Engine Symptom Diagnosis
Precautions: General safety (00)
Perform troubleshooting referring to the followings when ECM has detected no DTC and no abnormality has been found in Visual Inspection:D16AA and Engine Basic Inspection:D16AA.
| Condition | Correction / Reference Item |
|---|---|
| Hard starting (Engine can be cranked) | Refer to Hard Starting (Engine Can Be Cranked). |
| Engine not running smoothly | Refer to Engine Not Running Smoothly. |
| Engine does not produce best performance | Refer to Engine Does Not Produce Best Performance. |
| Engine hesitates-momentary lack of response as accelerator is depressed | Refer to Engine Hesitates – Momentary Lack of Response as Accelerator Is Depressed. |
| Improper engine idle or engine stops at idle | Refer to Improper Engine Idling or Engine Stops at Idle. |
| Engine cuts out whilst driving | Refer to Engine Cuts Out whilst Driving. |
| Engine knocking | Refer to Engine Knocking. |
| White exhaust fumes | Refer to White Exhaust Fumes. |
| Black exhaust fumes | Refer to Black Exhaust Fumes. |
| Excessive exhaust fumes | Refer to Excessive Exhaust Fumes. |
| Excessive engine oil level | Refer to Engine Oil Excessive Level. |
| Poor fuel mileage | Refer to Poor Fuel Mileage. |
| Excessive engine oil consumption | Refer to Engine Oil Excessive Consumption. |
Hard Starting (Engine Can Be Cranked)
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Preliminary check
1)Check the following points.
•Check that engine oil level is correct.
 •Check that air intake / turbocharger circuit is working properly. •Check that main and circuit fuses have not blown. •Check fuel heater. •Wiring on engine correctly connected to ground. •Battery correctly connected to ground. •Battery positive (+) cable and all leads are firmly connected. Is check result OK?
|
Go to Step 2.
|
Repair or replace defective part(s).
|
| 2 |
Environmental parameter check
1)When ignition is “OFF”, connect SUZUKI scan tool to DLC.
2)Check the values of the following parameters.
•Battery Voltage
•Accel Position •APP Sensor 1 Volt •APP Sensor 2 Volt •Barometric Pressure •Fuel Temperature •Fuel Rail Pressure •EGR-1 Valve Opening •EGR-2 Valve Opening Is check result OK?
|
Go to Step 3.
|
Check systems showing abnormal parameter.
|
| 3 |
Glow plug control module and its circuit check
1)Check that glow plugs are working properly.
Is check result OK?
|
Go to Step 4.
|
Repair or replace defective part(s).
|
| 4 |
Low fuel pressure circuit check
1)Check low fuel pressure circuit.
Is check result OK?
|
Go to Step 5.
|
Repair or replace defective part(s).
|
| 5 |
High fuel pressure circuit check
1)Check high fuel pressure circuit.
Is check result OK?
|
Go to Step 6.
|
Repair or replace defective part(s).
|
| 6 |
Lubrication system check
1)Check lubrication system is working properly.
Is check result OK?
|
Go to Step 7.
|
Repair or replace defective part(s).
|
| 7 |
Cylinder compression check
1)Perform cylinder compression check.
Is check result OK?
|
Go to Step 8.
|
Cylinder compression is insufficient. Repair or replace defective part(s).
|
| 8 |
Timing check
1)Check that valve timing is correct referring to “Installation” under Timing Belt, Belt Tensioner and Idler Pulley Removal and Installation:D16AA.
Is check result OK?
|
Go to Step 9.
|
Valve timing is not correct. Adjust valve timing referring to “Installation” under Timing Belt, Belt Tensioner and Idler Pulley Removal and Installation:D16AA.
|
| 9 |
Combustion chamber check
1)Check combustion chamber for excessive deposits.
•Valve:
•Cylinder head: •Piston: Is check result OK?
|
Go to Step 10.
|
Repair or replace defective part(s).
|
| 10 |
Valve spring and hydraulic valve adjuster check
1)Check valve spring and hydraulic valve adjuster.
Is check result OK?
|
End.
|
Repair or replace defective part(s).
|
Engine Not Running Smoothly
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Preliminary check
1)Check the following points.
•Check that engine oil level is correct.
•Check that air intake / turbocharger circuit is working properly. •Check that main and circuit fuses have not blown. Is check result OK?
|
Go to Step 2.
|
Repair or replace defective part(s).
|
| 2 |
Environmental parameter check
1)When ignition is “OFF”, connect SUZUKI scan tool to DLC.
2)Check the values of the following parameters.
•Battery Voltage
•Accel Position •APP Sensor 1 Volt •APP Sensor 2 Volt •Barometric Pressure •Fuel Temperature •Fuel Rail Pressure •EGR-1 Valve Opening •EGR-2 Valve Opening Is check result OK?
|
Go to Step 3.
|
Check systems showing abnormal parameter.
|
| 3 |
Low fuel pressure circuit check
1)Check low fuel pressure circuit.
Is check result OK?
|
Go to Step 4.
|
Repair or replace defective part(s).
|
| 4 |
High fuel pressure circuit check
1)Check high fuel pressure circuit.
Is check result OK?
|
Go to Step 5.
|
Repair or replace defective part(s).
|
| 5 |
Vehicle speed signal check
1)Check that vehicle speed signal is correct.
Is check result OK?
|
Go to Step 6.
|
Repair or replace defective part(s).
|
| 6 |
A/C system check
1)Check that A/C system is working properly.
•Manual A/C model:
•Auto A/C model: Is check result OK?
|
Go to Step 7.
|
Repair or replace defective part(s).
|
| 7 |
Glow plug control module and its circuit check
1)Check that glow plugs are working properly.
Is check result OK?
|
Go to Step 8.
|
Repair or replace defective part(s).
|
| 8 |
EGR-1 valve check
1)Check EGR-1 valve operation.
Is check result OK?
|
Go to Step 9.
|
Repair or replace defective part(s).
|
| 9 |
EGR-2 valve check
1)Check EGR-2 valve operation.
Is check result OK?
|
Go to Step 10.
|
Repair or replace defective part(s).
|
| 10 |
Inlet throttle valve operation check
1)Check inlet throttle valve operation.
Is check result OK?
|
Go to Step 11.
|
Repair or replace defective part(s).
|
| 11 |
Turbocharger system check
1)Check turbocharger system is working properly.
Is check result OK?
|
Go to Step 12.
|
Repair or replace defective part(s).
|
| 12 |
Turbocharger actuator operation check
1)Check turbocharger actuator operation.
Is check result OK?
|
Go to Step 13.
|
Repair or replace defective part(s).
|
| 13 |
Timing check
1)Check that valve timing is correct referring to “Installation” under Timing Belt, Belt Tensioner and Idler Pulley Removal and Installation:D16AA.
Is check result OK?
|
Go to Step 14.
|
Valve timing is not correct. Adjust valve timing referring to “Installation” under Timing Belt, Belt Tensioner and Idler Pulley Removal and Installation:D16AA.
|
| 14 |
Cylinder compression check
1)Perform cylinder compression check.
Is check result OK?
|
Go to Step 15.
|
Cylinder compression is insufficient. Repair or replace defective part(s).
|
| 15 |
Lubrication system check
1)Check lubrication system is working properly.
Is check result OK?
|
End.
|
Repair or replace defective part(s).
|
Engine Does Not Produce Best Performance
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Preliminary check
1)Check the following points.
•Check that engine oil level is correct.
•Check that air intake / turbocharger circuit is working properly. •Check that main and circuit fuses have not blown. Is check result OK?
|
Go to Step 2.
|
Repair or replace defective part(s).
|
| 2 |
Environmental parameter check
1)When ignition is “OFF”, connect SUZUKI scan tool to DLC.
2)Check the values of the following parameters.
•Battery Voltage
•Accel Position •APP Sensor 1 Volt •APP Sensor 2 Volt •Barometric Pressure •IAT1 •IAT2 •Fuel Temperature •Fuel Rail Pressure •EGR-1 Valve Opening •EGR-2 Valve Opening Is check result OK?
|
Go to Step 3.
|
Check systems showing abnormal parameter.
|
| 3 |
Low fuel pressure circuit check
1)Check low fuel pressure circuit.
Is check result OK?
|
Go to Step 4.
|
Repair or replace defective part(s).
|
| 4 |
High fuel pressure circuit check
1)Check high fuel pressure circuit.
Is check result OK?
|
Go to Step 5.
|
Repair or replace defective part(s).
|
| 5 |
Glow plug control module and its circuit check
1)Check that glow plugs are working properly.
Is check result OK?
|
Go to Step 6.
|
Repair or replace defective part(s).
|
| 6 |
EGR-1 valve check
1)Check EGR-1 valve operation.
Is check result OK?
|
Go to Step 7.
|
Repair or replace defective part(s).
|
| 7 |
EGR-2 valve check
1)Check EGR-2 valve operation.
Is check result OK?
|
Go to Step 8.
|
Repair or replace defective part(s).
|
| 8 |
Inlet throttle valve operation check
1)Check inlet throttle valve operation.
Is check result OK?
|
Go to Step 9.
|
Repair or replace defective part(s).
|
| 9 |
Brake light switch check
1)Check that brake light switch is working properly.
Is check result OK?
|
Go to Step 10.
|
Brake pedal does not return. Eliminate cause of sticking.
Switch stuck closed or wiring short circuit. Repair circuit or replace brake light switch.
|
| 10 |
Turbocharger actuator operation check
1)Check turbocharger actuator operation.
Is check result OK?
|
Go to Step 11.
|
Repair or replace defective part(s).
|
| 11 |
Turbocharger system check
1)Check turbocharger system is working properly.
Is check result OK?
|
Go to Step 12.
|
Repair or replace defective part(s).
|
| 12 |
Timing check
1)Check that valve timing is correct referring to “Installation” under Timing Belt, Belt Tensioner and Idler Pulley Removal and Installation:D16AA.
Is check result OK?
|
Go to Step 13.
|
Valve timing is not correct. Adjust valve timing referring to “Installation” under Timing Belt, Belt Tensioner and Idler Pulley Removal and Installation:D16AA.
|
| 13 |
Cylinder compression check
1)Perform cylinder compression check.
Is check result OK?
|
Go to Step 14.
|
Cylinder compression is insufficient. Repair or replace defective part(s).
|
| 14 |
Brake system check
1)Check brake system for dragging.
Is check result OK?
|
Go to Step 15.
|
Repair or replace defective part(s).
|
| 15 |
Clutch system check
1)Check clutch system for slipping.
Is check result OK?
|
End.
|
Repair or replace defective part(s).
|
Engine Hesitates – Momentary Lack of Response as Accelerator Is Depressed
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Preliminary check
1)Check the following points.
•Check that engine oil level is correct.
•Check that air intake / turbocharger circuit is working properly. •Check that main and circuit fuses have not blown. Is check result OK?
|
Go to Step 2.
|
Repair or replace defective part(s).
|
| 2 |
Environmental parameter check
1)When ignition is “OFF”, connect SUZUKI scan tool to DLC.
2)Check the values of the following parameters.
•Battery Voltage
•Accel Position •APP Sensor 1 Volt •APP Sensor 2 Volt •Barometric Pressure •IAT1 •IAT2 •Fuel Temperature •EGR-1 Valve Opening •EGR-2 Valve Opening •Fuel Rail Pressure Is check result OK?
|
Go to Step 3.
|
Check systems showing abnormal parameter.
|
| 3 |
Low fuel pressure circuit check
1)Check low fuel pressure circuit.
Is check result OK?
|
Go to Step 4.
|
Repair or replace defective part(s).
|
| 4 |
High fuel pressure circuit check
1)Check high fuel pressure circuit.
Is check result OK?
|
Go to Step 5.
|
Repair or replace defective part(s).
|
| 5 |
Glow plug control module and its circuit check
1)Check that glow plugs are working properly.
Is check result OK?
|
Go to Step 6.
|
Repair or replace defective part(s).
|
| 6 |
Cylinder compression check
1)Perform cylinder compression check.
Is check result OK?
|
End.
|
Cylinder compression is insufficient. Repair or replace defective part(s).
|
Improper Engine Idling or Engine Stops at Idle
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Preliminary check
1)Check the following points.
•Check that engine oil level is correct.
•Check that air intake / turbocharger circuit is working properly. •Check main and circuit fuses have blown. Is check result OK?
|
Go to Step 2.
|
Repair or replace defective part(s).
|
| 2 |
Configuration tests
1)If symptom is occurred after replacing any of the following component(s), it is necessary to register data into ECM.
•ECM
•Fuel injector(s) •Engine oil •DPF® differential pressure sensor •DPF® •A/F sensor-1 •MAF sensor with IAT sensor-1 •Common rail •Fuel pressure sensor •EGR-1 •EGR-2 •Fuel filter •BCM (Ignition switch model) •Keyless start control module (Keyless push start model) •Turbocharger •Inlet throttle valve Is check result OK?
|
Go to Step 3.
|
Register data of replacing component(s) in ECM described in Description of ECM Registration:D16AA.
|
| 3 |
Environmental parameter check
1)When ignition is “OFF”, connect SUZUKI scan tool to DLC.
2)Check the values of the following parameters.
•Battery Voltage
•Accel Position •APP Sensor 1 Volt •APP Sensor 2 Volt •Barometric Pressure •IAT1 •IAT2 •A/C Switch •Fuel Temperature •EGR-1 Valve Opening •EGR-2 Valve Opening •Fuel Rail Pressure Is check result OK?
|
Go to Step 4.
|
Check systems showing abnormal parameter.
|
| 4 |
Low fuel pressure circuit check
1)Check low fuel pressure circuit.
Is check result OK?
|
Go to Step 5.
|
Repair or replace defective part(s).
|
| 5 |
High fuel pressure circuit check
1)Check high fuel pressure circuit.
Is check result OK?
|
Go to Step 6.
|
Repair or replace defective part(s).
|
| 6 |
Glow plug control module and its circuit check
1)Check that glow plugs are working properly.
Is check result OK?
|
Go to Step 7.
|
Repair or replace defective part(s).
|
| 7 |
EGR-1 valve check
1)Check EGR-1 valve operation.
Is check result OK?
|
Go to Step 8.
|
Repair or replace defective part(s).
|
| 8 |
EGR-2 valve check
1)Check EGR-2 valve operation.
Is check result OK?
|
Go to Step 9.
|
Repair or replace defective part(s).
|
| 9 |
Inlet throttle valve operation check
1)Check inlet throttle valve operation.
Is check result OK?
|
Go to Step 10.
|
Repair or replace defective part(s).
|
| 10 |
A/C compressor magnet clutch check
1)Check magnet clutch operation for being stuck ON and chattering.
Is check result OK?
|
Go to Step 11.
|
Repair or replace defective part(s).
|
| 11 |
Cylinder compression check
1)Perform cylinder compression check.
Is check result OK?
|
Go to Step 12.
|
Cylinder compression is insufficient. Repair or replace defective part(s).
|
| 12 |
Lubrication system check
1)Check lubrication system is working properly.
Is check result OK?
|
End.
|
Repair or replace defective part(s).
|
Engine Cuts Out whilst Driving
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Preliminary check
1)Check the following points.
•Check that engine oil level is correct.
•Check that air intake / turbocharger circuit is working properly. •Check that main and circuit fuses have not blown. •Wiring on engine correctly connected to ground. •Battery correctly connected to ground. •Battery positive (+) cable and all leads are firmly connected. Is check result OK?
|
Go to Step 2.
|
Repair or replace defective part(s).
|
| 2 |
Environmental parameter check
1)When ignition is “OFF”, connect SUZUKI scan tool to DLC.
2)Check the value of the “Battery Voltage” parameter.
Is check result OK?
|
Go to Step 3.
|
Check systems showing abnormal parameter.
|
| 3 |
Glow plug control module and its circuit check
1)Check that glow plugs are working properly.
Is check result OK?
|
Go to Step 4.
|
Repair or replace defective part(s).
|
| 4 |
Low fuel pressure circuit check
1)Check low fuel pressure circuit.
Is check result OK?
|
Go to Step 5.
|
Repair or replace defective part(s).
|
| 5 |
High fuel pressure circuit check
1)Check high fuel pressure circuit.
Is check result OK?
|
End.
|
Repair or replace defective part(s).
|
Engine Knocking
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Preliminary check
1)Check the following points.
•Check that engine oil level is correct.
•Check that air intake / turbocharger circuit is working properly. Is check result OK?
|
Go to Step 2.
|
Repair or replace defective part(s).
|
| 2 |
Environmental parameter check
1)When ignition is “OFF”, connect SUZUKI scan tool to DLC.
2)Check the values of the following parameters.
•Battery Voltage
•Barometric Pressure •IAT1 •IAT2 •Fuel Temperature Is check result OK?
|
Go to Step 3.
|
Check systems showing abnormal parameter.
|
| 3 |
Low fuel pressure circuit check
1)Check low fuel pressure circuit.
Is check result OK?
|
Go to Step 4.
|
Repair or replace defective part(s).
|
| 4 |
High fuel pressure circuit check
1)Check high fuel pressure circuit.
Is check result OK?
|
Go to Step 5.
|
Repair or replace defective part(s).
|
| 5 |
Glow plug control module and its circuit check
1)Check that glow plugs are working properly.
Is check result OK?
|
Go to Step 6.
|
Repair or replace defective part(s).
|
| 6 |
Combustion chamber check
1)Check combustion chamber for excessive deposits.
•Valve:
•Cylinder head: •Piston: Is check result OK?
|
End.
|
Repair or replace defective part(s).
|
White Exhaust Fumes
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Preliminary check
1)Check the following points.
•Check that engine oil level is correct.
•Check that air intake / turbocharger circuit is working properly. •Check that main and circuit fuses have not blown. Is check result OK?
|
Go to Step 2.
|
Repair or replace defective part(s).
|
| 2 |
Environmental parameter check
1)When ignition is “OFF”, connect SUZUKI scan tool to DLC.
2)Check the values of the following parameters.
•Battery Voltage
•Barometric Pressure •Fuel Temperature •IAT1 •IAT2 Is check result OK?
|
Go to Step 3.
|
Check systems showing abnormal parameter.
|
| 3 |
Glow plug control module and its circuit check
1)Check that glow plugs are working properly.
Is check result OK?
|
Go to Step 4.
|
Repair or replace defective part(s).
|
| 4 |
Cylinder compression check
1)Perform cylinder compression check.
Is check result OK?
|
Go to Step 5.
|
Cylinder compressions is insufficient. Repair or replace defective part(s).
|
| 5 |
Cylinder head gasket and valve oil seal check
1)Check the following points.
•Check that cylinder head is correctly tightened
•Check seal of cylinder head gasket •Check seal of valve oil seals Is check result OK?
|
Go to Step 6.
|
•Cylinder head tightening incorrect:
—Proceed with removing-refitting of cylinder head to correctly retighten cylinder head.
•Cylinder head gasket damaged:
—Change cylinder head gasket.
•Valve oil seal missing:
—Replace valve oil seals.
|
| 6 |
Blow-by gas intake circuit check
1)Check condition of blow-by gas intake circuit, especially for obstructions in separator or hoses.
Is check result OK?
|
Go to Step 7.
|
•Fault in hose between oil separator and intake manifold:
—Restore circuit to working order.
•Fault in oil separator:—Change pipe if necessary.
—Restore circuit to working order.
—If necessary, replace cylinder head cover. |
| 7 |
Turbocharger seal check
1)Check that there is no engine oil leakage from turbocharger impeller shaft.
Is check result OK?
|
End.
|
Gasket seal insufficient:
•Replace turbocharger.
|
Black Exhaust Fumes
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Preliminary check
1)Check the following points.
•Check that engine oil level is correct.
•Check that air intake / turbocharger circuit is working properly. •Check that main and circuit fuses have not blown. Is check result OK?
|
Go to Step 2.
|
Repair or replace defective part(s).
|
| 2 |
Environmental parameter check
1)When ignition is “OFF”, connect SUZUKI scan tool to DLC.
2)Check the values of the following parameters.
•Battery Voltage
•Barometric Pressure •Fuel Temperature •EGR-1 Valve Opening •EGR-2 Valve Opening Is check result OK?
|
Go to Step 3.
|
Check systems showing abnormal parameter.
|
| 3 |
Low fuel pressure circuit check
1)Check low fuel pressure circuit.
Is check result OK?
|
Go to Step 4.
|
Repair or replace defective part(s).
|
| 4 |
High fuel pressure circuit check
1)Check high fuel pressure circuit.
Is check result OK?
|
Go to Step 5.
|
Repair or replace defective part(s).
|
| 5 |
EGR-1 valve check
1)Check EGR-1 valve operation.
Is check result OK?
|
Go to Step 6.
|
Repair or replace defective part(s).
|
| 6 |
EGR-2 valve check
1)Check EGR-2 valve operation.
Is check result OK?
|
Go to Step 7.
|
Repair or replace defective part(s).
|
| 7 |
Inlet throttle valve operation check
1)Check inlet throttle valve operation.
Is check result OK?
|
Go to Step 8.
|
Repair or replace defective part(s).
|
| 8 |
Glow plug control module and its circuit check
1)Check that glow plugs are working properly.
Is check result OK?
|
Go to Step 9.
|
Repair or replace defective part(s).
|
| 9 |
A/F sensor-1 check
1)Check A/F sensor-1 operation.
Is check result OK?
|
Go to Step 10.
|
Repair or replace defective part(s).
|
| 10 |
A/F sensor-2 check
1)Check A/F sensor-2 operation.
Is check result OK?
|
Go to Step 11.
|
Repair or replace defective part(s).
|
| 11 |
Timing check
1)Check that valve timing is correct referring to “Installation” under Timing Belt, Belt Tensioner and Idler Pulley Removal and Installation:D16AA.
Is check result OK?
|
Go to Step 12.
|
Valve timing is not correct. Adjust valve timing referring to “Installation” under Timing Belt, Belt Tensioner and Idler Pulley Removal and Installation:D16AA.
|
| 12 |
Turbocharger system check
1)Check turbocharger system is working properly.
Is check result OK?
|
End.
|
Repair or replace defective part(s).
|
Excessive Exhaust Fumes
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Preliminary check
1)Check the following points.
•Check that engine oil level is correct.
•Check that air intake / turbocharger circuit is working properly. •Check that main and circuit fuses have not blown. Is check result OK?
|
Go to Step 2.
|
Repair or replace defective part(s).
|
| 2 |
Environmental parameter check
1)When ignition is “OFF”, connect SUZUKI scan tool to DLC.
2)Check the values of the following parameters.
•Battery Voltage
•Barometric Pressure •ECT Is check result OK?
|
Go to Step 3.
|
Check systems showing abnormal parameter.
|
| 3 |
Low fuel pressure circuit check
1)Check low fuel pressure circuit.
Is check result OK?
|
Go to Step 4.
|
Repair or replace defective part(s).
|
| 4 |
High fuel pressure circuit check
1)Check high fuel pressure circuit.
Is check result OK?
|
Go to Step 5.
|
Repair or replace defective part(s).
|
| 5 |
Glow plug control module and its circuit check
1)Check that glow plugs are working properly.
Is check result OK?
|
Go to Step 6.
|
Repair or replace defective part(s).
|
| 6 |
Cylinder compression check
1)Perform cylinder compression check.
Is check result OK?
|
Go to Step 7.
|
Cylinder compression is insufficient. Repair or replace defective part(s).
|
| 7 |
A/F sensor-1 check
1)Check A/F sensor-1 operation.
Is check result OK?
|
Go to Step 8.
|
Repair or replace defective part(s).
|
| 8 |
A/F sensor-2 check
1)Check A/F sensor-2 operation.
Is check result OK?
|
Go to Step 9.
|
Repair or replace defective part(s).
|
| 9 |
Timing check
1)Check that valve timing is correct referring to “Installation” under Timing Belt, Belt Tensioner and Idler Pulley Removal and Installation:D16AA.
Is check result OK?
|
Go to Step 10.
|
Valve timing is not correct. Adjust valve timing referring to “Installation” under Timing Belt, Belt Tensioner and Idler Pulley Removal and Installation:D16AA.
|
| 10 |
Turbocharger system check
1)Check turbocharger system is working properly.
Is check result OK?
|
End.
|
Repair or replace defective part(s).
|
Engine Oil Excessive Level
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Preliminary check
1)Check the following points.
•Check that engine oil level is correct.
•Check condition of fuel circuit and check that it is working properly. Is check result OK?
|
Go to Step 2.
|
Repair or replace defective part(s).
|
| 2 |
Cylinder compression check
1)Carry out cylinder compression check.
Is check result OK?
|
Go to Step 3.
|
Cylinder compression is insufficient. Repair or replace defective part(s).
|
| 3 |
Timing check
1)Check that valve timing is correct referring to “Installation” under Timing Belt, Belt Tensioner and Idler Pulley Removal and Installation:D16AA.
Is check result OK?
|
Go to Step 4.
|
Valve timing not correct. Adjust valve timing referring to “Installation” under Timing Belt, Belt Tensioner and Idler Pulley Removal and Installation:D16AA.
|
| 4 |
Low fuel pressure circuit check
1)Check low fuel pressure circuit.
Is check result OK?
|
Go to Step 5.
|
Repair or replace defective part(s).
|
| 5 |
High fuel pressure circuit check
1)Check high fuel pressure circuit.
Is check result OK?
|
End.
|
Repair or replace defective part(s).
|
Poor Fuel Mileage
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Preliminary check
1)Check the following points.
•Check that engine oil level is correct.
•Check that air intake / turbocharger circuit is working properly. •Check tire pressure. Is check result OK?
|
Go to Step 2.
|
Repair or replace defective part(s).
|
| 2 |
Environmental parameter check
1)When ignition is “OFF”, connect SUZUKI scan tool to DLC.
2)Check the values of the following parameters.
•Battery Voltage
•Accel Position •APP Sensor 1 Volt •APP Sensor 2 Volt •Barometric Pressure •Fuel Rail Pressure •EGR-1 Valve Opening •EGR-2 Valve Opening Is check result OK?
|
Go to Step 3.
|
Check systems showing abnormal parameter.
|
| 3 |
Low fuel pressure circuit check
1)Check low fuel pressure circuit.
Is check result OK?
|
Go to Step 4.
|
Repair or replace defective part(s).
|
| 4 |
High fuel pressure circuit check
1)Check high fuel pressure circuit.
Is check result OK?
|
Go to Step 5.
|
Repair or replace defective part(s).
|
| 5 |
Cylinder compression check
1)Perform cylinder compression check.
Is check result OK?
|
Go to Step 6.
|
Cylinder compression is insufficient. Repair or replace defective part(s).
|
| 6 |
Turbocharger system check
1)Check turbocharger system is working properly.
Is check result OK?
|
Go to Step 7.
|
Repair or replace defective part(s).
|
| 7 |
Timing check
1)Check that valve timing is correct referring to “Installation” under Timing Belt, Belt Tensioner and Idler Pulley Removal and Installation:D16AA.
Is check result OK?
|
Go to Step 8.
|
Valve timing is not correct. Adjust valve timing referring to “Installation” under Timing Belt, Belt Tensioner and Idler Pulley Removal and Installation:D16AA.
|
| 8 |
A/F sensor-1 check
1)Check A/F sensor-1 operation.
Is check result OK?
|
Go to Step 9.
|
Repair or replace defective part(s).
|
| 9 |
A/F sensor-2 check
1)Check A/F sensor-2 operation.
Is check result OK?
|
Go to Step 10.
|
Repair or replace defective part(s).
|
| 10 |
Lubrication system check
1)Check lubrication system is working properly.
Is check result OK?
|
Go to Step 11.
|
Repair or replace defective part(s).
|
| 11 |
A/C compressor magnet clutch check
1)Check magnet clutch operation for stuck ON and chattering.
Is check result OK?
|
Go to Step 12.
|
Repair or replace defective part(s).
|
| 12 |
Brake system check
1)Check brake system for dragging.
Is check result OK?
|
Go to Step 13.
|
Repair or replace defective part(s).
|
| 13 |
Clutch system check
1)Check clutch system for slipping.
Is check result OK?
|
Go to Step 14.
|
Repair or replace defective part(s).
|
| 14 |
Combustion chamber check
1)Check combustion chamber for excessive deposits.
•Valve:
•Cylinder head:
•Piston:
Is check result OK?
|
End.
|
Repair or replace defective part(s).
|
Engine Oil Excessive Consumption
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Preliminary check
1)Check the following points.
•Check that engine oil level is correct.
Is check result OK?
|
Go to Step 2.
|
Refill or replace defective part(s).
|
| 2 |
Cylinder compression check
1)Perform cylinder compression check.
Is check result OK?
|
Go to Step 3.
|
Cylinder compression is insufficient. Repair or replace defective part(s).
|
| 3 |
Cylinder head gasket and valve oil seal check
1)Check the following points.
•Check that cylinder head is correctly tightened.
•Check seal of cylinder head gasket. •Check seal of stem seals. Is check result OK?
|
Go to Step 4.
|
•Cylinder head tightening incorrect:
—Proceed with removing-refitting of cylinder head to correctly retighten cylinder head.
•Cylinder head gasket damaged:
—Change cylinder head gasket.
•Valve oil seal missing:
—Replace stem seals.
|
| 4 |
Blow-by gas intake circuit check
1)Check condition of blow-by gas intake circuit, especially for obstructions in separator or hoses.
Is check result OK?
|
Go to Step 5.
|
•Fault in hose between oil separator and intake manifold:
—Restore circuit to working order.
•Fault in oil separator:—Change pipe if necessary.
—Restore circuit to working order.
—If necessary, replace cylinder head cover. |
| 5 |
Turbocharger seal check
1)Check that there is no engine oil leakage from turbocharger impeller shaft.
Is check result OK?
|
End.
|
Gasket seal insufficient.
Replace turbocharger with exhaust manifold.
|