Powertrain Control Module (PCM) - Programming

PCM PROGRAMMING PROCEDURES
Follow one of the procedures that describe the type of repair you performed:

Replaced The PCM (NEW)
^ Program the PCM (Flash).
^ Operate the engine until the engine control temperature (ECT) is more than 77°C (170°F) - auto top dead center (TDC) offset.

Reprogram (reflash) The PCM
Operate the engine until the ECT is more than 77°C (170°F) (auto TDC offset).

Disconnect PCM/Reuse
The memory is OK.

PROGRAM THE PCM
1. Perform the set up. Make sure that the following conditions are met:
^ The battery is charged.
^ The ignition is ON.
^ The battery/cig. lighter connection is secure.
^ The data link connector (DLC) is attached.
2. Perform the programming procedure. Refer to up-to-date Techline terminal/equipment for user instructions.
3. Perform the Password Learn Procedure Seed and Key. Refer to Programming Theft Deterrent System Components in Theft Deterrent.
4. After the vehicle has been programmed, operate the vehicle until the coolant temperature is more than 77°C (170°F). This will allow the TDC offset to be programmed. Refer to PCM Programming, or the TDC offset, if necessary.
5. If the PCM is only being reprogrammed, the PCM maybe necessary to perform a Glow Plug System Relearn. Refer to Glow Plug System Relearn Procedure.
6. If the PCM fails to reprogram, do the following:
^ Check all of the PCM connections.
^ Check the Techline terminal/equipment for the latest software version.
^ Try again to reprogram the PCM. If the reprogramming fails again, replace the PCM.

PCM PROGRAMMING (TDC OFFSET)
The PCM will automatically activate the TDC offset program when the engine coolant is more than 77°C (170°F). If the PCM is not programmed with a TDC offset, a DTC P1214 will set.

GLOW PLUG SYSTEM RELEARN PROCEDURE

IMPORTANT: The vehicle must be in operating condition before performing this procedure. The glow plug system type learn is used to identify the correct system type (Federal or California). The scan tool will display Federal, California or Not Learned (Engine Data List). For visual verification refer to Computers and Controls Systems Component Views. The glow plug system type needs to be relearned when a new calibration has been flash programmed in to the PCM. The relearn procedure does not need to be done to a glow plug system type after a PCM has been replaced. The new PCM has the ability to perform an auto learn when system is not present. The Not Learned message will display on scan tool. If a system type has not been relearned after the PCM has been flashed, a DTC P0380 will set.

1. Turn ON the ignition, with the engine OFF.
2. Use the scan tool in order to select Special Functions, Engine Output Functions and Glow Plug System Learn.
3. Activate the Glow Plug System Learn by selecting ON. After the learn function has been preformed Not Learned will display on the scan tool. In this step the scan tool is clearing the system type.
4. Use the scan tool in order to select the Special Functions menu, and select Glow Plug.
5. Activate the Glow Plug system by selecting ON. In this step the glow plug relay is now sending the identifying (signature) voltage to the PCM.
6. The PCM will now be able to identify the correct glow plug system type. For visual verification of the glow plug system, refer to Computers and Controls Systems Component Views.
7. Clear the DTC P0380.
8. Allow the PCM to power down for at least 45 seconds.
9. Turn ON the ignition leaving the engine OFF. Use the scan tool in order to verify that DTC P0380 has not reset.
10. If DTC P0380 reset, perform the following procedure:
^ Check the connections at the glow plug relay.
^ Try again to relearn the glow plug system. If the relearn fails again, refer to DTC P0380 (California) or DTC P0380 (Federal).