On-Board Diagnostic Test Procedures
READING DTCs PROCEDURENOTE: Start engine and bring up to operating temperature before running OBD Test.
1. Perform the necessary vehicle preparation and visual inspection. Hook-up the SST (NGS tester) to the vehicle.
2. Move the cursor to VEHICLE AND ENGINE SELECTION.
3. Move the cursor to SELECT NEW VEHICLE YEAR & MODEL. Press the trigger key to enter this selection.
4. Move the cursor to 1999 - VIN #1O:X. Press the trigger key to enter this selection.
5. Move the cursor to appropriate model. Press the trigger key enter this selection.
6. The vehicle selection screen showing the selected vehicle will be displayed. Move the cursor to the vehicle selected. Press the trigger key.
7. Move the cursor to DIAGNOSTIC DATA LINK in the main menu screen. Press the trigger key to enter into menu system diagnostics.
8. Move the cursor to PCM. Press the trigger.
9. Move the cursor to DIAGNOSTIC TEST MODE.
Press the trigger key to enter this selection.
10. Move the cursor to appropriate mode. Press the trigger key to enter this selection.
11. Retrieve DTCs as follows:
1. Continuous DTCs
2. KOEO DTCs
3. KOER DTCs
READ/CLEAR CONTINUOUS DTC SELF-TEST PROCEDURE
NOTE:
- The first test to run is Read/Clear Continuous DTC Self-Test. Record the DTCs on a piece of paper and proceed to the KOEO Self-Test.
- The purpose of recording the continuous DTCs at this time to make sure they are not unintentionally cleared during any KOEO or KOER service. KOEO and KOER codes are always addressed before continuous codes.
1. Perform the "New generation star (NGS) tester hook-up procedure".
2. Perform the "Reading DTCs procedure".
3. Move the cursor to READ/CLEAR CONTINUOUS DTCs. Press the trigger key to enter this selection.
4. Turn key on. Press START.
5. Follow operating instruction from the menu.
6. If there are DTC(s), refer to Diagnostic Trouble Code Table for further diagnosis information. After repairs, clear DTCs. Press "C-ALL" (Key #7) button and press trigger.
7. If there are no codes, press CANCEL. Perform KOEO Self-Test.
KEY ON ENGINE OFF (KOEO) SELF-TEST PROCEDURE
NOTE: Make sure the A/C switch is OFF during KOEO Self-Test. If the A/C switch is ON during this test, DTC P1464 will be indicated on the NGS tester.
1. Perform the "New generation star (NGS) tester hook-up procedure".
2. Perform the "Reading DTCs procedure".
3. Move the cursor to KOEO ON-DEMAND SELF-TEST. Press the trigger key to enter this selection.
4. Follow operating instruction from the menu.
5. Note any KOEO DTCs. Press CANCEL. Perform KOER Self-Test.
KEY ON ENGINE RUNNING(KOER) SELF-TEST PROCEDURE
NOTE:
- Make sure the A/C switch is OFF during KOER Self-Test. If the A/C switch is ON during this test, DTC P1464 will be indicated on the NGS tester.
- The brake pedal must be depressed and released after KOER Self-Test is initiated. If not performed, DTC P1703 will be indicated on the NGS tester.
- The steering wheel must be turned to the right and left after KOER Self-Test is initiated. If not performed, DTC P1650 will be indicated on the NGS tester.
- Start the engine and bring up to normal operating temperature before running the KOER Self-Test.
1. Perform the "New generation star (NGS) tester hook-up procedure".
2. Perform the "Reading DTCs procedure".
3. Move the cursor to KOER ON-DEMAND SELF-TEST. Press the trigger to enter this selection.
4. Start engine and bring up to normal operating temperature. Press START.
5. Follow operating instruction from the menu and perform Brake On/Off (BOO), O/D OFF switch and PSP cycling test, if equipped.
6. Note any KOER DTCs.
7. Press CANCEL several times to return to the main menu.