Nissan Primera P11. Instruction — part 235
With CONSULT-II
1)
Turn ignition switch “ON” and select “DATA MONITOR” mode
with CONSULT-II.
2)
Start engine and maintain the following conditions for at least
5 consecutive seconds.
VHCL SPEED SE
More than 4 km/h (2 MPH)
Selector lever
Suitable position except “P” or “N”
position
3)
If 1st trip DTC is detected, go to “Diagnostic Procedure”, EC-
SR-141.
With GST
Follow the procedure “With CONSULT-II” above.
PEF651U
DTC P0120 THROTTLE POSITION SENSOR
SR20DE
DTC Confirmation Procedure (Cont’d)
EC-139
Wiring Diagram
NCEC0084
YEC083A
DTC P0120 THROTTLE POSITION SENSOR
SR20DE
Wiring Diagram
EC-140
Diagnostic Procedure
NCEC0085
1
RETIGHTEN GROUND SCREWS
1. Turn ignition switch “OFF”.
2. Loosen and retighten engine ground screws.
SEF202X
©
GO TO 2.
2
CHECK POWER SUPPLY
1. Disconnect throttle position sensor harness connector.
SEF197X
2. Turn ignition switch “ON”.
3. Check voltage between terminal 3 and ground with CONSULT-II or tester.
SEF209W
Voltage: Approximately 5V
OK or NG
OK
©
GO TO 3.
NG
©
Repair harness or connectors.
3
CHECK GROUND CIRCUIT
1. Turn ignition switch “OFF”.
2. Check harness continuity between throttle position sensor harness connector terminal 1 and engine ground.
Refer to wiring diagram.
Continuity should exist.
3. Also check harness for short to ground and short to power.
OK or NG
OK
©
GO TO 5.
NG
©
GO TO 4.
Intake manifold
collector
Engine
ground
Throttle position
sensor harness
connector
Throttle body
Closed throttle position switch
harness connector (CVT
models)
DTC P0120 THROTTLE POSITION SENSOR
SR20DE
Diagnostic Procedure
EC-141
Component Inspection
NCEC0086
THROTTLE POSITION SENSOR
NCEC0086S01
With 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)
Select “DATA MONITOR” mode with CONSULT-II.
5)
Check voltage of “THRTL POS SEN” under the following con-
ditions.
NOTE:
Voltage measurement must be made with throttle position
sensor installed in vehicle.
Throttle valve conditions
Voltage V
Completely closed
0.35 - 0.65 (a)
Partially open
Between (a) and (b)
Completely open
3.5 - 4.5 (b)
If NG, adjust throttle position sensor idle position. Refer to
“Basic Inspection”, EC-SR-84.
4
DETECT MALFUNCTIONING PART
Check the following.
I
Harness for open or short between ECM and throttle position sensor
I
Harness for open or short between throttle position sensor and TCM (Transmission control module)
©
Repair open circuit or short to ground or short to power in harness or connectors.
5
CHECK INPUT SIGNAL CIRCUIT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 92 and throttle position sensor harness connector terminal 2.
Refer to wiring diagram.
Continuity should exist.
3. Also check harness for short to ground and short to power.
OK or NG
OK
©
GO TO 6.
NG
©
Repair open circuit or short to ground or short to power in harness or connectors.
6
CHECK THROTTLE POSITION SENSOR
Refer to “Component Inspection”, EC-SR-142.
OK or NG
OK
©
GO TO 7.
NG
©
Replace throttle position sensor. To adjust it, perform “Basic Inspection”, EC-SR-84.
7
CHECK INTERMITTENT INCIDENT
Perform “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-SR-114.
©
INSPECTION END
NEF069A
DTC P0120 THROTTLE POSITION SENSOR
SR20DE
Component Inspection
EC-142
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