The following eight diagrams show the TIPM-7 series fuel pump circuit with and without our TIPM test/bypass cables in place. Note that a newer bypass mode connection from M37 rather than M7 has been in use since 2019. The circuits include:
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Fuel pump relay working properly - vehicle off
Fuel pump relay working properly - vehicle on
Fuel pump relay failing - vehicle attempting to start
Fuel pump relay stuck in on position - vehicle off
With TIPM cable - Fuel pump relay test with vehicle working properly
With TIPM cable - Fuel pump relay test with vehicle not starting
With TIPM cable - Fuel pump test with vehicle off
With TIPM cable - Bypass mode with old faulty relay disconnected
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