Infiniti I35 (A33). Manual — part 46
Diagnostic Procedure
NHAT0069
1
CHECK SHIFT SOLENOID VALVE RESISTANCE
1. Turn ignition switch to OFF position.
2. Disconnect terminal cord assembly connector in engine compartment.
3. Check resistance between terminal 2 (R) and ground.
SAT632JD
OK or NG
OK
©
GO TO 3.
NG
©
GO TO 2.
2
CHECK SHIFT SOLENOID VALVE OPERATION
1. Remove control valve assembly. Refer to AT-282.
2. Check the following items:
I
Shift solenoid valve A
I
Operation check
i. Check solenoid valve by listening for its operating sound while applying battery voltage to the terminal and ground.
SAT827K
I
Harness of terminal cord assembly for short or open
OK or NG
OK
©
GO TO 3.
NG
©
Repair or replace damaged parts.
GI
MA
EM
LC
EC
FE
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0750 SHIFT SOLENOID VALVE A
Diagnostic Procedure
AT-181
3
CHECK POWER SOURCE CIRCUIT
1. Turn ignition switch to OFF position.
2. Disconnect TCM harness connector.
3. Check continuity between terminal cord assembly connector terminal 2 (R) and TCM harness connector F51 terminal
11 (R/Y). Refer to wiring diagram — AT — SSV/A.
Continuity should exist.
If OK, check harness for short to ground and short to power.
4. Reinstall any part removed.
OK or NG
OK
©
GO TO 4.
NG
©
Repair open circuit or short to ground or short to power in harness or connectors.
4
CHECK DTC
Perform Diagnostic Trouble Code (DTC) confirmation procedure, AT-179.
OK or NG
OK
©
INSPECTION END
NG
©
GO TO 5.
5
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.
DTC P0750 SHIFT SOLENOID VALVE A
Diagnostic Procedure (Cont’d)
AT-182
SAT820K
Description
NHAT0070
Shift solenoid valves A and B are turned ON or OFF” by the TCM
in response to signals sent from the park/neutral position (PNP)
switch, vehicle speed and electric throttle control actuator (throttle
position sensors). Gears will then be shifted to the optimum posi-
tion.
Gear position
1
2
3
4
Shift solenoid valve A
ON (Closed)
OFF (Open)
OFF (Open)
ON (Closed)
Shift solenoid valve B
ON (Closed)
ON (Closed)
OFF (Open)
OFF (Open)
TCM TERMINALS AND REFERENCE VALUE
NHAT0070S01
Remarks: Specification data are reference values.
Terminal
No.
Wire color
Item
Condition
Judgement
standard
(Approx.)
12
LG/B
Shift solenoid
valve B
When shift solenoid valve B operates.
(When driving in D
1
or D
2
.)
Battery volt-
age
When shift solenoid valve B does not operate.
(When driving in D
3
or D
4
.)
0V
On Board Diagnosis Logic
NHAT0237
Diagnostic trouble code SFT SOL B/CIRC with CONSULT-II or
P0755 without CONSULT-II is detected when TCM detects an
improper voltage drop when it tries to operate the solenoid valve.
Possible Cause
NHAT0239
Check the following items.
I
Harness or connectors
(The solenoid circuit is open or shorted.)
I
Shift solenoid valve B
GI
MA
EM
LC
EC
FE
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0755 SHIFT SOLENOID VALVE B
Description
AT-183
SAT014K
SEF949Y
Diagnostic Trouble Code (DTC) Confirmation
Procedure
NHAT0238
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously conducted,
always turn ignition switch OFF and wait at least 10 seconds before
conducting the next test.
After the repair, perform the following procedure to confirm the
malfunction is eliminated.
WITH CONSULT-II
NHAT0238S01
1)
Turn ignition switch ON and select “DATA MONITOR” mode for
“ENGINE” with CONSULT-II.
2)
Start engine.
3)
Drive vehicle in D position and allow the transmission to shift
1
,
2
,
3 (“GEAR”).
WITH GST
NHAT0238S02
Follow the procedure “With CONSULT-II”.
DTC P0755 SHIFT SOLENOID VALVE B
Diagnostic Trouble Code (DTC) Confirmation Procedure
AT-184
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