Vehicle Speed Sensor Test

NOTE: Before entering this test, the vehicle drive wheels must be raised off the floor.

The final item on the menu the EVO control module will output to the Star Tester is DTC 34. This represents asking the service technician if they would like to "Perform vehicle speed sensor test?". If the service technician releases the HOLD/TEST button for one second, then latches the HOLD/TEST button down again within eight seconds after receiving DTC 34, the EVO control module will enter this test. Once this test has been entered and with steering wheel rotation rate = 0, the control module will wait 30 seconds for the service technician to make the vehicle speed go above 24 km/h (15 mph). If a vehicle speed of greater than 24 km/h (15 mph) is not detected within this time, the control module will store DTC 35 in memory and complete this test by outputting DTC 35 to the Star Tester which represents "Vehicle speed greater than 15 mph not detected." If the vehicle speed sensor hardware is operating properly, the control module will complete this test by outputting DTC 26 to the Star Tester which means "Test passed." If DTC 35 is received, GO to DTC 35.
After completion of this test, the EVO control module will go back to test No. 1 and continuously cycle through the menu of tests until the service technician either unlatches the HOLD/TEST button until the control module exits this mode or removes power to the EVO control module by turning the ignition switch OFF.