Start/Stop System - Description

STOP/START OPTION

STOP/START feature. This feature will allow the engine to automatically start and stop when certain conditions are meet.

The STOP/START starting system consists of:

- Starter relay

- Starter motor (including an integral starter solenoid)

- STOP/START switch

Other components to be considered as part of starting system are:

- An advanced AGM battery and intelligent battery sensor. The AGM (Advanced Glass Mat) type battery is capable of withstanding the increased cycling that a stop/start vehicle will experience

- High durability battery cables.

- A 220a generator that is up-sized specifically for use with the stop/start system. This is true for both 3.6L Pentastar and 5.7L Hemi applications.

- A larger, higher durability starter is equipped on all stop/start vehicles.

- A Voltage Stabilization Module (VSM) which will allow power accessories to remain functional between the stop/start event.

- PCM (monitors conditions for STOP/START)

The Battery, Starting, and Charging systems operate in conjunction with one another, and must be tested as a complete system. For correct operation of starting/charging systems, all components used in these 3 systems must perform within specifications. When attempting to diagnose any of these systems, it is important that you keep their interdependency in mind.

The diagnostic procedures used include the most basic conventional diagnostic methods, to the more sophisticated On-Board Diagnostics (OBD) built into the Powertrain Control Module (PCM). Use of an induction-type milliampere ammeter, volt/ohmmeter, battery charger, carbon pile rheostat (load tester), and 12-volt test lamp may be required.

Certain starting system components are monitored by the PCM and may produce a Diagnostic Trouble Code (DTC).