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.
Inspect the fuses and relays related to this system before inspecting the suspected areas below.
| Symptom | Suspected Area | See page |
|---|---|---|
| Engine does not crank (does not start) | Battery | - |
| Starter (for 1.6 kW type) | ||
| Starter (for 2.0 kW type) | ||
| Starter relay | ||
| Clutch start switch | ||
| Starter signal circuit | ||
| Difficult to start with cold engine | Engine difficult to start or stalling | |
| Starter signal circuit | ||
| Pre-heating control circuit | ||
| Fuel injector | ||
| Fuel filter | - | |
| Compression | ||
| ECM | ||
| Supply pump | ||
| Fuel pressure sensor | ||
| Diesel throttle body | ||
| Low fuel tank level | - | |
| Fuel line (air bleeding) | ||
| VC output circuit | ||
| Fuel with low cetane number used | - | |
| Fuel frozen | - | |
| Difficult to start with hot engine | Engine difficult to start or stalling | |
| Starter signal circuit | ||
| Fuel injector | ||
| Fuel filter | - | |
| Compression | ||
| ECM | ||
| Supply pump | ||
| Fuel pressure sensor | ||
| Diesel throttle body | ||
| Low fuel tank level | - | |
| Fuel line (air bleeding) | ||
| VC output circuit | ||
| Battery deteriorated | - | |
| Engine stalls soon after starting | Engine difficult to start or stalling | |
| Fuel filter | - | |
| Fuel injector | ||
| ECM power source circuit | ||
| ECM | ||
| Supply pump | ||
| Fuel pressure sensor | ||
| Diesel throttle body | ||
| Pressure control valve | ||
| Fuel line (air bleeding) | ||
| Engine stalls (other than the conditions listed above) | Engine difficult to start or stalling | |
| Abnormal initial idling (poor idling) | Rough idling or excessive engine vibrations | |
| Fuel filter | - | |
| Fuel injector | ||
| ECM | ||
| Supply pump | ||
| Fuel pressure sensor | ||
| Pressure control valve | ||
| Engine coolant temperature sensor | ||
| Fuel with low cetane number used | - | |
| A/C signal circuit | - | |
| High engine idling speed (poor idling) | Rough idling or excessive engine vibrations | |
| A/C signal circuit | - | |
| Fuel injector | ||
| Starter signal circuit | ||
| ECM | ||
| Supply pump | ||
| Fuel pressure sensor | ||
| Pressure control valve | ||
| Engine coolant temperature sensor | ||
| Low engine idling speed (poor idling) | Rough idling or excessive engine vibrations | |
| A/C signal circuit | - | |
| Fuel injector | ||
| EGR system | ||
| Compression | ||
| Valve clearance | ||
| Fuel line (air bleeding) | ||
| ECM | ||
| Supply pump | ||
| Fuel pressure sensor | ||
| Diesel throttle body | ||
| Pressure control valve | ||
| Engine coolant temperature sensor | ||
| Rough idling (poor idling) | Rough idling or excessive engine vibrations | |
| Hunting with hot engine (poor idling) | Fuel injector | |
| ECM power source circuit | ||
| Compression | ||
| Fuel line (air bleeding) | ||
| Valve clearance | ||
| ECM | ||
| Supply pump | ||
| Fuel pressure sensor | ||
| Diesel throttle body | ||
| Pressure control valve | ||
| Engine coolant temperature sensor | ||
| Hunting with cold engine (poor idling) | Fuel injector | |
| ECM power source circuit | ||
| Compression | ||
| Fuel line (air bleeding) | ||
| Valve clearance | ||
| ECM | ||
| Supply pump | ||
| Fuel pressure sensor | ||
| Diesel throttle body | ||
| Pressure control valve | ||
| Engine coolant temperature sensor | ||
| Fuel with low cetane number used | - | |
| Hesitation/Poor acceleration (poor driveability) | Lack of power or hesitation | |
| Fuel injector | ||
| Fuel filter | - | |
| Nozzle leakage pipe assembly | - | |
| EGR system | ||
| Compression | ||
| ECM | ||
| Supply pump | ||
| Fuel pressure sensor | ||
| Diesel throttle body | ||
| Pressure control valve | ||
| Turbocharger system | ||
| Diesel turbo pressure sensor | ||
| Knocking (poor driveability) | Engine knocking or rattling | |
| Black smoke emitted (poor driveability) | Black smoke emitted | |
| Fuel injector | ||
| EGR system | ||
| ECM | ||
| Supply pump | ||
| Fuel pressure sensor | ||
| Diesel throttle body | ||
| Pressure control valve | ||
| Mass air flow meter | ||
| Diesel turbo pressure sensor | ||
| White smoke emitted (poor driveability) | EGR system | |
| Fuel injector | ||
| Fuel filter | - | |
| ECM | ||
| Supply pump | ||
| Fuel pressure sensor | ||
| Diesel throttle body | ||
| Pressure control valve | ||
| Turbocharger system | ||
| Surging/Hunting (poor driveability) | Fuel injector | |
| ECM | ||
| Supply pump | ||
| Fuel pressure sensor | ||
| Pressure control valve | ||
| Fuel filter | - | |
| Turbocharger system | ||
| Vehicle speed sensor | - | |
| Clutch start switch |