Viper GTS V10-8.0L VIN E (1999)
Both front and rear caster angle on the Viper is read. This is accomplished by reading caster directly off the front and rear knuckles through
inclinometer sensors attached to the DRB III scan tool, rather than using the alignment machine's sweep method. Use Special Tools 6989, 6996, 6915,
and 6916 which are included in the 96 Essential Viper Alignment Package.
NOTE: It is necessary to have a DRB III with an attached PEP module capable of reading inclinometers.
Cable Connections At DRB III
1. Plug the cable from the switch box, Special Tool 6996, into the pep module connector on the DRB III marked "INCL".
2. Plug the power cable (supplied with the DRB III kit) into the DRB III power connector marked "VEHICLE".
3. Attach the two inclinometers, Special Tool 6989, to the switch box. Only two inclinometers are supplied and should be used as a pair to measure
either rear caster or front caster, one at a time.
4. Attach the power cable from the DRB III to the vehicle data connector.
5. Select the Stand Alone DRB III option from the Main Menu screen.
6. Select the Inclinometer option from the Stand Alone Main Menu.
7. Select the Read/Display Angle option from the Inclinometer Main Menu. This option is used to zero the inclinometers before use on the vehicle.
The inclinometer, Special Tool 6989, must be zeroed (calibrated) prior to each time it will be used to read the caster angle on the vehicle. This
screen shows the readout for the left and right inclinometers.
8. Press F3 to show both inclinometers.
Zero The Inclinometers
9. Zero the inclinometers: Place both inclinometers together on a known flat, level surface, such as the alignment rack, with the knurled ends of the
fastening screws facing upward. Press F2. This zeros the inclinometers in one direction. Rotate the inclinometers 180 degrees in place, then press
