RAV4 2WD L4-2.0L (1AZ-FE) (2003)
Starter Motor: Testing and Inspection
Starter Signal Circuit
Starter Signal Circuit
CIRCUIT DESCRIPTION
Wiring Diagram
When the engine is cranked, the intake air flow is slow, so the fuel vaporization is poor. A rich mixture is therefore necessary in order to achieve good
startability. While the engine is being cranked, the battery voltage is applied to terminal STA of the ECM. The starter signal is mainly used to increase
the fuel injection volume for the starting injection control and after-start injection control.
INSPECTION PROCEDURE
HINT: This diagnostic chart is based on the premise that the engine is cranked normally. If the engine is not cranked, proceed to the problem symptoms
table.