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Kiatech
Kiatech, Kia Master Technician
Category: Kia
Satisfied Customers: 210
Experience:  30+ years experience,ASE certified,KIA certified Master Technician,Ford factory trained
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My crankshaft sensor goes bad my computer says high voltage,

Customer Question

My crankshaft sensor goes bad my computer says high voltage
JA: Does the vehicle stall at low speeds? Does it sputter?
Customer: It stops running and it will not start
JA: What is the model/year of your Kia?
Customer: Sedona 2005 ex
JA: Are you fixing your Sedona yourself? What have you tried so far?
Customer: Yes change the part 3 time's
JA: Anything else you want the mechanic to know before I connect you?
Customer: How can I lower the the amount of power to the crank shaft sensor
Submitted: 4 months ago.
Category: Kia
Expert:  K. Wiggins replied 4 months ago.

Hello, reference voltage is supplied by the ECM, but the wire can also short to a power wire causing this. What's the code that's coming up so I can provide you the troubleshooting info.

Customer: replied 4 months ago.
Po330
Expert:  david craig replied 4 months ago.

Hi Im David. give me a minute to look up some info. thanks

Expert:  david craig replied 4 months ago.

why are you replacing the crank sensor 3 times with a P0330 code?

Customer: replied 4 months ago.
this is 4 times
Customer: replied 4 months ago.
The car will not start until I place a nother crankshaft position sensor
Expert:  david craig replied 4 months ago.

so, it starts each time you replace it? the code is for the knock sensor

Expert:  david craig replied 4 months ago.

hello??

Customer: replied 4 months ago.
I am sorry but we're moving and I am disabled so I do little at a. Time my code is not po330 but po338
Expert:  david craig replied 4 months ago.

ok. give me a moment thanks.

Expert:  david craig replied 4 months ago.

ok, since a new sensor didnt fix the issue, its going to be a wiring issue. do you have a multi meter and are you able to get to the connector to the crank position sensor?

Customer: replied 4 months ago.
Expert:  david craig replied 4 months ago.

ok. we can check for the correct power and signal reference and ground. give me a moment to get a diagram

Expert:  david craig replied 4 months ago.

heres a wiring print of the system for starters. i will get the information on the pin out readings

Expert:  david craig replied 4 months ago.

check for a ground on pin 2 of the wiring connector. check for reference voltage on pin 3

Customer: replied 4 months ago.
Ok I will do it later I waiting for aaa to tow my car
Customer: replied 4 months ago.
What is the voltage I should have
Expert:  david craig replied 4 months ago.

the reference voltage should be 5vdc

Expert:  david craig replied 4 months ago.

if all of that tests ok. you will need to disconnect the ecm connector and we will need to check for continuity and high resistance shorts to ground on all 3 wires

Customer: replied 4 months ago.
1 close to fender and second ground I get6.36 #3close to engine I get 5.1
Expert:  david craig replied 4 months ago.

i dont understand what you are saying

Customer: replied 4 months ago.
2to3 I have 5.1 and 1to 2i have 6.3
Expert:  david craig replied 4 months ago.

you are looking for voltage between the pins. you are looking for voltage at 1 and 3. dont use 2 as the ground use the negative battery post. are you back probing the connector with it connected? then check 2 for a good ground using the negative battery cable.

Customer: replied 4 months ago.
I get 11.32 between 1 and 3
Expert:  david craig replied 4 months ago.

good now do this test

Expert:  david craig replied 4 months ago.
  1. One wire is the Power Source and it normally provides 12 Volts although some provide 9 Volts.
    1. You'll test for this Voltage with your Multimeter in DC Volts mode.
  2. One wire is the Ground Path for the above 9 or 12 volts. This Ground is generally provided inside the Fuel Injection Computer or the Ignition Control Module, but not always.
    1. You'll test for this Ground with your Multimeter in DC Volts mode.
  3. The third wire is the Triggering Signal wire. It's thru' this wire that the Crank (or Cam Sensor) sends the Signal it produces to the Fuel Injection Computer or Ignition Control Module.
    1. It's on this wire that you'll connect/attach the Red Lead of your Multimeter to test for the Signal.
    2. The Black Lead you'll connect to ground.
    3. The Multimeter will have to be either in Volts DC mode or Frequency (Hz) mode to verify the Signal.
    4. The rule of thumb, if you're using Volts DC mode, is that this Signal should output the amount of Voltage that come's into the Sensor on the Power Circuit. So, when you crank the engine, you should see anywhere between 9 to 12 Volts.
    5. If the CKP or CMP Sensor is BAD, you'll get no reading.
Customer: replied 4 months ago.
Okay I got to wait till it stops raining just starting to rain
Expert:  david craig replied 4 months ago.

ok.

Expert:  david craig replied 4 months ago.

any luck?

Customer: replied 4 months ago.
I will check it later the rain got my arthritis real bad I'm in bed
Expert:  david craig replied 4 months ago.

im sorry. ok. get better.

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