NO.20 FUEL ODOR (IN ENGINE COMPARTMENT) [MZR-CD (RF Turbo)]


20	FUEL ODOR (IN ENGINE COMPARTMENT)
DESCRIPTION	• Fuel smell or visible leakage.
POSSIBLE CAUSE	• Excessive fuel pressure • Fuel pressure limiter malfunction (built-in common rail) • 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 SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" described in this manual. (See BEFORE SERVICE PRECAUTION [MZR-CD (RF Turbo)].) (See AFTER SERVICE PRECAUTION [MZR-CD (RF Turbo)].)


STEP	INSPECTION	RESULTS	ACTION
1	Visually inspect fuel leakage at the fuel injector and fuel line. Is there fuel leakage?	Yes	Service if necessary.
1		No	Go to the next step.
2	Visually inspect for the damaged or cracked fuel filter. Is the fuel filter normal?	Yes	Go to the next step.
2		No	Replace the fuel filter.
3	Inspect the fuel injector. (See FUEL INJECTOR INSPECTION [MZR-CD (RF Turbo)].) Is the fuel injector normal?	Yes	Go to the next step.
3		No	Repair or replace if necessary.
4	Perform self-test function using the WDS or equivalent. Turn the engine switch to the ON position. Retrieve any DTC. Is DTC displayed?	Yes	DTC is displayed: Go to the applicable DTC inspection. (See DTC TABLE [MZR-CD (RF Turbo)].) Communication error message is displayed: Inspect for the following: • Open circuit between PCM control relay and PCM terminal 53 or 79 • Open circuit PCM control relay and PCM terminal 69 • PCM control relay stuck open • Open or poor GND circuit (PCM terminal 65, 85, 103 or 104) • Poor connection vehicle body GND
4		No	No DTC is displayed: Remove and inspect the common rail.
5	Verify test results. • If normal, return to diagnostic index to service any additional symptoms. • If malfunction remains, replace the PCM. (See PCM REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)