Tech Tips
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
| Symptom | Suspected Area | See page |
|---|---|---|
| Engine does not crank (does not start) | Battery | |
| Starter | ||
| Starter relay | ||
| Park/neutral position switch | ||
| Clutch start switch (for LHD) | ||
| Clutch start switch (for RHD) | ||
| Immobiliser system (w/ Entry and start system) | ||
| Immobiliser system (w/o Entry and start system) | ||
| Entry and start system | ||
| Difficult to start with cold engine | Engine difficult to start or stalling | |
| Pre-heating control circuit | ||
| Fuel injector | ||
| Fuel filter | ||
| Compression | ||
| ECM | ||
| Fuel supply pump | ||
| Fuel pressure sensor | ||
| Diesel throttle body | ||
| EDU relay | ||
| Fuel with low cetane number used | - | |
| Fuel frozen | - | |
| Air mixed into fuel pipe | - | |
| Difficult to start with hot engine | Engine difficult to start or stalling | |
| Fuel injector | ||
| Fuel filter | ||
| Compression | ||
| ECM | ||
| Fuel sypply pump | ||
| Fuel pressure sensor | ||
| Diesel throttle body | ||
| EDU relay | ||
| Air mixed into fuel pipe | - | |
| Battery deteriorated | - | |
| Engine stalls soon after starting | Engine difficult to start or stalling | |
| Fuel filter | ||
| Fuel injector | ||
| ECM power source circuit | ||
| ECM | ||
| Fuel supply pump | ||
| Fuel pressure sensor | ||
| Diesel throttle body | ||
| Air mixed into fuel pipe | - | |
| Immobiliser system activated | - | |
| Engine stalls (not including the condition listed above) | Engine difficult to start or stalling | |
| Abnormal initial idling (poor idling) | Rough idling or excessive engine vibration | |
| Fuel filter | ||
| Fuel injector | ||
| ECM | ||
| Fuel supply pump | ||
| Fuel pressure sensor | ||
| Mass air flow meter deteriorated | - | |
| Fuel with low cetane number used | - | |
| A/C signal circuit to ECM open and generator signal circuit open | - | |
| High engine idling speed | Rough idling or excessive engine vibration | |
| A/C signal circuit | ||
| Fuel injector | ||
| ECM | ||
| Fuel supply pump | ||
| Fuel pressure sensor | ||
| Speed sensor circuit open | ||
| Accelerator pedal | ||
| Low engine idling speed (poor idling) | Rough idling or excessive engine vibration | |
| A/C signal circuit | ||
| Fuel injector | ||
| EGR system | ||
| Compression | ||
| Fuel line (air bleeding) | - | |
| ECM | ||
| Fuel supply pump | ||
| Fuel pressure sensor | ||
| Diesel throttle body | ||
| Mass air flow meter deteriorated | - | |
| Rough idling (poor idling) | Rough idling or excessive vibration | |
| Hunting with hot engine (poor idling) | Fuel injector | |
| ECM power source circuit | ||
| Compression | ||
| Fuel line (air bleeding) | - | |
| ECM | ||
| Fuel supply pump | ||
| Fuel pressure sensor | ||
| Diesel throttle body | ||
| Hunting with cold engine (poor idling) | Fuel injector | |
| ECM power source circuit | ||
| Compression | ||
| Fuel line (air bleeding) | - | |
| ECM | ||
| Fuel supply pump | ||
| Fuel pressure sensor | ||
| Diesel throttle body | ||
| Fuel with low cetane number used | - | |
| Hesitation/Poor acceleration (poor driveability) | Lack of power or hesitation | |
| Fuel injector | ||
| Fuel filter | ||
| EGR system | ||
| Compression | ||
| ECM | ||
| Fuel supply pump | ||
| Fuel pressure sensor | ||
| Diesel throttle body | ||
| Accelerator pedal | ||
| Turbocharger system | ||
| Mass air flow meter deteriorated | - | |
| Intake system blockage | - | |
| Exhaust system blockage | - | |
| Brake override system | ||
| Knocking (poor driveability) | Engine knocking or rattling | |
| Black smoke emitted (poor driveability) | Black smoke emitted | |
| EGR system | ||
| Fuel injector | ||
| Accumulation in exhaust system | - | |
| Exhaust system blockage | - | |
| White smoke emitted (poor driveability) | EGR system | |
| Fuel injector | ||
| Fuel filter | ||
| ECM | ||
| Fuel supply pump | ||
| Fuel pressure sensor | ||
| Diesel throttle body | ||
| Pre-heating control circuit | ||
| Low quality fuel | - | |
| Surging/Hunting (poor driveability) | Fuel injector | |
| ECM | ||
| Mass air flow meter deteriorated | - | |
| Fuel supply pump | ||
| Fuel pressure sensor | ||
| Turbocharger system |