Toyota Corolla (E120) 2002–2008 Repair Manual / Introduction / How to troubleshoot ecu controlled
systems / Customer problem analysis
Toyota Corolla (E120): Customer problem analysis
Hint
:
- in troubleshooting, the problem symptoms must be confirmed accurately, meaning that all preconceptions must be set aside in order to make an accurate judgement. To ascertain what the problem symptoms are, it is extremely important to ask the customer about the problem and conditions when it occurred.
- The following 5 items are important points in the problem analysis. Past problems which are thought to be unrelated and the repair history, etc. May also help in some cases. Therefore, as much information as possible should be gathered and its relationship with the problem symptoms should be correctly ascertained for use as reference in troubleshooting. A customer problem analysis table is provided for your use in the diagnostics section for each system.

(Sample) supplemental restraint system check sheet.

Other materials:
Dialing by selecting a name
1 Select “Phonebook” using .
2 Select the desired name using
and press the off-hook switch.
By pressing (Add S. Dial) and then
one of the speed dial buttons (from
to ) while the desired name is selected,
it can be registered as a speed dial. ...
Circuit description
The airbag sensor front lh circuit consists of the airbag sensor assy center
and airbag sensor front lh.
Dtc b1158/b1159/16 is recorded when malfunction is detected in the airbag sensor
front lh circuit.
Wiring diagram
...
Circuit description
The vapor pressure sensor, vsv for canister closed valve (ccv), vsv for
pressure switching valve are used
to detect abnormalities in the evaporative emission control system.
The ecm decides whether there is an abnormality in the evaporative emission
control system based on the
vapor pressur ...


