GSIC - Global Service Information Center

# ECD SYSTEM > PROBLEM SYMPTOMS TABLE

## for Preparation Click here

HINT:

  Use the table below to help determine the cause of the problem symptom. 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) | Starter | -
ST relay | Click here
ECT sensor | -
Difficult to start with cold engine | Engine difficult to start or stalling | Click here
Starter signal circuit | Click here
Pre-heating control circuit | Click here
Injector | Click here
Fuel filter | Click here
Compression | Click here
ECM | Click here
Supply pump | Click here
Fuel pressure sensor | Click here
Diesel throttle body assembly | Click here
EDU (relay) | Click here
Battery deteriorated | -
Fuel with low cetane number used | -
Fuel frozen | -
Air mixed into fuel pipe | -
Difficult to start with warm engine | Engine difficult to start or stalling | Click here
Starter signal circuit | Click here
Injector | Click here
Fuel filter | Click here
Compression | Click here
ECM | Click here
Supply pump | Click here
Fuel pressure sensor | Click here
Diesel throttle body assembly | Click here
EDU (relay) | Click here
Air mixed into fuel pipe | -
Battery deteriorated | -
Engine stalls soon after starting | Engine difficult to start or stalling | Click here
Fuel filter | Click here
Injector | Click here
ECM power source circuit | Click here
ECM | Click here
Supply pump | Click here
Fuel pressure sensor | Click here
Diesel throttle body assembly | Click here
Air mixed into fuel pipe | -
Immobilizer system activated | -
Engine stalling (not including the condition listed above) | Engine difficult to start or stalling | Click here
Abnormal initial idling (poor idling) | Rough idling or excessive engine vibration | Click here
Fuel filter | Click here
Injector | Click here
ECM | Click here
Supply pump | Click here
Fuel pressure sensor | Click here
Mass air flow meter deteriorated | -
Fuel with low cetane number used | -
A/C's signal circuit to ECM open and generator's signal circuit to ECM open | -
Low quality fuel | -
High engine idling speed (poor idling) | Rough idling or excessive engine vibration | Click here
A/C signal circuit | -
Injector | Click here
Starter signal circuit | Click here
ECM | Click here
Supply pump | Click here
Fuel pressure sensor | Click here
Speed sensor circuit open | Click here
Accelerator pedal | Click here
Low engine idling speed (poor idling) | Rough idling or excessive engine vibration | Click here
A/C signal circuit | -
Injector | Click here
EGR system | Click here
Compression | Click here
Valve clearance | Click here
Fuel line (air bleeding) | Click here
ECM | Click here
Supply pump | Click here
Fuel pressure sensor | Click here
Diesel throttle body assembly | Click here
Mass air flow meter deteriorated | -
Rough idling (poor idling) | Rough idling or excessive engine vibration | Click here
Hunting with hot engine (poor idling) | Injector | Click here
ECM power source circuit | Click here
Compression | Click here
Fuel line (air bleeding) | Click here
Valve clearance | Click here
ECM | Click here
Supply pump | Click here
Fuel pressure sensor | Click here
Diesel throttle body assembly | Click here
Hunting with cold engine (poor idling) | Injector | Click here
ECM power source circuit | Click here
Compression | Click here
Fuel line (air bleeding) | Click here
Valve clearance | Click here
ECM | Click here
Supply pump | Click here
Fuel pressure sensor | Click here
Diesel throttle body assembly | Click here
Hesitation / Poor acceleration (poor driveability) | Lack of power or hesitation | Click here
Injector | Click here
Fuel filter | Click here
EGR system | Click here
Compression | Click here
ECM | Click here
Supply pump | Click here
Fuel pressure sensor | Click here
Diesel throttle body assembly | Click here
Accelerator pedal | Click here
Turbocharger system | Click here
Knocking (poor driveability) | Engine knocking or rattling | Click here
Black smoke emitted (poor driveability) | Black smoke emitted | Click here
EGR system | Click here
Injector | Click here
Accumulation in exhaust system | -
White smoke emitted (poor driveability) | EGR system | Click here
Injector | Click here
Fuel filter | Click here
ECM | Click here
Supply pump | Click here
Fuel pressure sensor | Click here
Diesel throttle body assembly | Click here
Pre-heating control circuit | Click here
Low quality fuel | -
Surging / Hunting (poor driveability) | Injector | Click here
ECM | Click here
Supply pump | Click here
Fuel pressure sensor | Click here
Turbocharger system (VN turbo vane movement is detective) | Click here