Power Source Mode Does Not Change to ON (READY)

Power Source Mode does not Change to ON (READY)

DESCRIPTION




1. POWER SWITCH ON (READY) FUNCTION
a. If the power switch is pressed with the shift lever in the P position and the brake pedal depressed, the main body ECU determines that it is a HV control system on (READY) request.
b. The certification ECU and other ECUs perform key verification via the LIN communication line.
c. The main body ECU activates the ACC relay.
d. The main body ECU activates the IG1 and IG2 relays.
e. The certification ECU outputs a steering UNLOCK signal. The signal is sent to the main body ECU via the steering lock ECU.
f. The main body ECU sends an on (READY) request signal to the HV control ECU.
g. When HV control system on (READY) requests signal, the main body ECU determines that the HV control system has been on (READY).
The ECU reactivates turns off the power switch indicator light.

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INSPECTION PROCEDURE

HINT: After the main body ECU, certification ECU, steering lock ECU, ID code box and/or HV control ECU are/is replaced, perform the registration procedures for the engine immobilizer system.