Infiniti M45 (Y34). Manual — part 43
TROUBLE DIAGNOSIS
AT-57
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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, then con-
tinue 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, then con-
tinue 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 work-
sheet, then continue the road test.
7.
CHECK “D” POSITION FUNCTIONS
Check if whether the vehicle creeps forward when the transmission is at “D” position.
Does the vehicle creep forward in “D” position?
YES
>> Go to
,
, and
NO
>> Enter a check mark at “Vehicle does not creep forward in D positions” on the diagnostics work-
sheet, then continue the road test.
AT-58
TROUBLE DIAGNOSIS
Cruise Test - Part 1
ACS004HT
1.
CHECK STARTING OUT FROM D1
1.
Drive the vehicle for about 10 minutes to warm up the engine oil and A/T fluid.
Appropriate temperature for the A/T fluid: 50 - 80
°
C (122 - 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
.
Start from D1?
YES
>> GO TO 2.
NO
>> Enter a check mark at “Vehicle cannot be started from D1” on the diagnostics worksheet, then
continue the road test.
2.
CHECK SHIFT UP D1
→
D2
Press down the accelerator pedal about half way and check if the vehicle shifts up (D1
→
D2) at the appropri-
ate speed.
●
Refer to
AT-62, "Vehicle Speed When Shifting Gears"
.
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
>> Enter a check mark at “A/T does not shift D1
→
D2” on the diagnostics worksheet, then continue
the road test.
3.
CHECK SHIFT UP D2
→
D3
Press down the accelerator pedal about half way and check if the vehicle shifts up (D2
→
D3) at the appropri-
ate speed.
●
Refer to
AT-62, "Vehicle Speed When Shifting Gears"
.
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
>> Enter a check mark at “A/T does not shift D2
→
D3” on the diagnostics worksheet, then continue
the road test.
4.
CHECK SHIFT UP D3
→
D4
Press down the accelerator pedal about half way and check if the vehicle shifts up (D3
→
D4) at the appropri-
ate speed.
●
Refer to
AT-62, "Vehicle Speed When Shifting Gears"
.
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
>> Enter a check mark at “A/T does not shift D3
→
D4” on the diagnostics worksheet, then continue
the road test.
TROUBLE DIAGNOSIS
AT-59
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5.
CHECK SHIFT UP D4
→
D5
Press down the accelerator pedal about half way and check if the vehicle shifts up (D4
→
D5) at the appropri-
ate speed.
●
Refer to
AT-62, "Vehicle Speed When Shifting Gears"
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 “A/T does not shift D4
→
D5” on the diagnostics worksheet, 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-62, "Vehicle Speed When Shifting Gears"
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 “A/T does not perform lock-up” on the diagnostics worksheet, then continue
the road test.
7.
CHECK LOCK-UP HOLD
Does it maintain lock-up status?
YES
>> GO TO 8.
NO
>> Enter a check mark at “A/T hold does not lock-up condition” on the diagnostics 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
.
Does lock-up cancel?
YES
>> GO TO 9.
NO
>> Enter a check mark at “Lock-up is not released” on the diagnostics 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
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 Cruise test - Part 2 (Refer to
).
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-60
TROUBLE DIAGNOSIS
Cruise Test - Part 2
ACS004HU
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 “Vehicle cannot be started from D1” on the diagnostics worksheet, then
continue the road test.
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-62, "Vehicle Speed When Shifting Gears"
.
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
>> Enter a check mark at “Vehicle does not shift D1
→
D2” on the diagnostics worksheet, then con-
tinue 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-62, "Vehicle Speed When Shifting Gears"
.
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
>> Enter a check mark at “Vehicle does not shift D2
→
D3” on the diagnostics worksheet, then con-
tinue the road test.
4.
CHECK SHIFT UP D3
→
D4 AND ENGINE BRAKE
When the transmission changes speed D3
→
D4, return the accelerator pedal.
Does the A/T shift up D3
→
D4 and apply the engine brake?
YES
>> 1. Stop the vehicle.
2. Go to Cruise test - Part 3 (Refer to
NO
>> Enter a check mark at “Vehicle does not shift D3
→
D4” on the diagnostics worksheet, then con-
tinue the road test.
Cruise Test - Part 3
ACS004HV
1.
CHECK 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 diagnostics
worksheet.
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