Manual fan switch trouble
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Mmm. Sounds like you might be trying to cure a symptom rather than the cause?
The cooling fan module is controlled by a PWM signal from the ECM, not a simple 12v On/Off. (Fans are variable speed)
The alternative of splicing in directly into the main fan wiring would require a relay to handle the currents involved, plus some substantial diodes probably to prevent putting unwanted voltage back to the fan module.
The cooling fan module is controlled by a PWM signal from the ECM, not a simple 12v On/Off. (Fans are variable speed)
The alternative of splicing in directly into the main fan wiring would require a relay to handle the currents involved, plus some substantial diodes probably to prevent putting unwanted voltage back to the fan module.
Last edited by astromorg; 08-26-2018 at 09:45 AM.
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