Infiniti QX4 (R50). Manual — part 64
17. A/T Does Not Shift: D
4
→
D
3
, When
Overdrive Control Switch “ON”
→
“OFF”
=NBAT0089
SYMPTOM:
A/T does not shift from D
4
to D
3
when changing overdrive
control switch to “OFF” position.
1
CHECK OVERDRIVE CONTROL SWITCH CIRCUIT
With CONSULT-II
Does “TCM INPUT SIGNALS” in Data Monitor show damage to overdrive control switch circuit?
Without CONSULT-II
Does self-diagnosis show damage to overdrive control switch circuit?
SAT344H
Yes or No
Yes
©
Check overdrive control switch circuit. Refer to AT-257.
No
©
Go to “10. A/T Does Not Shift: D
2
,
D
3
”, AT-239.
GI
MA
EM
LC
EC
FE
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSES FOR SYMPTOMS
17. A/T Does Not Shift: D
4
→
D
3
, When Overdrive Control Switch “ON”
→
“OFF”
AT-253
18. A/T Does Not Shift: D
3
→
2
2
, When Selector
Lever “D”
→
“2” Position
=NBAT0090
SYMPTOM:
A/T does not shift from D
3
to 2
2
when changing selector lever
from “D” to “2” position.
1
CHECK PNP SWITCH CIRCUIT
With CONSULT-II
Does “TCM INPUT SIGNALS” in Data Monitor show damage to PNP switch circuit?
Without CONSULT-II
Does self-diagnosis show damage to PNP switch circuit?
SAT367J
Yes or No
Yes
©
Check PNP switch circuit. Refer to “DTC P0705”, AT-99.
No
©
Go to “9. A/T Does Not Shift: D
1
,
D
2
Or Does Not Kickdown: D
4
,
D
2
”, AT-236.
TROUBLE DIAGNOSES FOR SYMPTOMS
18. A/T Does Not Shift: D
3
→
2
2
, When Selector Lever “D”
→
“2” Position
AT-254
19. A/T Does Not Shift: 2
2
→
1
1
, When Selector
Lever “2”
→
“1” Position
=NBAT0091
SYMPTOM:
A/T does not shift from 2
2
to 1
1
when changing selector lever
from “2” to “1” position.
1
CHECK PNP SWITCH CIRCUIT
With CONSULT-II
Does “TCM INPUT SIGNALS” in Data Monitor show damage to PNP switch circuit?
Without CONSULT-II
Does self-diagnosis show damage to PNP switch circuit?
SAT367J
Yes or No
Yes
©
Check PNP switch circuit. Refer to “DTC P0705”, AT-99.
No
©
GO TO 2.
2
CHECK SYMPTOM
Check again.
SAT778B
OK or NG
OK
©
INSPECTION END
NG
©
1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness con-
nector.
GI
MA
EM
LC
EC
FE
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSES FOR SYMPTOMS
19. A/T Does Not Shift: 2
2
→
1
1
, When Selector Lever “2”
→
“1” Position
AT-255
20. Vehicle Does Not Decelerate By Engine
Brake
NBAT0092
SYMPTOM:
Vehicle does not decelerate by engine brake when shifting
from 2
2
(1
2
) to 1
1
.
1
CHECK SYMPTOM
Is “6. Vehicle Does Not Creep Backward In “R” Position” OK?
Yes or No
Yes
©
Go to “15. Engine Speed Does Not Return To Idle (Light Braking D
4
,
D
3
)”, AT-250.
No
©
Go to “6. Vehicle Does Not Creep Backward In “R” Position”, AT-227.
TROUBLE DIAGNOSES FOR SYMPTOMS
20. Vehicle Does Not Decelerate By Engine Brake
AT-256
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