Toyota Corolla Quiz
Diagnostics

Inspection procedure

In this manual: Diagnostics
Introduction — 31Preparation — 32Service specifications — 19Diagnostics — 497Engine control system — 6Fuel — 13Emission control — 28Exhaust — 3Cooling — 13Lubrication — 7Ignition — 3Starting & charging — 13Front suspension — 12Rear suspension — 9Tire & wheel — 1Drive shaft / propeller shaft — 15Brake — 42Automatic transmission / trans — 47Clutch — 19Steering column — 9Power steering — 11Heater & air conditioner — 20Supplemental restraint system — 27Seat belt — 12Lighting — 18Wiper & washer — 9Audio & visual — 12Wiring — 1Communication system — 1Windshield/windowglass/mirror — 31Seat — 10Theft deterrent & door lock — 10Sliding roof/convertible — 8Engine hood/door — 12Exterior/interior trim — 20Vehicle control system — 1Cruise control — 5Maintenance — 8
5steps
~30min
2/5difficulty
Done 0 of 5
1 Check fuse(ecu–ig)
Toyota Corolla. Check fuse
  1. Remove the ecu–ig fuse from the instrument panel j/b.
  2. check the continuity of the ecu–ig fuse.

    Ok: continuity

    2 Inspect terminal voltage(b)
2 Inspect terminal voltage(b)
Toyota Corolla. Inspect terminal voltage
  1. Remove the cruise control ecu assy with connector still connected.
  2. turn the ignition switch to on.
  3. measure voltage between terminals 2 (b) and 16 (gnd) of the cruise control ecu assy connector.

    Ok: voltage: 10 – 16 v

    3 Check harness and connector(between cruise control ecu assy
3 Check harness and connector(between cruise control ecu assy and body ground)
Toyota Corolla. Check harness and connector
  1. Measure resistance between terminal 16 (gnd) of the cruise control ecu assy connector and body ground.

    Ok: resistance: below 1 Ω

Check and repair harness and connector between cruise control ecu assy
Check and repair harness and connector between cruise control ecu assy and battery

Test yourself

A quick Toyota Corolla quiz: every answer comes with an explanation and a link to the manual page.