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Symptom List: SEAT HEAT LOAD SHED CHARGING UNDER VOLTAGE - MHSAPM Test Note: All symptoms listed above are diagnosed using the same tests. The title for the tests will be SEAT HEAT LOAD SHED When Monitored and Set Condition: SEAT HEAT LOAD SHED CHARGING UNDER VOLTAGE - MHSAPM When Monitored: With the engine running. Set Condition: When the Memory/Heated Seat Adjustable Pedal Module receives a low charging system voltage message over the PCI Bus. CHARGING VOLTAGE HIGH MESSAGE - MHSAPM When Monitored: With the engine running. Set Condition: When the Memory/Heated Seat Adjustable Pedal Module receives a high charging system voltage message over the PCI Bus. CHARGING VOLTAGE LOW MESSAGE - MHSAPM When Monitored: With the engine running. Set Condition: When the Memory/Heated Seat Adjustable Pedal Module receives a low charging system voltage message over the PCI Bus. POSSIBLE CAUSES PCM TROUBLE CODES STORED CODE COMMUNICATION PROBLEMS MEMORY/HEATED SEAT ADJUSTABLE PEDAL MODULE INTERMITTENT PROBLEM TEST ACTION APPLICABILITY 1 Turn ignition on. t read Engine DTCs. Are there any Charging System DTC’s set in the Powertrain Control Module? All Yes → Refer to POWERTRAIN symptom list for related CHARGING SYSTEM diagnostic trouble codes. No → Go To 2 449 ELECTRICALLY HEATED SYSTEMS |