Skylark L4-144 2.4L DOHC VIN T SFI (1997)
Volt Meter Gauge: Description and Operation
The Volts Indicator is controlled by both the PCM and the IPC. The IPC illuminates the light when it is initially started up (ignition in "OFF/UNLOCK,"
"RUN," or "CRANK" positions) until the PCM sends the generator information via serial data, then the PCM may light the telltale. The PCM may light
the telltale when the engine is running and the charging system voltage falls below 10 volts or more than 16 volts indicating service is required. During a
loss of serial data (ignition m OFF/UNLOCK"), this telltale will light steady.
