DTC U1021: SCP Invalid Or Missing Data For Air Conditioning Clutch

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U1021 - SCP INVALID OR MISSING DATA FOR AIR CONDITIONING CLUTCH

Description :
Possible Causes:	Network DTC(s) occur during module-to-module communication concerns. Two types of network concerns can be categorized: Invalid data network concerns - data is transferred within the normal inter-module message, but contains known invalid data. The transmitting module logs a DTC related to the invalid data concern. Missing message network concerns - missing message concerns are logged by the module upon failure to receive a message from another module within a defined retry period.
Diagnostic Aids:	Carry out the on-board diagnostics for the associated network module. For additional information concerning the description and operation of the vehicle communication network, refer to the appropriate MODULE COMMUNICATIONS NETWORK article .
Application	Key On Engine Off	Key On Engine Running	Continuous Memory
All	Refer to the appropriate CLIMATE CONTROL SYSTEM - GENERAL INFORMATION & DIAGNOSTICS article .