Service Procedure

NOTE:
This procedure is described using CONSULT-II. CONSULT may also be used to perform the diagnostic procedures outlined below. However, the screens and steps will differ slightly from those shown here.

Figure 1:

1. Install the NATS card (purple) into slot 1 of CONSULT-II (see Figure 1).

Figure 2:

2. Connect CONSULT-II to the vehicle (see Figure 2).

Figure 3:

3. Turn the ignition switch to "ON" (do not start the engine). CONSULT-II will then turn on automatically (see Figure 3). Now touch "START".

Figure 4:

4. Select "NATS V2.O" (see Figure 4).

Figure 5:

5. Select "SELF DIAGNOSIS" (see Figure 5).

Figure 6:

6. Confirm Self Diagnosis Result "ID DISCORD, IMM-ECM" displayed on the CONSULT-II screen (see Figure 6).

7. Press "COPY" to print the Self-Diagnosis screen (see Figure 6). Attach this printout to the repair order. Then press "BACK" (see Figure 6) to return to the CONSULT-II main menu.

Figure 7:

8. Turn the vehicle's ignition switch "OFF" and CONSULT-Il "OFF" (see Figure 7).

Figure 8:

9. Remove the NATS (purple) card from CONSULT-II and install the Diagnostics (blue) card (see Figure 8).

Figure 9:

10. Turn the ignition switch to "ON" (do not start the engine). CONSULT-II will then turn on automatically (see Figure 9). Now touch "START".

Figure 10:

11. Select "ENGINE" (see Figure 10).

Figure 11:

12. Select "ECM PART NUMBER" (see Figure 11).

Figure 12:

13. Press "COPY" to print the ECM PART NUMBER screen (see Figure 12). Attach this printout to the repair order. Then press "BACK" to return to the CONSULT-II main menu.

14. Turn the vehicle's ignition switch "OFF" and CONSULT-II "OFF".





15. Compare the vehicle's ECM PART NUMBER as printed from CONSULT-II in step 13 to the ECM # in the chart.

- If the vehicle's ECM # is in the ORIGINAL ECM # column, replace the ECM with the applicable UPDATED PART # from the Parts Information section of this bulletin, then proceed to step 16.

- If the vehicle's ECM # is in the UPDATED ECM # column, replace the NATS Immobilizer Control Unit (IMMU) with the one from the Parts Information section of this bulletin then proceed to step 16.








16. Perform NATS C/U Initialization and Key Registration. Click here or refer to Attachment I to this bulletin for instructions on that procedure.

NOTE:
Match the Original Part # as printed from CONSULT-II in step 13 from the vehicle's ECM to select the replacement, Updated Part #.