2004 INFINITI FX35 brake

AT-56
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
4. CHECK “N” POSITION FUNCTIONS
1. Start the engine.
2. Move selector lever to “N” position.
3. Release the parking brake.
Does vehicle move forward or backward?
YES >> Enter a check mark at “In “N” position Vehicle Moves” on the diagnostics worksheet AT- 4 6 , 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 diagnostics worksheet AT- 4 6 ,
then continue the road test.
NO >> GO TO 6.
6. CHECK “R” POSITION FUNCTIONS
1. Engage the brake.
2. Move selector lever to “R” position.
3. Release 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 diagnostics
worksheet AT- 4 6
, then continue the road test.
7. CHECK “D” POSITION FUNCTIONS
Inspect whether the vehicle moves forward when the transmission is put into the “D” position.
Does the vehicle creep forward in the
“D” positions?
YES >> Go to AT- 5 7 , "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 diagnostics work-
sheet AT- 4 6
, then continue the road test. Go to AT- 5 7 , "Cruise Test - Part 1" , AT- 6 0 , "Cruise Test
- Part 2" and AT- 6 1 , "Cruise Test - Part 3" .

AT-58
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
5. CHECK SHIFT UP D4 → D5
Press down the accelerator pedal about half way and inspect if the vehicle shifts up (D4 → D5) at the appropri-
ate speed.

Refer to AT- 6 2 , "Vehicle Speed When Shifting Gears" .
With CONSULT-II
Read the gear position, throttle opening, and vehicle speed. Refer to AT- 9 7 , "
DATA MONITOR MODE" .
Does the A/T shift up D4
→ D5 at the correct speed?
YES >> GO TO 6.
NO >> Enter a check mark at “A/T Does Not Shift:D4 → D5” on the diagnostics worksheet AT- 4 6
, then
continue the road test.
6. CHECK LOCK-UP
When releasing accelerator pedal from D5, check lock-up from D5 to L/U.

Refer to AT- 6 2 , "Vehicle Speed When Shifting Gears" .
With CONSULT-II
Select “TCC SOL 0.00A” with the “MAIN SIGNAL” mode for “A/T”. Refer to AT- 9 1 , "
CONSULT-II REFER-
ENCE VALUE" .
Does it lock-up?
YES >> GO TO 7.
NO >> Enter a check mark at “A/T Does Not Perform Lock-up” on the diagnostics worksheet AT- 4 6
, then
continue the road test.
7. CHECK LOCK-UP HOLD
Check hold lock-up.
With CONSULT-II
Select “TCC SOL 0.00A” with the “MAIN SIGNAL” mode for “A/T”. Refer to AT- 9 1 , "
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 diagnostics worksheet AT-
46 , 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 SOL 0.00A” with the “MAIN SIGNAL” mode for “A/T”. Refer to AT- 9 1 , "
CONSULT-II REFER-
ENCE VALUE" .
Does lock-up cancel?
YES >> GO TO 9.
NO >> Enter a check mark at “Lock-up Is Not Released” on the diagnostics worksheet AT- 4 6
, then con-
tinue the road test.

TROUBLE DIAGNOSIS
AT-59
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Revision: 2004 November 2004 FX35/FX45
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 7 , "
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 diagnostics worksheet,
then continue the road test. Go to Cruise test - Part 2 (Refer to AT- 6 0
).

AT-60
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
Cruise Test - Part 2ACS007AB
1. CHECK STARTING FROM D1
1. Move selector lever to “D” position.
2. Accelerate at half throttle.
With CONSULT-II
Read the gear position. Refer to AT- 9 7 , "
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 diagnostics worksheet AT- 4 6
,
then continue the road test.
2. CHECK SHIFT UP D1 → D2
Press the accelerator pedal down all the way and inspect whether or not the transmission shifts up (D1 → D2)
at the correct speed.

Refer to AT- 6 2 , "Vehicle Speed When Shifting Gears" .
With CONSULT-II
Read the gear position, throttle position and vehicle speed. Refer to AT- 9 7 , "
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 “Vehicle Does Not Shift D1 → D2” on the diagnostics worksheet AT- 4 6
,
then continue the road test.
3. CHECK SHIFT UP D2 → D3
Press the accelerator pedal down all the way and inspect whether or not the transmission shifts up (D2 → D3)
at the correct speed.

Refer to AT- 6 2 , "Vehicle Speed When Shifting Gears" .
With CONSULT-II
Read the gear position, throttle position and vehicle speed. Refer to AT- 9 7 , "
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 “Vehicle Does Not Shift D2 → D3” on the diagnostics worksheet AT- 4 6
,
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 7 , "
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 “Vehicle Does Not Shift D3 → D4” on the diagnostics worksheet AT- 4 6
,
then continue the road test. (Refer to AT- 6 1
).

TROUBLE DIAGNOSIS
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Revision: 2004 November 2004 FX35/FX45
Cruise Test - Part 3ACS007AC
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 checkmark to “Cannot Be Changed To Manual Mode” on diagnostics
worksheet AT- 4 6
.
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 7 , "
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 diagnostics worksheet AT- 4 6
, then continue the road test.
3. CHECK ENGINE BRAKE
Check engine brake.
Does engine braking effectively reduce speed in M1 position?
YES >> 1. Stop the vehicle.
2. Carry out the self-diagnostics. Refer to AT- 9 4 , "
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 diagnostics work-
sheet AT- 4 6
, then continue trouble diagnosis.

TROUBLE DIAGNOSIS
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Revision: 2004 November 2004 FX35/FX45
Symptom ChartACS007AG

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

Overhaul and inspection inside the A/T only if A/T fluid condition is NG. Refer to AT- 5 1 , "Fluid Condition
Check" .
No. Items Symptom Condition Diagnostic ItemReference
page
1
Shift
ShockLarge shock. (N → D
position)
Refer to AT-195,
"Large Shock (“N” to
“D” Position)" .ON vehicle1. Engine idle speedEC-37
(for
VQ35DE)
or EC-685

(for
VK45DE)
2. Engine speed signalAT-121
3. Accelerator pedal position sensorAT-136
4. Control linkage adjustmentAT-234
5. ATF temperature sensorAT-139
6. ATF pressure switch 1 and front brake solenoid valveAT-178,
AT-156
7. CAN communication lineAT-105
8. Fluid level and stateAT- 5 1
9. Line pressure testAT- 5 2
10. Control valve with TCMAT-242
OFF vehicle11. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to AT-17, "Cross-Sectional View (2WD Models)" or AT-18, "Cross-
Sectional View (AWD Models)" )AT-286
2Shock is too large
when changing D1 →
D
2 or M1 → M2 .ON vehicle1. Accelerator pedal position sensorAT-136
2. Control linkage adjustmentAT-234
3. ATF pressure switch 5 and direct clutch solenoid valveAT-182,
AT-160
4. CAN communication lineAT-105
5. Engine speed signalAT-121
6. Turbine revolution sensorAT-143
7. Vehicle speed sensor A/T and vehicle speed sensor MTRAT- 11 6,
AT-145
8. Fluid level and stateAT- 5 1
9. Control valve with TCMAT-242
OFF vehicle 10. Direct clutchAT-323

AT-66
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
3
Shift
ShockShock is too large
when changing D2 →
D
3 or M2 → M3 .ON vehicle1. Accelerator pedal position sensorAT- 1 3 6
2. Control linkage adjustmentAT- 2 3 4
3. ATF pressure switch 6, high and low reverse clutch sole-
noid valveAT- 1 8 4,
AT- 1 6 4
4. CAN communication lineAT- 1 0 5
5. Engine speed signalAT- 1 2 1
6. Turbine revolution sensorAT- 1 4 3
7. Vehicle speed sensor A/T and vehicle speed sensor MTRAT- 11 6,
AT- 1 4 5
8. Fluid level and stateAT- 5 1
9. Control valve with TCMAT- 2 4 2
OFF vehicle 10. High and low reverse clutchAT- 3 2 0
4Shock is too large
when changing D3 →
D
4 or M3 → M4 .ON vehicle1. Accelerator pedal position sensorAT- 1 3 6
2. Control linkage adjustmentAT- 2 3 4
3. ATF pressure switch 3 and input clutch solenoid valveAT- 1 8 0,
AT- 1 5 2
4. CAN communication lineAT- 1 0 5
5. Engine speed signalAT- 1 2 1
6. Turbine revolution sensorAT- 1 4 3
7. Vehicle speed sensor A/T and vehicle speed sensor MTRAT- 11 6,
AT- 1 4 5
8. Fluid level and stateAT- 5 1
9. Control valve with TCMAT- 2 4 2
OFF vehicle 10. Input clutchAT- 3 0 8
5Shock is too large
when changing D4 →
D
5 or M4 → M5 .ON vehicle1. Accelerator pedal position sensorAT- 1 3 6
2. Control linkage adjustmentAT- 2 3 4
3. ATF pressure switch 1 and front brake solenoid valveAT- 1 7 8,
AT- 1 5 6

4. CAN communication lineAT- 1 0 5
5. Engine speed signalAT- 1 2 1
6. Turbine revolution sensorAT- 1 4 3
7. Vehicle speed sensor A/T and vehicle speed sensor MTRAT- 11 6,
AT- 1 4 5
8. Fluid level and stateAT- 5 1
9. Control valve with TCMAT- 2 4 2
OFF vehicle10. Front brake (brake band)AT- 2 7 411. Input clutchAT- 3 0 8
No. Items Symptom Condition Diagnostic ItemReference
page

TROUBLE DIAGNOSIS
AT-67
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Revision: 2004 November 2004 FX35/FX45
6
Shift
ShockShock is too large for
downshift when accel-
erator pedal is
pressed.ON vehicle1. Accelerator pedal position sensorAT-136
2. Control linkage adjustmentAT-234
3. CAN communication lineAT-105
4. Engine speed signalAT-121
5. Turbine revolution sensorAT-143
6. Vehicle speed sensor A/T and vehicle speed sensor MTRAT- 11 6,
AT-145
7. Fluid level and stateAT- 5 1
8. Control valve with TCMAT-242
OFF vehicle9. Front brake (brake band)AT-27410. Input clutch AT-308
11. High and low reverse clutchAT-320
12. Direct clutchAT-323
7Shock is too large for
upshift when acceler-
ator pedal is released.ON vehicle1. Accelerator pedal position sensorAT-136
2. Control linkage adjustmentAT-234
3. Engine speed signalAT-121
4. CAN communication lineAT-105
5. Turbine revolution sensorAT-143
6. Vehicle speed sensor A/T and vehicle speed sensor MTRAT- 11 6,
AT-145
7. Fluid level and stateAT- 5 1
8. Control valve with TCMAT-242
OFF vehicle9. Front brake (brake band)AT-27410. Input clutch AT-308
11. High and low reverse clutch AT-320
12. Direct clutch AT-323
8Shock is too large for
lock-up.ON vehicle1. Accelerator pedal position sensorAT-136
2. Control linkage adjustmentAT-234
3. Engine speed signalAT-121
4. CAN communication lineAT-105
5. Turbine revolution sensorAT-143
6. Vehicle speed sensor A/T and vehicle speed sensor MTRAT- 11 6,
AT-145
7. Torque converter clutch solenoid valveAT-123
8. Fluid level and stateAT- 5 1
9. Control valve with TCMAT-242
OFF vehicle 10. Torque converterAT-286
No. Items Symptom Condition Diagnostic ItemReference
page