Service Procedure

Step A: Confirm This Bulletin Applies.





1. With CONSULT-II "ON", print the Transmission Control Module Part Number as shown.





^ Figure 1 is an example of the Part Number (P/N) printout. This is the Transmission Control Module (TCM) Part Number (P/N).

2. Attach this printout to the Repair Order. You'll use the TCM P/N to see if this bulletin applies.

3. Check the TCM P/N on the printout from step 1 (Figure 1):





^ Compare your vehicle's TCM P/N to those shown under Current TCM P/N in Chart A shown.

IMPORTANT:
To get the correct reprogramming data for this incident, you must:

> If your vehicle's TCM P/N matches a Current TCM P/N in the chart above:

^ This bulletin applies.

^ TCM reprogramming will be needed.

^ ECM reprogramming may be needed.

^ Go to step B; check to see if ECM reprogramming is needed.

> If your vehicle's TCM P/N does not match a P/N in the chart above:

^ This bulletin does not apply. Go back to ASIST for further diagnostic and repair information.

Step B: Check to see if ECM Reprogramming is Needed





1. With CONSULT-II "ON", print the Engine Control Module Part Number as shown.





^ Figure 1 is an example of the Part Number printout.

^ This is the Engine Control Module (ECM) Part Number (P/N).

2. Attach this printout to the Repair Order.





3. Compare your vehicle's ECM P/N to those shown under Current ECM P/N in Chart B shown.

A. If your vehicle's ECM P/N matches a Current ECM P/N in the chart above:

^ ECM reprogramming will be needed.

B. If your vehicles ECM P/N does not match a P/N in the chart above:

^ ECM reprogramming will not be needed.

4. Go to Step C: Perform reprogramming by special ID lookup

Step C: Perform Reprogramming by Special ID Lookup

1. Perform reprogramming using the special "ASIST ECU DATA ID CODE" from Chart A.

IMPORTANT:
a. You must use the ID Code to get the reprogramming data for this incident.

b. This incident will require TCM reprogramming.

c. This incident may require ECM reprogramming (see Step B).

ECM & TCM REPROGRAMMING PROCEDURES

Vehicle Reprogramming Overview for This Incident.

^ There are six basic steps.

Step 1: Download reprogramming data (transfer it) from ASIST into CONSULT-II.
Step 2: Preparation for reprogramming.
Step 3: Reprogram the ECM (if needed, see Step B).
Step 4: ECM reprogramming "Wrap-up" (only if ECM reprogramming is done).
Step 5: Reprogram the TCM.
Step 6: TCM reprogramming "Wrap-up".

> If you are familiar with special TCM and ECM reprogramming using I.D. Code entry:

^ Review Steps one through six.

^ Use them as a "Quick Reference" for ECM and TCM reprogramming.

Step One: Download (Transfer) Data From ASIST Into CONSULT-II





1. Click on the Keypad button (see Figure A).

^ A Keypad will pop up, left side of screen.

2. Using the digit keys on the keypad, enter the correct ASIST ECU DATA ID CODE.

^ Go back to Chart A shown in this bulletin.

3. Then click the "Continue" button on the keypad.

^ One ECM and one TCM data file will appear in the center of the ASIST screen.

4. Now you'll add reprogramming data to the "File(s) selected" list. This list is on the right side of the ASIST screen (Figure A, above).

A. Click on the "To" number for the TCM data (it's in the center of the ASIST screen).

B. Then click on the "Add" button.

^ If ECM reprogramming is needed (see Step B).

C. Click on the "To" number for the ECM data (it's in the center of the ASIST screen).

D. Then click on the "Add" button again.

5. Write the "To" number(s) on the Repair Order. You will need this later in the reprogramming process.

6. Click the "CONTINUE" button to start the CONSULT-II setup.

Step Two: Preparation for Reprogramming

1. Connect a battery charger to the vehicle's battery. Set the charger to a low charge rate (trickle charge).





CAUTION:
For number 2 below, and number 3, DO NOT connect the CONSULT-II AC power supply.





2. Press [SUB MODE] (see Figure C) then:

a. From the listed items, find and select [BATTERY CHARGE].





3. Check the CONSULT-II's "Charger Input" reading (see Figure D).

NOTE:
^ "Battery Voltage" is the voltage level of CONSULT-II's battery.

^ "Charger Input" is the voltage level of the vehicle's battery. (It must be above 12 volts.)

Step Three: Reprogram the ECM (if needed)

^ You should have determined if ECM reprogramming is needed when you performed Step B.

^ If ECM reprogramming is not needed, go to Step Five.

Step Four: ECM Reprogramming "Wrap-up" (only if ECM reprogramming is done)

1. Turn the ignition switch "OFF" and CONSULT-II "OFF".

2. Wait more than 10 seconds, then;

a. Turn the ignition switch "ON" for 2 second, then

b. Turn the ignition switch "OFF" again for 10 seconds (see Figure D). This will reset ECM "self learned" Data.





3. Start the engine and check the idle speed.

^ If idle speed is too low, perform "Idle Air Volume Learning" (IAVL). See the appropriate Service Manual (ESM) for this procedure.

NOTE:
If the engine will not idle, hold the engine RPM at about 2000, then slowly bring it down to an idle. IAVL can now be performed.

4. Confirm the engine is operating normally.

5. Make sure the MIL is OFF.

^ If it's still ON, use CONSULT-II with the Diagnostic (red/white) Card to erase any DTC's that may have stored during the reprogramming procedure.

Step Five: Reprogram the TCM

^ You're ready to do TCM reprogramming when you completed steps One and Two.

Step Six: TCM Reprogramming "Wrap-up"

1. Turn the ignition and CONSULT-II OFF.

2. Disconnect CONSULT-II from the vehicle.

3. Start the Engine and make sure the MIL is OFF.

^ If it's still ON, use CONSULT-II with the Diagnostic (red/white) Card to erase any DTC's that may have stored during the reprogramming procedure.

4. Test-drive the vehicle and make sure the transmission operates correctly in all modes.

^ See the AT section of the appropriate Service Manual for shift schedule specifications.