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Symptom: PCM MESSAGES NOT RECEIVED - MHSAPM When Monitored and Set Condition: PCM MESSAGES NOT RECEIVED - MHSAPM When Monitored: With the ignition in run. Set Condition: The module does not receive any messages from the PCM. Time to mature for the MHSAPM is 2 seconds. Time to mature for the IPM is 2 seconds. POSSIBLE CAUSES MEMORY/HEATED SEAT ADJUSTABLE PEDAL MODULE ATTEMPT TO COMMUNICATE WITH THE PCM PCI BUS CIRCUIT OPEN POWERTRAIN CONTROL MODULE TEST ACTION APPLICABILITY 1 Turn the ignition on. t, enter Instrument Cluster, System Tests then PCM Monitor. Does the DRBIII t display: PCM is active on BUS? All Yes → Erase the DTC, if DTC resets, replace the Memory/Heated Seat Adjustable Pedal Module. No → Go To 2 2 Turn the ignition on. t, attempt to communicate with the PCM. Was the DRBIII t able to communicate with the PCM? All Yes → Go To 3 No → Refer to the communication category and perform the appropriate symptom. 1005 POWER SEATS |