MPLAB® PICkit™ 4 Debugger Indicator Light Strip
The expected start-up sequence for the MPLAB® PICkit™ 4 debugger is:
Purple - steady on for approximately 4 seconds
Blue - steady on. The debugger is ready.
The indicator light strip has the following significance.
Table 1: Typical Light Strip Descriptions
| Color | Description |
|---|---|
| Blue | Power is connected and debugger is on standby. |
| Orange | Power target circuit from the PICkit 4 debugger checked. |
| Green | Power target circuit from the PICkit 4 debugger unchecked. |
| Red | Lit when the debugger has failed. |
Table 2: Additional Light Strip Descriptions
| Normal Modes | Description |
|---|---|
| Blue | Power is connected; debugger in standby. |
| Orange | Power target circuit from the PICkit 4 debugger checked (see the "Power Options" page). |
| Green | Power target circuit from the PICkit 4 debugger unchecked (see the "Power Options" page). |
| Purple | Bootloader is running. |
| Purple | Fast blink indicates the time window for forcing the debugger into Bootloader mode. |
| Yellow | Debugger is busy. |
| Red | An operation has failed. |
Table 3: Bootloader Error Descriptions
| Bootloader Errors | Description |
|---|---|
| Red | Slow blink indicates problem accessing the debugger’s serial EEPROM. |
| Red | Fast blink indicates that Bootloader API commands cannot be processed. |
| White | Fast blink indicates that a runtime exception occurred in the tool firmware. |