Pinpoint Test B : DTC (Diagnostic Trouble Code) P0563: Notes
Refer to Wiring Diagram Transmission Controls for schematic and connector information.
Normal Operation and Fault Conditions
The GSM requires an operating voltage between 9 and 16 volts. The GSM receives this voltage from the BCM and has a single ground circuit. Excessive resistance or an open in one or more of these circuits, a discharged battery or a inoperative charging system results in the GSM setting a DTC.
An overcharging condition in the charging system results in the GSM module setting a DTC. This DTC may also set in the GSM module due to battery charging or vehicle jump starting events.
GSM: DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| P0563 | System Voltage High: Circuit Voltage Above Threshold | This DTC sets in continuous memory if the voltage supplied to the GSM module is above 16 volts for more than 3 seconds. |
Possible Sources
- Charging system concern
- GSM module