Output Diagnostic Test Mode (Circuit Actuation Tests)

This mode is used to turn a specific circuit on and off in order to check it. ATM test codes are used in this mode.
1. Put the system into the diagnostic test mode and wait for 55 to appear on the readout box display.
2. Press and hold the ATM button on the readout box until the disired ATM test code appears on the display and then release the button.
3. The computer will turn the selected circuit on and off at 250 milleseconds intervals for 5 minutes and then turn the test off. To stop the test before the 5 minute period, turn the ignition switch off.




CIRCUIT ACTUATOR TEST CODES
Code 91--Indicates that the oxygen feedback solenoid is activated.
Code 92--Indicates that the shift indicator light on manual transmission equipped vehicles or transmission unlock relay on automatic transmission equipped vehicles is activated.
Code 93--Indicates that the V.O.S. solenoid solenoid is activated.
Code 96--Indicates that the cooling fan relay is activated.
Code 97--Indicates that the electronic throttle control solenoid is activated.
Code 98--Indicates canister purge solenoid is activated.