DTC B1289 01 Video Display Brightness Control Signal Short to Battery
DTC B1289 02 Video Display Brightness Control Signal Short to Ground
DTC B1289 04 Video Display Brightness Control Signal Open Circuit
Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
The cost to diagnose the B1289 Cadillac code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.
The radio can control the video display brightness on vehicles equipped with Rear Seat Entertainment (RSE) video. The radio varies a Pulse With Modulated (PWM) signal to the rear entertainment video screen to command the screen brightness to the desired level. The Diagnostic Trouble Code (DTC) will set when the radio detects a short to voltage, short to ground, or an open/high resistance in the video display brightness control circuit 400 ms after the radio activates the remote enable circuit.
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