Toyota Corolla (E120) 2002–2008 Repair Manual / Introduction / How to troubleshoot ecu controlled
systems / Circuit inspection
Toyota Corolla (E120): Circuit inspection
How to read and use each page is shown below.
Other materials:
Purpose of the readiness tests
The on–board diagnostic (obd ii) system is designed to monitor the
performance of emission–related
components and report any detected abnormalities in the form of diagnostic
trouble codes
(dtcs). Since the various components need to be monitored during different
driving condition ...
Inspection procedure
1 Inspect transmission wire(s1)
Disconnect the transmission wire connector from the
transaxle.
measure the resistance according to the value(s) in the
table below.
Standard:
2 Check harness and connector(transmission wire – ecm)
Connect the transmission connec ...
Terminals of ecu
1. Inspect integration relay
Disconnect the connector and check the continuity of each terminal of
the disconnected connector.
Standard :
If the result is not as specified, the vehicle’s side may malfunction.
Reconnect the connector and check each terminal.
Standard:
If ...