page 80 INFINITI FX35 2007 Service Manual

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION ACS-31
[ICC]
C
D E
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M A
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ACS
Revision: 2006 July 2007 FX35/FX45
CONSULT-II Function (ICC)NKS003F1
DESCRIPTION
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II BASIC OPERATION
Refer to GI-38, "CONSULT-II Start Procedure" .
Test mode Function Reference page
WORK SUPPORT

Monitors aiming direction to facilitate laser beam aiming operation.

Indicates causes of automatic cancellation of the ICC system. ACS-32
SELF-DIAGNOSTIC RESULTS Displays malfunctioning system memorized in ICC unit.
ACS-32
DATA MONITOR Displays real-time input/output data of ICC unit.ACS-33
CAN DIAG SUPPORT MNTR The results of transmit/receive diagnosis of CAN communication can be read. LAN-44
ACTIVE TEST Enables operation check of electrical loads by sending driving signal to them.ACS-35
ECU PART NUMBER Displays part number of ICC unit. —

ACS-42
[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: 2006 July 2007 FX35/FX45
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMSPFP:00000
Diagnostic Trouble Code (DTC) ChartNKS003F3
×: Applicable
DTC No. CONSULT-II
screen terms ICC
system
warning lamp Fail-safe
Malfunctions detected where... Refer-
ence
page
Vehicle-
to-
vehicle
distance
control mode Conven-
tional
(fixed
speed) cruise
control
mode Brake
assist
(with
preview
function)
11 CONTROL UNIT ××××

ICC unit internal malfunctionACS-44
20 CAN COMM CIRCUIT ××××
ICC unit detected CAN communi-
cation malfunction. ACS-44
31 POWER SUPPLY CIR
××××
ICC unit power supply voltage is
excessively low (less than 8 V). ACS-44
34 POWER SUPPLY CIR2
××××
ICC unit power supply voltage is
excessively high (more than 19 V). ACS-44
41 VHCL SPEED SE CIRC
××××

Wheel sensor malfunction.

ABS actuator and electric unit (
control unit) malfunction

AT vehicle speed sensor malfunc-
tion

TCM malfunction ACS-45
43 ABS/TCS/VDC CIRC
××××
VDC/TCS/ABS system malfunc-
tion ACS-46
45 BRAKE SW/STOP L SW
××××

Brake and stop lamp switch har-
ness is open or shorted.

Brake and stop lamp switch is ON
or stuck to OFF.

Brake and stop lamp switch is
stuck to ON. ACS-46
46 OPERATION SW CIRC
×××

ICC steering switch harness or
spiral cable is open or shorted.

ICC steering switch malfunction ACS-48
61 PRESS SEN CIRCUIT
×× ×

Brake pressure sensor harness is
open or shorted.

Brake pressure sensor malfunc-
tion

Brake pressure sensor input circuit
malfunction ACS-50
62
BOOSTER SOL/V
CIRCUIT ×× ×

Solenoid harness is open or
shorted.

Solenoid is open.

Solenoid drive circuit malfunction ACS-51
63 RELEASE SW CIRCUIT
××××

Release switch harness is open or
shorted.

Release switch malfunction

Release switch input circuit mal-
function ACS-52
65 PRESSURE CONTROL
×× ×
Booster malfunctionACS-54
74 LASER BEAM OFF CNTR ×× ×
Laser beam of ICC sensor is off
the aiming point. ACS-55

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS ACS-43
[ICC]
C
D E
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M A
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ACS
Revision: 2006 July 2007 FX35/FX45
90 STOP LAMP RLY FIX×× ×
Normally open terminal of stop
lamp relay is stuck. ACS-55
92 ECM CIRCUIT
××××

ECM malfunction

Accelerator pedal position sensor
malfunction

ICC unit malfunction ACS-61
96 NP RANGE
×××

Park/neutral position switch har-
ness is open or shorted.

Park/neutral position switch mal-
function.

TCM malfunction ACS-62
97 AT CIRCUIT
×××
TCM malfunctionACS-64
98 GEAR POSITION ×××

TCM malfunction

AT turbine revolution sensor mal-
function

AT vehicle speed sensor malfunc-
tion ACS-64
102 RADAR STAIN
×× ×
ICC sensor body window has con-
tamination. ACS-65
103 LASER SENSOR FAIL
×× ×
ICC sensor internal malfunctionACS-65
104 LASER AIMING INCMP ×× ×
Laser beam aiming of ICC sensor
is not adjusted. ACS-66
107 LASER COMM FAIL
×× ×

CAN data received by ICC sensor
is strange (from ICC unit, combi-
nation meter or ECM). ACS-66
109 LASER HIGH TEMP
×× ×
Temperature around ICC sensor is
excessively high. ACS-66
DTC
No. CONSULT-II
screen terms ICC
system
warning
lamp Fail-safe
Malfunctions detected where... Refer-
ence
page
Vehicle-
to-
vehicle
distance control
mode Conven-
tional
(fixed
speed)
cruise
control mode Brake
assist (with
preview
function)

TROUBLE DIAGNOSIS FOR SYMPTOMS ACS-67
[ICC]
C
D E
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M A
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ACS
Revision: 2006 July 2007 FX35/FX45
TROUBLE DIAGNOSIS FOR SYMPTOMSPFP:00007
Symptom ChartNKS003FQ
Symptoms Reference page
Operation MAIN switch does not switch ON.
Symptom 1
ACS-68
MAIN switch does not switch OFF. Symptom 1
ACS-68
Cruise does not function for setting (powering functions). Symptom 2
ACS-68
CANCEL switch does not function. Symptom 3
ACS-69
Resume does not function. Symptom 3
ACS-69
Set speed does not increase. Symptom 3
ACS-69
Set distance to the vehicle ahead cannot be changed. Symptom 3
ACS-69
ICC is not cancelled when the A/T selector lever is in other
than “D” and “M” position. Symptom 4
ACS-70
Display/Chime ICC system display does not appear.
Check combination meter. Refer to
DI-16, "Trouble Diagnosis" .
Chime does not function. Symptom 5
ACS-70
Control Driving force is hunting. Symptom 6
ACS-71
Function to detect
the vehicle ahead System frequently cannot detect the vehicle ahead.
Symptom 7
ACS-71
Distance to detect the vehicle ahead is short. Symptom 7
ACS-71
System misidentifies a vehicle even though there is no vehi-
cle ahead.

Refer to ACS-14, "LASER BEAM AIMING
ADJUSTMENT" .

Refer to ACS-11, "ICC System Running Test"
.
System misidentifies a vehicle in the next lane.

Refer to ACS-14, "LASER BEAM AIMING
ADJUSTMENT" .

Refer to ACS-11, "ICC System Running Test"
.
System does not detect a vehicle at all. Symptom 8
ACS-72

INDEX FOR DTC AT-5
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M A
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AT
Revision: 2006 July 2007 FX35/FX45
INDEX FOR DTCPFP:00024
Alphabetical Index NCS001AL
NOTE:
If “DTC U1000” is displayed with other DTCs, first perform the trouble diagnosis for “DTC U1000 CAN
COMMUNICATION”. Refer to AT- 1 0 4 , "
DTC U1000 CAN COMMUNICATION LINE" .
*1: These numbers are prescribed by SAE J2012.
*2: These malfunctions cannot be displayed MIL if another malfunction is assigned to MIL. 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 — P1731 AT- 1 4 4
ATF PRES SW 1/CIRC — P1841AT- 1 7 1
ATF PRES SW 3/CIRC — P1843AT- 1 7 3
ATF PRES SW 5/CIRC — P1845AT- 1 7 5
ATF PRES SW 6/CIRC — P1846AT- 1 7 7
A/T INTERLOCK P1730 P1730AT- 1 4 1
A/T TCC S/V FNCTN
P0744(*2)P0744 AT- 1 2 7
ATF TEMP SEN/CIRC P0710 P1710 AT- 1 3 4
CAN COMM CIRCUIT U1000 U1000AT- 1 0 4
D/C SOLENOID/CIRC P1762 P1762AT- 1 5 4
D/C SOLENOID FNCTN
P1764(*2)P1764 AT- 1 5 6
ENGINE SPEED SIG — P0725 AT- 1 2 3
FR/B SOLENOID/CIRC P1757 P1757AT- 1 5 0
FR/B SOLENOID FNCT
P1759(*2)P1759 AT- 1 5 2
HLR/C SOL/CIRC P1767 P1767 AT- 1 5 8
HLR/C SOL FNCTN
P1769(*2) P1769
AT- 1 6 0
I/C SOLENOID/CIRC P1752 P1752 AT- 1 4 6
I/C SOLENOID FNCTN
P1754(*2)P1754 AT- 1 4 8
L/PRESS SOL/CIRC P0745 P0745 AT- 1 2 9
LC/B SOLENOID/CIRC P1772 P1772AT- 1 6 2
LC/B SOLENOID FNCT
P1774(*2)P1774 AT- 1 6 4
MANU MODE SW/CIRC — P1815 AT- 1 6 6
PNP SW/CIRC P0705 P0705 AT- 11 2
STARTER RELAY/CIRC — P0615AT- 1 0 7
TCC SOLENOID/CIRC P0740 P0740AT- 1 2 5
TCM P0700 P0700 AT- 111
TP SEN/CIRC A/T — P1705AT- 1 3 1
TURBINE REV S/CIRC P0717 P0717 AT- 11 6
VEH SPD SE/CIR-MTR — P1721AT- 1 3 9
VEH SPD SEN/CIR AT P0720 P0720 AT- 11 8

AT-6
INDEX FOR DTC
Revision: 2006 July 2007 FX35/FX45
DTC No. Index NCS001AM
NOTE:
If “DTC U1000” is displayed with other DTCs, first perform the trouble diagnosis for “DTC U1000 CAN
COMMUNICATION”. Refer to AT- 1 0 4 , "
DTC U1000 CAN COMMUNICATION LINE" .
*1: These numbers are prescribed by SAE J2012.
*2: These malfunctions cannot be displayed MIL if another malfunction is assigned to MIL. DTC
Items
(CONSULT-II screen terms) Reference page
OBD-II Except OBD-II
CONSULT-II GST
(*1)CONSULT-II only “A/T”
— P0615 STARTER RELAY/CIRC AT- 1 0 7
P0700 P0700 TCM AT- 111
P0705 P0705 PNP SW/CIRCAT- 11 2
P0710 P1710 ATF TEMP SEN/CIRCAT- 1 3 4
P0717 P0717 TURBINE REV S/CIRC AT- 11 6
P0720 P0720 VEH SPD SEN/CIR ATAT- 11 8
— P0725 ENGINE SPEED SIGAT- 1 2 3
P0740 P0740 TCC SOLENOID/CIRC AT- 1 2 5
P0744(*2)P0744 A/T TCC S/V FNCTNAT- 1 2 7
P0745 P0745 L/PRESS SOL/CIRC AT- 1 2 9
— P1705 TP SEN/CIRC A/TAT- 1 3 1
— P1721 VEH SPD SE/CIR-MTRAT- 1 3 9
P1730 P1730 A/T INTERLOCK AT- 1 4 1
— P1731 A/T 1ST E/BRAKINGAT- 1 4 4
P1752 P1752 I/C SOLENOID/CIRC AT- 1 4 6
P1754(*2)P1754 I/C SOLENOID FNCTNAT- 1 4 8
P1757 P1757 FR/B SOLENOID/CIRC AT- 1 5 0
P1759(*2)P1759 FR/B SOLENOID FNCTAT- 1 5 2
P1762 P1762 D/C SOLENOID/CIRC AT- 1 5 4
P1764(*2)P1764 D/C SOLENOID FNCTNAT- 1 5 6
P1767 P1767 HLR/C SOL/CIRC AT- 1 5 8
P1769(*2)P1769 HLR/C SOL FNCTNAT- 1 6 0
P1772 P1772 LC/B SOLENOID/CIRC AT- 1 6 2
P1774(*2)P1774 LC/B SOLENOID FNCTAT- 1 6 4
— P1815 MANU MODE SW/CIRC AT- 1 6 6
— P1841 ATF PRES SW 1/CIRCAT- 1 7 1
— P1843 ATF PRES SW 3/CIRCAT- 1 7 3
— P1845 ATF PRES SW 5/CIRCAT- 1 7 5
— P1846 ATF PRES SW 6/CIRCAT- 1 7 7
U1000 U1000 CAN COMM CIRCUIT AT- 1 0 4

AT-40
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Revision: 2006 July 2007 FX35/FX45
ON BOARD DIAGNOSTIC (OBD) SYSTEMPFP:00028
IntroductionNCS001B7
The A/T system has two self-diagnostic systems.
The first is the emission-related on board diagnostic system (OBD-II) performed by the TCM in combination
with the ECM. The malfunction is indicated by the MIL (malfunction indicator lamp) and is stored as a DTC in
the ECM memory but not the TCM memory.
The second is the TCM original self-diagnosis indicated by the A/T CHECK indicator lamp. The malfunction is
stored in the TCM memory. The detected items are overlapped with OBD-II self-diagnostic items. For detail,
refer to AT- 9 2 , "
Display Items List" .
OBD-II Function for A/T SystemNCS001B8
The ECM provides emission-related on board diagnostic (OBD-II) functions for the A/T system. One function
is to receive a signal from the TCM used with OBD-related parts of the A/T system. The signal is sent to the
ECM when a malfunction occurs in the corresponding OBD-related part. The other function is to indicate a
diagnostic result by means of the MIL (malfunction indicator lamp) on the instrument panel. Sensors, switches
and solenoid valves are used as sensing elements.
The MIL automatically illuminates in “One or Two Trip Detection Logic” when a malfunction is sensed in rela-
tion to A/T system parts.
One or Two Trip Detection Logic of OBD-IINCS001B9
ONE TRIP DETECTION LOGIC
If a malfunction is sensed during the first test drive, the MIL will illuminate and the malfunction will be stored in
the ECM memory as a DTC. The TCM is not provided with such a memory function.
TWO TRIP DETECTION LOGIC
When a malfunction is sensed during the first test drive, it is stored in the ECM memory as a 1st trip DTC
(diagnostic trouble code) or 1st trip freeze frame data. At this point, the MIL will not illuminate. — 1st trip
If the same malfunction as that experienced during the first test drive is sensed during the second test drive,
the MIL will illuminate. — 2nd trip
The “Trip” in the “One or Two Trip Detection Logic” means a driving mode in which self-diagnosis is performed
during vehicle operation.
OBD-II Diagnostic Trouble Code (DTC)NCS001BA
HOW TO READ DTC AND 1ST TRIP DTC
DTC and 1st trip DTC can be read by the following methods.
( with CONSULT-II or GST) CONSULT-II or GST (Generic Scan Tool) Examples: P0705, P0720 etc.
These DTC are prescribed by SAE J2012.
(CONSULT-II also displays the malfunctioning component or system.)

1st trip DTC No. is the same as DTC No.

Output of the diagnostic trouble code indicates that the indicated circuit has a malfunction. How-
ever, in case of the Mode II and GST, they do not indicate whether the malfunction is still occurring
or occurred in the past and returned to normal.
CONSULT-II can identify them as shown below, therefore, CONSULT-II (if available) is recom-
mended.
A sample of CONSULT-II display for DTC and 1st trip DTC is shown
on the next page. DTC or 1st trip DTC of a malfunction is displayed
in SELF-DIAGNOSTIC RESULTS mode for “ENGINE” with CON-
SULT-II. Time data indicates how many times the vehicle was driven
after the last detection of a DTC.
BCIA0030E

AT-54
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
8. Cool down the ATF.
CAUTION:
Run the engine at idle for at least 1 minute.
9. Repeat steps 5 through 8 with selector lever in “R” position.
Judgement of Stall Test
O: Stall speed within standard value position
H: Stall speed higher than standard value
L: Stall speed lower than standard value
Stall test standard value position
LINE PRESSURE TEST
Line Pressure Test Port
Line Pressure Test Procedure
1. Inspect the amount of engine oil and replenish if necessary.
2. Drive the car for about 10 minutes to warm it up so that the ATF reaches in range of 50 to 80 °C (122 to
176 °F), then inspect the amount of ATF and replenish if necessary.
NOTE:
The A/T fluid temperature rises in range of 50 to 80 °C (122 to 176 °F) during 10 minutes of driving.
3. Remove the front propeller shaft from vehicle (with AWD models). Refer to PR-5, "
Removal and Installa-
tion" .
Selector lever position
Expected problem location
“D”, “M” “R”
Stall speed HO

Forward brake

Forward one-way clutch

1st one-way clutch

3rd one-way clutch
OH

Reverse brake
LL

Engine and torque converter one-way clutch
HH

Line pressure low
Does not shift-up “D” or “M” position 1 → 2 Slipping in 2nd, 3rd or 4th gear Direct clutch slippage
Does not shift-up “D” or “M” position 2 → 3 Slipping in 3rd, 4th or 5th gear High and low reverse clutch slippage
Does not shift-up “D” or “M” position 3 → 4 Slipping in 4th or 5th gear Input clutch slippage
Does not shift-up “D” or “M” position 4 → 5 Slipping in 5th gear Front brake slippage
SCIA2187E

AT-64
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
Symptom ChartNCS001BP

The diagnostics item numbers show the sequence for inspection. Check in order from item 1.

Overhaul and check inside the A/T only if A/T fluid condition is NG. Refer to AT- 5 3 , "A/T Fluid Condition
Check" .
No. Items Symptom Condition Diagnostic Item Reference
page
1 Shift
Shock Large shock. (“N”
→
“D” position)
Refer to AT-193,
"Large Shock (“N” to
“D” Position)" . ON vehicle 1. Engine idle speed
EC-81
(for
VQ35DE)
or EC-743

(for
VK45DE)
2. Engine speed signal AT- 1 2 3
3. Accelerator pedal position sensorAT- 1 3 1
4. A/T positionAT- 2 3 1
5. A/T fluid temperature sensorAT- 1 3 4
6. ATF pressure switch 1 and front brake solenoid valve AT- 1 7 1,
AT- 1 5 0
7. CAN communication line AT- 1 0 4
8. A/T fluid level and state AT- 5 3
9. Line pressure testAT- 5 4
10. Control valve with TCMAT- 2 3 9
OFF vehicle 11. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to AT-18, "Cross-sectional View (2WD Models)" , AT-19, "Cross-sec-
tional View (VQ35DE Models for AWD)" or AT- 2 0 , "Cross-
sectional View (VK45DE Models for AWD)" ) AT- 2 9 4
2
Shock is too large
when changing D1 →
D
2 or M1 → M2 . ON vehicle 1. Accelerator pedal position sensor
AT- 1 3 1
2. A/T positionAT- 2 3 1
3. ATF pressure switch 5 and direct clutch solenoid valve AT- 1 7 5,
AT- 1 5 4
4. CAN communication line AT- 1 0 4
5. Engine speed signalAT- 1 2 3
6. Turbine revolution sensor AT- 11 6
7. Vehicle speed sensor A/T and vehicle speed sensor MTR AT- 11 8,
AT- 1 3 9
8. A/T fluid level and state AT- 5 3
9. Control valve with TCMAT- 2 3 9
OFF vehicle 10. Direct clutch AT- 3 3 2

TROUBLE DIAGNOSIS AT-65
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AT
Revision: 2006 July 2007 FX35/FX45
3
Shift
Shock Shock is too large
when changing D2 →
D
3 or M2 → M3 . ON vehicle 1. Accelerator pedal position sensor
AT-131
2. A/T positionAT-231
3. ATF pressure switch 6, high and low reverse clutch sole-
noid valve AT-177,
AT-158
4. CAN communication line AT-104
5. Engine speed signalAT-123
6. Turbine revolution sensor AT- 11 6
7. Vehicle speed sensor A/T and vehicle speed sensor MTR AT- 11 8,
AT-139
8. A/T fluid level and state AT- 5 3
9. Control valve with TCMAT-239
OFF vehicle 10. High and low reverse clutch AT-329
4 Shock is too large
when changing D3 →
D
4 or M3 → M4 . ON vehicle 1. Accelerator pedal position sensor
AT-131
2. A/T positionAT-231
3. ATF pressure switch 3 and input clutch solenoid valve AT-173,
AT-146
4. CAN communication line AT-104
5. Engine speed signalAT-123
6. Turbine revolution sensor AT- 11 6
7. Vehicle speed sensor A/T and vehicle speed sensor MTR AT- 11 8,
AT-139
8. A/T fluid level and state AT- 5 3
9. Control valve with TCMAT-239
OFF vehicle 10. Input clutch AT-317
5 Shock is too large
when changing D4 →
D
5 or M4 → M5 . ON vehicle 1. Accelerator pedal position sensor
AT-131
2. A/T positionAT-231
3. ATF pressure switch 1 and front brake solenoid valve AT-171,
AT-150

4. CAN communication line AT-104
5. Engine speed signalAT-123
6. Turbine revolution sensor AT- 11 6
7. Vehicle speed sensor A/T and vehicle speed sensor MTR AT- 11 8,
AT-139
8. A/T fluid level and state AT- 5 3
9. Control valve with TCMAT-239
OFF vehicle 10. Front brake (brake band)
AT-27411. Input clutchAT-317
No. Items Symptom Condition Diagnostic Item Reference
page