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Speedometer, odometer and cruise control not working?

Tiny
DALE MCCUMONS
  • MEMBER
  • 2005 CADILLAC CTS
  • 3.6L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 150,000 MILES
No check engine light. Car listed above, VIN 7. Replacing speed sensor under transmission pan. How can I test the sensor to verify it's not working and is it replaced and it's ready to go? I would appreciate your help I can't afford to take it to the shop, have to fix myself and can use all the help I can get. Thank you
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Saturday, October 15th, 2022 AT 9:28 AM

5 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Hi,

The sensor is tested by having a scan tool that can read live data. With this tool, you would be looking for a signal from the vehicle speed sensor.

What I would recommend is to scan the can-bus to see if there are codes stored. CAN stands for controller area network. Basically, the different computers/modules are tied together via a few wires. This type of scan will retrieve codes regardless of the module storing them.

Here is a link showing how it is done:

https://www.2carpros.com/articles/can-scan-controller-area-network-easy

As far as just replacing the sensor, I can't say that will resolve the issues. Are there any other lights on such as the ABS or traction control?

Let me know.

Joe
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Saturday, October 15th, 2022 AT 10:05 PM
Tiny
DALE MCCUMONS
  • MEMBER
  • 11 POSTS
Check engine light is not on. Service engine and service stability come on display above radio just push button and it goes away. Engine works okay, transmission works ok. Took it to AutoZone they plugged in scanner. Diagnostic trouble codes were power train system -secondary DTCs-po573-00-brake switch circuit 1 high voltage. Anti-lock brake system- b3903, c0460-steering position sensor malfunction, c0461-steering position sensor range and u100-class 2 data link malfunction. The odometer has 150000 + miles on it the scanner reads 1385 miles. Can you help? I can't afford to take it to the shop and spend hours looking for the problem unless that's my last resort. I would appreciate any help you can give me, thanks.
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Friday, October 21st, 2022 AT 9:55 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Hi,

I looked through all the codes you provided, and they are all interrelated. At this point, I feel you should start with checking the steering angle sensor to start.

If you look below, I attached the directions specific to the C0460. You will see how thing things tie together.

Let me know if you are comfortable performing the diagnostics.

Take care,

Joe

See pics below.
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Friday, October 21st, 2022 AT 9:35 PM
Tiny
DALE MCCUMONS
  • MEMBER
  • 11 POSTS
Hi Joe, thanks for your help. The pics you sent the typing is very small and some are out of focus. I tried adjusting them but my printer is old. Do you have a link to some that are in better shape. I can't read all of these I would appreciate it. Thanks
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Saturday, October 22nd, 2022 AT 8:44 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Hi,

I suspect it's the diagnostic charts. I recopied them below and did half a page at a time, so it is a lot bigger. Let me know if that helps. Also, if you need other pages enlarged, let me know.

Take care,

Joe

See pics below.
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Saturday, October 22nd, 2022 AT 9:43 PM

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