Displaying & Reading Trouble Codes

Note: For detailed instruction and other diagnostic methods using the scan tool, refer to the scan tool manual.

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
- Quick Test 4.0-Continuous Memory
- Quick Test 5.0-Key On, Engine Running
- Special Test Mode
+ Wiggle Test
+ Output Test Mode

- PCM Reset Mode
- Clearing DTCs
- OBD II Drive Cycle
- Other NGS Features
- Other diagnostic methods include the following.
+ Parameter Identification (PID) Access Mode
+ Freeze Frame Data Access Mode
+ Oxygen Sensor Monitor Mode