DTCs Reading Procedures
READ DTCs PROCEDURE- Perform the "New Generation Star (NGS) tester hook-up procedure."
- Perform step 1 through step 9 below.
NOTE: 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 #10: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 DTC 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.
6. 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 DTC 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.
AFTER REPAIR PROCEDURE
1. After repairs have been made, connect SST (NGS tester) to the Data Link Connector.
2. Select Clear Codes function in GENERIC OBD II FUNCTIONS and clear DTCs.
3. Perform Self-Test to ensure customer's concern has been resolved.
PID/DATA MONITOR AND RECORD
1. Move the cursor to PID/DATA MONITOR AND RECORD. Press the trigger.
2. Move cursor to PID values to view. Press trigger.
3. Select START to begin.
4. When ready to capture and store the select PIDs, press trigger button.
5. Press trigger again when ready to save information.
6. The information is now located in the main recording area. Store to a viewing area before starting another recording or the data will be overwritten.
PLAYBACK OF STORED PIDs PROCEDURE
NOTE:
- Look for abnormal behavior or values that are clearly incorrect. Inspect the signals for abrupt or unexpected changes.
- Look for agreement in related signals.
- Make sure signals act in proper sequence.
1. Select VIEW RECORDER AREAS.
2. Select a view area.
3. Select up to the four PIDs to review in the table format or two PIDs to review in the graph mode.
4. Table format: Scroll through the PID data while analyzing the information. Look for sudden drops or spikes in the values.
Notice the major jump in the TP voltage while scrolling through the information. This example would require a smooth and progressive throttle pedal travel during a key ON and engine OFF mode.
5. Graph format: Scroll through the PID data while analyzing the information. Look for sudden drops or spikes in the linear lines showing the transformation of values to the line graph.
OUTPUT TEST MODE
1. Move the cursor to ACTIVE COMMAND MODES. Press the trigger key to enter this selection.
1. Move the cursor to OUTPUT TEST MODE. Press the trigger key to enter this selection.
3. Press MODE (Key #3) repeatedly to change the mode from ALL ON to LOW FAN, HIGH FAN and ALL OFF. Return the mode to ALL ON.
4. Press START (key #4) to run the fuel pump. Press STOP (Key #4) to turn off the fuel pump.
5. To open and close certain actuators in the emission system, press PIDS (key #7).
6. Press CLEAR (Key #5) to clear previous selected PIDS.
NOTE:
- To select desired PIDs, place the shaded bar over the item(s) and press trigger. A star symbol appears next to the item when it's selected. Press START (key #7). The selected PID(s) and values appear.
- You can only select 30 PIDs at a time.
7. Press START (Key #4) to turn on the fuel pump. Observe the values change from OFF to ON or from 0% to 100%. Press STOP (key #4) to turn off the fuel pump.
8. Press CANCEL.