Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
To diagnose the B1448 Cadillac code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.
The Body Control Module (BCM) supplies accessory voltage as required for the Rear Wiper Motor and controls the Rear wiper and washer relay through the accessory voltage circuit from BCM harness. The Diagnostic Trouble Code (DTC) will set only when the output is activated and there is a short to ground in the accessory voltage circuit.
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