Scan Tool Testing and Procedures

SCAN TOOL HOOK-UP

- Connect the scan tool to the diagnostic connector located in the engine compartment. The separate red clip is connected to the positive post of the battery.
- With the scan tool properly connected, all character positions on the display should briefly illuminate, and the copyright message should appear.
NOTE: At any time after the copyright screen, the user may press the F3 key for help.
- A commonly reported problem is that the scan tool screen is blank. If the screen is blank after the scanner is attached to the vehicle, do the following:
1. Make sure all cable connections are properly seated and fit snugly.
2. Make sure the cables are in good condition (no broken or shorted wires).
3. Make sure the cartridge is installed properly into the scan tool.
4. Try the scan tool on another vehicle. If the scan tool screen is still blank, have the unit repaired. If it now performs properly, continue with step 5.

Data Link Connector Identification:

5. Make sure all cable connectors are in good condition (no flared or pushed out terminals). If the connector is good, continue with step 6.

On-Board Diagnostic Connector Identification (Wire Color May Vary By Model):

6. Check the BK/WT wire in the diagnostic connector for continuity to ground.


ACCESSING AND DELETING FAULT MESSAGES

CAUTION: Be sure to apply parking brake and/or block wheels before performing idle check or adjustment, or any engine running tests.

Diagnostic Connector Location:

1. Connect the scan tool to the diagnostic connector located in the engine compartment near the Single Board Engine Controller (SBEC).
2. If possible, START the engine, turn ON the air conditioning, and shift the transmission selector through all of the gears, returning to PARK (A/T) or NEUTRAL (M/T). Turn OFF the air conditioning and shut OFF the engine.
3. Turn ON the ignition switch and observe the Check Engine lamp. It should light for approx. 2 seconds then go out.
4. Using the DRB II or equivalent scan tool, go to the SELECT SYSTEM menu that looks like this:
1) ENGINE
2) TRANSMISSION
3) BODY
4) SUSPENSION
5) ABS
6) PASSIVE REST
7) THEFT ALARM

5. Select the ENGINE option. The following menu will appear:
1) WITH A/C
2) WITHOUT A/C



6. Select the appropriate option. The following menu will appear:
1) FUEL/IGNITION
2) CHARGING
3) SPEED CONTROL


7. Select the FUEL/IGNITION option. The following menu will appear:
1) SYSTEM TESTS
2) READ FAULTS
3) STATE DISPLAY
4) ACTUATOR TEST
5) ADJUSTMENTS

8. To extract fault codes, select the READ FAULTS option and all of the faults that are stored in the computers memory will be displayed. Write all of the fault codes down. Diagnose and repair any problems which are setting fault messages before proceeding with other testing. Diagnostic Trouble Code Descriptions


9. To delete existing fault codes, select the ADJUSTMENTS option. The following menu will appear:
1) ERASE FAULTS
2) RESET MEMORY
3) RESET EMR LIGHT
4) EMR MEMORY CHECK


10. Select ERASE FAULTS option to clear fault codes.