Engine does not Start: Description
- ENGINE START SYSTEM FUNCTION
- If the engine switch is pressed with the shift lever in the P or N position and the brake pedal depressed, the main body ECU determines that it is an engine start request.
- The certification ECU and other ECUs perform key verification via the LIN communication line.
- The main body ECU activates the ACC relay.
- The main body ECU activates the IG1 and IG2 relays.
- The certification ECU outputs a steering UNLOCK signal. The signal is sent to the main body ECU via the steering lock ECU.
- The main body ECU sends an engine start request signal to the ECM.
- The ECM sends an ACC cut request signal to the main body ECU.
- The ECM and main body ECU activate the ST relay.
- The main body ECU deactivates the ACC relay until the ECU detects an engine start.
- When engine revolution speed reaches 1200 rpm, the ECU determines that the engine has been started.
The ECM stop sending an ACC cut request signal to the main body ECU.
The main body ECU reactivates the ACC relay and turns off the engine switch indicator light.
MAIN BODY ECU SYMBOLS AND SIGNALS REFERENCESymbols of main body ECU Signals STP Stop light switch ON signal Input SSW1/SSW2 Engine switch ON signal Input ACCD ACC relay operation signal Output SLP Shift lock actuator position signal Input STP Stop light signal Input IG1D IG1 relay operation signal Output P Shift lock signal Input IG2D IG2 relay operation signal Output STR2 ST relay operation signal (Sub) Output STR Park / neutral position switch signal Input TACH Engine start detection signal Input STSW Starter activation request signal Output ACCR ACC cut request signal Input ECM SYMBOLS AND SIGNALS REFERENCESymbols of ECM Signals ACCR ACC cut request signal Output TACH Engine revolution speed signal Output STSW Starter activation request signal Input NSW Park / neutral position switch signal Input STAR ST relay operation signal (Main) Output STA Starter activation signal Input