Monitor Condition Buick Skylark VII

Monitor Condition

Engine speed at 500 RPM or greater.

Ignition voltage less than 10 volts or more than 16 volts for 5.3 seconds.

PCM turns on MIL. PCM disables EVAP canister purge system, cruise control and TCC solenoid. PCM disables EGR solenoid and long term fuel trim.

Note. Test numbers refer to numbers on diagnostic chart.

1. Checks PCM data for parameter PD10. If voltage is 16 volts or greater, generator in not controlling voltage.
2. Checks for proper charging system operation.
3. Checks for proper charging system regulation with no electrical loads on generator.

Scheme 148

Scheme 149