Infiniti I30 (A33). Manual — part 51
7
DETECT MALFUNCTIONING ITEM
1. Remove oil pan. Refer to AT-280.
2. Check the following items:
I
A/T fluid temperature sensor
i. Check resistance between two terminals while changing temperature as shown below.
SAT298F
MTBL0210
I
Harness of terminal cord assembly for short or open
OK or NG
OK (without CONSULT-
II)
©
GO TO 8.
NG
©
Repair or replace damaged parts.
8
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.
SAT354J
Voltage:
Cold [20°C (68°F)]
→
Hot [80°C (176°F)]:
Approximately 1.5V
→
0.5V
3. Turn ignition switch to OFF position.
4. Disconnect TCM harness connector.
5. Check resistance between terminal 42 and ground. Refer to wiring diagram — AT — BA/FTS.
Continuity should exist.
OK or NG
OK
©
GO TO 10.
NG
©
GO TO 9.
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)
Diagnostic Procedure (Cont’d)
AT-201
9
DETECT MALFUNCTIONING ITEM
Check the following items:
I
Harness for short or open between TCM, ECM and terminal cord assembly (Main harness)
I
Ground circuit for ECM
Refer to EC-145, “TROUBLE DIAGNOSIS FOR POWER SUPPLY”.
OK or NG
OK
©
GO TO 10.
NG
©
Repair or replace damaged parts.
10
CHECK DTC
Perform Diagnostic Trouble Code (DTC) confirmation procedure, AT-197.
OK or NG
OK
©
INSPECTION END
NG
©
GO TO 11.
11
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 BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM
POWER SOURCE)
Diagnostic Procedure (Cont’d)
AT-202
SAT639J
Description
NHAT0082
The vehicle speed sensor·MTR is built into the speedometer
assembly. The sensor functions as an auxiliary device to the revo-
lution sensor when it is malfunctioning. The TCM will then use a
signal sent from the vehicle speed sensor·MTR.
TCM TERMINALS AND REFERENCE VALUE
NHAT0082S01
Remarks: Specification data are reference values.
Terminal
No.
Wire color
Item
Condition
Judgement
standard
(Approx.)
40
PU/R
Vehicle speed sen-
sor
When moving vehicle at 2 to 3 km/h (1 to 2
MPH) for 1 m (3 ft) or more.
Voltage varies
between less
than 1V and
more than
4.5V
42
B
Throttle position
sensor (Ground)
—
—
—
On Board Diagnosis Logic
NHAT0249
Diagnostic trouble code VHCL SPEED SEN·MTR with CONSULT-II
or 2nd judgement flicker without CONSULT-II is detected when
TCM does not receive the proper voltage signal from the sensor.
Possible Cause
NHAT0250
Check the following items.
I
Harness or connectors
(The sensor circuit is open or shorted.)
I
Vehicle speed sensor
GI
MA
EM
LC
EC
FE
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC VEHICLE SPEED SENSOR·MTR
Description
AT-203
SAT014K
Diagnostic Trouble Code (DTC) Confirmation
Procedure
NHAT0251
SAT971J
SAT329H
CAUTION:
I
Always drive vehicle at a safe speed.
I
If conducting this “DTC Confirmation Procedure” again,
always turn ignition switch OFF and wait at least 5 sec-
onds before continuing.
After the repair, perform the following procedure to confirm the
malfunction is eliminated.
WITH CONSULT-II
NHAT0251S01
1)
Turn ignition switch ON and select “DATA MONITOR” mode for
“A/T” with CONSULT-II.
2)
Start engine and accelerate vehicle from 0 to 25 km/h (0 to 16
MPH).
WITHOUT CONSULT-II
NHAT0251S02
1)
Start engine.
2)
Drive vehicle under the following conditions:
Selector lever in D and vehicle speed higher than 25 km/h (16
MPH).
3)
Perform self-diagnosis.
Refer
to
TCM
SELF-DIAGNOSTIC
PROCEDURE
(NO
TOOLS), AT-50.
DTC VEHICLE SPEED SENSOR·MTR
Diagnostic Trouble Code (DTC) Confirmation Procedure
AT-204
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст