Test Procedure
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 1997 Mercury Grand Marquis, 1997 Lincoln Town Car, 1997 Ford Crown Victoria, 1996 Mercury Grand Marquis, and 1996 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
- Ensure AUTO TEST has been performed. A Diagnostic Trouble Code (DTC) must be displayed before entering this test. If DTC's are displayed, go to next step. If no DTC's are displayed, repeat AUTO TEST . If AUTO TEST cannot be performed, go to TEST S .
- Release scan tester button to HOLD (up) position. Wait 20 seconds. Depress scan tester button to TEST (down) position. Code 23 should be displayed, then Codes 26, 31, 32 and 33 will be displayed in order. Each code will be displayed about 15 seconds. If codes are displayed, go to next step. If no codes are displayed, release scan tester button to HOLD position. Wait 20 seconds and depress button to TEST position. If codes are still not displayed, repeat AUTO TEST.
- Within 4 seconds after desired code of desired function appears, release scan tester button to HOLD position. See FUNCTION TEST CODES table. As long as scan tester button is in HOLD position, function test will continue. If all function tests pass, return to test from which you were directed here. If any function test(s) fail, repair or replace as necessary. See DIAGNOSTIC TROUBLE CODE DIRECTORY and perform appropriate TEST under SYSTEM TEST.
FUNCTION TEST CODES
| Code | Function |
|---|---|
| 23 | Vent Rear |
| 26 | Compress Rear |
| 31 | Cycle Compressor |
| 32 | Cycle Vent Solenoid |
| 33 | Cycle Air Spring Solenoid Valves |