Diagnostic procedure
WARNING: This page is about a different car, the 2005 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
NO. 26 EXHAUST SULPHUR SMELL [AJ] DIAGNOSTIC PROCEDURE
| STEP |
INSPECTION |
ACTION |
| 1 |
- Are any driveability or exhaust smoke concerns present?
|
Yes |
Go to appropriate flow chart. |
| No |
Go to the next step. |
| 2 |
- Inspect the following:
- Electrical connections
- Vacuum lines
- Fuel quality
- Are all items okay?
|
Yes |
Go to the next step. |
| No |
Service as necessary.
Repeat Step 2. |
| 3 |
- Connect WDS or equivalent to DLC-2.
- Turn ignition switch to ON position (Engine OFF).
- Retrieve any DTC.
- Are there any DTCs displayed?
|
Yes |
DTC is displayed:
- Go to appropriate DTC test.
|
| No |
No DTC is displayed:
|
| 4 |
|
Yes |
Go to the next step. |
| No |
Zero or low:
- Inspect fuel pump relay and fuel pump circuit.
- Inspect for clogged fuel line.
High:
|
| 5 |
- Inspect charcoal canister for fuel saturation.
- Is excess amount of liquid fuel present in canister?
|
Yes |
Replace charcoal canister. |
| No |
Inspect fuel tank vent system.
- If fuel tank vent system is okay, since sulfur content can vary in different fuels, try a different brand.
- If fuel tank vent system is not okay, repair or replace malfunctioning part.
|
| 6 |
- Verify test results.
- If okay, return to diagnostic index to service any additional symptoms.
- If malfunction remains, inspect related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis.
- If vehicle is repaired, troubleshooting completed.
- If vehicle is not repaired or additional diagnostic information is not available, reprogram PCM if later calibration is available. Retest.
|