relay INFINITI FX35 2008 User Guide

ACS-50
< SERVICE INFORMATION >[ICC]
TROUBLE DIAGNOSIS FOR
SELF-DIAGNOSTIC ITEMS
2. Disconnect ICC unit.
3. Check continuity between ICC unit harness connector and ICC
brake hold relay harness connector.
4. Check continuity between ICC unit harness connector and ground.
OK or NG
OK >> GO TO 18.
NG >> 1. Repair harness between ICC unit and ICC brake hold relay. 2. Erase DTC and perform ICC system running test. Then, perform self-diagnosis of ICC system
again.
18.CHECK ICC BRAKE HOLD RELAY
1. Connect ICC unit connector and ICC brake hold relay.
2. Disconnect stop lamp switch connector.
3. Perform “Active Test” (“STOP LAMP”) with CONSULT-II I, and make sure that stop lamp is illuminated.
OK or NG
OK >> GO TO 19.
NG >> 1. Replace ICC brake hold relay. 2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
19.CHECK ICC UNIT STANDARD VOLTAGE
1. Connect stop lamp switch connector.
2. Perform “Active Test” (“STOP LAMP”: “STP LMP DRIVE ON”) with CONSULT-III, check voltage between ICC unit harness
connector and ground.
OK or NG
OK >> 1. Replace ICC unit. 2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
NG >> 1. Replace stop lamp switch.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
DTC 92 ECM CIRCUITINFOID:0000000001328839
1.PERFORM SELF-DIAGNOSIS OF ICC SYSTEM
1. Perform self-diagnosis of ICC system.
2. Check if “DTC 20 CAN COMM CIRCUIT” other than “D TC 92 ECM CIRCUIT” is indicated in self-diagnosis
item in the display.
ICC unit
connector Te r m i n a l
ICC brake hold
relay connector Terminal Continuity
M89 38 E14 7 Yes
SKIA6663E
ICC unit
connector Te r m i n a l
GroundContinuity
M89 38 No
ICC unit
connector Te r m i n a l
ConditionVoltage (Ap-
prox.)
(+) ( −)
M89 29 Ground During “Active Test” 0 V
SKIA1200E
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ACS-64
< SERVICE INFORMATION >[ICC]
ELECTRICAL COMPONENT INSPECTION
ICC Brake Switch and Stop Lamp Switch
INFOID:0000000001328860
Check each switch after adjusting brake pedal, refer to BR-5.
ICC Brake Hold RelayINFOID:0000000001328861
Disconnect ICC brake hold relay, and check continuity between ter-
minals.
ConditionContinuity
ICC brake switch Stop lamp switch
When brake pedal is depressed No Yes
When brake pedal is released Yes No
SKIA5984E
Terminals Condition Continuity
34 Applying battery voltage to be-
tween terminals 1 and 2. No
67 Yes
34 No battery voltage Ye s
67 No
PKIC4924E
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INDEX FOR DTCAT-5
< SERVICE INFORMATION >
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SERVICE INFORMATION
INDEX FOR DTC
Alphabetical IndexINFOID:0000000001327120
NOTE:
If “DTC U1000” is displayed with other DTCs, fi rst perform the trouble diagnosis for “DTC U1000 CAN
COMMUNICATION”. Refer to AT- 9 4
.
*1: These numbers are prescribed by SAE J2012.
*2: These malfunctions cannot be displayed MIL if another malfunction is assigned to MIL.
DTC No. IndexINFOID:0000000001327121
NOTE:
If “DTC U1000” is displayed with other DTCs, fi rst perform the trouble diagnosis for “DTC U1000 CAN
COMMUNICATION”. Refer to AT- 9 4
.
Items
(CONSULT-III screen terms) DTC
Reference page
OBD-II Except OBD-II
CONSULT-III GST
(*1) CONSULT-III only “TRANS- MISSION”
A/T 1ST E/BRAKING — P1731 AT- 1 4 1
ATF 1ST GR FNCTN P0731 P0731 AT- 11 4
ATF 2ND GR FNCTN P0732 P0732AT- 11 6
ATF 3RD GR FNCTN P0733 P0733AT- 11 8
ATF 4TH GR FNCTN P0734 P0734AT- 1 2 0
ATF 5TH GR FNCTN P0735 P0735AT- 1 2 2
A/T INTERLOCK P1730 P1730AT- 1 3 9
A/T TCC S/V FNCTN
P0744(*2)P0744AT- 1 2 6
ATF TEMP SEN/CIRC P0710 P1710 AT- 1 3 2
CAN COMM CIRCUIT U1000 U1000 AT- 9 4
D/C SOLENOID/CIRC P1762 P1762AT- 1 4 7
ENGINE SPEED SIG P0725 P0725 AT- 11 2
FR/B SOLENOID/CIRC P1757 P1757AT- 1 4 5
HLR/C SOL/CIRC P1767 P1767AT- 1 4 9
I/C SOLENOID/CIRC P1752 P1752AT- 1 4 3
L/PRESS SOL/CIRC P0745 P0745AT- 1 2 8
LC/B SOLENOID/CIRC P1772 P1772AT- 1 5 1
LC/B SOLENOID FNCT
P1774(*2)P1774AT- 1 5 3
MANU MODE SW/CIRC — P1815 AT- 1 5 5
PNP SW/CIRC P0705 P0705AT- 1 0 2
STARTER RELAY/CIRC — P0615 AT- 9 7
TCC SOLENOID/CIRC P0740 P0740AT- 1 2 4
TCM P0700 P0700AT- 1 0 1
TP SEN/CIRC A/T P1705 P1705AT- 1 3 0
TURBINE REV S/CIRC P0717 P0717AT- 1 0 6
VEH SPD SE/CIR-MTR — P1721AT- 1 3 7
VEH SPD SEN/CIR AT P0720 P0720AT- 1 0 8
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AT-6
< SERVICE INFORMATION >
INDEX FOR DTC
*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-III screen terms) Reference page
OBD-II Except OBD-II
CONSULT-III GST
(*1)
C O N S U LT- I I I
only “TRANSMIS- SION”
— P0615 STARTER RELAY/CIRC AT- 9 7
P0700 P0700 TCM AT- 1 0 1
P0705 P0705 PNP SW/CIRCAT- 1 0 2
P0710 P1710 ATF TEMP SEN/CIRCAT- 1 3 2
P0717 P0717 TURBINE REV S/CIRCAT- 1 0 6
P0720 P0720 VEH SPD SEN/CIR ATAT- 1 0 8
P0725 P0725 ENGINE SPEED SIG AT- 11 2
P0731 P0731 A/T 1ST GR FNCTNAT- 11 4
P0732 P0732 A/T 2ND GR FNCTNAT- 11 6
P0733 P0733 A/T 3RD GR FNCTNAT- 11 8
P0734 P0734 A/T 4TH GR FNCTNAT- 1 2 0
P0735 P0735 A/T 5TH GR FNCTNAT- 1 2 2
P0740 P0740 TCC SOLENOID/CIRCAT- 1 2 4
P0744(*2)P0744 A/T TCC S/V FNCTNAT- 1 2 6
P0745 P0745 L/PRESS SOL/CIRC AT- 1 2 8
P1705 P1705 TP SEN/CIRC A/TAT- 1 3 0
— P1721 VEH SPD SE/CIR-MTRAT- 1 3 7
P1730 P1730 A/T INTERLOCK AT- 1 3 9
— P1731 A/T 1ST E/BRAKINGAT- 1 4 1
P1752 P1752 I/C SOLENOID/CIRC AT- 1 4 3
P1757 P1757 FR/B SOLENOID/CIRCAT- 1 4 5
P1762 P1762 D/C SOLENOID/CIRCAT- 1 4 7
P1767 P1767 HLR/C SOL/CIRCAT- 1 4 9
P1772 P1772 LC/B SOLENOID/CIRCAT- 1 5 1
P1774(*2)P1774 LC/B SOLENOID FNCTAT- 1 5 3
— P1815 MANU MODE SW/CIRC AT- 1 5 5
U1000 U1000 CAN COMM CIRCUIT AT- 9 4
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A/T CONTROL SYSTEMAT-29
< SERVICE INFORMATION >
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TCM FunctionINFOID:0000000001327135
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 automatic transmission senses vehicle operating condi tions through various sensors or signals. It always
controls the optimum shift position and reduces shifting and lock-up shocks.
1. Front brake 2. Input clutch 3. Direct clutch
4. High and low reverse clutch 5. Reverse brake 6. Forward brake
7. Low coast brake 8. 1st one-way clutch 9. Forward one-way clutch
10. 3rd one-way clutch 11. Front sun gear 12. Input shaft
13. Mid internal gear 14. Front internal gear 15. Rear carrier
16. Rear sun gear 17. Mid sun gear 18. Front carrier
19. Mid carrier 20. Rear internal gear 21. Output shaft
22. Parking gear 23. Parking pawl
SCIA1519E
SENSORS (or SIGNALS)
⇒TCM
⇒ACTUATORS
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 switch Shift control
Line pressure control
Lock-up control
Engine brake control
Timing control
Fail-safe control
Self-diagnosis
CONSULT-III co
mmunication
line
Duet-EA control
CAN system Input clutch solenoid valve
Direct clutch solenoid valve
Front brake solenoid valve
High and low reverse clutch sole-
noid valve
Low coast brake solenoid valve
Torque converter clutch solenoid
valve
Line pressure solenoid valve
A/T CHECK indicator lamp
Starter relay
Back-up lamp relay
:

A/T CONTROL SYSTEMAT-31
< SERVICE INFORMATION >
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Input/Output Signal of TCMINFOID:0000000001327137
*1: Spare for vehicle speed sensor·A/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 kin d of error.
*5: Input by CAN communications
*6: Output by CAN communications
Line Pressure ControlINFOID:0000000001327138
 When an input torque signal equivalent to the engine drive force is sent from the ECM to the TCM, the TCM
controls the line pressure solenoid.
Control item Line
pressure control Vehicle
speed
control Shift
control Lock-up
control Engine
brake
control Fail-safe
function (*3) Self-diag-
nostics
function
Input Accelerator 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) XXXXX
Engine speed signals
(*5)XXXXXXX
Stop lamp switch signal
(*5)XXX X (*4)
A/T fluid temperature sensors 1, 2 X X X X X X
ASCD or
ICC Operation signal
(*5)XXX
Overdrive cancel sig-
nal
(*5)X
Out-
put Direct clutch solenoid X X X X
Input clutch solenoid X X X X
High and low reverse clutch sole-
noid
XX XX
Front brake solenoid X X X X
Low coast brake solenoid (ATF
pressure switch 2) XX XXX
Line pressure solenoid X X X X X X X
TCC solenoid X X X
Self-diagnostics table
(*6)X
Starter relay XX
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TROUBLE DIAGNOSISAT-41
< SERVICE INFORMATION >
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TROUBLE DIAGNOSIS
DTC Inspection Priority ChartINFOID:0000000001327148
If some DTCs are displayed at the same time, per form inspections one by one based on the following priority
chart.
NOTE:
If “DTC U1000” is displayed with other DTCs, fi rst perform the trouble diagnosis for “DTC U1000 CAN
COMMUNICATION”. Refer to AT- 9 4
.
Fail-SafeINFOID:0000000001327149
The TCM has an electrical fail-safe mode. This mode make s 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 transmission is fixed in 2nd, 4th or 5th
(depending on the breakdown position), so the customer should feel “slipping” or “poor acceleration”.
Even when the electronic circuits are normal, under s pecial conditions (for example, when slamming on the
brake with the wheels spinning drastically and stopping the ti re rotation), the transmission 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, t he customer's vehicle has returned to normal, so handle according to the
“WORK FLOW” (Refer to AT- 4 2
).
FAIL-SAFE FUNCTION
If any malfunction occurs in a sensor or solenoid, th is 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 trans-
mission and from combination meter so normal driving is possible even if there is a malfunction in one of the
systems. And if vehicle speed sens or A/T (revolution sensor) has unus ual 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 according
to a pre-determined accelerator angle to make driving po ssible. 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 according
to a pre-determined accelerator angle to make driving po ssible. 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 indi-
cating 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 t he TCM, the position indicator is switched OFF, the
starter relay is switched OFF (starter starting is di sabled), 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.)
A/T Interlock
 If there is an A/T interlock judgment malfunction, t he A/T is fixed in 2nd gear to make driving possible.
NOTE:
When the vehicle is driven fixed in 2nd gear, a turbine revolution sensor malfunction is displayed,
but this is not a turbine r evolution sensor malfunction.
 When the coupling pattern below is detected, the fail- safe action corresponding to the pattern is performed.
A/T 1st Engine Braking
Priority Detected items (DTC)
1 U1000 CAN communication line
2 Except above
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AT-84
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
Data are reference value and are measured between each terminal and ground.
CONSULT-III Function (TRANSMISSION)INFOID:0000000001327163
CONSULT-III can display each diagnostic item us ing the diagnostic test models shown following.
FUNCTION
CONSULT-III REFERENCE VALUE
NOTICE:
1. The CONSULT-III electrically displays shift timi ng and lock-up timing (that is, operation timing of each
solenoid).
Check for time difference between actual shift timi ng and the CONSULT-III display. If the difference is
noticeable, mechanical parts (except solenoids, sens ors, etc.) may be malfunctioning. Check mechanical
parts using applicable diagnostic procedures.
2. Shift schedule (which implies gear position) display ed on CONSULT-III and that indicated in Service Man-
ual may differ slightly. This occurs because of the following reasons:
- Actual shift schedule has more or less tolerance or allowance,
- Shift schedule indicated in Service Manual refers to the point where shifts start, and
- Gear position displayed on CONSULT-III indicates the point where shifts are completed.
Te r m i n a l Wire
color Item Condition Data (Approx.)
1LG Power supply
(Memory back-up) Always Battery voltage
2LG Power supply
(Memory back-up)
Always Battery voltage
3 L CAN-H – –
4PU K-line (CONSULT-
III signal) The terminal is connected to the data link connector for CONSULT-III. –
5 B Ground – –
6YPower supply – Battery voltage
–0 V
7OR Back-up lamp re-
lay Selector lever in “R” position. 0 V
Selector lever in other positions. Battery voltage
8 P CAN-L – –
9 GY Starter relay Selector lever in “N” and “P
” positions. Battery voltage
Selector lever in other positions. 0 V
10 B Ground – –
Diagnostic test mode Function
Work support This mode enables a technician to adjust some devices faster and more accurately by following the in-
dications on CONSULT-III.
Self-diagnostic results Self-diagnostic results can be read and erased quickly.
Data monitor Input/Output data in the ECU can be read.
CAN diagnostic support mon-
itor The results of transmit/receive diagnosis of CAN communication can be read.
Function test Performed by CONSULT-III instead of a technician to determine whether each system is “OK” or “NG”.
DTC work support Select the operating condition to confirm Diagnosis Trouble Codes.
ECU part number TCM part number can be read.
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TROUBLE DIAGNOSISAT-85
< SERVICE INFORMATION >
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3. Display of solenoid valves on CONSULT-III changes at t he start of shifting, while gear position is displayed
upon completion of shifting (which is computed by TCM).
Item name Condition Display value (Approx.)
ATF TEMP SE 1 0°C (32 °F) − 20 °C (68 °F) − 80 °C (176 °F) 3.3
− 2.7 − 0.9 V
ATF TEMP SE 2 3.3 − 2.5 − 0.7 V
ATF TEMP 1 Ignition switch ON Measured ATF temperature is dis-
played.
TCC SOLENOID Lock-up is active 0.4 − 0.6 A
SLCT LVR POSI Selector lever in “N
” and “P” positions. N/P
Selector lever in “R” position. R
Selector lever in “D” position. D
VHCL/S SE-A/T During driving Approximately matches the speedom-
eter reading.
VEHICLE SPEED During driving Approximately matches the speedom-
eter reading.
ENGINE SPEED Engine running Closely matches the tachometer read-
ing.
LINE PRES SOL During driving 0.2 − 0.6 A
TURBINE REV During driving (lock-up ON) Approximately matches the engine
speed.
VHCL/S SE-MTR During driving Approximately matches the speedom-
eter reading.
ATF PRES SW 2 Low coast brake engaged. Refer to
AT- 1 8
.ON
Low coast brake disengaged. Refer to AT- 1 8
. OFF
I/C SOLENOID Input clutch disengaged. Refer to
AT- 1 8
.0.6 − 0.8 A
Input clutch engaged. Refer to AT- 1 8
.0 − 0.05 A
FR/B SOLENOID Front brake engaged. Refer to
AT- 1 8
.0.6 − 0.8 A
Front brake disengaged. Refer to AT- 1 8
. 0 − 0.05 A
D/C SOLENOID Direct clutch disengaged. Refer to
AT- 1 8
.0.6 − 0.8 A
Direct clutch engaged. Refer to AT- 1 8
.0 − 0.05 A
HLR/C SOL High and low reverse clutch disengaged. Refer to
AT- 1 8
.0.6 − 0.8 A
High and low reverse clutch engaged. Refer to AT- 1 8
.0 − 0.05 A
ON OFF SOL Low coast brake engaged. Refer to
AT- 1 8
.ON
Low coast brake disengaged. Refer to AT- 1 8
.OFF
MANU MODE SW Manual shift gate position (neutral) ON
Other than the above OFF
NON M-MODE SW Manual shift gate position OFF
Other than the above ON
UP SW LEVER Selector lever: + side ON
Other than the above OFF
DOWN SW LEVER Selector lever: - side ON
Other than the above OFF
STARTER RELAY Selector lever in “N
” and “P” positions. ON
Selector lever in other positions. OFF
ACCELE POSI Released accelerator pedal. 0.0/8
Fully depressed accelerator pedal. 8.0/8
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AT-86
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
SELF-DIAGNOSTIC RESULT MODE
After performing “SELF-DIAGNOSTIC RESULT MODE”, place check marks for results on the AT-42, "How to
Perform Trouble Diagnosis for Quick and Accurate Repair". Reference pages are provided following the items.
Display Items List
X: Applicable, —: Not applicable
CLSD THL POSReleased accelerator pedal. ON
Fully depressed accelerator pedal. OFF
W/O THL POS Fully depressed accelerator pedal. ON
Released accelerator pedal. OFF
BRAKE SW Depressed brake pedal. ON.
Released brake pedal. OFF
GEAR During driving. 1,2,3,4,5, Item name Condition Display value (Approx.)
Items (CONSULT-
III screen terms) Malfunction is detected when... TCM self-di-
agnosis OBD-II
(DTC)
Reference page
“TRANS-
MISSION”
with CON- SULT-III MIL indica-
tor lamp(*1),
“ENGINE”
with CON-
SULT-III or GST
CAN COMM CIR-
CUIT When TCM is not transmitting or receiving CAN communication sig-
nal for 2 seconds or more.
U1000 U1000
AT- 9 4
STARTER RELAY/
CIRCIf 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 mal-
function.)
P0615 —
AT- 9 7
TCM TCM is malfunctioning. P0700 P0700 AT- 1 0 1
PNP SW/CIRC PNP switch 1-4 signals input with impossible pattern.
 “P” position is detected from “N” position without any other posi-
tion being detected in between. P0705 P0705
AT- 1 0 2
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 P0717
AT- 1 0 6
VEH SPD SEN/CIR
AT  Signal from vehicle speed sensor A/T (Revolution sensor) not in-
put 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 P0720
AT- 1 0 8
ENGINE SPEED
SIGTCM does not receive the CAN communication signal from the
ECM.
P0725 P0725
AT- 11 2
A/T 1ST GR
FNCTNA/T cannot shift to 1st gear. P0731 P0731
AT- 11 4
A/T 2ND GR
FNCTNA/T cannot shift to 2nd gear. P0732 P0732
AT- 11 6
A/T 3RD GR
FNCTNA/T cannot shift to 3rd gear. P0733 P0733
AT- 11 8
A/T 4TH GR
FNCTNA/T cannot shift to 4th gear. P0734 P0734
AT- 1 2 0
A/T 5TH GR
FNCTNA/T cannot shift to 5th gear. P0735 P0735
AT- 1 2 2
TCC SOLENOID/
CIRCNormal voltage not applied to solenoid due to cut line, short, or the
like.
P0740 P0740
AT- 1 2 4
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