No engine cooling fans at low or high speed
2004 Volkswagen Beetle convertible 5 speed
I have no low speed fans when I turn on the ac and blower. To try and resolve the problem I've replaced the following:
FCM (twice), the thermoswitch on the radiator, along with the fusebox over the battery.As well as the fan unit itself.
I've attempted trouble shooting the problem with the instruction in this thread. I have signal at the FCM (T14/8) when the ac switch and blower are on but the fans do not turn on. All fuses are good including 5,16, and 25 inside the car.
On T4/1 and T4/3 I have 12 volts. I do not have 12 volts on T4/2 which is required for low speed fans. I took the connector off the thermoswitch and jumper pins 1 and 2, the fans turn on. However when I jumper pins 2 and 3 following the instructions in this thread, I do not get high speed. I took off the connectors for the fans and applied 12v directly, both high and low speeds are working.
Not sure how the lack of high speed would prevent the low speed fans from coming on but this is what I see so far. Also in the pinout for the T$ and T14 connectors for the FCM, it indicates there's another signal required for the low speed, T14/3 for a ground from the ECM when the engines under heavy load. If this is constantly ground would that cause my problem?
I could really use some help here.
2004 Volkswagen Beetle convertible 5 speed
I have no low speed fans when I turn on the ac and blower. To try and resolve the problem I've replaced the following:
FCM (twice), the thermoswitch on the radiator, along with the fusebox over the battery.As well as the fan unit itself.
I've attempted trouble shooting the problem with the instruction in this thread. I have signal at the FCM (T14/8) when the ac switch and blower are on but the fans do not turn on. All fuses are good including 5,16, and 25 inside the car.
On T4/1 and T4/3 I have 12 volts. I do not have 12 volts on T4/2 which is required for low speed fans. I took the connector off the thermoswitch and jumper pins 1 and 2, the fans turn on. However when I jumper pins 2 and 3 following the instructions in this thread, I do not get high speed. I took off the connectors for the fans and applied 12v directly, both high and low speeds are working.
Not sure how the lack of high speed would prevent the low speed fans from coming on but this is what I see so far. Also in the pinout for the T$ and T14 connectors for the FCM, it indicates there's another signal required for the low speed, T14/3 for a ground from the ECM when the engines under heavy load. If this is constantly ground would that cause my problem?
I could really use some help here.