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.
Inspected the fuses and relays related to this system before inspecting the suspected areas below.
Symptom | Suspected Area | Link |
---|---|---|
Engine does not crank (does not start) | Battery | |
Starter signal circuit | ||
Entry and start system | ||
VC output circuit | ||
Difficult to start with cold engine | Engine difficult to start or stalling | |
Glow control system No. 1 | ||
Glow control system No. 2 | ||
Injector assembly | ||
Fuel filter element sub-assembly | ||
Compression | ||
ECM | ||
Suction control valve | ||
Fuel pressure sensor | ||
Diesel throttle body assembly | ||
EDU relay | ||
Fuel with low cetane number used | - | |
Fuel frozen | - | |
Air mixed into fuel pipe | - | |
No initial combustion (does not start) | Immobiliser system (w/ entry and start system) | |
Immobiliser system (w/o entry and start system) | ||
VC output circuit | ||
Difficult to start with hot engine | Engine difficult to start or stalling | |
Injector assembly | ||
Fuel filter element sub-assembly | ||
Compression | ||
ECM | ||
Suction control valve | ||
Fuel pressure sensor | ||
Diesel throttle body assembly | ||
EDU relay | ||
Air mixed into fuel pipe | - | |
Battery deteriorated | - | |
Engine stalls soon after starting | Engine difficult to start or stalling | |
Injector assembly | ||
Fuel filter element sub-assembly | ||
ECM power source circuit | ||
ECM | ||
Suction control valve | ||
Fuel pressure sensor | ||
Diesel throttle body assembly | ||
Air mixed into fuel pipe | - | |
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 | |
Injector assembly | ||
Fuel filter element sub-assembly | ||
ECM | ||
Suction control valve | ||
Fuel pressure sensor | ||
Mass air flow meter assembly 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 | - | |
Injector assembly | ||
ECM | ||
Suction control valve | ||
Fuel pressure sensor | ||
Speed sensor circuit open | ||
Accelerator pedal sensor assembly | ||
Low engine idling speed (poor idling) | Rough idling or excessive engine vibration | |
A/C signal circuit | - | |
Injector assembly | ||
EGR system | ||
Compression | ||
Fuel line (air bleeding) | - | |
ECM | ||
Suction control valve | ||
Fuel pressure sensor | ||
Diesel throttle body assembly | ||
Mass air flow meter assembly deteriorated | - | |
Rough idling (poor idling) | Rough idling or excessive vibration | |
Hunting with hot engine (poor idling) | Injector assembly | |
ECM power source circuit | ||
Compression | ||
Fuel line (air bleeding) | - | |
ECM | ||
Suction control valve | ||
Fuel pressure sensor | ||
Diesel throttle body assembly | ||
Hunting with cold engine (poor idling) | Injector assembly | |
ECM power source circuit | ||
Compression | ||
Fuel line (air bleeding) | - | |
ECM | ||
Suction control valve | ||
Fuel pressure sensor | ||
Diesel throttle body assembly | ||
Fuel with low cetane number used | - | |
Hesitation/poor acceleration (poor driveability) | Lack of power or hesitation | |
Injector assembly | ||
Fuel filter element sub-assembly | ||
EGR system | ||
Compression | ||
ECM | ||
Suction control valve | ||
Fuel pressure sensor | ||
Diesel throttle body assembly | ||
Accelerator pedal sensor assembly | ||
Turbocharger system | ||
Mass air flow meter assembly deteriorated | - | |
Intake system blockage | - | |
Exhaust system blockage | - | |
Brake override system | ||
Knocking (poor driveability) | Engine knocking or rattling | |
Turbocharger noise | ||
Black smoke emitted (poor driveability) | Black smoke emitted | |
EGR system | ||
Injector assembly | ||
PM accumulation in exhaust system | - | |
Exhaust system blockage | - | |
DPF catalyst damaged | - | |
White smoke emitted (poor driveability) | EGR system | |
Injector assembly | ||
Fuel filter element sub-assembly | ||
ECM | ||
Suction control valve | ||
Fuel pressure sensor | ||
Diesel throttle body assembly | ||
Glow control system No. 1 | ||
Glow control system No. 2 | ||
Low quality fuel | - | |
Exhaust fuel addition injector assembly stuck open | - | |
White smoke emitted | ||
Turbocharger oil leak and white smoke | ||
Surging/hunting (poor driveability) | Injector assembly | |
ECM | ||
Mass air flow meter assembly deteriorated | - | |
Suction control valve | ||
Fuel pressure sensor | ||
Turbocharger system |