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• Check for a security device that must be released before the connector can be
separated, for example barb, hook and eye.
When Inspecting a Connector:
• Check that the individual pins have not been bent
• Check for dampness/dirt/corrosion
• Check cables for security
• Check cable pin joints for damage.
When Connecting a Connector:
• Make sure there is no dirt around the connector/seal
• Make sure there is no dirt or dampness in or around the cavities of the ECU
sockets.
• Push together squarely to ensure terminals are not bent or incorrectly located
• Push the two halves together positively.
Disconnection of the Engine ECM Connectors
When disconnecting a connector, never pull directly on the wires as this may result in
cable and connector damage.
Never disconnect an ECM when the ignition switch is in the ON position as this may
cause multiple fault codes to be logged in the ECM memory.
Always disconnect an ECM after disconnecting the battery negative (black) lead first.
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