Toyota Corolla (E120): Inspection procedure
1 Input signal check
- See input signal check on page 05–745.
- check indicator light operation when driving with vehicle
speed above 40 km/h (25 mph), and with vehicle speed
below 40 km/h (25 mph).
Ok: vehicle speed above 40 km/h (25 mph): indicator light blinks vehicle speed below 40 km/h (25 mph): indicator light stays on
2 Check speedometer circuit
3 Check harness and connector(between cruise control ecu assy and combination meter assembly)
- Check for open and short circuit in harness and connector between cruise control ecu assy and combination meter assembly
Check and replace cruise control ecu assy
Other materials:
Manual transmission / transaxle
Service data
Torque specification
...
Overhaul
Hint: components:
1. Remove rear wheel
2. Remove spare wheel cover assy
3. Remove rear floor finish plate
4. Remove luggage compartment trim cover inner lh
5. Remove rear shock absorber with coil spring
Support the rear axle beam with jack.
Remove the 2 nuts and bolt.
...
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 ...