Nissan Murano Z50 (2004 year). Manual — part 70
BASIC SERVICE PROCEDURE
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BASIC SERVICE PROCEDURE
PFP:00018
Idle Speed and Ignition Timing Check
ABS004AG
IDLE SPEED
With CONSULT-II
Check idle speed in “DATA MONITOR” mode with CONSULT-II.
With GST
Check idle speed with GST.
IGNITION TIMING
1.
Attach timing light to loop wire as shown.
2.
Check ignition timing.
SEF058Y
PBIB1374E
PBIB1382E
EC-32
BASIC SERVICE PROCEDURE
Revision: 2004 November
2004 Murano
Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment
ABS004AH
PREPARATION
1.
Make sure that the following parts are in good order.
●
Battery
●
Ignition system
●
Engine oil and coolant levels
●
Fuses
●
ECM harness connector
●
Vacuum hoses
●
Air intake system
(Oil filler cap, oil level gauge, etc.)
●
Fuel pressure
●
Engine compression
●
Throttle valve
●
Evaporative emission system
2.
On air conditioner equipped models, checks should be carried out while the air conditioner is OFF.
3.
Checks should be carried out while shift lever is in N position.
4.
When measuring CO percentage, insert probe more than 40 cm (15.7 in) into tail pipe.
5.
Turn off headlamp, heater blower, rear window defogger.
6.
Keep front wheels pointed straight ahead.
BASIC SERVICE PROCEDURE
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OVERALL INSPECTION SEQUENCE
PBIB2086E
EC-34
BASIC SERVICE PROCEDURE
Revision: 2004 November
2004 Murano
INSPECTION PROCEDURE
1.
INSPECTION START
1.
Check service records for any recent repairs that may indicate a related malfunction, or a current need for
scheduled maintenance.
2.
Open engine hood and check the following:
–
Harness connectors for improper connections
–
Wiring harness for improper connections, pinches and cut
–
Vacuum hoses for splits, kinks and improper connections
–
Hoses and ducts for leaks
–
Air cleaner clogging
–
Gasket
3.
Confirm that electrical or mechanical loads are not applied.
–
Head lamp switch is OFF.
–
Air conditioner switch is OFF.
–
Rear window defogger switch is OFF.
–
Steering wheel is in the straight-ahead position, etc.
4.
Start engine and warm it up until engine coolant temperature
indicator points the middle of gauge.
Ensure engine stays below 1,000 rpm.
5.
Run engine at about 2,000 rpm for about 2 minutes under no-
load.
6.
Make sure that no DTC is displayed with CONSULT-II or GST.
OK or NG
OK
>> GO TO 3.
NG
>> GO TO 2.
2.
REPAIR OR REPLACE
Repair or replace components as necessary according to corresponding Diagnostic Procedure.
>> GO TO 3.
SEF983U
SEF976U
SEF977U
BASIC SERVICE PROCEDURE
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3.
CHECK TARGET IDLE SPEED
With CONSULT-II
1.
Run engine at about 2,000 rpm for about 2 minutes under no-load.
2.
Rev engine (2,000 to 3,000 rpm) 2 or 3 times under no-load,
then run engine at idle speed for about 1 minute.
3.
Read idle speed in “DATA MONITOR” mode with CONSULT-II.
Without CONSULT-II
1.
Run engine at about 2,000 rpm for about 2 minutes under no-load.
2.
Rev engine (2,000 to 3,000 rpm) 2 or 3 times under no-load, then run engine at idle speed for about 1
minute.
3.
Check idle speed.
OK or NG
OK
>> GO TO 10.
NG
>> GO TO 4.
4.
PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
1.
Stop engine.
2.
Perform
EC-43, "Accelerator Pedal Released Position Learning"
>> GO TO 5.
5.
PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Perform
EC-43, "Throttle Valve Closed Position Learning"
>> GO TO 6.
SEF978U
CVT:
650
±
50 rpm (in P or N position)
SEF058Y
CVT:
650
±
50 rpm (in P or N position)
EC-36
BASIC SERVICE PROCEDURE
Revision: 2004 November
2004 Murano
6.
PERFORM IDLE AIR VOLUME LEARNING
Perform
EC-43, "Idle Air Volume Learning"
Is Idle Air Volume Learning carried out successfully?
Yes or No
Yes
>> GO TO 7.
No
>> 1. Follow the instruction of Idle Air Volume Learning.
2. GO TO 4.
7.
CHECK TARGET IDLE SPEED AGAIN
With CONSULT-II
1.
Start engine and warm it up to normal operating temperature.
2.
Read idle speed in “DATA MONITOR” mode with CONSULT-II.
Without CONSULT-II
1.
Start engine and warm it up to normal operating temperature.
2.
Check idle speed.
OK or NG
OK
>> GO TO 10.
NG
>> GO TO 8.
8.
DETECT MALFUNCTIONING PART
Check the following.
●
Check camshaft position sensor (PHASE) and circuit. Refer to
●
Check crankshaft position sensor (POS) and circuit. Refer to
OK or NG
OK
>> GO TO 9.
NG
>> 1. Repair or replace.
2. GO TO 4.
9.
CHECK ECM FUNCTION
1.
Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but
this is a rare case.)
2.
Perform initialization of NVIS (NATS) system and registration of all NVIS (NATS) ignition key IDs. Refer to
BL-122, "ECM Re-communicating Function"
>> GO TO 4.
CVT:
650
±
50 rpm (in P or N position)
CVT:
650
±
50 rpm (in P or N position)
BASIC SERVICE PROCEDURE
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10.
CHECK IGNITION TIMING
1.
Run engine at idle.
2.
Check ignition timing with a timing light.
OK or NG
OK (With CONSULT-II)>>GO TO 19.
OK (With GST)>>GO TO 20.
NG
>> GO TO 11.
11.
PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
1.
Stop engine.
2.
Perform
EC-43, "Accelerator Pedal Released Position Learning"
>> GO TO 12.
12.
PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Perform
EC-43, "Throttle Valve Closed Position Learning"
>> GO TO 13.
13.
PERFORM IDLE AIR VOLUME LEARNING
Perform
EC-43, "Idle Air Volume Learning"
.
Is Idle Air Volume Learning carried out successfully?
Yes or No
Yes
>> GO TO 14.
No
>> 1. Follow the instruction of Idle Air Volume Learning.
2. GO TO 4.
CVT:
15
±
5
°
BTDC (in P or N position)
PBIB1382E
EC-38
BASIC SERVICE PROCEDURE
Revision: 2004 November
2004 Murano
14.
CHECK TARGET IDLE SPEED AGAIN
With CONSULT-II
1.
Start engine and warm it up to normal operating temperature.
2.
Read idle speed in “DATA MONITOR” mode with CONSULT-II.
Without CONSULT-II
1.
Start engine and warm it up to normal operating temperature.
2.
Check idle speed.
OK or NG
OK
>> GO TO 15.
NG
>> GO TO 17.
15.
CHECK IGNITION TIMING AGAIN
1.
Run engine at idle.
2.
Check ignition timing with a timing light.
OK or NG
OK (With CONSULT-II)>>GO TO 19.
OK (With GST)>>GO TO 20.
NG
>> GO TO 16.
16.
CHECK TIMING CHAIN INSTALLATION
Check timing chain installation. Refer to
.
OK or NG
OK
>> GO TO 17.
NG
>> 1. Repair the timing chain installation.
2. GO TO 4.
17.
DETECT MALFUNCTIONING PART
Check the following.
●
Check camshaft position sensor (PHASE) and circuit. Refer to
●
Check crankshaft position sensor (POS) and circuit. Refer to
OK or NG
OK
>> GO TO 18.
NG
>> 1. Repair or replace.
2. GO TO 4.
CVT:
650
±
50 rpm (in P or N position)
CVT:
650
±
50 rpm (in P or N position)
CVT:
15
±
5
°
BTDC (in P or N position)
PBIB1382E
BASIC SERVICE PROCEDURE
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18.
CHECK ECM FUNCTION
1.
Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but
this is a rare case.)
2.
Perform initialization of NVIS (NATS) system and registration of all NVIS (NATS) ignition key IDs. Refer to
BL-122, "ECM Re-communicating Function"
.
>> GO TO 4.
19.
CHECK AIR FUEL RATIO (A/F) SENSOR 1 FUNCTION
With CONSULT-II
1.
Turn ignition switch OFF and wait at a least 10 seconds.
2.
Start engine and warm it up to normal operating temperature.
3.
Drive the vehicle at a speed of 80 km/h (50 MPH) for a few minutes in D position.
NOTE:
Keep the accelerator pedal as steady as possible during the cruising.
4.
Then release the accelerator pedal fully until the vehicle speed decreases to 50 km/h (30 MPH).
NOTE:
Never apply brake during releasing the accelerator pedal.
5.
Repeat steps 3 to 4 for 5 times.
6.
Stop the vehicle and connect CONSULT-II to the vehicle.
7.
Make sure that no (1st trip) DTC is displayed in “SELF-DIAG RESULTS” mode.
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 21.
20.
CHECK AIR FUEL RATIO (A/F) SENSOR 1 FUNCTION
With GST
1.
Turn ignition switch OFF and wait at a least 10 seconds.
2.
Start engine and warm it up to normal operating temperature.
3.
Drive the vehicle at a speed of 80 km/h (50 MPH) for a few minutes in D position.
NOTE:
Keep the accelerator pedal as steady as possible during the cruising.
4.
Then release the accelerator pedal fully until the vehicle speed decreases to 50 km/h (30 MPH).
NOTE:
Never apply brake during releasing the accelerator pedal.
5.
Repeat steps 3 to 4 for 5 times.
6.
Stop the vehicle and connect GST to the vehicle.
7.
Make sure that no (1st trip) DTC is displayed.
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 21.
EC-40
BASIC SERVICE PROCEDURE
Revision: 2004 November
2004 Murano
21.
CHECK AIR FUEL RATIO (A/F) SENSOR 1 HARNESS
1.
Turn ignition switch OFF and disconnect battery ground cable.
2.
Disconnect ECM harness connector.
3.
Disconnect A/F sensor 1 harness connector.
4.
Check harness continuity between the following terminals. Refer to
.
5.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 22.
NG
>> 1. Repair open circuit or short to ground or short to power in harness or connectors between ECM
and A/F sensor 1.
2. GO TO 4.
22.
PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
1.
Reconnect ECM harness connector.
2.
Perform
EC-43, "Accelerator Pedal Released Position Learning"
.
>> GO TO 23.
23.
PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Perform
EC-43, "Throttle Valve Closed Position Learning"
>> GO TO 24.
24.
PERFORM IDLE AIR VOLUME LEARNING
Refer to
EC-43, "Idle Air Volume Learning"
Is Idle Air Volume Learning carried out successfully?
Yes or No
Yes (With CONSULT-II)>>GO TO 25.
Yes (Without CONSULT-II)>>GO TO 26.
No
>> 1. Follow the instruction of Idle Air Volume Learning.
2. GO TO 4.
Bank 1
Bank 2
A/F sensor 1 terminal
ECM terminal
A/F sensor 1 terminal
ECM terminal
1
16
1
76
2
75
2
77
4
2
4
24
5
35
5
57
6
56
6
58
Continuity should exist.
BASIC SERVICE PROCEDURE
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25.
CHECK CO%
With CONSULT-II
1.
Start engine and warm it up until engine coolant temperature indicator points the middle of gauge.
2.
Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
3.
Select “ENG COOLANT TEMP” in “ACTIVE TEST” mode.
4.
Set “ENG COOLANT TEMP” to 5
°
C (41
°
F) by touching “DWN”
and “Qd”.
5.
Start engine and rev it (2,000 to 3,000 rpm) two or three times
under no load, then run engine at idle speed.
6.
Check CO%.
OK or NG
OK
>> GO TO 28.
NG
>> GO TO 27.
26.
CHECK CO%
Without CONSULT-II
1.
Start engine and warm it up until engine coolant temperature indicator points to the middle of gauge.
2.
Turn ignition switch OFF.
3.
Disconnect engine coolant temperature sensor harness connector.
4.
Connect a resistor (4.4 k
Ω
) between terminals of engine coolant
temperature sensor harness connector.
5.
Start engine and rev it (2,000 to 3,000 rpm) two or three times
under no load, then run engine at idle speed.
6.
Check CO%.
7.
After checking CO%, turn ignition switch OFF, disconnect the
resistor from the terminals of engine coolant temperature sensor
harness connector, and then connect engine coolant tempera-
ture sensor harness connector to engine coolant temperature
sensor.
OK or NG
OK
>> GO TO 28.
NG
>> GO TO 27.
27.
RECONNECT AIR FUEL RATIO (A/F) SENSOR 1 HARNESS CONNECTOR
1.
Turn ignition switch OFF.
2.
Reconnect A/F sensor 1 harness connector.
>> GO TO 31.
28.
REPLACE AIR FUEL RATIO (A/F) SENSOR 1
1.
Stop engine.
2.
Replace A/F sensor 1 on the malfunctioning bank.
With CONSULT-II>>GO TO 29.
Without CONSULT-II>>GO TO 30.
Idle CO: 0.7
−
9.9% and engine runs smoothly.
SEF172Y
Idle CO: 0.7
−
9.9% and engine runs smoothly.
SEF982UA
EC-42
BASIC SERVICE PROCEDURE
Revision: 2004 November
2004 Murano
29.
CHECK AIR FUEL RATIO (A/F) SENSOR 1 FUNCTION
With CONSULT-II
1.
Turn ignition switch OFF and wait at a least 10 seconds.
2.
Start engine and warm it up to normal operating temperature.
3.
Drive the vehicle at a speed of 80 km/h (50 MPH) for a few minutes in D position.
NOTE:
Keep the accelerator pedal as steady as possible during the cruising.
4.
Then release the accelerator pedal fully until the vehicle speed decreases to 50 km/h (30 MPH).
NOTE:
Never apply brake during releasing the accelerator pedal.
5.
Repeat steps 3 to 4 for 5 times.
6.
Stop the vehicle and connect CONSULT-II to the vehicle.
7.
Make sure that no (1st trip) DTC is displayed in “SELF-DIAG RESULTS” mode.
OK or NG
OK
>> GO TO 4.
NG
>> GO TO 31.
30.
CHECK AIR FUEL RATIO (A/F) SENSOR 1 FUNCTION
With GST
1.
Turn ignition switch OFF and wait at a least 10 seconds.
2.
Start engine and warm it up to normal operating temperature.
3.
Drive the vehicle at a speed of 80 km/h (50 MPH) for a few minutes in D position.
NOTE:
Keep the accelerator pedal as steady as possible during the cruising.
4.
Then release the accelerator pedal fully until the vehicle speed decreases to 50 km/h (30 MPH).
NOTE:
Never apply brake during releasing the accelerator pedal.
5.
Repeat steps 3 to 4 for 5 times.
6.
Stop the vehicle and connect GST to the vehicle.
7.
Make sure that no (1st trip) DTC is displayed.
OK or NG
OK
>> GO TO 4.
NG
>> GO TO 31.
31.
DETECT MALFUNCTIONING PART
Check the following.
●
Check fuel pressure regulator, and repair or replace if necessary. Refer to
.
●
Check mass air flow sensor and its circuit, and repair or replace if necessary. Refer to
and
●
Check injector and its circuit, and repair or replace if necessary. Refer to
.
●
Check engine coolant temperature sensor and its circuit, and repair or replace if necessary. Refer to
OK or NG
OK
>> GO TO 33.
NG
>> 1. Repair or replace.
2. GO TO 32.
BASIC SERVICE PROCEDURE
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32.
ERASE UNNECESSARY DTC
After this inspection, unnecessary DTC might be displayed.
Erase the stored memory in ECM and TCM. Refer to
>> GO TO 4.
33.
CHECK ECM FUNCTION
1.
Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but
this is a rare case.)
2.
Perform initialization of NVIS (NATS) system and registration of all NVIS (NATS) ignition key IDs. Refer to
BL-122, "ECM Re-communicating Function"
.
>> GO TO 4.
Accelerator Pedal Released Position Learning
ABS004AI
DESCRIPTION
Accelerator Pedal Released Position Learning is an operation to learn the fully released position of the accel-
erator pedal by monitoring the accelerator pedal position sensor output signal. It must be performed each time
harness connector of accelerator pedal position sensor or ECM is disconnected.
OPERATION PROCEDURE
1.
Make sure that accelerator pedal is fully released.
2.
Turn ignition switch ON and wait at least 2 seconds.
3.
Turn ignition switch OFF and wait at least 10 seconds.
4.
Turn ignition switch ON and wait at least 2 seconds.
5.
Turn ignition switch OFFand wait at least 10 seconds.
Throttle Valve Closed Position Learning
ABS004AJ
DESCRIPTION
Throttle Valve Closed Position Learning is an operation to learn the fully closed position of the throttle valve by
monitoring the throttle position sensor output signal. It must be performed each time harness connector of
electric throttle control actuator or ECM is disconnected.
OPERATION PROCEDURE
1.
Make sure that accelerator pedal is fully released.
2.
Turn ignition switch ON.
3.
Turn ignition switch OFF wait at least 10 seconds.
Make sure that throttle valve moves during above 10 seconds by confirming the operating sound.
Idle Air Volume Learning
ABS004AK
DESCRIPTION
Idle Air Volume Learning is an operation to learn the idle air volume that keeps each engine within the specific
range. It must be performed under any of the following conditions:
●
Each time electric throttle control actuator or ECM is replaced.
●
Idle speed or ignition timing is out of specification.
PREPARATION
Before performing Idle Air Volume Learning, make sure that all of the following conditions are satisfied.
Learning will be cancelled if any of the following conditions are missed for even a moment.
●
Battery voltage: More than 12.9V (At idle)
●
Engine coolant temperature: 70 - 100
°
C (158 - 212
°
F)
●
PNP switch: ON
●
Electric load switch: OFF
(Air conditioner, headlamp, rear window defogger)
EC-44
BASIC SERVICE PROCEDURE
Revision: 2004 November
2004 Murano
On vehicles equipped with daytime light systems, if the parking brake is applied before the engine
is start the headlamp will not be illuminated.
●
Steering wheel: Neutral (Straight-ahead position)
●
Vehicle speed: Stopped
●
Transmission: Warmed-up
For models with CONSULT-II, drive vehicle until “FLUID TEMP SE” in “DATA MONITOR” mode of “CVT”
system indicates less than 0.9V.
For models without CONSULT-II, drive vehicle for 10 minutes.
OPERATION PROCEDURE
With CONSULT-II
1.
Perform
EC-43, "Accelerator Pedal Released Position Learning"
.
2.
Perform
EC-43, "Throttle Valve Closed Position Learning"
3.
Start engine and warm it up to normal operating temperature.
4.
Check that all items listed under the topic PREPARATION (previously mentioned) are in good order.
5.
Select “IDLE AIR VOL LEARN” in “WORK SUPPORT” mode.
6.
Touch “START” and wait 20 seconds.
7.
Make sure that “CMPLT” is displayed on CONSULT-II screen. If
“CMPLT” is not displayed, Idle Air Volume Learning will not be
carried out successfully. In this case, find the cause of the inci-
dent by referring to the Diagnostic Procedure below.
8.
Rev up the engine two or three times and make sure that idle
speed and ignition timing are within the specifications.
Without CONSULT-II
NOTE:
●
It is better to count the time accurately with a clock.
●
It is impossible to switch the diagnostic mode when an accelerator pedal position sensor circuit
has a malfunction.
1.
Perform
EC-43, "Accelerator Pedal Released Position Learning"
.
SEF217Z
SEF454Y
ITEM
SPECIFICATION
Idle speed
650
±
50 rpm (in P or N position)
Ignition timing
15
±
5
°
BTDC (in P or N position)
MBIB0238E
BASIC SERVICE PROCEDURE
EC-45
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2.
Perform
EC-43, "Throttle Valve Closed Position Learning"
3.
Start engine and warm it up to normal operating temperature.
4.
Check that all items listed under the topic PREPARATION (previously mentioned) are in good order.
5.
Turn ignition switch OFF and wait at least 10 seconds.
6.
Confirm that accelerator pedal is fully released, turn ignition switch ON and wait 3 seconds.
7.
Repeat the following procedure quickly five times within 5 seconds.
a.
Fully depress the accelerator pedal.
b.
Fully release the accelerator pedal.
8.
Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 20 seconds until the MIL stops
blinking and turned ON.
9.
Fully release the accelerator pedal within 3 seconds after the MIL turned ON.
10. Start engine and let it idle.
11. Wait 20 seconds.
12. Rev up the engine two or three times and make sure that idle speed and ignition timing are within the
specifications.
13. If idle speed and ignition timing are not within the specification, Idle Air Volume Learning will not be carried
out successfully. In this case, find the cause of the incident by referring to the DIAGNOSTIC PROCE-
DURE below.
DIAGNOSTIC PROCEDURE
If idle air volume learning cannot be performed successfully, proceed as follows:
1.
Check that throttle valve is fully closed.
2.
Check PCV valve operation.
3.
Check that downstream of throttle valve is free from air leakage.
4.
When the above three items check out OK, engine component parts and their installation condi-
tion are questionable. Check and eliminate the cause of the incident.
It is useful to perform
EC-126, "TROUBLE DIAGNOSIS - SPECIFICATION VALUE"
5.
If any of the following conditions occur after the engine has started, eliminate the cause of the
incident and perform “Idle air volume learning” all over again:
●
Engine stalls.
●
Erroneous idle.
Fuel Pressure Check
ABS004AL
FUEL PRESSURE RELEASE
With CONSULT-II
1.
Turn ignition switch ON.
ITEM
SPECIFICATION
Idle speed
650
±
50 rpm (in P or N position)
Ignition timing
15
±
5
°
BTDC (in P or N position)
SEC897C
EC-46
BASIC SERVICE PROCEDURE
Revision: 2004 November
2004 Murano
2.
Perform “FUEL PRESSURE RELEASE” in “WORK SUPPORT”
mode with CONSULT-II.
3.
Start engine.
4.
After engine stalls, crank it two or three times to release all fuel
pressure.
5.
Turn ignition switch OFF.
Without CONSULT-II
1.
Remove fuel pump fuse located in IPDM E/R.
2.
Start engine.
3.
After engine stalls, crank it two or three times to release all fuel
pressure.
4.
Turn ignition switch OFF.
5.
Reinstall fuel pump fuse after servicing fuel system.
FUEL PRESSURE CHECK
CAUTION:
Before disconnecting fuel line, release fuel pressure from fuel line to eliminate danger.
NOTE:
Prepare pans or saucers under the disconnected fuel line because the fuel may spill out. The fuel pres-
sure cannot be completely released because Z50 models do not have fuel return system.
Use Fuel Pressure Gauge Kit (J-44321) to check fuel pressure.
1.
Release fuel pressure to zero. Refer to
EC-45, "FUEL PRESSURE RELEASE"
2.
Install the inline fuel quick disconnected fitting between fuel
damper and injector tube.
3.
Connect the fuel pressure test gauge (quick connector adapter
hose) to the inline fuel quick disconnected fitting.
4.
Turn ignition switch ON and check for fuel leakage.
5.
Start engine and check for fuel leakage.
6.
Read the indication of fuel pressure gauge.
7.
If result is unsatisfactory, go to next step.
8.
Check the following.
●
Fuel hoses and fuel tubes for clogging
●
Fuel filter for clogging
●
Fuel pump
●
Fuel pressure regulator for clogging
If OK, replace fuel pressure regulator.
If NG, repair or replace.
SEF214Y
PBIB2087E
At idling:
Approximately 350 kPa (3.57 kg/cm
2
, 51 psi)
PBIB1376E
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