Car communication

The following can be read off during car communication.

Read diagnostic trouble codes (DTCs) 

DENSO engine management system contains approximately 120 diagnostic trouble codes (DTC). Each diagnostic trouble code (DTC) can give information on whether the fault depends on an open-circuit, short-circuit to supply voltage or short-circuit to ground. This gives a combined total of 324 different diagnostic trouble codes (DTCs).

Activation 

The following output signals/components can be activated:

• Injectors (sequentially)
• Power stages/ignition coils (sequentially)
• Assisted air control valve
• air conditioning (A/C) relay (compressor clutch)
• Output signal engine coolant temperature sensor
• Indicator lamp CRUISE
• Heating rear heated oxygen sensor (HO2S)
• Engine cooling fan (FC) (High or low speed)
• Electronic Throttle System warning lamp
• EVAP canister shut-off valve
• Canister purge (CP) valve
• Fuel pump (FP) relay
• Malfunction Indicator Lamp (MIL)
• Econometer signal to the engine control module (ECM)
• Engine speed (RPM) to Can and Driver information Module

Reading off plotter 

Here curves and values in a number of parameters van be read off. As before a maximum of 3 can be read at the same time.

Activating diagnostic functions 

This is a new function for activating the different test phases in the following on-board diagnostic (OBD) systems:

• Return Fuel Lacking System (RFLS)
• Long-term fuel trim (short-term fuel trim) for front heated oxygen sensor (HO2S), idling and part load