Test drive: Test drive means a cantain driving cycle or pattern that includes the ambient conditions when a fault was occured. Before driving, erase the stored fault code with Hi-scan.
Limp home mode : ECU switches to limp home mode in the event of failure of the important input/output signals.
The result is as follows.
Reduced power and lower maximum speed.
EGR function disabled.
Emergency shut off
For safety reasons, ECU effects emergency shut off of the engine if the following system components fail.
Injectors
Engine speed sensor
Pressure regulator
Fuel leakage
Attention
Never work on injection system with engine running or within 30 seconds after shutting off the engine. High pressure pump, rail, injectors and high pressure pipes are subjected to high pressure even after the engine has been switched off.
Safety measures
If it is necessary to run the engine for certain test steps (ex. Call up the actual values at the actuator test), the test equipment is to be set up suchthat mechanic does not have to be within possible range of high pressure jets when performing test.
People who are using pacemakers should not be closer than 30cm to ECU or wiring harness within the engine is running, since the high currents in the CR system produce considerable magnetic fields.
Acutuator test can be performed only if engine speed is "ZERO".
