Description And Operation: Description

Starting and recharging wiring diagram with Stop/Start. 

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1. Voltage stabilizer
2. Clutch Pedal Switch
3. Gear lever position switch
4. Generator
5. Starter
6. Stop/Start button

Courtesy of CHRYSLER GROUP, LLC

Analyzing the wiring diagram of both configurations (with and without Stop/Start), the starter is always operated by a single relay positioned in the front PDC and activated by the ECM. The activation signal (+50 with key without remote control or digital signal via CAN line with keyless go system) reaches the BCM, which will activate an internal relay of its own, which sends +30 to the relay located in the front PDC and activated by the ECM. When the ECM module activates relay T20, signal 87 (12 V) arrives at the solenoid of the starter, which will trigger the anchor and activate the starter. In the first moments, after the engine has started, the ECM reactivates relay T20 to check whether there is voltage at output 87. Should there be voltage at output 87 of relay T20, this would indicate a fault on the internal relay of the BCM. The ECM will set the correct fault codes and deactivate the Stop & Start function if present.

STOP/START SYSTEM  - The STOP & START (S/S) device automatically stops the engine whenever the vehicle is stopped and restarts it when the driver wants to start driving again. This improves the efficiency of the vehicle by reducing fuel consumption, the emission of harmful gases and noise pollution.

Courtesy of CHRYSLER GROUP, LLC

Manual activation and deactivation  - The S/S device can be activated/deactivated through the S/S button positioned on the central tunnel near the electric parking brake button. The deactivation of the system is indicated through a message on the instrument panel. When it is deactivated, the button's LED is off. When the system is active, the LED is on.