Toyota Corolla (E120): Engine control system

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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 cond ...

Shift position uses
*: Shifting to the D position allows the system to select a gear suitable for driving conditions. Setting the shift lever to the D position is recommended for normal driving. ■Downshifting restrictions The shift lever cannot be downshifted if the following speeds are exceeded. mph (km ...

Inspection procedure
1 Check d squib circuit(airbag sensor assy center – horn button assy) Disconnect the negative (–) terminal cable from the battery, and wait at least for 90 seconds.  disconnect the connectors between the airbag sensor assy center and the horn button assy.  for the oran ...