Specifications

21
Testing Testing Engine Systems
The services always alternate between “Oil” (first) and “Inspection” (second). Services can be
reset early without affecting the time to the next service (as with SIA II) because the calculation is
not mileage based. However, as with SIA III, resetting a service early means that all subsequent
services will be skewed according to that service.
NOTE:
i Note the following regarding SIA IV:
• The SIA IV system can not be reset again until the vehicle has consumed at least 2½ gallons
of fuel.
• SIA IV will not allow a reset of the service not currently displayed (OIL or INSPECTION). It will
only reset the service that is currently displayed with miles remaining to the next service.
The following sections provide information about resetting the oil service and inspection service
lamps. For a shortcut to these tests, see “Quick Vehicle ID for Service Lamps Reset” on page 5.
Reset Oil or Inspection Service Lamps—Scan Tool Procedures
Use the following procedures for vehicles up to the 2000 model year, except models without the
20-pin underhood connector.
z To reset the oil or inspection service lamps:
1. From the Main Menu select Service Reset > Select Service Reset (Automatic).
2. Select Reset Oil Service or Reset Inspection Service from the menu.
NOTE:
i Once the scan tool has reset the oil service lamp, it cannot be returned to its previous state. Make
sure that this lamp needs to be reset before performing this function.
3. Make sure the ignition switch is in the on position and that the engine is not running.
4. Follow the on-screen instructions and select as needed to continue.
A “completed” message displays once the lamp has been reset.
5. Exit and return to the menu.
Use the following scan tool procedure for 2000 and later vehicles without the underhood 20-pin
connector and some vehicles that have the underhood connector and communicate with the
instrument cluster.
z To reset the oil or inspection service lamps:
1. From the System Selection menu, select Instrument Cluster.
The Main Menu displays.
2. Select Functional Tests.
The Functional Tests menu displays.
3. Select Special Tests.
4. Select Reset Oil Service or Reset Inspection.