Infiniti I30 (A33). Manual — part 65
17. A/T Does Not Shift: D
4
→
D
3
, When
Overdrive Control Switch ON
→
OFF
=NHAT0104
SYMPTOM:
A/T does not shift from D
4
to D
3
when changing overdrive
control switch to OFF position.
1
CHECK OVERDRIVE 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 “DTC P0705”, AT-102.
No
©
Go to 10. A/T Does Not Shift: D
2
,
D
3
, AT-242.
GI
MA
EM
LC
EC
FE
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-257
18. A/T Does Not Shift: D
3
→
2
2
, When Selector
Lever D
→
2 Position
=NHAT0105
SYMPTOM:
A/T does not shift from D
3
to 2
2
when changing selector lever
from D to 2 position.
1
CHECK PARK/NEUTRAL POSITION (PNP) SWITCH CIRCUIT
With CONSULT-II
Does “TCM INPUT SIGNALS” in “DATA MONITOR” show damage to park/neutral position (PNP) switch circuit?
Without CONSULT-II
Does self-diagnosis show damage to park/neutral position (PNP) switch circuit?
SAT367J
Yes or No
Yes
©
Check park/neutral position (PNP) switch circuit. Refer to “DTC P0705”, AT-102.
No
©
Go to 9. A/T Does Not Shift: D
1
,
D
2
Or Does Not Kickdown: D
4
,
D
2
, AT-239.
TROUBLE DIAGNOSES FOR SYMPTOMS
18. A/T Does Not Shift: D
3
→
2
2
, When Selector Lever D
→
2 Position
AT-258
19. A/T Does Not Shift: 2
2
→
1
1
, When Selector
Lever 2
→
1 Position
=NHAT0106
SYMPTOM:
A/T does not shift from 2
2
to 1
1
when changing selector lever
from 2 to 1 position.
1
CHECK PARK/NEUTRAL POSITION (PNP) SWITCH CIRCUIT
With CONSULT-II
Does “TCM INPUT SIGNALS” in “DATA MONITOR” show damage to park/neutral position (PNP) switch circuit?
Without CONSULT-II
Does self-diagnosis show damage to park/neutral position (PNP) switch circuit?
SAT367J
Yes or No
Yes
©
Check park/neutral position (PNP) switch circuit. Refer to “DTC P0705”, AT-102.
No
©
GO TO 2.
2
CHECK SYMPTOM
Check again.
SAT778B
OK or NG
OK
©
INSPECTION END
NG
©
GO TO 3.
3
CHECK TCM INSPECTION
1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK
©
INSPECTION END
NG
©
Repair or replace damaged parts.
GI
MA
EM
LC
EC
FE
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-259
20. Vehicle Does Not Decelerate By Engine
Brake
=NHAT0107
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-253.
No
©
Go to “6. Vehicle Does Not Creep Backward In R Position”, AT-229.
SAT291HA
SAT757J
SAT289K
21. TCM Self-diagnosis Does Not Activate (PNP,
Overdrive Control and Throttle Position
Switches Circuit Checks)
NHAT0108
SYMPTOM:
O/D OFF indicator lamp does not come on in TCM self-diag-
nostic procedure even if the lamp circuit is good.
DESCRIPTION
NHAT0108S01
I
Park/neutral position (PNP) switch
The park/neutral (PNP) switch assembly includes a transmis-
sion range switch. The transmission range switch detects the
selector lever position and sends a signal to the TCM.
I
Overdrive control switch
Detects the overdrive control switch position (ON or OFF) and
sends a signal to the TCM.
I
Throttle position switch
Consists of a wide open throttle position switch and a closed
throttle position switch.
The wide open throttle position switch sends a signal to the
TCM when the throttle valve is open at least 1/2 of the full
throttle position. The closed throttle position switch sends a
signal to the TCM when the throttle valve is fully closed.
TROUBLE DIAGNOSES FOR SYMPTOMS
20. Vehicle Does Not Decelerate By Engine Brake
AT-260
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