System Operation: Charging

When it is required to charge the vehicle battery, connect the positive connection to the battery positive post, and attach the charger negative connection to a body or engine ground. Do not connect the negative cable of the charger to the battery monitoring sensor. Connecting directly to the battery monitoring sensor bypasses the sensor, not allowing the sensor to detect the charge current. As a result the battery state of charge does not reflect the charging. Look for the body ground cable coming off the clamp of the battery monitoring sensor and connect in this location (typically on the shock tower sheet metal). The placement of the battery is such that the battery negative terminal is located under the sheet metal shroud making sheet metal ground the obvious choice for the charger. Refer to BATTERY, MOUNTING AND CABLES

If the battery is being charged due to a load shedding message, only charging the battery properly assists in clearing this message. The Electrical Energy Management recalibrates the battery state of charge as described above after about 8 hours if the charger was improperly installed.

NOTE: If the charger in incorrectly connected to the battery negative terminal, DO NOT reset the battery monitoring sensor using the diagnostic scan tool. This reset is reserved for new battery installation. This reset clears the learned battery data, the battery time in service, and affects the aging parameters, which have been learned since the installation of the battery.

If the battery was charged by connecting to the battery monitoring sensor, force an internal reset by removing the battery monitoring sensor from the battery negative post or disconnecting the battery monitoring sensor connector.