Dodge Repair Questions? Ask a Mechanic for Answers ASAP
I have seen this many times. The speed sensor on the right front hub has gone out.
It will need to be replaced for the cruise control to work again.
Before you just change the speed sensor, I would check the hub for any play in it or and signs of the bearing going out.
If you see any of this, replace the hub. A new hub comes with a new speed sensor.
Could I get your VIN?
Even using the VIN.
The right front wheel hub should have a speed sensor located in it.
The only thing that this sensor is for is to operate and control the speed control
It would be on the other side, you would need to remove the rotor to see where the sensor is suppose to be.
That model truck came with a speed sensor going to the left front hub.
Sorry, I know I was right. It is on the drivers front hub. There also should be a two pin connector connected to the inner fender just behind the upper control arm.
OK, that makes no sense...
Has the PCM been checked for codes?
Do you have a test light?
OK, check the voltage at the cruise servo connector with the key on engine off.
DB/RD wire pin 3 of the connector for 12 volts
With the ignition off, disconnect the cruise servo, disconnect brake lamp switch connector.
In OHMS check the DB/RD wire in cruise servo to the brake switch
Diag says, resistance below 5.0 ohms?No- Repair the open in the circuit.
Yes, replace brake switch
What is the ohm reaing on the piece of jumper wire that you used?
OK, just let me know.
Is P1683 still the only code?
OK, I am going to need to figure out how you can do the rest of the testing.
You need to have the DRBIII scan tool to actuate and test the rest of the circuits.
The other power wire is coming from the cruise switch itself.
Try this, Disconnect the cruise servo, clear the codes, and see what the cruise light does.
Disconnect both battery terminal, touch them together and hold for 30 seconds.
Yes plug the brake switch in
Also check G103 in this picture.
OK,Has a battery leaked or had alot of corrosion on the terminals?
Do you have access to a testing vacuum pump?
Or to a scan tool that you can perform actuation test with?
No, that kind would do more damage than testing.
We have a few options let.
We can ohm test ever wire related to the cruise servo and switch.
Or you can replace the servo.
Or we can resume this after you find a scan tool and a test vacuum pump
Diagrams,Let me know which wire you are testing at which time and I will tell you point to point and an ohm reading for you.
They are really both the same diagrams, just each shows points better than the other
Do you know anyone else with a truck like yours that you could borrow the servo for a minute?
I believe it is the servo that is bad. That is why I am asking, but don't want you to buy 1 if it is not needed.
I think it is the same servo.
You would just need to make sure the connectors are the same and wired the same.
I would need to know exactly what year the durango is to check.
Yes Ohm test wires with components disconnect first.
All values should be less that 5.0 ohms.
No resistors in any circuit.
If you do any testing though, if there is a pass thru connector like C130, C119, disconnect the connector and test each side of the circuit. That would narrow down the wire if you do find a problem in 1 circuit. Like the V23 circuit from the PCM to the brake lamp switch. test from PCM connector to C130. Then from the other side of C130 to C219, then the other side of C219 to the brake lamp switch.
No you would need truck running after you press the cruise switch.
You know when the cruise light is illuminated is when you'll have voltage on that wire
That was the wire that Chrysler diag tree said to check. To finish the diag per Chrysler, you need a scan tool and a way to verify that the servo diaphragm will hold vacuum.
Yes, there is a bad component.
If all the wiring tested good, which you said it does, it is a bad component.
I am suspecting the servo because it when you press the switch the first time you say it turns the light on.
Which also means that the PCM is seeing the request and should be sending the power out.
You test the Blue side to verify the PCM is powering the circuit and that the brake lamp switch is good.