Theory Of Operation

WARNING: This page is about a different car, the 2015 Jeep Renegade. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Checking 12-Volt Switched Battery B(+) Circuit For Voltage

Courtesy of CHRYSLER GROUP, LLC

The purpose of the following procedure is to demonstrate how to check the operation of a generic ground circuit with a test light.

NOTE:

The circuit shown in illustration is an example, and is intended for demonstrational purpose only.

The following are circuit tests covered in this procedure:

Testing Ground Circuit With Test Light

NOTE:

Perform the following test using a known good test light:

Possible Causes
OPEN GROUND CIRCUIT (CHAFED, PIERCED, PINCHED OR BROKEN WIRE)
OPEN IN-LINE CONNECTOR (BENT, PUSHED OUT OR CORRODED TERMINALS)