NO.22 FUEL ODOR (IN ENGINE COMPARTMENT) [MZR-CD (RF Turbo)]

id0103f1822000

22

FUEL ODOR (IN ENGINE COMPARTMENT)
DESCRIPTION
•  Fuel smell or visible leakage.
POSSIBLE CAUSE
•  Excessive fuel pressure
•  Suction control valve malfunction (built-in supply pump)
•  Fuel pressure limiter malfunction (built-in common rail)
•  Fuel pressure sensor or related circuit malfunction
•  Fuel leakage
Warning
The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services:
•  Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel.
•  Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injury or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete “BEFORE REPAIR PROCEDURE” and “AFTER REPAIR PROCEDURE” described in this manual.

Diagnostic Procedure

STEP

INSPECTION

RESULTS

ACTION
1
Visually inspect for fuel leakage at the fuel injector and fuel line.
Is there any fuel leakage?
Yes
Service if necessary.
No
Go to the next step.
2
Visually inspect for a damaged or cracked fuel filter.
Is the fuel filter normal?
Yes
Go to the next step.
No
Replace the fuel filter.
3
Inspect the fuel pressure sensor.
(See FUEL PRESSURE SENSOR INSPECTION [MZR-CD (RF Turbo)].)
Is the fuel pressure normal?
Yes
Go to the next step.
No
Repair or replace if necessary.
4
Inspect the suction control valve.
(See SUCTION CONTROL VALVE INSPECTION [MZR-CD (RF Turbo)].)
Is the suction control valve normal?
Yes
Go to the next step.
No
Replace the supply pump.
(See SUPPLY PUMP REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)
5
Perform the self-test function using the M-MDS.
Turn the engine switch to the ON position.
Retrieve any DTCs.
Are any DTCs displayed?
Yes
DTC is displayed:
Go to the appropriate DTC test.
(See DTC TABLE [MZR-CD (RF Turbo)].)
Communication error message is displayed:
Inspect the following:
•  Open circuit between PCM control relay and PCM terminal 119 or 120
•  Open circuit PCM control relay and PCM terminal 105
•  PCM control relay stuck open
•  Open or poor ground circuit (PCM terminal 1, 2, 3, 114 or 117)
•  Poor connection to vehicle body ground
No
No DTC is displayed:
Remove and inspect common rail.
6
Verify test results.
•  If normal, return to the diagnostic index to service any additional symptoms.
•  If the malfunction remains, inspect the related Service Information and perform repair or diagnosis.
―  If the vehicle is repaired, troubleshooting completed.
―  If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if later calibration is available. Retest.