Scan Tool Testing and Procedures
Data Link DiagnosticsNOTE: The ignition switch must be in RUN position or test will fail. This test is used to verify the proper operation of communication circuit of each module on the multiplex communication network or diagnostic communication network or diagnostic communication network.
1. Perform New Generation Star Tester Hookup and Vehicle Selection as outlined.
2. Rotate dial to menu item "Diagnostic Data Link" and press trigger.
3. If results of circuit 914 (+) = 0000 and circuit 915 (-) = 0000, then the Multiplex Communication Network link test passed. If non-zeros returned, then go to Network Diagnostic Trouble Code (DTC) Index.
4. If results of circuit 70 (LB/W) = 0, then the Diagnostic Communication Network Link Test passed. If non-zeros returned, then go to Network Diagnostic Trouble Code (DTC) Index.
On-Demand Self-Test
NOTE: This test is used to verify operation of module being tested.
1. Perform New Generation Star Tester Hookup and Vehicle Selection as outlined.
NOTE: The ignition switch must be in RUN position or test will fail.
2. Rotate dial to menu item Diagnostic Data Link and press trigger.
3. Select module to test by rotating dial to highlight module and press trigger.
4. Menu item Diagnostic Test Modes is highlighted. Press trigger.
5. Rotate dial to highlight menu item On-Demand Self Test. Press trigger, then press start (Button 3).
6. Prepare the vehicle for entry condition as specified for each module - press trigger.
Retrieve/Clear Continuous DTCs
1. Perform New Generation Star Tester Hookup and Vehicle Selection as outlined.
NOTE: The ignition switch must be in RUN position or test will fail.
2. Rotate dial to menu item Diagnostic Data Link and press trigger.
3. Select module to test by rotating dial to highlight module and press trigger.
4. Menu item Diagnostic Test Modes is highlighted. Press trigger.
5. Rotate dial to menu item Retrieve/Clear ConUnuous DTC, press trigger, then press start (Button 3).
6. Clear individual DTC from selected module, highlight DTC by rotating dial then press Button 8.
7. Clear all DTCs from selected module, press Button 7.
Retrieve PID Information
NOTE: This test is used to verify operation of input circuitry to the module being tested. The ignition switch must be in RUN position or test will fail.
1. Perform New Generation Star Tester hookup and vehicle selection as outlined.
2. Rotate dial to menu item Diagnostic Data Link and press trigger.
3. Select module by rotating dial to highlight module and press trigger.
4. Rotate dial to highlight menu item PID/Data Monitor and Record, press trigger.
5. Select PID acronyms by rotating dial to highlight a PID and then press trigger. Repeat this process until all PIDs are selected. (* - indicates that a PID has been selected.)
6. Press Button 7 to view all selected PIDs.
Diagnostic Commands
NOTE: This test is used to verify the operation of the output circuitry of the module being tested. The ignition switch must be in RUN position or test will fail.
1. Perform New Generation Star Tester Hookup and Vehicle Selection as outlined.
2. Rotate dial to menu item Diagnostic Data Link and press trigger.
3. Select module by rotating dial to highlight module and press trigger.
4. Rotate dial to highlight menu item Active/Command Modes, press trigger.
5. Rotate dial to selected command and press trigger. Command the output by rotating dial and pressing trigger as needed.
Retrieve Module Identification
NOTE: Refer to New Generation Star (NGS) Tester Manual for more details.
NOTE: This test is used to verify the correct version level of the module being tested. The ignition switch must be in RUN position or test will fail.
1. Perform New Generation Star Tester Hookup and Vehicle Selection as outlined.
2. Rotate dial to menu item Diagnostic Data Link and press trigger.
3. Select module by rotating dial to highlight module and press trigger.
4. Rotate dial to highlight menu item Module Identification, press trigger.
New Generation Star Tester Driven Diagnostics
Vehicle Set Up
Perform the following vehicle set-up prior to running any New Generation Star tests:
- Ignition switch in RUN
- Vehicle transmission range (TR) position in P (PARK)
- Driver seat not occupied
- Parking brake must be applied
- All passenger compartment, hood and luggage compartment doors closed
- All switches in the nominal OFF position
NOTE: Do not touch any handle, control or switch that may produce a module input unless instructed to do so by New Generation Star program.
1. Hookup New Generation Star Tester and perform vehicle selection. Use diagnostic procedure outlined under New Generation Star Tester Operation, New Generation Star Tester Hookup and Vehicle Selection.
2. Perform Link Dianostics Test to check the Multiplex Communication Network. Use diagnostic procedure outlined under New Generation Star Tester Operation, Multiplex Communication Network Data Link Diagnostics Test. If the MCN Data Link Diagnostics Test passed and concern(s) still remains, then go to Step 3, if data link diagnostic test did not pass go to Multiplex Communication Network DTC Index or Diagnostic Communication Network DTC Index.
3. Retrieve continuous DTCs from selected module. Use diagnostic procedure outlined under New Generation Star Tester Operation, Retrieve/Clear Continuous DTCs.
4. Record all continuous DTCs, then clear all DTCs from the selected module using the diagnostic procedure outlined under New Generation Star Tester Operation, Retrievel Clear Continuous DTCs.
5. Perform On-Demand Self-Test on the selected module. Use diagnostic procedure outlined under New Generation Star Tester Operation, On-Demand Self-Test.
NOTE: The Self-Test program for an individual module may produce observable outputs.
6. Record all On-Demand Self-Test DTCs and go to MODULE DTC INDEX Table to continue diagnosis. If On-Demand Self-Test passed and concern(s) still remains, then go to Step 7.
7. Use the continuous DTCs recorded in Step 4 and go to MODULE DTC INDEX Table to continue diagnosis. If no continuous DTCs retrieved in Step 4, then concern(s) is not related to Multiplex Communication Network. Return to referred section for non-network related problem(s).
Wiggle Test
The wiggle test is designed to help identify and locate intermittent failures in the vehicle wiring harness and system components. Upon entering wiggle test, several inputs and outputs of the module are monitored for change of state. When a state change is encountered, an audible tone can be heard and/or a diagnostic trouble code (DTC) will be displayed on the New Generation Star (NGS) tester 007-00500. For modules which store DTCs, the DTC description will determine an open circuit, short to ground or a short to B+. By initiating wiggle test and pulling on different areas of the vehicle harness, intermittent open and short circuits can be located and serviced.
1. Perform New Generation Star Tester Hookup and Vehicle Selection as outlined.
NOTE: The ignition switch must be in RUN position or test will fail.
2. Rotate dial to menu item Diagnostic Data Link and press trigger.
3. Select module to test by rotating dial to highlight module and press trigger.
4. Menu item Diagnostic Test Modes is highlighted. Press trigger.
5. Rotate dial to highlight menu item Wiggle Test. Press trigger, then press start (Button 3).