E 150 1/2 Ton Van V6-4.2L VIN 2 (1997)
Engine Control Module: Service Precautions
Electronic Component Handling
STATIC DISCHARGE
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Discharge any static electrical charges before handling electronic parts by touching ground or maintaining a ground connection to a bare skin area
like the wrist.
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Never touch the PCM connector pins, integrated circuit connector pins, or soldered components on the PCM circuit board.
TESTING
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When measuring voltage at the control unit harness connector, disconnect harness connector with the ignition OFF, then turn ignition "ON" as
necessary.
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To prevent deforming control unit harness connectors, do not probe terminals directly. Instead, insert a pin from the harness side and perform
measurements through pin.
CONTROL UNIT DAMAGE
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Do not try to disassemble the control unit.
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Before performing electrical welding (for instance, spot welding), disconnect the battery, climate control, injection, cruise control, PCM and radio.
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If temperatures may exceed 176°F (80°C), (example: infra-red spray booth), remove all ECUs.
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Avoid getting water on any of the Fuel and Engine Control System Components.
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Never apply battery power to a component unless directed to do so in a test procedure.
