LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2000 >> Chevy Express G2500, Van Cargo Extended, 6.5 F >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics - Diesel >> Diagnostic Tests >> DTC P1630: Theft Deterrent Pcm In Learn Mode >> Circuit Description

Circuit Description

This test checks for the enable password learning flag indicating PCM is in the learn password mode. This mode allows PCM to learn the password from the Passlock® module at assembly or when being serviced. The password needs to be learned whenever PCM or Passlock® module is replaced. DTC will set when ignition is on and enable learning flag is set.