Before changing a control module
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Before changing a control module
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It is our experience that the majority of control modules returned to us for repair or replacement under warranty are in perfect working order. In these cases, fitting a new control module has obviously not cured the fault. Therefore, go through all the following points carefully before changing the control module:
1.
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Check the latest edition of TIS2000 to see whether the problem can be solved with a control module software update (for control modules that can be reprogrammed).
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2.
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Check all grounding points and the power supply to the control module.
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3.
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Check with a diagnostic tool that all the readings are plausible (several readings can affect one function).
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4.
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Check with the diagnostics tool that all activations function normally. (Malfunction in one output circuit can affect another output circuit).
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5.
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If the malfunction remains, the control module must be replaced.
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6.
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Control modules are sensitive to electrostatic discharges. Great care must be taken to follow the following procedure to avoid damaging internal components in the control module:
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Keep the control module in its packaging for as long as possible.
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Never touch the pins of a control module with your hands or clothing.
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Ground yourself by touching part of the car's body/engine. Unplug the connector from the car's control module.
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Place the exchanged control module in its return packaging without touching the pins.
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Ground yourself by touching part of the car's body/engine. Plug in the connector to the car's control module.
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