Infiniti I30 (A33). Manual — part 52
Wiring Diagram — AT — VSSMTR
NHAT0083
MAT974A
SAT313K
GI
MA
EM
LC
EC
FE
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC VEHICLE SPEED SENSOR·MTR
Wiring Diagram — AT — VSSMTR
AT-205
Diagnostic Procedure
NHAT0084
1
CHECK INPUT SIGNAL
With CONSULT-II
1. Start engine.
2. Select “TCM INPUT SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Read out the value of “VHCL/S SE·MTR” while driving.
Check the value changes according to driving speed.
SAT614J
Without CONSULT-II
1. Start engine.
2. Check voltage between TCM terminal 40 and ground while driving at 2 to 3 km/h (1 to 2 MPH) for 1 m (3 ft) or more.
SAT356JA
Voltage:
Voltage varies between less than 1V and more than 4.5V.
OK or NG
OK
©
GO TO 3.
NG
©
GO TO 2.
2
DETECT MALFUNCTIONING ITEM
Check the following items:
I
Vehicle speed sensor and ground circuit for vehicle speed sensor
Refer to EL-147, “METERS AND GAUGES”.
I
Harness for short or open between TCM and vehicle speed sensor (Main harness)
OK or NG
OK
©
GO TO 3.
NG
©
Repair or replace damaged parts.
DTC VEHICLE SPEED SENSOR·MTR
Diagnostic Procedure
AT-206
3
CHECK DTC
Perform Diagnostic Trouble Code (DTC) confirmation procedure, AT-204.
OK or NG
OK
©
INSPECTION END
NG
©
GO TO 4.
4
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 VEHICLE SPEED SENSOR·MTR
Diagnostic Procedure (Cont’d)
AT-207
Description
NHAT0252
The ECM and TCM provide mutual communication in relation to
engine output control signal (ignition timing retard signal) during
rapid standing starts/acceleration. With this consistent real-time
control, the shifting feel is substantially improved.
TCM TERMINALS AND REFERENCE VALUE
NHAT0252S01
Remarks: Specification data are reference values.
Terminal
No.
Wire color
Item
Condition
Judgement
standard
(Approx.)
33
Y/B
LAN
—
—
*: This terminal is connected to the ECM.
On Board Diagnosis Logic
NHAT0253
Diagnostic trouble code A/T COMM LINE with CONSULT-II or 11th
judgement flicker without CONSULT-II is detected when the ECM-
A/T communication line is open or shorted.
Possible Cause
NHAT0254
Check harness or connector.
DTC A/T COMM LINE
Description
AT-208
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