Infiniti I30 (A33). Manual — part 281
SEF197Y
SEF198Y
DTC Confirmation Procedure
NHEC0260
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 10 seconds
before conducting the next test.
WITH CONSULT-II
NHEC0260S01
1)
Start engine and warm it up to normal operating temperature.
2)
Turn ignition switch “OFF”, wait at least 10 seconds and then
start engine.
3)
Select “CLSD THL/P SW” in “DATA MONITOR” mode.
If “CLSD THL/P SW” is not available, go to step 5.
4)
Check the signal under the following conditions.
Condition
Signal indication
Throttle valve: Idle position
ON
Throttle valve: Slightly open
OFF
If the result is NG, go to “Diagnostic Procedure”, EC-442.
If OK, go to following step.
5)
Select “DATA MONITOR” mode with CONSULT-II.
6)
Drive the vehicle for at least 5 consecutive seconds under the
following condition.
THRTL POS SEN
More than 2.5V
VHCL SPEED SE
More than 4 km/h (2 MPH)
Selector lever
Suitable position
Driving location
Driving vehicle uphill (Increased engine load)
will help maintain the driving conditions
required for this test.
7)
If 1st trip DTC is detected, go to “Diagnostic Procedure”,
EC-442.
SEF345X
Overall Function Check
NHEC0261
Use this procedure to check the overall function of the closed
throttle position switch circuit. During this check, a 1st trip DTC
might not be confirmed.
WITH GST
NHEC0261S01
1)
Start engine and warm it up to normal operating temperature.
2)
Check the voltage between ECM terminal 56 (Closed throttle
position switch signal) and ground under the following condi-
tions.
At idle: Battery voltage
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0510 CLOSED THROTTLE POSITION SWITCH
DTC Confirmation Procedure
EC-439
At 2,000 rpm: Approximately 0V
3)
If NG, go to “Diagnostic Procedure”, EC-442.
DTC P0510 CLOSED THROTTLE POSITION SWITCH
Overall Function Check (Cont’d)
EC-440
Wiring Diagram
=NHEC0262
MEC818C
SEF626XC
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0510 CLOSED THROTTLE POSITION SWITCH
Wiring Diagram
EC-441
Diagnostic Procedure
NHEC0263
1
CHECK CLOSED THROTTLE POSITION SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect throttle position switch harness connector.
SEC001C
3. Turn ignition switch “ON”.
4. Check voltage between throttle position switch terminal 5 and engine ground with CONSULT-II or tester.
SEF346X
OK or NG
OK
©
GO TO 3.
NG
©
GO TO 2.
2
DETECT MALFUNCTIONING PART
Check the following.
I
Harness connectors E15, F18
I
Harness for open or short between throttle position switch and ECM relay
I
Harness for open or short between throttle position switch and ECM
©
Repair harness or connectors.
3
CHECK CLOSED THROTTLE POSITION SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 56 and throttle position switch terminal 4.
Refer to Wiring Diagram.
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OK
©
GO TO 4.
NG
©
Repair open circuit or short to ground or short to power in harness or connectors.
DTC P0510 CLOSED THROTTLE POSITION SWITCH
Diagnostic Procedure
EC-442
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