.
NG >> Refill ATF.
3. CHECK CONTROL LINKAGE
Check control linkage.
Refer to AT-228, "Checking of A/T Position" .
OK or NG
OK >> GO TO 4.
NG >> Adjust control linkage. Refer to AT-227, "
Adjustment of A/T Position" .

TROUBLE DIAGNOSIS FOR SYMPTOMS
AT-219
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Revision: 2006 January2006 M35/M45
4. CHECK MANUAL MODE SWITCH
Check manual mode switch. Refer to AT-167, "
DTC P1815 MANUAL MODE SWITCH" .
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.
5. CHECK A/T FLUID CONDITION
1. Remove oil pan. Refer to AT- 2 3 6 , "
Control Valve With TCM and A/T Fluid Temperature Sensor 2" .
2. Check A/T fluid condition. Refer to AT-53, "
A/T Fluid Condition Check" .
OK or NG
OK >> GO TO 6.
NG >> GO TO 9.
6. DETECT MALFUNCTIONING ITEM
Check malfunction items. If any items are damaged, repair or replace damaged parts. Refer to AT- 6 4 ,
"Symptom Chart" (Symptom No.50).
OK or NG
OK >> GO TO 7.
NG >> Repair or replace damaged parts.
7. CHECK SYMPTOM
Check again. Refer to AT- 6 2 , "
Cruise Test - Part 3" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 8.
8. CHECK TCM
1. Check TCM input/output signals. Refer to AT- 8 9 , "
TCM Input/Output Signal Reference Values" .
2. If NG, recheck A/T assembly harness connector terminals for damage or loose connection with harness
connector.
OK or NG
OK >>INSPECTION END
NG >> Repair or replace damaged parts.
9. DETECT MALFUNCTIONING ITEM
Check malfunction items. If any items are damaged, repair or replace damaged parts. Refer to AT- 6 4 ,
"Symptom Chart" (Symptom No.50).
OK or NG
OK >> GO TO 7.
NG >> Repair or replace damaged parts.

COMBINATION METERS
DI-9
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Revision: 2006 January2006 M35/M45
FA I L - S A F E
Combination meter performs fail-safe operation when unified meter and A/C amp. communication is malfunc-
tion.
Solution for communication error between the unified meter & A/C amp. and combination meter
Function Specifications
Speedometer
Reset to zero by suspending communication. Tachometer
Fuel gauge
Water temperature gauge
Illumination control Meter illumination When suspending communication, change to nighttime mode.
Dot matrix LCDPush engine starter
The display turns off by suspending communication. A/T position
ICC system
Buzzer The buzzer turns off by suspending communication.
Warning lamp/indicator lampABS warning lamp
The lamp turns on by suspending communication. Brake warning lamp
CRUISE warning lamp
VDC OFF indicator lamp
SLIP indicator lamp
A/T CHECK warning lamp
The lamp turns off by suspending communication. AWD warning lamp
Oil pressure warning lamp
Door warning lamp
Malfunction indicator lamp
CRUISE indicator lamp
SET indicator lamp
Low tire pressure warning lamp
AFS OFF indicator lamp
Front fog indicator lamp
High beam indicator
Turn signal indicator lamp
Key warning lamp

DI-28
UNIFIED METER AND A/C AMP
Revision: 2006 January2006 M35/M45
UNIFIED METER AND A/C AMPPFP:27760
System DescriptionNKS003UG
For the unified meter and A/C amp., the signal required for controlling the combination meter are integrated in
the A/C auto amp.
COMBINATION METER CONTROL FUNCTION
Unified meter and A/C amp. inputs necessary information for combination meter from each unit with CAN
communication and so on.
Unified meter and A/C amp. outputs signals with communication line (TX, RX) between unified meter and
A/C amp. and combination meter.
Unified meter and A/C amp. corresponds a CONSULT-II function (self-diagnostic results, CAN diagnostic
support monitor and data monitor).
Input/output Signals
Between unified meter and A/C amp. and combination meter.
Unit Input from combination meter Output to combination meter
Unified meter and A/C amp.
Refuel status signal
Low-fuel warning lamp condition signal
Delivery destination data signal
Combination meter receive error signal
Combination meter specifications signal
Odo date signal
Vehicle speed signal
Turn indicator signal
High beam request signal
Ring illumination request signal
Position light request signal
Front fog lamp request signal
SET indicator lamp signal
CRUISE indicator lamp signal
Engine speed signal
Fuel level sensor signal (resistance value)
Engine coolant temperature signal
CAN communication condition signal of A/T
A/T position indicator signal
Manual mode indicator signal
A/T CHECK warning lamp signal
AWD warning lamp signal
Low tire pressure warning lamp signal
VDC OFF indicator lamp signal
SLIP indicator lamp signal
ABS warning lamp signal
Brake warning lamp signal
Malfunction indicator lamp signal
Oil pressure switch signal
Door switch signal
Buzzer request signal
ICC warning lamp signal
Meter display signal
AFS OFF indicator signal

EC-36
[VQ35DE]
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
Revision: 2006 January2006 M35/M45
AUTOMATIC SPEED CONTROL DEVICE (ASCD)PFP:18930
System DescriptionNBS004S8
INPUT/OUTPUT SIGNAL CHART
*: This signal is sent to the ECM through CAN communication line
BASIC ASCD SYSTEM
Refer to Owner's Manual for ASCD operating instructions.
Automatic Speed Control Device (ASCD) allows a driver to keep vehicle at predetermined constant speed
without depressing accelerator pedal. Driver can set vehicle speed in advance between approximately 40 km/
h (25 MPH) and 144 km/h (89 MPH).
ECM controls throttle angle of electric throttle control actuator to regulate engine speed.
Operation status of ASCD is indicated by CRUISE lamp and SET lamp in combination meter. If any malfunc-
tion occurs in ASCD system, it automatically deactivates control.
NOTE:
Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws.
SET OPERATION
Press MAIN switch. (The CRUISE lamp in combination meter illuminates.)
When vehicle speed reaches a desired speed between approximately 40 km/h (25 MPH) and 144 km/h (89
MPH), press SET/COAST switch. (Then SET lamp in combination meter illuminates.)
ACCEL OPERATION
If the RESUME/ACCELERATE switch is pressed during cruise control driving, increase the vehicle speed until
the switch is released or vehicle speed reaches maximum speed controlled by the system.
And then ASCD will keep the new set speed.
CANCEL OPERATION
When any of following conditions exist, cruise operation will be canceled.
CANCEL switch is pressed
More than 2 switches at ASCD steering switch are pressed at the same time (Set speed will be cleared)
Brake pedal is depressed
Selector lever is changed to N, P, R position
Vehicle speed decreased to 13 km/h (8 MPH) lower than the set speed
TCS system is operated
When the ECM detects any of the following conditions, the ECM will cancel the cruise operation and inform
the driver by blinking indicator lamp.
Engine coolant temperature is slightly higher than the normal operating temperature, CRUISE lamp may
blink slowly.
When the engine coolant temperature decreases to the normal operating temperature, CRUISE lamp will
stop blinking and the cruise operation will be able to work by pressing SET/COAST switch or RESUME/
ACCELERATE switch.
Malfunction for some self-diagnoses regarding ASCD control: SET lamp will blink quickly.
If MAIN switch is turned to OFF during ASCD is activated, all of ASCD operations will be canceled and vehicle
speed memory will be erased.
Sensor Input signal to ECM ECM function Actuator
ASCD brake switch Brake pedal operation
ASCD vehicle speed controlElectric throttle control
actuator Stop lamp switch Brake pedal operation
ASCD steering switch ASCD steering switch operation
Park/Neutral position (PNP)
switchGear position
Wheel sensor* Vehicle speed
TCM* Powertrain revolution

AUTOMATIC SPEED CONTROL DEVICE (ASCD)
EC-37
[VQ35DE]
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Revision: 2006 January2006 M35/M45
COAST OPERATION
When the SET/COAST switch is pressed during cruise control driving, decrease vehicle set speed until the
switch is released. And then ASCD will keep the new set speed.
RESUME OPERATION
When the RESUME/ACCELERATE switch is pressed after cancel operation other than pressing MAIN switch
is performed, vehicle speed will return to last set speed. To resume vehicle set speed, vehicle condition must
meet following conditions.
Brake pedal is released
A/T selector lever is in other than P and N positions
Vehicle speed is greater than 40 km/h (25 MPH) and less than 144 km/h (89 MPH)
Component DescriptionNBS004S9
ASCD STEERING SWITCH
Refer to EC-568 .
ASCD BRAKE SWITCH
Refer to EC-585 , and EC-707 .
STOP LAMP SWITCH
Refer to EC-585 , EC-598 and EC-707
ELECTRIC THROTTLE CONTROL ACTUATOR
Refer to EC-607 , EC-613 , EC-619 and EC-624 .
ASCD INDICATOR
Refer to EC-714 .

TROUBLE DIAGNOSIS
EC-141
[VQ35DE]
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Revision: 2006 January2006 M35/M45TRVL AFTER MIL
[km] or [mile]Distance traveled while MIL is activated.
A/F S1 HTR (B1)
[%]
Air fuel ratio (A/F) sensor 1 heater control
value computed by ECM according to the
input signals.
The current flow to the heater becomes
larger as the value increases. A/F S1 HTR (B2)
[%]
AC PRESS SEN
[V]
The signal voltage from the refrigerant
pressure sensor is displayed.
VHCL SPEED SE
[km/h] or [mph]
The vehicle speed computed from the
vehicle speed signal sent from combina-
tion meter is displayed.
SET VHCL SPD
[km/h] or [mph]
The preset vehicle speed is displayed.
MAIN SW
[ON/OFF]
Indicates [ON/OFF] condition from MAIN
switch signal.
CANCEL SW
[ON/OFF]
Indicates [ON/OFF] condition from CAN-
CEL switch signal.
RESUME/ACC SW
[ON/OFF]
Indicates [ON/OFF] condition from
RESUME/ACCELERATE switch signal.
SET SW
[ON/OFF]
Indicates [ON/OFF] condition from SET/
COAST switch signal.
BRAKE SW1
[ON/OFF]
Indicates [ON/OFF] condition from ASCD
brake switch signal.
BRAKE SW2
[ON/OFF]
Indicates [ON/OFF] condition of stop
lamp switch signal.
DIST SW
[ON/OFF]
Indicates [ON/OFF] condition from DIS-
TANCE switch signal.
CRUISE LAMP
[ON/OFF]
Indicates [ON/OFF] condition of CRUISE
lamp determined by the ECM according
to the input signals.
SET LAMP
[ON/OFF]
Indicates [ON/OFF] condition of SET
lamp determined by the ECM according
to the input signals.
FAN D UTY
Indicates a command value for cooling
fan. The value is calculated by ECM
based on input signals.
AC EVA TEMP
Indicates A/C evaporator temperature
sent from “unified meter and A/C amp.”.
AC EVA TARGET
Indicates target A/C evaporator tempera-
ture sent from “unified meter and A/C
amp.”.
ALTDUTY [%]
Indicates the duty ratio of the power gen-
eration command value. The ratio is cal-
culated by ECM based on the battery
current sensor signal.
BAT CUR SEN
[mV]
The signal voltage of battery current sen-
sor is displayed. Monitored item
[Unit]ECM
INPUT
SIG-
NALSMAIN
SIG-
NALSDescription Remarks