DTC 43

CODE - 43 STARTER SIGNAL CIRCUIT

Circuit Description

When the engine is cranked, the intake air flow is slow, so fuel vaporization is poor. A rich mixture is therefore necessary in order to achieve good startability. While the engine is being cranked, the battery positive 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.




Detecting Condition




Diagnostic Chart

NOTE: this diagnostic chart is based on the premise that the engine cranked normally. If the engine is not cranked, proceed to the matrix of problem symptoms. Refer to Diagnosis By Symptom.




Wiring Diagram

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Step 2:

Inspection Procedure