Infiniti I30 (A33). Manual — part 29
6
CHECK INPUT SIGNAL OF A/T FLUID TEMPERATURE SENSOR (Without CONSULT-II)
Without CONSULT-II
1. Start engine.
2. Check voltage between TCM terminal 47 and ground while warming up A/T.
SAT335J
Voltage:
Cold [20°C (68°F)]
→
Hot [80°C (176°F)]:
Approximately 1.5V
→
0.5V
OK or NG
OK
©
GO TO 7.
NG
©
GO TO 3.
7
CHECK DTC
Perform Diagnostic Trouble Code (DTC) confirmation procedure, AT-109.
OK or NG
OK
©
INSPECTION END
NG
©
GO TO 8.
8
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
DTC P0710 A/T FLUID TEMPERATURE SENSOR CIRCUIT
Diagnostic Procedure (Cont’d)
AT-113
SAT644J
Description
NHAT0040
The revolution sensor detects the revolution of the idler gear park-
ing pawl lock gear and emits a pulse signal. The pulse signal is sent
to the TCM which converts it into vehicle speed.
TCM TERMINALS AND REFERENCE VALUE
NHAT0040S01
Remarks: Specification data are reference values.
Terminal
No.
Wire color
Item
Condition
Judgement
standard
(Approx.)
29
W
Revolution
sensor
When moving at 20 km/h (12 MPH), use the
CONSULT-II pulse frequency measuring func-
tion.*1
CAUTION:
Connect the diagnosis data link cable to
the vehicle diagnosis connector.
*1: A circuit tester cannot be used to test this
item.
450 Hz
When vehicle parks.
Under 1.3V or
over 4.5V
42
B
Throttle position
sensor
(Ground)
—
—
—
On Board Diagnosis Logic
NHAT0207
Diagnostic trouble code VEH SPD SEN/CIR AT with CONSULT-II
or P0720 without CONSULT-II is detected when TCM does not
receive the proper voltage signal from the sensor.
Possible Cause
NHAT0208
Check the following items.
I
Harness or connectors
(The sensor circuit is open or shorted.)
I
Revolution sensor
DTC P0720 VEHICLE SPEED SENSOR·A/T (REVOLUTION SENSOR)
Description
AT-114
SAT014K
Diagnostic Trouble Code (DTC) Confirmation
Procedure
NHAT0209
SAT971J
SAT014K
SEF949Y
CAUTION:
I
Always drive vehicle at a safe speed.
I
Be careful not to rev engine into the red zone on the
tachometer.
NOTE:
If “DTC Confirmation Procedure” has been previously conducted,
always turn ignition switch OFF and wait at least 5 seconds before
conducting the next test.
After the repair, perform the following procedure to confirm the
malfunction is eliminated.
WITH CONSULT-II
NHAT0209S01
1)
Turn ignition switch ON and select “DATA MONITOR” mode for
“A/T” with CONSULT-II.
2)
Drive vehicle and check for an increase of “VHCL/S SE·MTR”
value.
If the check result is NG, go to “DIAGNOSTIC PROCEDURE”,
AT-204.
If the check result is OK, go to following step.
3)
Select “DATA MONITOR” mode for “ENGINE” with CONSULT-
II.
4)
Start engine and maintain the following conditions for at least
5 consecutive seconds.
VHCL SPEED SE: 30 km/h (19 MPH) or more
THRTL POS SEN: More than 1.2V
Selector lever: D position (O/D ON)
Driving location: Driving the vehicle uphill (increased
engine load) will help maintain the driving conditions
required for this test.
If the check result is NG, go to “DIAGNOSTIC PROCEDURE”,
AT-117.
If the check result is OK, go to following step.
5)
Maintain the following conditions for at least 5 consecutive
seconds.
CMPS·RPM (REF): 3,500 rpm or more
THRTL POS SEN: More than 1.2V
Selector lever: D position (O/D ON)
Driving location: Driving the vehicle uphill (increased
engine load) will help maintain the driving conditions
required for this test.
WITH GST
NHAT0209S02
Follow the procedure “With CONSULT-II”.
GI
MA
EM
LC
EC
FE
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0720 VEHICLE SPEED SENSOR·A/T (REVOLUTION SENSOR)
Diagnostic Trouble Code (DTC) Confirmation Procedure
AT-115
Wiring Diagram — AT — VSSA/T
NHAT0041
MAT871A
SAT295K
DTC P0720 VEHICLE SPEED SENSOR·A/T (REVOLUTION SENSOR)
Wiring Diagram — AT — VSSA/T
AT-116
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