Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / Cruise control system / Diagnosis circuit / Circuit description
Toyota Corolla (E120): Circuit description
This circuit sends a signal to the cruise control ecu assy that dtc output is required.
Wiring diagram

Other materials:
Washer fluid
Add washer fluid in the following situations:
● A washer does not work.
● Vehicles without a multi-information display: The low windshield washer fluid
warning light (if equipped) comes on.
● Vehicles with a multi-information display: The warning message (if equipped) appear ...
Inspection
1. Cooling fan relay
Inspect the cooling fan relay continuity.
Using an ohmmeter, check that there is continuity
between terminals 1 and 2.
If there is no continuity, replace the relay.
Check that there is no continuity between terminals
3 and 5.
If there is conti ...
Circuit description
The intake air temperature (iat) sensor, mounted on the mass
air flow (maf) sensor, monitors the intake air temperature. The
iat sensor has a thermistor that varies its resistance depending
on the temperature of the intake air. When the air temperature
is low, the resistance in the thermisto ...


