Toyota Corolla (E120) 2002–2008 Repair Manual / Introduction / How to troubleshoot ecu controlled systems

Toyota Corolla (E120): How to troubleshoot ecu controlled systems

Share this page:

Other materials:

Ecm/pcm processor
Dtc p0606 ecm/pcm processor Monitor description The ecm continuously monitors its internal circuits. This self–check insures that the ecm is functioning properly. If a malfunction is detected, the ecm will set the appropriate dtc and illuminate the mil. The two cpus, main and sub cpu i ...

Circuit description
When the idle switch is turned on, a signal is sent to the cruise control ecu assy. The cruise control ecu assy uses this signal to correct the discrepancy between the throttle valve position and the actuator position sensor values to enable accurate cruise control at the set speed. If the idl ...

Sound quality is bad in all modes (volume is too low)
Wiring diagram Inspection procedure 1 Adjust sound quality Adjust the sound quality.  Operate the radio receiver assy to adjust the sound quality. Standard: malfunction disappear. 2 Compare it with another car of same model Compare it with another vehicle of the same mo ...