Operation - Vehicles Without Stop/Start System

When the Stop/start switch is operated, if the Keyless Vehicle Module (KVM) detects a valid smart key in the vehicle, the Central Junction Box (CJB) transmits a hardwired crank request to the Engine Control Module (ECM).

Refer to: Anti-Theft - Passive (Description and Operation).

The ECM energizes the starter motor relay, when:

• it receives a crank request from the CJB
• the brake pedal is pressed
• the Transmission Control Switch (TCS) is in 'P' (Park) or 'N' (Neutral) position.

The energized starter relay supplies battery power to the starter solenoid, which energizes and causes the pinion gear to engage with the ring gear. When the starter solenoid is energized it also closes high-current contacts, which connects battery power from the Battery Junction Box (BJB) to the motor to turn the engine.