Tracker 2WD L4-2.0L VIN C (1999)
Powertrain Control Module: Service and Repair
Powertrain Control Module (PCM) Replacement
PCM Replacement
REMOVAL PROCEDURE
NOTE:
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Check the resistance values of all PCM relays, solenoids, and other output controls before replacing or substituting the Powertrain Control Module
(PCM). Check all the sensor wiring and the PCM output control circuits for a short to ground before replacing or substituting the PCM. Perform
all circuit repairs or malfunctioning component part replacements before installing a replacement or substitute PCM. This will prevent damage to
the replacement or substitute PCM.
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In order to prevent possible Electrostatic Discharge damage to the PCM, Do Not touch the connector pins or the soldered components on the
circuit board.
IMPORTANT:
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Service of the powertrain control module (PCM) consists of the replacement of the PCM. The PCM has no serviceable parts. The PCM has an
erasable programmable read only memory (EPROM) chip that is programmed at the factory. The PCM CANNOT BE REPROGRAMMED in the
field. Replace the PCM as a complete assembly if the PCM is determined to be faulty.
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When replacing the production powertrain control module (PCM) with a service PCM, transfer the broadcast code and production PCM number to
the service PCM label. This will allow for positive identification of the PCM throughout the service life of the vehicle.
CAUTION: Refer to Battery Disconnect Caution in Cautions and Notices.
Powertrain Control Module (PCM) Description
1. Disconnect the negative battery cable.
2. Disable the SIR system.
3. Release the two plastic retainers and remove the PCM cover (1).
