Nissan Primera P11. Instruction — part 196
8
CHECK FUEL PUMP RELAY
Refer to “Component Inspection”, EC-QG-341.
OK or NG
OK
©
GO TO 9.
NG
©
Replace fuel pump relay.
9
CHECK FUEL PUMP
Refer to “Component Inspection”, EC-QG-341.
OK or NG
OK
©
GO TO 10.
NG
©
Replace fuel pump.
10
CHECK INTERMITTENT INCIDENT
Perform “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-QG-102.
©
INSPECTION END
Component Inspection
NCEC0449
FUEL PUMP RELAY
NCEC0449S01
Check continuity between terminals 3 and 5.
Conditions
Continuity
12V direct current supply between terminals 1 and 2
Yes
No current supply
No
If NG, replace relay.
FUEL PUMP
NCEC0449S02
1.
Disconnect fuel pump harness connector.
2.
Check resistance between terminals 1 and 2.
Resistance: 0.2 - 5.0
Ω
[at 25°C (77°F)]
If NG, replace fuel pump.
SEF145X
SEF326W
FUEL PUMP
QG16
I
18DE
Diagnostic Procedure (Cont’d)
EC-341
Component Description
NCEC0451
The power steering oil pressure switch is attached to the power
steering high-pressure tube and detects a power steering load.
When a power steering load is detected, it signals the ECM. The
ECM adjusts the IACV-AAC valve to increase the idle speed and
adjust for the increased load.
CONSULT-II Reference Value in Data Monitor
Mode
NCEC0452
Specification data are reference values.
MONITOR ITEM
CONDITION
SPECIFICATION
PW/ST SIGNAL
I
Engine: After warming up, idle
the engine
Steering wheel in neutral position
(forward direction)
OFF
The steering wheel is fully turned
ON
ECM Terminals and Reference Value
NCEC0453
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM’s transistor. Use a ground other than ECM terminals, such as the ground.
TERMI-
NAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
46
PU/W
Power steering oil pressure
switch
[Engine is running]
I
Steering wheel is fully turned
Approximately 0V
[Engine is running]
I
Steering wheel is not turned
Approximately 5V
NEF124A
Power steering oil pressure switch
POWER STEERING OIL PRESSURE SWITCH
QG16
I
18DE
Component Description
EC-342
Wiring Diagram
NCEC0450
YEC254
POWER STEERING OIL PRESSURE SWITCH
QG16
I
18DE
Wiring Diagram
EC-343
Diagnostic Procedure
=NCEC0454
1
INSPECTION START
Do you have CONSULT-II?
Yes or No
Yes
©
GO TO 2.
No
©
GO TO 3.
2
CHECK OVERALL FUNCTION
With CONSULT-II
1. Start engine.
2. Check “PW/ST SIGNAL” in “DATA MONITOR” mode with CONSULT-II under the following conditions.
PEF591I
MTBL0141
OK or NG
OK
©
INSPECTION END
NG
©
GO TO 4.
Steering is in neutral position
OFF
Steering is turned
ON
POWER STEERING OIL PRESSURE SWITCH
QG16
I
18DE
Diagnostic Procedure
EC-344
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