NO.26 EXHAUST SULPHUR SMELL [MZR 2.0 DISI i-stop]

id0103d3803200

26

EXHAUST SULPHUR SMELL
DESCRIPTION
•  Rotten egg smell (sulphur) from exhaust.
POSSIBLE CAUSE
•  Electrical connectors are disconnected or connected poorly.
•  Vacuum lines are disconnected or connected improperly.
•  Poor fuel quality
•  PCM DTC is stored.
•  Inadequate fuel pressure
―  Fuel pressure sensor or related circuit malfunction
―  High pressure fuel pump malfunction
―  Spill valve control solenoid valve control circuit malfunction (damage to driver in PCM caused by short circuit to ground system)
―  Spill valve control solenoid valve (built-in high pressure fuel pump) malfunction
―  Relief valve (built-in fuel delivery pipe) malfunction
•  Charcoal canister malfunction
•  Fuel tank vent system malfunction
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 2.0 DISI i-stop].) (See AFTER SERVICE PRECAUTION [MZR 2.0 DISI i-stop].)
Caution
•  Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and 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 driveability or exhaust smoke concerns present?
Yes
Go to the applicable symptom troubleshooting.
(See SYMPTOM DIAGNOSTIC INDEX [MZR 2.0 DISI i-stop].)
No
Go to the next step.
2
Inspect for the following:
•  Electrical connections
•  Vacuum lines
•  Fuel quality
Is there any malfunction?
Yes
Service if necessary.
•  Repeat this step.
No
Go to the next step.
3
Connect the M-MDS to the DLC-2.
Switch the ignition to ON (engine off).
Retrieve any DTCs using the M-MDS.
(See ON-BOARD DIAGNOSTIC TEST [MZR 2.0 DISI i-stop].)
Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [MZR 2.0 DISI i-stop].)
No
Go to the next step.
4
Access the FUEL_PRES PID using the M-MDS.
(See ON-BOARD DIAGNOSTIC TEST [MZR 2.0 DISI i-stop].)
Is the FUEL_PRES PID value within the specification?
(See PCM INSPECTION [MZR 2.0 DISI i-stop].)
Yes
Go to Step 9.
No
Go to the next step.
5
Is the vehicle accelerate performance normally?
Yes
Go to the next step.
No
Go to Step 7.
6
Inspect the fuel pressure sensor.
(See FUEL PRESSURE SENSOR INSPECTION [MZR 2.0 DISI i-stop].)
Is there any malfunction?
Yes
Replace the fuel delivery pipe.
(See FUEL INJECTOR REMOVAL/INSTALLATION [MZR 2.0 DISI i-stop].)
No
Go to Step 9.
7
Switch the ignition to off.
Disconnect the high pressure fuel pump and PCM connectors.
Inspect for continuity between high pressure fuel pump terminal A (wiring harness-side) and body ground.
Is there continuity?
Yes
Repair or replace the wiring harness for a possible short to ground.
•  If the malfunction remains:
―  Replace the PCM. (Damage to driver in PCM)
No
Go to the next step.
8
Replace the high pressure fuel pump.
(See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [MZR 2.0 DISI i-stop].)
Access the FUEL_PRES PID using the M-MDS.
(See ON-BOARD DIAGNOSTIC TEST [MZR 2.0 DISI i-stop].)
Is the FUEL_PRES PID value within the specification?
(See PCM INSPECTION [MZR 2.0 DISI i-stop].)
Yes
High pressure fuel pump or spill valve control solenoid valve (built-in high pressure pump) malfunction.
•  Symptom troubleshooting is completed.
•  Go to Step 10.
No
Relief valve (built-in fuel delivery pipe) malfunction.
•  Replace the fuel delivery pipe.
9
Inspect the charcoal canister for fuel saturation.
(See CHARCOAL CANISTER INSPECTION [MZR 2.0 DISI i-stop].)
Is the excess amount of liquid fuel present in canister?
Yes
Replace the charcoal canister.
(See CHARCOAL CANISTER REMOVAL/INSTALLATION [MZR 2.0 DISI i-stop].)
No
Inspect the fuel tank vent system.
•  If the fuel tank vent system is normal:
―  Suggest trying a different brand since sulfur content can vary in different fuels.
•  If fuel tank vent system is not normal:
―  Repair or replace the malfunctioning parts according to the inspection results.
10
Verify the test results.
•  If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [MZR 2.0 DISI i-stop].)
•  If a malfunction remains, inspect the related Service Information and perform the repair or diagnosis.
―  If the vehicle is repaired, troubleshooting is completed.
―  If the vehicle is not repaired or additional diagnostic information is not available, replace the PCM. (See PCM REMOVAL/INSTALLATION [MZR 2.0 DISI i-stop].)