Circuit Actuation Test Mode (ATM)
- Run system through Diagnostic Test Mode and wait for code "55" to display. Press ATM button on readout tool to activate display. ATM test codes will appear on readout tool. Hold button down until desired display appears.
- The SCC will turn selected circuit on and off for up to 5 minutes, or until ATM button is pressed again (or ignition switch turned off). If ATM button is not pressed again, SCC will shut system off after 5 minutes.
ATM TEST DISPLAY CODES
| Code | System Tested |
|---|---|
| 91 | O(2) Feedback Solenoid |
| 92 | Shift Indicator Light (Man Trans. only) |
| 93 | Canister Purge Solenoid |
| 96 | Fan Relay |
| 97 | Electronic Throttle Control Solenoid |
| 98 | Vacuum Operated Secondary Control Solenoid |