Bonjour;
je voudrais charger un programme dans le pic18F452 en utilisant MPLAB ICD2,

la connexion se passe normalement:

Connecting to MPLAB ICD 2
...Connected
Setting Vdd source to target
ICDWarn0020: Invalid target device id (expected=0x21, read=0x0)
...Reading ICD Product ID
Running ICD Self Test
...Passed
MPLAB ICD 2 Ready


Par contre, quand j'essai de charger le programme, j'ai l'erreur suivante:


Programming Target...
ICDWarn0052: MPLAB ICD 2 cannot validate a target device. Please make sure that the target device is connected and properly powered. Select "OK" to continue, or "CANCEL" to abort the operation
ICD0200: Operation Aborted (Warning 51).
ICD0275: Programming failed.
MPLAB ICD 2 Ready
Verifying...
ICDWarn0052: MPLAB ICD 2 cannot validate a target device. Please make sure that the target device is connected and properly powered. Select "OK" to continue, or "CANCEL" to abort the operation
ICD0200: Operation Aborted (Warning 51).
MPLAB ICD 2 Ready


j'ai vérifié le câblage et tout est bon???!!

merci d'avance.