check engine INFINITI FX35 2005 Owner's Manual

TROUBLE DIAGNOSIS AT-57
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Check at IdleACS002M0
1. CHECK STARTING THE ENGINE
1. Park vehicle on level surface.
2. Move selector lever to “P” or “N” position.
3. Turn ignition switch OFF.
4. Start engine.
Does the engine start?
YES >> GO TO 2.
NO >> Stop the road test and go to AT- 1 9 4 , "
Engine Cannot Be Started in “P” or “N” Position" .
2. CHECK STARTING THE ENGINE
1. Turn ignition switch to ON.
2. Move selector lever in “D”, “M” or “R” position.
3. Start engine.
Does the engine start in each position?
YES >> Stop the road test and go to AT- 1 9 4 , "Engine Cannot Be Started in “P” or “N” Position" .
NO >> GO TO 3.
3. CHECK “P” POSITION FUNCTIONS
1. Move selector lever to “P” position.
2. Turn ignition switch OFF.
3. Disengage the parking brake.
4. Push the vehicle forward or backward.
5. Engage the parking brake.
When you push the vehicle with disengaging the parking brake, does it move?
YES >> Enter a check mark at “In “P” Position Vehicle Moves When Pushed” on the AT- 4 7 , "DIAGNOSTIC
WORKSHEET" , then continue the road test.
NO >> GO TO 4.
4. CHECK “N” POSITION FUNCTIONS
1. Start engine.
2. Move selector lever to “N” position.
3. Disengage the parking brake.
Does vehicle move forward or backward?
YES >> Enter a check mark at “In “N” Position Vehicle Moves” on the AT- 4 7 , "DIAGNOSTIC WORK-
SHEET" , then continue the road test.
NO >> GO TO 5.
5. CHECK SHIFT SHOCK
1. Engage the brake.
2. Move selector lever to “D” position.
When the transmission is shifted from
“N” to “D”, is there an excessive shock?
YES >> Enter a check mark at “Large Shock (“N” to “D” Position)” on the AT- 4 7 , "DIAGNOSTIC WORK-
SHEET" , then continue the road test.
NO >> GO TO 6.

AT-58
TROUBLE DIAGNOSIS
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6. CHECK “R” POSITION FUNCTIONS
1. Engage the brake.
2. Move selector lever to “R” position.
3. Disengage the brake for 4 to 5 seconds.
Does the vehicle creep backward?
YES >> GO TO 7.
NO >> Enter a check mark at “Vehicle Does Not Creep Backward In “R” Position” on the AT- 4 7 , "
DIAG-
NOSTIC WORKSHEET" , then continue the road test.
7. CHECK “D” POSITION FUNCTIONS
Inspect whether the vehicle creep forward when the transmission is put into the “D” position.
Does the vehicle creep forward in the
“D” position?
YES >> Go to AT- 5 8 , "Cruise Test - Part 1" , AT- 6 0 , "Cruise Test - Part 2" , and AT- 6 1 , "Cruise Test - Part
3" .
NO >> Enter a check mark at “Vehicle Does Not Creep Forward In “D” Position” on the AT- 4 7 , "
DIAG-
NOSTIC WORKSHEET" , then continue the road test.
Cruise Test - Part 1ACS002M1
1. CHECK STARTING OUT FROM D1
1. Drive the vehicle for about 10 minutes to warm up the engine oil and ATF. Appropriate temperature for the ATF: 50 to 80 °C (122 to 176 °F)
2. Park the vehicle on a level surface.
3. Move selector lever to “P” position.
4. Start the engine.
5. Move selector lever to “D” position.
6. Press the accelerator pedal about half way down to accelerate the vehicle.
With CONSULT-II
Read the gear positions. Refer to AT- 9 6 , "
DATA MONITOR MODE" .
Starts from D1?
YES >> GO TO 2.
NO >> Enter a check mark at “Vehicle Cannot Be Started From D1” on the AT- 4 7 , "
DIAGNOSTIC WORK-
SHEET" , then continue the road test.
2. CHECK SHIFT-UP D1 → D2
Press down the accelerator pedal about half-way and inspect if the vehicle shifts up (D1 → D2) at the appro-
priate speed.

Refer to AT- 6 2 , "Vehicle Speed at Which Gear Shifting Occurs" .
With CONSULT-II
Read the gear position, throttle degree of opening, and vehicle speed. Refer to AT- 9 6 , "
DATA MONITOR
MODE" .
Does the A/T shift-up D1
→ D2 at the correct speed?
YES >> GO TO 3.
NO >> Enter a check mark at “A/T Does Not Shift: D1 → D2” on the AT- 4 7 , "
DIAGNOSTIC WORK-
SHEET" , then continue the road test.

AT-60
TROUBLE DIAGNOSIS
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7. CHECK LOCK-UP HOLD
Check hold lock-up. With CONSULT-II
Select “TCC SOLENOID” with the “MAIN SIGNAL” mode for “A/T”. Refer to AT- 9 0 , "
CONSULT-II REFER-
ENCE VALUE" .
Does it maintain lock-up status?
YES >> GO TO 8.
NO >> Enter a check mark at “A/T Does Not Hold lock-up Condition” on the AT- 4 7 , "
DIAGNOSTIC
WORKSHEET" , then continue the road test.
8. CHECK LOCK-UP RELEASE
Check lock-up cancellation by depressing brake pedal lightly to decelerate. With CONSULT-II
Select “TCC SOLENOID” with the “MAIN SIGNAL” mode for A/T. Refer to AT- 9 0 , "
CONSULT-II REFERENCE
VA L U E" .
Does lock-up cancel?
YES >> GO TO 9.
NO >> Enter a check mark at “Lock-up Is Not Released” on the AT- 4 7 , "
DIAGNOSTIC WORKSHEET" ,
then continue the road test.
9. CHECK SHIFT-DOWN D5 → D4
Decelerate by pressing lightly on the brake pedal. With CONSULT-II
Read the gear position and engine speed. Refer to AT- 9 6 , "
DATA MONITOR MODE" .
When the A/T shift-down D5
→ D4, does the engine speed drop smoothly back to idle?
YES >> 1. Stop the vehicle. 2. Go to AT- 6 0 , "
Cruise Test - Part 2" .
NO >> Enter a check mark at “Engine Speed Does Not Return to Idle” on the AT- 4 7 , "
DIAGNOSTIC
WORKSHEET" , then continue the road test. Go to AT- 6 0 , "Cruise Test - Part 2" .
Cruise Test - Part 2ACS002M2
1. CHECK STARTING FROM D1
1. Move selector lever into “D” position.
2. Accelerate at half throttle.
With CONSULT-II
Read the gear position. Refer to AT- 9 6 , "
DATA MONITOR MODE" .
Does it start from D1?
YES >> GO TO 2.
NO >> Enter a check mark at “Vehicle Cannot Be Started from D1” on the AT- 4 7 , "
DIAGNOSTIC WORK-
SHEET" , then continue the road test.

TROUBLE DIAGNOSIS AT-61
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2. CHECK SHIFT-UP D1 → D2
Press the accelerator pedal down all the way and check whether or not the transmission shifts up (D1 → D2)
at the correct speed.

Refer to AT- 6 2 , "Vehicle Speed at Which Gear Shifting Occurs" .
With CONSULT-II
Read the gear position, throttle position and vehicle speed. Refer to AT- 9 6 , "
DATA MONITOR MODE" .
Does the A/T shift-up D1
→ D2 at the correct speed?
YES >> GO TO 3.
NO >> Enter a check mark at “A/T Does Not Shift: D1 → D2” on the AT- 4 7 , "
DIAGNOSTIC WORK-
SHEET" , then continue the road test.
3. CHECK SHIFT-UP D2 → D3
Press the accelerator pedal down all the way and check whether or not the transmission shifts up (D2 → D3)
at the correct speed.

Refer to AT- 6 2 , "Vehicle Speed at Which Gear Shifting Occurs" .
With CONSULT-II
Read the gear position, throttle position and vehicle speed. Refer to AT- 9 6 , "
DATA MONITOR MODE" .
Does the A/T shift-up D2
→ D3 at the correct speed?
YES >> GO TO 4.
NO >> Enter a check mark at “A/T Does Not Shift: D2 → D3” on the AT- 4 7 , "
DIAGNOSTIC WORK-
SHEET" , then continue the road test.
4. CHECK SHIFT-UP D3 → D4 AND ENGINE BRAKE
When the transmission changes speed D3 → D4, return the accelerator pedal.
With CONSULT-II
Read the gear position. Refer to AT- 9 6 , "
DATA MONITOR MODE" .
Does the A/T shift-up D3
→ D4 and apply the engine brake?
YES >> 1. Stop the vehicle.
2. Go to AT- 6 1 , "
Cruise Test - Part 3" .
NO >> Enter a check mark at “A/T Does Not Shift: D3 → D4” on the AT- 4 7 , "
DIAGNOSTIC WORK-
SHEET" , then continue the road test. Go to AT- 6 1 , "Cruise Test - Part 3" .
Cruise Test - Part 3ACS002M3
1. MANUAL MODE FUNCTION
Move to manual mode from “D” position.
Does it switch to manual mode?
YES >> GO TO 2.
NO >> Continue road test and add check mark to “Cannot Be Changed To Manual Mode” on the AT- 4 7 ,
"DIAGNOSTIC WORKSHEET" .
2. CHECK SHIFT-DOWN
During manual mode driving, is downshift from M5 → M4 → M3 → M2 → M1 performed?
With CONSULT-II
Read the gear position. Refer to AT- 9 6 , "
DATA MONITOR MODE" .
Is downshifting correctly performed?
YES >> GO TO 2.
NO >> Enter a check mark at “Vehicle Does Not Shift” at the corresponding position (5th → 4th, 4th →
3rd, 3rd → 2nd, 2nd → 1st) on the AT- 4 7 , "
DIAGNOSTIC WORKSHEET" , then continue the road
test.

AT-62
TROUBLE DIAGNOSIS
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3. CHECK ENGINE BRAKE
Check engine brake.
Does engine braking effectively reduce speed in M1 position?
YES >> 1. Stop the vehicle. 2. Perform self-diagnostics. Refer to AT- 9 3 , "
SELF-DIAGNOSTIC RESULT MODE" , AT- 1 0 3 ,
"Diagnostic Procedure without CONSULT-II" .
NO >> Enter a check mark at “Vehicle Does Not Decelerate By Engine Brake” on the AT- 4 7 , "
DIAGNOS-
TIC WORKSHEET" , then continue trouble diagnosis.
Vehicle Speed at Which Gear Shifting OccursACS002M4
2WD MODELS

At half throttle, the accelerator opening is 4/8 of the full opening.
AW D M OD E LS

At half throttle, the accelerator opening is 4/8 of the full opening.

At half throttle, the accelerator opening is 4/8 of the full opening.
Engine model VQ35DE
Throttle position Vehicle speed km/h (MPH)
D
1 → D2D2 → D3D3 → D4D4 → D5D5 → D4D4 → D3D3 → D2D2 → D1
Full throttle 66 - 74
(41 - 46) 106 - 114
(66 - 71) 165 - 173
(103 - 108) 236 - 244
(147 - 152) 232 - 240
(144 - 149) 145- 153
(90 - 95) 89 - 97
(55 - 60) 41 - 49
(25 - 30)
Half throttle 52 - 60
(32 - 37) 83 - 91
(52 - 57) 127 - 135
(79 - 84) 159 - 167
(99 - 104) 104 - 112
(65 - 70) 75 - 83
(47 - 52) 34 - 42
(21 - 26) 9 - 17
(6 - 11)
Engine model VQ35DE
Throttle position Vehicle speed km/h (MPH)
D
1 → D2D2 → D3D3 → D4D4 → D5D5 → D4D4 → D3D3 → D2D2 → D1
Full throttle 60 - 68
(37 - 42) 96 - 104
(60 - 65) 150 - 158
(93 - 98) 214 - 222
(133 - 138) 210 - 218
(130 - 135) 132 - 140
(82 - 87) 81 - 89
(50 - 55) 37 - 45
(23 - 28)
Half throttle 47 - 55
(29 - 34) 75 - 83
(47 - 52) 115 - 123
(71 - 76) 144 - 152
(89 - 94) 95 - 103
(59 - 64) 68 - 76
(42 - 47) 31 - 39
(19 - 24) 9 - 17
(6 -11)
Engine model VK45DE
Throttle position Vehicle speed km/h (MPH)
D
1 → D2D2 → D3D3 → D4D4 → D5D5 → D4D4 → D3D3 → D2D2 → D1
Full throttle 62 - 70
(39 - 43) 98 - 106
(61 - 66) 153 - 161
(95 - 100) 220 - 228
(137 - 142) 216 - 224
(134 - 139) 137 - 145
(85 - 90) 85 - 93
(53 - 58) 39 - 47
(24 - 29)
Half throttle 29 - 37
(18 - 23) 59 - 67
(37 - 42) 101 - 109
(63 - 68) 161 - 169
(100 - 105) 108 - 116
(67 - 72) 66 - 74
(41 - 46) 38 - 46
(24 - 29) 22 - 30
(14 - 19)

AT-64
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
Symptom ChartACS0080Q

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 2 , "A/T Fluid Condition
Check" .
No. Items Symptom Condition Diagnostic Item Reference
page
1 Shift
Shock Large shock. (“N”
→
“D” position)
Refer to AT-197,
"Large Shock (“N” to
“D” Position)" . ON vehicle 1. Engine idle speed
EC-83
(for
VQ35DE)
or EC-774

(for
VK45DE)
2. Engine speed signal AT- 1 2 3
3. Accelerator pedal position sensorAT- 1 3 3
4. Control linkage adjustmentAT- 2 3 5
5. A/T fluid temperature sensorAT- 1 3 6
6. ATF pressure switch 1 and front brake solenoid valve AT- 1 7 5,
AT- 1 5 4
7. CAN communication line AT- 1 0 6
8. A/T fluid level and state AT- 5 2
9. Line pressure testAT- 5 4
10. Control valve with TCMAT- 2 4 3
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)" or AT- 1 9 , "Cross-
Sectional View (AWD Models)" ) AT- 2 9 0
2
Shock is too large
when changing D1 →
D
2 or M1 → M2 . ON vehicle 1. Accelerator pedal position sensor
AT- 1 3 3
2. Control linkage adjustmentAT- 2 3 5
3. ATF pressure switch 5 and direct clutch solenoid valve AT- 1 7 9,
AT- 1 5 8
4. CAN communication line AT- 1 0 6
5. Engine speed signalAT- 1 2 3
6. Turbine revolution sensorAT- 1 4 1
7. Vehicle speed sensor A/T and vehicle speed sensor MTR AT- 11 8,
AT- 1 4 3
8. A/T fluid level and state AT- 5 2
9. Control valve with TCMAT- 2 4 3
OFF vehicle 10. Direct clutch AT- 3 2 6

AT-90
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
CONSULT-II Function (A/T)ACS002M9
CONSUT-II can display each diagnostic item using the diagnostic test models shown following.
FUNCTION
CONSULT-II REFERENCE VALUE
NOTICE:
1. The CONSULT-II electrically displays shift timing and lock-up timing (that is, operation timing of each sole-
noid).
Check for time difference between actual shift timing and the CONSULT-II display. If the difference is
noticeable, mechanical parts (except solenoids, sensors, etc.) may be malfunctioning. Check mechanical
parts using applicable diagnostic procedures.
2. Shift schedule (which implies gear position) displayed on CONSULT-II 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-II indicates the point where shifts are completed.
3. Display of solenoid valves on CONSULT-II changes at the start of shifting, while gear position is displayed upon completion of shifting (which is computed by TCM).
Diagnostic test mode Function Reference page
Self-diagnostic results Self-diagnostic results can be read and erased quickly. AT- 9 3
Data monitor Input/Output data in the ECU can be read.AT- 9 6
CAN diagnostic support
monitor The results of transmit/receive diagnosis of CAN communication can be read.
AT- 1 0 0
Function test Performed by CONSULT-II 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. AT- 1 0 0
ECU part number ECU part number can be read. —
Item name Condition Display value
(Approx.)
VHCL/S SE·A/T During driving Approximately
matches the speed-
ometer reading.
VHCL/S SE·MTR
ACCELE POSI Released accelerator pedal. 0.0/8
Fully depressed accelerator pedal. 8/8
CLSD THL POS Released 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
ENGINE SPEED Engine running Closely matches the
tachometer reading.
TURBINE REV During driving (lock-up ON) Approximately
matches the engine
speed.
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
TCC SOLENOID When performing slip lock-up 0.2 - 0.4 A
When performing lock-up 0.4 - 0.6 A
LINE PRES SOL During driving 0.2 - 0.6 A

TROUBLE DIAGNOSIS AT-93
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SELF-DIAGNOSTIC RESULT MODE
After performing AT- 9 3 , "SELF-DIAGNOSTIC RESULT MODE" , place check marks for results on the AT- 4 7 ,
"DIAGNOSTIC WORKSHEET" . Reference pages are provided following the items.
Operation Procedure
1. Perform “CONSULT-II SETTING PROCEDURE”. Refer to AT- 9 2 , "CONSULT-II SETTING PROCEDURE"
.
2. Touch “SELF-DIAG RESULTS”. 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-
diagnosis OBD-II
(DTC)
Reference page
“A/T” with
CONSULT- II MIL indica-
tor lamp*1, “ENGINE”
with CON- SULT-II or GST
CAN COMM CIR-
CUIT

When a malfunction is detected in CAN communications U1000 U1000 AT- 1 0 6
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- 1 0 9
TCM
TCM is malfunctioning P0700 P0700*3 AT- 11 3
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- 11 4
VEH SPD SEN/CIR
AT (Revolution
sensor)

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 P0720
AT- 11 8
ENGINE SPEED
SIG
TCM does not receive the CAN communication signal from the
ECM. P0725 P0725*3
AT- 1 2 3
TCC SOLENOID/
CIRC
Normal voltage not applied to solenoid due to cut line, short, or
the like P0740 P0740
AT- 1 2 5
A/T TCC S/V
FNCTN
A/T cannot perform lock-up even if electrical circuit is good.

TCM detects as irregular by comparing difference value with slip
rotation. P0744 P0744*2
AT- 1 2 7
L/PRESS SOL/
CIRC

Normal voltage not applied to solenoid due to cut line, short, or
the like

TCM detects as irregular by comparing target value with monitor
value. P0745 P0745
AT- 1 2 9
TCM·RAM
TCM memory (RAM) is malfunctioning. P1702 — AT- 1 3 1

TROUBLE DIAGNOSIS AT-103
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Diagnostic Procedure without CONSULT-IIACS008CZ
OBD-II SELF-DIAGNOSTIC PROCEDURE (WITH GST)
Refer to EC-144, "Generic Scan Tool (GST) Function" (for VQ35DE) or EC-835, "Generic Scan Tool (GST)
Function" (for VK45DE).
OBD-II SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)
Refer to EC-69, "Malfunction Indicator Lamp (MIL)" (for VQ35DE) or EC-760, "Malfunction Indicator Lamp
(MIL)" (for VK45DE).
TCM SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)
Description
In the unlikely event of a malfunction in the electrical system, when the ignition switch is switched “ON”, the A/
T CHECK indicator lamp lights up for 2 seconds, then flashes for 8 seconds. If there is no malfunction, when
the ignition switch is turned “ON”, the indicator lamp lights up for 2 seconds. As a method for locating the sus-
pect circuit, when the self-diagnostics start signal is input, the memory for the malfunction location is output
and the A/T CHECK indicator lamp flashes to display the corresponding DTC.
Diagnostic Procedure
1. CHECK A/T CHECK INDICATOR LAMP
1. Start the engine with selector lever in “P” position. Warm engine to normal operating temperature.
2. Turn ignition switch “ON” and “OFF” at least twice, then leave it in the “OFF” position.
3. Wait 10 seconds.
4. Turn ignition switch “ON”. (Do not start engine.)
Does A/T CHECK indicator lamp come on for about 2 seconds?
YES >> GO TO 2.
NO >> GO TO AT- 1 9 3
.
2. JUDGEMENT PROCEDURE STEP 1
1. Turn ignition switch “OFF”.
2. Push shift lock release button.
3. Move selector lever from “P” to “D” position.
4. Release accelerator pedal. (Set the closed throttle position signal “ON”.)
5. Depress brake pedal. (Stop lamp switch signal “ON”.)
6. Turn ignition switch “ON”. (Do not start engine.)
7. Wait 3 seconds.
>> GO TO 3.
3. JUDGEMENT PROCEDURE STEP 2
1. Move the selector lever to the manual shift gate side. (Manual mode switch “ON”.)
2. Release brake pedal. (Stop lamp switch signal “OFF”.)
3. Move the selector lever to “D” position. (Manual mode switch “OFF”.)
4. Depress brake pedal. (Stop lamp switch signal “ON”.)
5. Release brake pedal. (Stop lamp switch signal “OFF”.)
6. Depress accelerator pedal fully and release it.
>> GO TO 4.

AT-104
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
4. CHECK SELF-DIAGNOSIS CODE
Check A/T CHECK indicator lamp. Refer to AT- 1 0 4 , "
Judgement Self-diagnosis Code" .
If the system does not go into self-diagnostics. Refer to AT- 11 4 , "
DTC P0705 PARK/NEUTRAL POSITION
SWITCH" , AT- 1 7 0 , "DTC P1815 MANUAL MODE SWITCH" , AT- 1 8 7 , "CLOSED THROTTLE POSITION AND
WIDE OPEN THROTTLE POSITION CIRCUIT" , AT- 1 8 8 , "BRAKE SIGNAL CIRCUIT" .
>> DIAGNOSIS END
Judgement Self-diagnosis Code
If there is a malfunction, the lamp lights up for the time corresponding to the suspect circuit.
No. Malfunctioning item No. Malfunctioning item
1 Revolution sensor AT- 11 8
10 A/T fluid temperature sensor AT-136
2 Direct clutch solenoid valve AT- 1 5 8 , AT- 1 6 011 Turbine revolution sensor AT-141
3 Torque converter clutch solenoid valve
AT- 1 2 5 , AT-
12712 A/T interlock AT-145
4 Line pressure solenoid valve AT- 1 2 913 A/T 1st engine braking AT- 1 4 8
5 Input clutch solenoid valve AT-150 , AT-15214 Start signal AT-109
6 Front brake solenoid valve AT-154 , AT-15615 Accelerator pedal position sensor AT-133
7 Low coast brake solenoid valve AT-166 , AT-16816 Engine speed signal AT-123
8 High and low reverse clutch solenoid valve
AT-162 ,
AT- 1 6 417 CAN communication line AT-106
9 PNP switch AT- 11 4
SCIA5767E