Infiniti I30 (A33). Manual — part 290
12
CHECK THROTTLE POSITION SENSOR
Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Stop engine (ignition switch OFF).
3. Turn ignition switch ON.
4. Check voltage between ECM terminal 91 (Throttle position sensor signal) and ground.
Voltage measurement must be made with throttle position sensor installed in vehicle.
MTBL0231
OK or NG
OK
©
GO TO 14.
NG
©
GO TO 13.
13
ADJUST CLOSED THROTTLE POSITION SWITCH
Adjust closed throttle position switch. Refer to “Basic Inspection”, EC-109.
MTBL0595
OK or NG
OK
©
GO TO 14.
NG
©
Replace throttle position sensor. To adjust it, perform “Basic Inspection”, EC-109.
14
CHECK INTERMITTENT INCIDENT
Perform “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-144.
©
INSPECTION END
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DTC P1130 SWIRL CONTROL VALVE CONTROL SOLENOID VALVE
Diagnostic Procedure (Cont’d)
EC-475
On Board Diagnosis Logic
NHEC0282
★
The closed loop control has the one trip detection logic.
Malfunction is detected when the closed loop control function for
bank 1 does not operate even when vehicle is driving in the speci-
fied condition, the closed loop control function for bank 2 does not
operate even when vehicle is driving in the specified condition.
Possible Cause
NHEC0531
I
The heated oxygen sensor 1 (front) circuit is open or shorted.
I
Heated oxygen sensor 1 (front)
I
Heated oxygen sensor 1 (front) heater
DTC Confirmation Procedure
NHEC0283
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.
TESTING CONDITION:
I
Never raise engine speed above 3,600 rpm during the
“DTC Confirmation Procedure”. If the engine speed limit is
exceeded, retry the procedure from step 2.
I
Before performing the following procedure, confirm that
battery voltage is more than 11V at idle.
SEC011C
WITH CONSULT-II
NHEC0283S01
1)
Start engine and warm it up to normal operating temperature.
2)
Select “DATA MONITOR” mode with CONSULT-II.
3)
Hold engine speed at 2,000 rpm and check one of the follow-
ing.
I
“HO2S1 (B1)/(B2)” voltage should go above 0.70V at least
once.
I
“HO2S1 (B1)/(B2)” voltage should go below 0.21V at least
once.
If the check result is NG, perform “Diagnosis Procedure”,
EC-477.
DTC P1148 (BANK 1), P1168 (BANK 2) CLOSED LOOP CONTROL
On Board Diagnosis Logic
EC-476
If the check result is OK, perform the following step.
4)
Let engine idle at least 5 minutes.
5)
Maintain the following condition at least 50 consecutive sec-
onds.
B/FUEL SCHDL
3 msec or more
ENG SPEED
1,800 - 3,000 rpm
Selector lever
Suitable position
VHCL SPEED SE
More than 70 km/h (43 MPH)
During this test, P0130 and/or P0150 may be displayed on
CONSULT-II screen.
6)
If DTC is detected, go to “Diagnostic Procedure”, EC-477.
SEF308XB
Overall Function Check
NHEC0284
Use this procedure to check the overall function of the closed loop
control. During this check, a DTC might not be confirmed.
WITH GST
NHEC0284S01
1)
Start engine and warm it up to normal operating temperature.
2)
Set voltmeter probes between ECM terminal 63 [HO2S1 (B1)
signal] or 62 [HO2S1 (B2) signal] and engine ground.
3)
Check the following with engine speed held at 2,000 rpm con-
stant under no-load.
I
The voltage should go above 0.70V at least once.
I
The voltage should go below 0.21V at least once.
4)
If NG, go to “Diagnostic Procedure”, EC-477.
Diagnostic Procedure
NHEC0285
Perform trouble diagnosis for “DTC P0133, P0153”, EC-218.
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DTC P1148 (BANK 1), P1168 (BANK 2) CLOSED LOOP CONTROL
DTC Confirmation Procedure (Cont’d)
EC-477
SEF273X
Component Description
NHEC0532
The swirl control valve control vacuum check switch detects
vacuum signal to the swirl control valve, and sends “ON” or “OFF”
signal to the ECM.
When vacuum is supplied to the valve, the swirl control valve con-
trol vacuum check switch sends “OFF” signal to the ECM.
The swirl control valve control vacuum check switch is not used to
control the engine system, it is used for on board diagnosis.
SEF372X
CONSULT-II Reference Value in Data Monitor
Mode
NHEC0533
Specification data are reference values.
MONITOR ITEM
CONDITION
SPECIFICATION
SWL CON VC SW
I
Engine speed: Idle
I
Engine coolant temperature is between 15°C (59°F) to 50°C (122°F).
OFF
I
Engine speed: Idle
I
Engine coolant temperature is above 55°C (131°F).
ON
On Board Diagnosis Logic
NHEC0535
Malfunction is detected when the swirl control valve control vacuum
check switch remains “OFF” under specified engine conditions.
Possible Cause
NHEC0536
I
Harness or connectors
(Swirl control valve control vacuum check switch circuit is
open.)
I
Hoses
(Hoses are clogged or connected incorrectly.)
I
Swirl control valve control solenoid valve
I
Swirl control valve control vacuum check switch
DTC P1165 SWIRL CONTROL VALVE CONTROL VACUUM CHECK SWITCH
Component Description
EC-478
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