Infiniti I35 (A33). Manual — part 50
Diagnostic Procedure
NHAT0078
1
CHECK SOLENOID VALVE RESISTANCE
1. Turn ignition switch to OFF position.
2. Disconnect terminal cord assembly connector in engine compartment.
3. Check resistance between terminal 3 (BR/Y) and ground.
SAT637JE
OK or NG
OK
©
GO TO 3.
NG
©
GO TO 2.
2
CHECK SOLENOID VALVE OPERATION
1. Remove control valve assembly. Refer to AT-282.
2. Check the following items:
I
Overrun clutch solenoid valve
I
Operation check
i. Check solenoid valve by listening for its operating sound while applying battey voltage to the terminal and ground.
SAT831K
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 P1760 OVERRUN CLUTCH SOLENOID VALVE
Diagnostic Procedure
AT-197
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 3 (BR/Y) and TCM harness connector F51 termi-
nal 20 (BR/Y). Refer to wiring diagram — AT — OVRCVS.
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-195.
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 P1760 OVERRUN CLUTCH SOLENOID VALVE
Diagnostic Procedure (Cont’d)
AT-198
SAT820K
SAT021J
Description
NHAT0079
The A/T fluid temperature sensor detects the A/T fluid temperature
and sends a signal to the TCM.
CONSULT-II REFERENCE VALUE IN DATA MONITOR
MODE
NHAT0079S01
Remarks: Specification data are reference values.
Monitor item
Condition
Specification (Approximately)
A/T fluid temperature
sensor
Cold [20°C (68°F)]
"
Hot [80°C (176°F)]
1.5V
"
0.5V
2.5 k
Ω
"
0.3 k
Ω
TCM TERMINALS AND REFERENCE VALUE
NHAT0079S02
Remarks: Specification data are reference values.
Terminal
No.
Wire color
Item
Condition
Judgement
standard
(Approx.)
10
R/Y
Power source
When turning ignition switch to ON.
Battery volt-
age
When turning ignition switch to OFF.
0V
19
R/Y
Power source
Same as No. 10
28
Y/R
Power source
(Memory back-up)
or
When turning ignition switch to OFF.
Battery volt-
age
When turning ignition switch to ON.
Battery volt-
age
42
B
Sensor ground
—
0V
47
G
A/T fluid tempera-
ture sensor
When ATF temperature is 20°C (68°F).
1.5V
When ATF temperature is 80°C (176°F).
0.5V
GI
MA
EM
LC
EC
FE
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM
POWER SOURCE)
Description
AT-199
On Board Diagnosis Logic
NHAT0246
Diagnostic trouble code BATT/FLUID TEMP SEN with CONSULT-II
or 8th judgement flicker without CONSULT-II is detected when
TCM receives an excessively low or high voltage from the sensor.
Possible Cause
NHAT0247
Check the following items.
I
Harness or connectors
(The sensor circuit is open or shorted.)
I
A/T fluid temperature sensor
SAT014K
SAT860K
SAT550K
Diagnostic Trouble Code (DTC) Confirmation
Procedure
NHAT0248
After the repair, perform the following procedure to confirm the
malfunction is eliminated.
WITH CONSULT-II
NHAT0248S01
1)
Start engine.
2)
Select “DATA MONITOR” mode for “A/T” with CONSULT-II.
3)
Drive vehicle under the following conditions:
Selector lever in D, vehicle speed higher than 20 km/h (12
MPH).
WITHOUT CONSULT-II
NHAT0248S02
1)
Start engine.
2)
Drive vehicle under the following conditions:
Selector lever in D, vehicle speed higher than 20 km/h (12
MPH).
3)
Perform self-diagnosis.
Refer to AT-52, “TCM SELF-DIAGNOSTIC PROCEDURE (NO
TOOLS)”.
DTC BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM
POWER SOURCE)
On Board Diagnosis Logic
AT-200
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