Circuit Description

Generator on this vehicle has fault detection capability built into regulator. BCM supplies 12 volts on circuit No. 25, and monitors field voltage on circuit No. 23.

Code B410 sets if following conditions exist:

• Engine running
• Generator enable line is low

Or if following conditions exist:

• Engine running
• Generator enable line high
• Generator field input is less than 2 percent

Or if following conditions exist:

• Ignition on, engine not running
• Generator enable line is high

Or if following conditions exist:

• Ignition on, engine not running
• Generator enable line is low
• Generator field input is less than 2 percent

Code B410 causes GENERATOR PROBLEM message to be displayed on DIC and NO CHARGE telltale to light on IPC.