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Home >> Cadillac >> 2000 >> DeVille Base >> Repair and Diagnosis >> Body & Frame >> Windows >> Power Window System >> Diagnostic Tests >> DTC U1161: Loss Of PDM Serial Data, DTC U1162: Loss Of LRDM Serial Data, DTC U1163: Loss Of RRDM Serial Data Or DTC U1170: Loss Of Driver's Door Switch Assembly Serial Data >> Circuit Description
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Circuit Description

DTC will run when Driver Door Module (DDM) is powered and DTCs B1327, B1328, U1300 and U1301 do not have current status. DDM has received an input or a class 2 wake-up message. See appropriate BODY CONTROL MODULES article.

DTC is set when a response message is not received for the expected door module after 2 requests.

DTC will clear when DDM receives response message from failed door module or when ignition is turned off. History DTC must be cleared with scan tool.

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