NO.20 FUEL ODOR (IN ENGINE COMPARTMENT) [WL-C, WE-C]

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 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.

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 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.

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 [WL-C, WE-C].) Is the fuel pressure normal?	Yes	Go to the next step.
No	Repair or replace if necessary.
4	Perform the self-test function using the M-MDS. Turn the engine switch to the ON position (Engine off). Retrieve any DTCs. Are any DTCs displayed?	Yes	DTC is displayed: Go to the appropriate DTC test. (See DTC TABLE [WL-C, WE-C (Thailand, General (L.H.D. R.H.D.) specs.)].) Communication error message is displayed: Inspect the following: • Open circuit between main relay and PCM terminal 201, 203, 205 • Open circuit main relay and PCM terminal 219 • Main relay stuck open • Open or poor ground circuit (PCM terminal 202, 204, 206) • Poor connection to vehicle body ground
No	No DTC is displayed: Remove and inspect common rail.
5	Verify test results. • If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [WL-C, WE-C].) • 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.

STEP

INSPECTION

RESULTS

ACTION

Visually inspect for fuel leakage at the fuel injector and fuel line.

Is there any fuel leakage?

Yes

Service if necessary.

Go to the next step.

Visually inspect for a damaged or cracked fuel filter.

Is the fuel filter normal?

Yes

Go to the next step.

Replace the fuel filter.

Inspect the fuel pressure sensor.

(See FUEL PRESSURE SENSOR INSPECTION [WL-C, WE-C].)

Is the fuel pressure normal?

Yes

Go to the next step.

Repair or replace if necessary.

Perform the self-test function using the M-MDS.

Turn the engine switch to the ON position (Engine off).

Retrieve any DTCs.

Are any DTCs displayed?

Yes

DTC is displayed:

Go to the appropriate DTC test.

(See DTC TABLE [WL-C, WE-C (Thailand, General (L.H.D. R.H.D.) specs.)].)

Communication error message is displayed:

Inspect the following:

• Open circuit between main relay and PCM terminal 201, 203, 205

• Open circuit main relay and PCM terminal 219

• Main relay stuck open

• Open or poor ground circuit (PCM terminal 202, 204, 206)

• Poor connection to vehicle body ground

No DTC is displayed:

Remove and inspect common rail.

Verify test results.

• If normal, return to the diagnostic index to service any additional symptoms.

(See SYMPTOM DIAGNOSTIC INDEX [WL-C, WE-C].)

• 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.