Generic Scan Tool

NOTE: A string of characters must be entered into the generic scan tool to perform Key On Engine Running (KOER) self test. Refer to scan tool manufacturer instructions for additional information.

- Connect scan tool to Data Link Connector (DLC).

- Turn ignition key to the "ON" position and start vehicle.

- Verify tool is connected and communicating properly by entering the On-Board Diagnostics II (OBD II) System Readiness Test. On-Board System Readiness Test

- Enter the following string to initiate Key On Engine Running (KOER) Self Test:

- Enter the following strings separately and in the order shown.

- All string ID numbers (first field) must match the order shown.

- After the test begins, cycle BOO, 4X4L and TCS switches (if equipped).

08,31,21,C4 10 33 82,,9E 00 44 54 43 28 73 29 20 80 42 20 80 62 20 80 82 A8 51 FF,33

07,32,22 FF,C4 10 22 02 02,,9E 00 43 4E 54 20 80 61 A9 61 00 08,F2

06,32,21,C4 10 32 82 00,,9E 00 57 41 49 54 20 80 81 A1 81 61 07,67

05,32,21,C4 10 31 82,,9E 00 53 54 41 52 54 20 80 81 A1 81 00 06,5D

NOTE: If engine stalls during KOER Self-Test, discontinue test and GO to Diagnostic Subroutine 6.0 DSR6 - Were Any Continuous Memory DTCs Received In DSR2

If unable to activate KOER Self-Test or Tool Communication Error received, GO to Pinpoint Test Step QA1. QA1 - Verify Self-Test Activation Method Used

- After the completion of KOER Self-Test, retrieve and record any KOER DTCs.

- If DTC P1000 is present, ignore it at this time.

- Are any KOER DTCs (except P1000) present?

YES -- Key Off. GO to Powertrain DTC Charts for Pinpoint Test direction (begin diagnosis with first DTC output). [1][2]Diagnostic Trouble Code (DTC) Charts

NO -- GO to Diagnostic Subroutine 6.0 DSR6 - Were Any Continuous Memory DTCs Received In DSR2