Diagnostics

Problem symptoms table

~1min read
Hint

: if a normal code is displayed during the dtc check but the trouble still occurs, check the circuits for each symptom in the order given in the charts on the following pages and proceed to the page given for troubleshooting.

The matrix chart is divided into 3 chapters.

  • If the instruction ”proceed to next circuit inspection shown on matrix chart” is given in the flow chart for each circuit, proceed to the circuit with the next highest number in the table to continue the check.
  • If the trouble still occurs even though there are no abnormalities in any of the other circuits, then check and replace the ecm.
Chapter 1: electronic circuit matrix chart
Toyota Corolla.  Electronic circuit matrix chart

*1: W/ cruise control

Chapter 2: on–vehicle repair ( : a245e/a246e automatic transaxle repair manual pub. No. Rm941u)
Toyota Corolla. On–vehicle repair
Toyota Corolla. On–vehicle repair
Chapter 3: off–vehicle repair ( : a245e/a246e automatic transaxle repair manual pub. No. Rm941u)
Toyota Corolla. Off–vehicle repair
Toyota Corolla. Off–vehicle repair

Test yourself

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