Engine Control Module Replacement
Service of the engine control module (ECM) should consist of
either replacement of the ECM of programming of the electrically
erasable programmable read only memory (EEPROM). If the diagnostic
procedures call for the ECM to be replaced, the replacement ECM
should be checked to ensure that the correct part is being used. If
the correct part is being used, remove the faulty ECM and install
the new service ECM.
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Caution:
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Turn the ignition OFF when installing or
removing the control module connectors and disconnecting or
reconnecting the power to the control module (battery cable,
powertrain control module (PCM)/engine control module
(ECM)/transaxle control module (TCM) pigtail, control module fuse,
jumper cables, etc.) in order to prevent internal control module
damage. |
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Control module damage may result when the
metal case contacts battery voltage. DO NOT contact the control
module metal case with battery voltage when servicing a control
module, using battery booster cables, or when charging the vehicle
battery. |
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In order to prevent any possible
electrostatic discharge damage to the control module, do no touch
the connector pins or the soldered components on the circuit
board. |
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Remove any debris from around the control
module connector surfaces before servicing the control module.
Inspect the control module connector gaskets when diagnosing or
replacing the control module. Ensure that the gaskets are installed
correctly. The gaskets prevent contaminant intrusion into the
control module. |
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The replacement control module must be
programmed. |
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Note: It is necessary to
record the remaining engine oil life. If the replacement module is
not programed with the remaining engine oil life, the engine oil
life will default to 100 percent. If the replacement module is not
programmed with the remaining engine oil life, the engine oil will
need to be changed at 5000 km (3.000 mi) from the last engine oil
change.
Note: It is necessary to
record the remaining automatic transmission fluid life. If the
replacement module is not programed with the remaining automatic
transmission fluid life, the automatic transmission fluid life will
default to 100 percent. If the replacement module is not programmed
with the remaining automatic transmission fluid life, the automatic
transmission fluid will need to be changed at 83000 km (50.000 mi)
from the last automatic transmission fluid change.
Removal Procedure
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Caution: In
order to prevent any possible electrostatic discharge damage to the
ECM, do not touch the connector pins. |
| 4. |
Unclip the 2 wiring harness
clips (2) from the bracket. |
| 5. |
Unlock the 2 wiring harness
plugs (1) from the engine control module and hang it aside.
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| 6. |
Remove the engine control
module (1). |
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Unlock the holding clip (2)
with a screwdriver. |
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Remove the engine control
module (1) out of the bracket. |
| 7. |
Remove the engine control
module insulator (1) from the engine control module bracket (2) in
arrow direction. |
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Unclip the retainer with a screwdriver. |
| 8. |
Remove the engine control
module (1) from the engine control module bracket in arrow
direction. |
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Unclip the retainer (2) with a screwdriver. |
Installation Procedure
| 1. |
Install the engine control
module bracket to the engine control module (1) in arrow direction
until the 2 retainers (2) audible engage. |
| 2. |
Install the engine control
module bracket (2) to the engine control module insulator (1) in
arrow direction until the retainer audible engage. |
| 3. |
Install the engine control
module (1). |
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Slide the engine control module into the bracket (2) until its
audible engage. |
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Caution: In
order to prevent any possible electrostatic discharge damage to the
ECM, do not touch the connector pins. |
| 4. |
Connect the 2 wiring harness
plugs (1) to the engine control module and lock them. |
| 5. |
Install the 2 wiring harness
clips (2) to the bracket. |
| 8. |
Turn OFF the ignition for at
least 5 seconds after the programming event is complete.
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