On-Board Diagnostics With Diagnostic Tool

WARNING: This page is about a different car, the 2003 Mercury Marauder, 2003 Mercury Grand Marquis, and 2003 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: For detailed instruction and other diagnostic methods using the scan tool, refer to the scan tool tester manual and SELF-DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE . These quick tests should be used to diagnose the powertrain control module (PCM) and should be carried out in order.

Quick Test 1.0 - Visual Inspection
Quick Test 2.0 - Set Up
Quick Test 3.0 - Key On, Engine Off (KOEO)
Quick Test 4.0 - Continuous Memory
Quick Test 5.0 - Key On, Engine Running (KOER)
- Special Test Mode
- Wiggle Test
- Output Test Mode
- PCM Reset Mode
- Clearing DTCs
- OBD II Drive Cycle
Other Scan Tool Features

For further information on other diagnostic testing features using the scan tool, refer to SELF-DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE . Other diagnostic methods include the following:

Parameter Identification (PID) Access Mode
Freeze Frame Data Access Mode
Oxygen Sensor Monitor Mode