Mazda 3 - 26 Exhaust Sulphur Smell [Lf]

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
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613
Does A/C compressor disengage
when the A/C switch is turned off?
No
Go to symptom troubleshooting "No.24 A/C is
always on or A/C compressor runs
continuously".
(See NO.24 A/C IS ALWAYS ON OR A/C
COMPRESSOR RUNS CONTINUOUSLY
[LF].)
2
Connect the WDS or equivalent to the
DLC-2.
Retrieve any continuous memory,
KOEO and KOER DTCs using WDS or
equivalent.
Are there any DTCs displayed?
Yes
DTC is displayed:
Go to the appropriate DTC inspection.
(See DTC TABLE [LF].)
No
No DTC is displayed:
Inspect TP sensor for proper adjustment.
(See THROTTLE POSITION (TP) SENSOR
INSPECTION [LF].)
3
Verify test results.
• If normal, return to diagnostic index to service any additional symptoms.
(See ENGINE SYMPTOM TROUBLESHOOTING [LF].)
• If malfunction remains, inspect related Service information perform repair or diagnosis.
- If vehicle repaired, troubleshooting completed.
- If vehicle not repaired or additional diagnostic information not available, replace the
PCM.
(See PCM REMOVAL/INSTALLATION [LF].)
NO.26 EXHAUST SULPHUR SMELL [LF]
B3E010318881W28
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
Warning
The following troubleshooting flow chart contains fuel system diagnosis and repair
procedures. Read following warnings before performing fuel system services: