Our 03 Caravan has no power to the front blower fan switch control
fuses are all good any ideas

 

Manual or automatic temperature control and which pins are you testing?

 

It has manual temp controls
When the van was bought it only had power to the high setting on front blower control ****

 

The blower speed switch is only applying a ground to the resistor network in the blower motor resistor block. That network is what controls the speed of the blower. Power comes off the front blower relay output contacts through 40 amp fuse 10, makes a loop through the resistor block then back out and on to the motor. The motor sits there waiting for the ground applied from the switch. Once grounded, the voltage passes through the resistor network and through the motor.

Might try back probing pin 2 (dark green wire) and jumping it to ground. The blower should spin on high speed immediately with any speed selected. That will proof power from the relay in the IPM, the fuse and some wiring. You could then disconnect the blower motor connector and from 2 again measure resistance through each of the resistors while rotating the speed switch.

Did someone replace the resistor block the first time around when you only had high speed? That's the usual culprit with that symptom. High speed bypasses the any resistors in the resistor block.

Is the rear blower working? If not that points to an FCM problem.

Need a wire diagram? Send an email address to send it to via a private message.

 

Uh boy! Looks like you fell through the cracks. I appologise. Just sent the diagram.

 

Replaced front blower motor resistor - blower works like it should

 

Hello.
My right brake light is not working; left side okay.
Tried new bulb - okay. Fuse is okay.
I don't have the electrical schematic to track down where wiring splits into right and left sides.
I haven't yet checked the voltage where the bulb holder mounts to the rear lights assembly. If that is okay, I need to figure out how to check for a short circuit.
Has anyone solved this problem?

 

This subject isn't related to the original post - front blower. You would be better off posting this as a new thread. How? On opening page click "New Thread" at upper left just above "Threads in Forum"

In the mean time swap light assemblies left to right.