PCM/ECM REPROGRAMMING - GAS

Follow the instructions in order.

OBTAINING DIAGNOSTIC TROUBLE CODES

BULB CHECK

Key on: Bulb illuminated until vehicle starts, as long as all once per trip (readiness) monitors completed. If monitors have not been completed, then: Key on: bulb check for about 5 to 8 seconds, lamp then flashes if once per trip (readiness) monitors have not been completed until vehicle is started, then MIL is extinguished.

OBTAINING DTC'S USING SCAN TOOL

1. Connect the scan tool to the data link (diagnostic) connector. This connector is located in the passenger compartment; at the lower edge of instrument panel; near the steering column.

2. Turn the ignition switch on and access the "Read Fault" screen.

3. Record all the DTC's and "freeze frame" information shown on the scan tool.

4. To erase DTC's, use the "Erase Trouble Code" data screen on the scan tool. Do not erase any DTC's until problems have been investigated and repairs have been performed.

PINION FACTOR SETTING

NOTE: This procedure must be performed if the PCM has been replaced with a NEW or replacement unit. Failure to perform this procedure will result in an inoperative or improperly calibrated speedometer.

The vehicle speed readings for the speedometer are taken from the output speed sensor. The PCM must be calibrated to the different combinations of equipment (final drive and tires) available. Pinion Factor allows the technician to set the Powertrain Control Module initial setting so that the speedometer readings will be correct.

To properly read and/or reset the Pinion Factor, it is necessary to use a scan tool.

1. Plug the scan tool into the diagnostic connector located under the instrument panel.

2. Select the Transmission menu.

3. Select the Miscellaneous menu.

4. Select Pinion Factor. Then follow the instructions on the scan tool screen.

QUICK LEARN PROCEDURE

The quick learn procedure requires the use of the scan tool. This program allows the electronic transaxle system to recalibrate itself. This will provide the best possible transaxle operation.

NOTE: The quick learn procedure should be performed if any of the following procedures are performed:

• Transaxle Assembly Replacement
• Powertrain Control Module Replacement
• Solenoid/Pressure Switch Assembly Replacement
• Clutch Plate and/or Seal Replacement
• Valve Body Replacement or Recondition

To perform the Quick Learn Procedure, the following conditions must be met:

• The brakes must be applied
• The engine speed must be above 500 rpm
• The throttle angle (TPS) must be less than 3 degrees
• The shift lever position must stay until prompted to shift to overdrive
• The shift lever position must stay in overdrive after the Shift to Overdrive prompt until the scan tool indicates the procedure is complete
• The calculated oil temperature must be above 15.5º C (60º F) and below 93º C (200º F)

1. Plug the scan tool into the diagnostic connector. The connector is located under the instrument panel.

2. Go to the Transmission screen.

3. Go to the Miscellaneous screen.

4. Select Quick Learn Procedure. Follow the instructions of the scan tool to perform the Quick Learn Procedure.