Pinpoint Tests: Notes

U0103 

DTC Fault Trigger Condition-PCM 

DTC	Description	Fault Trigger Conditions
U0103	Lost Communication With Gear Shift Control Module A	The PCM sets this DTC if data messages from the GSM module through the GWM are missing.

Normal Operation and Fault Conditions 

REFER to: Communications Network - System Operation and Component Description .

Possible Sources 

• Communications network concern
• GSM module
• GWM
• PCM