Infiniti I30 (A33). Manual — part 46
4
CHECK DTC
Perform Diagnostic Trouble Code (DTC) confirmation procedure, AT-178.
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.
GI
MA
EM
LC
EC
FE
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0755 SHIFT SOLENOID VALVE B
Diagnostic Procedure (Cont’d)
AT-181
SAT289K
Description
NHAT0073
I
Throttle position sensor
The throttle position sensor detects the throttle valve position
and sends a signal to the TCM.
I
Throttle position switch
Consists of a wide open throttle position switch and a closed
throttle position switch.
The wide open throttle position switch sends a signal to the
TCM when the throttle valve is open at least 1/2 of the full
throttle position. The closed throttle position switch sends a
signal to the TCM when the throttle valve is fully closed.
CONSULT-II REFERENCE VALUE IN DATA MONITOR
MODE
NHAT0073S01
Remarks: Specification data are reference values.
Monitor item
Condition
Specification
Throttle position sensor
Fully-closed throttle
Approximately 0.5V
Fully-open throttle
Approximately 4V
TCM TERMINALS AND REFERENCE VALUE
NHAT0073S02
Remarks: Specification data are reference values.
Terminal
No.
Wire color
Item
Condition
Judgement
standard
(Approx.)
16
GY/L
Closed throttle
position switch
(in throttle position
switch)
When releasing accelerator pedal after
warming up engine.
Battery volt-
age
When depressing accelerator pedal after
warming up engine.
0V
17
P
Wide open throttle
position switch
(in throttle position
switch)
When depressing accelerator pedal more
than half-way after warming up engine.
Battery volt-
age
When releasing accelerator pedal after
warming up engine.
0V
32
R
Throttle position
sensor
(Power source)
Ignition switch ON.
4.5 - 5.5V
Ignition switch OFF.
0V
41
W
Throttle position
sensor
When depressing accelerator pedal slowly
after warming up engine.
(Voltage rises gradually in response to
throttle position.)
Fully-closed
throttle: 0.5V
Fully-open
throttle: 4V
42
B
Throttle position
sensor
(Ground)
—
—
—
DTC P1705 THROTTLE POSITION SENSOR
Description
AT-182
On Board Diagnosis Logic
=NHAT0240
Diagnostic trouble code TP SEN/CIRC A/T with CONSULT-II or
P1705 without CONSULT-II is detected when TCM receives an
excessively low or high voltage from the sensor.
Possible Cause
NHAT0241
Check the following items.
I
Harness or connectors
(The sensor circuit is open or shorted.)
I
Throttle position sensor
I
Throttle position switch
GI
MA
EM
LC
EC
FE
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P1705 THROTTLE POSITION SENSOR
On Board Diagnosis Logic
AT-183
SAT014K
Diagnostic Trouble Code (DTC) Confirmation
Procedure
SAT971J
SAT014K
SEF949Y
NHAT0242
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 5 seconds before
conducting the next test.
After the repair, perform the following procedure to confirm the
malfunction is eliminated.
WITH CONSULT-II
NHAT0242S01
1)
Turn ignition switch ON and select “DATA MONITOR” mode for
“A/T” with CONSULT-II.
2)
Apply vacuum to the throttle opener, then check the following.
Refer to steps 1 and 2 of “Preparation”, “TCM SELF-DIAG-
NOSTIC PROCEDURE (No Tools)”, AT-50.
Accelerator pedal
condition
THRTL POS SEN
CLOSED THL/SW
W/O THRL/P·SW
Fully released
Less than 4.7V
ON
OFF
Partially
depressed
0.1 - 4.6V
OFF
OFF
Fully depressed
1.9 - 4.6V
OFF
ON
If the check result is NG, go to “DIAGNOSTIC PROCEDURE”,
AT-186.
If the check result is OK, go to following step.
3)
Turn ignition switch ON and select “DATA MONITOR” mode for
“ENGINE” with CONSULT-II.
4)
Start engine and maintain the following conditions for at least
3 consecutive seconds. Then release accelerator pedal com-
pletely.
VHCL SPEED SE: 10 km/h (6 MPH) or more
THRTL POS SEN: Approximately 3V or less
Selector lever: D position (O/D ON)
If the check result is NG, go to “DIAGNOSTIC PROCEDURE”,
AT-186.
If the check result is OK, go to following step.
5)
Maintain the following conditions for at least 3 consecutive
seconds. Then release accelerator pedal completely.
VHCL SPEED SE: 10 km/h (6 MPH) or more
Accelerator pedal: Wide open throttle
Selector lever: D position (O/D ON)
WITH GST
NHAT0242S02
Follow the procedure “With CONSULT-II”.
DTC P1705 THROTTLE POSITION SENSOR
Diagnostic Trouble Code (DTC) Confirmation Procedure
AT-184
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