NO.22 FUEL ODOR (IN ENGINE COMPARTMENT) [MZR-CD 2.2]

id0103f3822000

22

FUEL ODOR (IN ENGINE COMPARTMENT)
DESCRIPTION
•  Fuel smell or visible leakage.
POSSIBLE CAUSE
•  Excessive fuel pressure
―  Fuel pressure sensor or related circuit malfunction
―  Fuel pressure limiter malfunction (built-in common rail)
―  Suction control valve malfunction (built-in supply pump)
•  Fuel leakage
•  Fuel filter damaged or cracks
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 SERVICE PRECAUTION” and “AFTER SERVICE PRECAUTION” described in this manual. (See BEFORE SERVICE PRECAUTION [MZR-CD 2.2].) (See AFTER SERVICE PRECAUTION [MZR-CD 2.2].)

Diagnostic Procedure

STEP

INSPECTION

RESULTS

ACTION
1
Visually inspect for fuel leakage at the fuel injector and fuel line.
Is there any leakage?
Yes
Repair or replace the malfunctioning part according to the inspection results.
No
Go to the next step.
2
Visually inspect for fuel leakage at the fuel pump (water heater system).
Is there any leakage?
Yes
Repair or replace the malfunctioning part according to the inspection results.
No
Go to the next step.
3
Visually inspect for a damaged or cracked fuel filter.
Is there any malfunction?
Yes
Replace the fuel filter.
(See FUEL FILTER COMPONENT REMOVAL/INSTALLATION [MZR-CD 2.2].)
No
Go to the next step.
4
Inspect the fuel pressure sensor.
(See FUEL PRESSURE SENSOR INSPECTION [MZR-CD 2.2].)
Is there any malfunction?
Yes
Replace the common rail.
(See COMMON RAIL REMOVAL/INSTALLATION [MZR-CD 2.2].)
No
Go to the next step.
5
Inspect the suction control valve.
(See SUCTION CONTROL VALVE INSPECTION [MZR-CD 2.2].)
Is there any malfunction?
Yes
Replace the supply pump.
(See SUPPLY PUMP REMOVAL/INSTALLATION [MZR-CD 2.2].)
No
Go to the next step.
6
Perform the KOEO or KOER self test.
(See KOEO/KOER SELF TEST [MZR-CD 2.2].)
Are any DTCs displayed?
Yes
DTC is displayed:
•  Go to the applicable DTC inspection.
Communication error message is displayed:
•  Open circuit in wiring harness between main relay terminal E and PCM terminal 2I
•  Open circuit in wiring harness between main relay terminal C and PCM terminals 2C, 2F
•  Main relay is stuck open.
•  Open or poor ground circuit (PCM terminals 2A, 2B, 2D and 2E)
•  Poor connection of vehicle body ground
No
Remove the common rail.
(See COMMON RAIL REMOVAL/INSTALLATION [MZR-CD 2.2].)
Inspect the common rail.
(See COMMON RAIL INSPECTION [MZR-CD 2.2].)
Repair or replace the malfunctioning part according to the inspection results.
7
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 the repair or diagnosis.
―  If the vehicle is repaired, troubleshooting is completed.
―  If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest.