NO.26 EXHAUST SULPHUR SMELL [LF, L5]

id010397803200

26

EXHAUST SULPHUR SMELL
DESCRIPTION
•  Rotten egg smell (sulphur) from exhaust.
POSSIBLE CAUSE
•  Electrical connectors are disconnected or connected poorly
•  Charcoal canister malfunction
•  Vacuum lines are disconnected or connected improperly.
•  Improper fuel pressure
•  Poor fuel quality
•  PCM malfunction
Warning
The following troubleshooting flow chart contains fuel system diagnosis and repair procedures. Read following warnings before servicing fuel system:
•  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 injuries 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 [LF, L5].) (See AFTER SERVICE PRECAUTION [LF, L5].)
Caution
•  Disconnecting/connecting the quick release connector without cleaning it may cause damage to the fuel pipe and the quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.

Diagnostic procedure

STEP

INSPECTION

RESULTS

ACTION
1
Are any drivability or exhaust smoke concerns present?
Yes
Go to the appropriate symptom troubleshooting.
(See QUICK DIAGNOSTIC CHART [LF, L5].)
No
Go to the next step.
2
Inspect the following:
•  Electrical connections
•  Vacuum lines
•  Fuel quality
Are all items normal?
Yes
Go to the next step.
No
Repair or replace the malfunctioning part according to the inspection results.
Repeat Step 2.
3
Connect the M-MDS to the DLC-2.
Switch the ignition to ON (engine off).
Retrieve any DTCs.
(See ON-BOARD DIAGNOSTIC TEST [LF, L5].)
Are any DTCs present?
Yes
Go to the appropriate DTC inspection.
(See DTC TABLE [LF, L5].)
No
Go to the next step.
4
Inspect the fuel line pressure.
(See FUEL LINE PRESSURE INSPECTION [LF, L5].)
Is the fuel line pressure correct?
Yes
Go to the next step.
No
Low:
•  Inspect the following:
―  Fuel pump relay and the fuel pump circuit
―  Fuel line for clogging
•  If there is a malfunction, repair or replace the malfunctioning part according to the inspection results.
•  If there is no malfunction, replace the fuel pump unit.
High:
•  Replace the fuel pump unit.
5
Inspect the charcoal canister for fuel saturation.
Is an excess amount of liquid fuel present in the canister?
Yes
Replace the charcoal canister.
No
Inspect the fuel tank vent system.
•  If the fuel tank vent system is normal:
―  Suggest trying a different brand since the sulfur content can vary in different fuels.
•  If the fuel tank vent system is not normal:
―  Repair or replace the malfunctioning part according to the inspection results.
6
•  Verify the test results.
―  If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [LF, L5].)
―  If a malfunction remains, inspect the related Service Information perform repair or diagnosis.
•  If the vehicle repaired, troubleshooting is completed.
•  If the vehicle not repaired or additional diagnostic information not available, replace the PCM. (See PCM REMOVAL/INSTALLATION [LF, L5].)