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Accessory Protocol Interface Module (APIM)

DTC INDEX

DTC Description Action
B1201:1C Steering Wheel Audio Switch Pack 2: Circuit Voltage Out of Range GO to PINPOINT TEST R .
B1201:63 Steering Wheel Audio Switch Pack 2: Circuit/Component Protection Time-Out GO to PINPOINT TEST R .
B1252:04 USB Port: System Internal Failure GO to PINPOINT TEST P .
B1252:11 USB Port: Circuit Short to Ground GO to PINPOINT TEST P .
B12B8:04 USB Port #2: System Internal Failure
NOTE: This DTC refers to USB port #2 on the APIM itself, which is not used.
  • INSPECT the APIM USB port #2 for damage and REMOVE any debris.
  • CLEAR the DTCs.
  • WAIT at least 10 seconds.
  • REPEAT the self-test.
  • If DTC B12B8:04 is retrieved again, Click here to access APIM HARDWARE TESTING .
B12B8:11 USB Port #2: Circuit Short To Ground
NOTE: This DTC refers to USB port #2 on the APIM itself, which is not used.
  • INSPECT the APIM USB port #2 for damage and REMOVE any debris.
  • CLEAR the DTCs.
  • WAIT at least 10 seconds.
  • REPEAT the self-test.
  • If DTC B12B8:11 is retrieved again, Click here to access APIM HARDWARE TESTING .
B1D79:01 Microphone Input: General Electrical Failure GO to PINPOINT TEST Z .
B1D79:11 Microphone Input: Circuit Short To Ground GO to PINPOINT TEST Z .
B1D79:12 Microphone Input: Circuit Short To Battery GO to PINPOINT TEST Z .
B1D79:13 Microphone Input: Circuit Open GO to PINPOINT TEST Z .
U0100:00 Lost Communication With ECM/PCM "A": No Sub Type Information GO to PINPOINT TEST AD .
U0140:00 Lost Communication With Body Control Module: No Sub Type Information GO to PINPOINT TEST AF .
U0151:00 Lost Communication With Restraints Control Module: No Sub Type Information GO to PINPOINT TEST AG .
U0155:00 Lost Communication With Instrument Panel Cluster (IPC) Control Module: No Sub Type Information GO to PINPOINT TEST AI .
U016A:00 Lost Communication With Global Positioning System Module: No Sub Type Information GO to PINPOINT TEST AM .
U0184:00 Lost Communication With Radio: No Sub Type Information GO to PINPOINT TEST AO .
U0255:00 Lost Communication With Front Display Interface Module: No Sub Type Information
NOTE: This DTC is only applicable for vehicles without navigation. For vehicles with navigation, disregard this DTC.
GO to PINPOINT TEST AR .
U0256:00 Lost Communication With Front Controls Interface Module "A": No Sub Type Information GO to PINPOINT TEST AS .
U0422:00 Invalid Data Received From Body Control Module: No Sub Type Information RETRIEVE and FOLLOW DTCs present in the SJB. REFER to MULTIFUNCTION ELECTRONIC MODULES .
U0423:00 Invalid Data Received From Instrument Panel Control Module: No Sub Type Information RETRIEVE and FOLLOW DTCs present in the IPC. REFER to INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES .
U2100:00 Initial Configuration Not Complete: No Sub Type Information CHECK the vehicle service history for recent service actions related to this module. This DTC sets due to incomplete or incorrect PMI procedures. If there have been recent service actions with this module, REPEAT/PERFORM the PMI procedure as directed by the diagnostic scan tool. If there have been no recent service actions, I Click here to access APIM HARDWARE TESTING .
U2101:00 Control Module Configuration Incompatible: No Sub Type Information CHECK the vehicle service history for recent service actions related to this module. This DTC sets due to incomplete or incorrect PMI procedures. If there have been recent service actions with this module, REPEAT/PERFORM the PMI procedure as directed by the diagnostic scan tool. If there have been no recent service actions, Click here to access APIM HARDWARE TESTING .
U3000:04 Control Module: System Internal Failure GO to PINPOINT TEST J .
U3000:41 Control Module: General Checksum Failure CLEAR the DTCs. REPEAT the self-test. If DTC U3000:41 is still present, Click here to access APIM HARDWARE TESTING .
U3000:42 Control Module: General Memory Failure CLEAR the DTCs. REPEAT the self-test. If DTC U3000:42 is still present, Click here to access APIM HARDWARE TESTING .
U3000:88 Control Module: Bus Off
NOTE: Network communication/missing message DTCs may result from intermittent concerns such as damaged wiring or low battery voltage occurrences. Additionally, vehicle repair procedures such as module reprogramming often set these DTCs. To avoid repeat network concerns, Inspect for damaged or corroded wiring at the APIM. Test the vehicle battery. Refer to Charging Systems in CHARGING SYSTEM - GENERAL INFORMATION . Replacing a module to resolve a network DTC is unlikely to resolve the concern.
The module could not communicate on the network at a point in time. The fault is currently not present. CLEAR the DTC. REPEAT the network test with the diagnostic scan tool.
U3003:16 Battery Voltage: Circuit Voltage Below Threshold GO to PINPOINT TEST AT .
U3003:17 Battery Voltage: Circuit Voltage Above Threshold GO to PINPOINT TEST AU .
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