Workshop Manual

6E–547
6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS
EEPROM
General Description
The Electronically Erasable Programmable Read Only
Memory (EEPROM) is a permanent memory that is
physically soldered within the PCM. The EEPROM
contains program and calibration information that the
PCM needs to control powertrain operation.
EEPROM Programming
1.Set-up – Ensure that the following conditions have
been met:
B The battery is fully charged.
B The ignition is “ON.”
B The Vehicle Interface Module cable connection at
the DLC is secure.
2.Program the PCM using the latest software matching
the vehicle. Refer to up-to-date Techline equipment
user’s instructions.
3.If the PCM fails to program, proceed as follows:
B Ensure that all PCM connections are OK.
B Check the Techline equipment for the latest
software version.
B Attempt to program the PCM. If the PCM still
cannot be programmed properly, replace the PCM.
The replacement PCM must be programmed.
Functional Check
1.Perform the On-Board Diagnostic System Check.
2.Start the engine and run for one minute.
3.Scan for DTCs using the Tech 2.
Throttle Position (TP) Sensor
Removal Procedure
1.Disconnect the negative battery cable.
2.Disconnect the TPS electrical connector.
3.Remove the bolts and the TP sensor from the throttle
body.
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NOTE: Do not clean the TP sensor by soaking it in
solvent. The sensor will be damaged as a result.
Function Check
Use a Tech 2 to check the TP sensor output voltage at
closed throttle.
B The voltage should be TP1 about 0.4V, TP2 about
4.6V and TP3 about 4.6V.
B If the reading is abnormal value, check the throttle
shaft to see if it is binding.
Installation Procedure
1.Install the TP sensor on the throttle body with the
bolts.
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2.Connect the TP electrical connector.
3.Install the negative battery cable.