Toyota Corolla (E120): Problem symptoms table
Hint
: use the table below to help determine the cause of the problem. The numbers indicate the priority of the likely cause of the problem. Check each part in order. If necessary, replace these parts.
1. Headlamp and tail lamp
2. Front fog lamp system
3. Turn signal and hazard warning system
4. Stop lamp system
5. Back up lamp system
6. Interior lamp system
7. Light control rheostat system
Other materials:
Light control switch circuit
Wiring diagram
Inspection procedure
1 Check headlamp dimmer switch assy (light control switch)
2 Check wire harness (tvip ecu light control switch)
Disconnect the tvip ecu and light control switch connectors.
check the continuity between the terminals of the tvip
e ...
Circuit description
When driving uphill under cruise control, in order to reduce the number of
shifting due to on–off overdrive
operation and to provide smooth driving, when down shifting in the
electronically controlled transmission occurs,
a signal to prevent upshift until the end of the uphill slope is sent ...
Inspection procedure
Hint:
hand–held tester only:
narrowing down the trouble area is possible by performing ”a/f control” active
test (heated oxygen
sensor or other trouble areas can be distinguished).
Perform active test using hand–held tester (a/f control).
Hint:
”a/f control” is the active te ...