Engine does not Start: Description
- ENGINE START SYSTEM OPERATION
- When the engine switch is pressed with the brake pedal depressed and shift lever in P or N, 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 engine switch indicator light illuminates in green.
- The main body ECU activates the D-ACC, D-IG1 and IG2 relays.
- The certification ECU outputs a steering UNLOCK signal. The signal is sent to the steering lock ECU via the LIN communication line.
- 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 cut relay.
- The main body ECU deactivates the D-ACC relay until the ECU detects an engine start
- The ECU reactivates the D-ACC relay and turns off the engine switch indicator light.SYMBOLS OF MAIN BODY ECU
Symbols of main body ECU Signals SSW1/SSW2 Engine switch on (ACC, IG) signal ACCD D-ACC relay operation signal IG2D IG2 relay operation signal STR2 ST CUT relay operation signal STR Park / neutral position switch signal STP Stop light switch signal TACH Engine start detection signal STSW Starter activation request signal ACCR ACC cut request signal