Infiniti M35/M45 Y50. Manual — part 34
TROUBLE DIAGNOSIS
AT-59
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AT
Cruise Test - Part 1
NCS001KA
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 position. Refer to
.
Starts from D1?
YES
>> GO TO 2.
NO
>> Enter a check mark at
AT-199, "Vehicle Cannot Be Started from D
on the
, 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-
AT-63, "Vehicle Speed at Which Gear Shifting Occurs"
.
With CONSULT-II
Read the gear position, throttle degree of opening and vehicle speed. Refer to
.
Does the A/T shift-up D1
→
D2 at the correct speed?
YES
>> GO TO 3.
NO
AT-201, "A/T Does Not Shift: D
on the
, then continue the road test.
3.
CHECK SHIFT-UP D2
→
D3
Press down the accelerator pedal about half-way and inspect if the vehicle shifts up (D2
→
D3) at the appro-
AT-63, "Vehicle Speed at Which Gear Shifting Occurs"
.
With CONSULT-II
Read the gear position, throttle degree of opening and vehicle speed. Refer to
.
Does the A/T shift-up D2
→
D3 at the correct speed?
YES
>> GO TO 4.
NO
AT-203, "A/T Does Not Shift: D
on the
, then continue the road test.
4.
CHECK SHIFT-UP D3
→
D4
Press down the accelerator pedal about half-way and inspect if the vehicle shifts up (D3
→
D4) at the appro-
AT-63, "Vehicle Speed at Which Gear Shifting Occurs"
.
With CONSULT-II
Read the gear position, throttle degree of opening and vehicle speed. Refer to
.
Does the A/T shift-up D3
→
D4 at the correct speed?
YES
>> GO TO 5.
NO
AT-205, "A/T Does Not Shift: D
on the
AT-60
TROUBLE DIAGNOSIS
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 appro-
priate speed. Refer to
AT-63, "Vehicle Speed at Which Gear Shifting Occurs"
.
With CONSULT-II
Read the gear position, throttle degree of opening and vehicle speed. Refer to
Does the A/T shift-up D4
→
D5 at the correct speed?
YES
>> GO TO 6.
NO
>> Enter a check mark at
AT-207, "A/T Does Not Shift: D
on the
, then continue the road test.
6.
CHECK LOCK-UP
When releasing accelerator pedal (closed throttle position signal: OFF) from D5, check lock-up from D5 to L/U.
Refer to
AT-63, "Vehicle Speed at Which Gear Shifting Occurs"
With CONSULT-II
Select “TCC SOLENOID” with the “MAIN SIGNAL” mode for “A/T”. Refer to
Does it lock-up?
YES
>> GO TO 7.
NO
>> Enter a check mark at
AT-209, "A/T Does Not Lock-up"
, then continue the road test.
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
Does it maintain lock-up status?
YES
>> GO TO 8.
NO
AT-210, "A/T Does Not Hold Lock-up Condition"
on the
, 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
Does lock-up cancel?
YES
>> GO TO 9.
NO
>> Enter a check mark at
AT-212, "Lock-up Is Not Released"
, 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
.
When the A/T shift-down D5
→
D4, does the engine speed drop smoothly back to idle?
YES
>> 1. Stop the vehicle.
.
NO
AT-212, "Engine Speed Does Not Return to Idle"
on the
, then continue the road test. Go to
TROUBLE DIAGNOSIS
AT-61
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AT
Cruise Test - Part 2
NCS001KB
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
.
Does it start from D1?
YES
>> GO TO 2.
NO
>> Enter a check mark at
AT-199, "Vehicle Cannot Be Started from D
on the
, 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 A/T shifts up (D1
→
D2) at the
correct speed. Refer to
AT-63, "Vehicle Speed at Which Gear Shifting Occurs"
.
With CONSULT-II
Read the gear position, throttle position and vehicle speed. Refer to
.
Does the A/T shift-up D1
→
D2 at the correct speed?
YES
>> GO TO 3.
NO
AT-201, "A/T Does Not Shift: D
on the
, 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 A/T shifts up (D2
→
D3) at the
correct speed. Refer to
AT-63, "Vehicle Speed at Which Gear Shifting Occurs"
.
With CONSULT-II
Read the gear position, throttle position and vehicle speed. Refer to
.
Does the A/T shift-up D2
→
D3 at the correct speed?
YES
>> GO TO 4.
NO
AT-203, "A/T Does Not Shift: D
on the
, then continue the road test.
4.
CHECK SHIFT-UP D3
→
D4 AND ENGINE BRAKE
When the A/T changes speed D3
→
D4, return the accelerator pedal.
With CONSULT-II
Read the gear position. Refer to
.
Does the A/T shift-up D3
→
D4 and apply the engine brake?
YES
>> 1. Stop the vehicle.
2. Go to
.
NO
AT-205, "A/T Does Not Shift: D
on the
, then continue the road test. Go to
Cruise Test - Part 3
NCS001KC
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
AT-213, "Cannot Be Changed to Manual Mode"
on
AT-62
TROUBLE DIAGNOSIS
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
.
Is downshifting correctly performed?
YES
>> GO TO 2.
NO
>> Enter a check mark at “A/T Does Not Shift” at the corresponding position (5th
→
4th, 4th
→
3rd,
3rd
→
2nd, 2nd
→
1st) on the
, 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. Perform self-diagnostics. Refer to
AT-92, "SELF-DIAGNOSTIC RESULT MODE"
"Diagnostic Procedure without CONSULT-II"
.
NO
>> Enter a check mark at
AT-220, "Vehicle Does Not Decelerate by Engine Brake"
on the
, then continue trouble diagnosis.
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