RAM 2500 Truck 4WD V10-8.0L VIN W (1997)
Emissions Maintenance Light: Description and Operation
SYSTEM OPERATION
The Maintenance Required or Service Reminder Indicator (SRI) lamp is used on certain vehicles equipped with a heavy-duty emissions cycle
package. This lamp is intended to provide a reminder that certain scheduled vehicle emissions services and maintenance must be performed, as
required by federal emissions laws.
This lamp is not intended to indicate a warning, or that a state of emergency exists. However, when the lamp has been activated, the required
services and maintenance must be performed before the lamp can be legally reset.
CIRCUIT OPERATION
The Powertrain Control Module (PCM) provides ground for the Service Reminder Indicator (SRI) lamp on circuit G24. Circuit G24 connects to
cavity C18 of the PCM. Circuit F14 provides voltage for the lamp. The SRI lamp displays the message MAINT REQ'D.
Power for the SRI lamp is supplied on circuit F14. Ground for the lamp is controlled by the Powertrain Control Module (PCM) on circuit G24.
This circuit connects to cavity C18 of the PCM connector.
