Without Air Suspension
EVO Steering Diagnosis-Without Air SuspensionWhen the engine is started and the HOLD/TEST button is latched down, the EVO control module will respond by sending a code 20 to the Super Star II Tester which represents "Diagnostics mode entered." If Diagnostic Trouble (DTC) 20 is not displayed, GO to Pinpoint Test A. Test A
Once this mode is entered, the EVO module will continuously cycle through a menu of five tests. The EVO control module will scroll through these tests, waiting eight seconds before proceeding to the next test. If at any time in the eight-second period the Super Star II Tester line is toggled high by unlatching the HOLD/TEST button for at least one second but less than eight, then toggled back low by relatching the HOLD/TEST button, the EVO control module will enter and run that selected test. If the HOLD/TEST button is unlatched for the entire eight seconds in between any of the tests, the EVO control module will exit diagnostic mode and resume operation in its normal operating state.
If power is removed at any time while the EVO control module is in diagnostic mode, the EVO control module will exit diagnostic mode and resume operation in its normal operating state when power is reapplied.
The sequence and definition of the five tests that the technician can carry out are as follows:
1. Reading the fault codes. The first item on the menu the EVO control module will output to the Super Star II Tester is DTC 21.This represents asking the technician whether he/she would like to "Read fault codes?" stored in memory. If the technician releases the HOLD/ TEST button for one second, then latches the HOLD/TEST down again within eight seconds after receiving DTC 21, the EVO control module will enter this test, output the fault DTCs stored in memory and complete this test by outputting DTC 22 to the Super Star II Tester which signals end of test.
2. Clearing the fault codes. The second item on the menu the EVO will output to the Super Star II Tester is DTC 23. This represents asking the technician whether he/she would like to "Clear fault codes?" stored in memory. If the technician releases the HOLD/TEST button for one second, then latches the HOLD/TEST button down again within eight seconds after receiving DTC 23, the EVO control module will enter this test, clear the fault DTCs and complete this test by outputting DTC 24 to the Super Star II Tester which means DTCs cleared.
3. Actuator Output Test. The third item on the menu the EVO control module will output to the Super Star II Testers DTC 25. This represents Wing the technician whether he/she would like to "Carry out actuator test?" If the technician releases the HOLD/TEST button for one spend, then latches the HOLD/TEST button down again within eight seconds after receiving DTC 25, the EVO control module will enter this auto test and automatically test for the actuator faults. If faults exist, the control module will store the appropriate codes in memory, output these codes to the Super Star II Tester and complete this test by outputting DTC 22 to the Super Star II Tester which signals end of test. If no faults exist, the control module will complete this test by outputting DTC 26 to the Super Star II Tester, which represents "Test passed."
4. Steering Wheel Sensor Test. The fourth item on the menu the EVO control module will output to the Star Tester is DTC 32. This represents asking the technician whether they would like to "Carry out steering wheel sensor test?" If the technician releases the HOLD/TEST button for one second, then latches the HOLD button down again within eight seconds after receiving DTC 32, the EVO control module will enter this test. Once this test has been entered and with vehicle speed = 0 the control module will wait - seconds for the technician to rotate the steering wheel at least 40 degrees in one direction only. If the steering wheel rotation is not detected within this time, the control module will store DTC 33 in memory and complete this test by outputting DTC 33 to the Super Star II Tester which represents "Steering wheel rotation not detected." If the steering wheel sensor hardware is operating properly, the control module will complete this test by outputting DTC 26 to the Super Star II Tester which means "Test passed." If DTC 33 is received, GO to Pinpoint Test K. Test K
NOTE: Before entering this test, the vehicle drive wheels must be raised off the floor.
5. Vehicle Speed Sensor Test. The final item on the menu the EVO control module will output to the Super Star II Tester is DTC 34 This represents asking the technician whether he/she would like to "Carry out vehicle speed sensor test?" If the 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 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 Super Star II Tester which represents "Vehicle speed greater than 15 mph not defected. If the vehicle speed sensor hardware is operating properly, the control module will complete this test by outputting DTC 26 to the Super Star II Tester which means "Test passed." If DTC 35 is received, GO to Pinpoint Test L.
6. After completion of this test, the EVO module will go back to test No. 1 and continuously cycle through the menu of tests until the 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.