Fluke 87v cal err

Radio Displays CAL or CAL ERR

Step
Action
Yes
No
Schematic Reference: Radio/Audio System Schematics
1
Did you perform the Diagnostic System Check-Entertainment System?
YES Go to Step 2
NO Go to Diagnostic System Check - Entertainment System
2
Turn ON the ignition, with the engine OFF.
Turn ON the radio.
Does the radio operate normally?
Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems
Go to Step 3
3
Program the radio. Refer to Service Programming System (SPS) .
Turn OFF the ignition.
Turn ON the ignition, with the engine OFF.
Turn ON the radio.
Does the radio display CAL ERR?
Go to Step 4
Go to Step 5
4
Important: Reprogram the radio. Refer to Service Programming System (SPS) in Programming.
Replace the radio. Refer to Radio Replacement .
Did you complete the replacement?
Go to Step 5
--
5
Operate the system in order to verify the repair.
Did you correct the condition?
System OK
Go to Step 2

Question edited for clarity.
Question moved to model category.

It appears to be a software error that only the dealership or an auto electrician can fix!

https://www.google.com/search?q=2002+trailblazer+radio+cal+error

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Unfortunately the CAL ERR is inside the radio and it requires a scan tool to reprogram. There are shops that are not a dealer that can do this programming. There is no code or sequence that I can give you to unlock or fix this. If there was, rest assured I would, but there is not. check with local stereo shops

I’m happy to help further over the phone at https://www.6ya.com/expert/dennis_7c5f8bf265aab5e9

Change the tank gas cap. When it is clogged, vacuumbuilds in the tank; this prevents the gas flow to the engine.

refer page 14 of the user manual. Unfortunately you cannot do much as the memory chip containing the program is developing a fault.

You could try to find if it is in a socket on the circuit board and take it out and lean the pins with isopropyl alcohol.
Otherwise a service call is in order.

http://www.trs-rentelco.com/Manual/FLU_87_Manual.pdf

You can find the details of the components in the service manual.
http://assets.fluke.com/manuals/83_85_87smeng0500.pdf

Try to replace the battery and see if it makes a difference. Maybe the currents are not sufficient to run the chip.

One possible reason: there was steam or water inside the meter through probe. The easy way to fix, just try to Dry it as much as possible (if you like, you can take its battery off first). When its inside dry, it will be OK. I have a Fluke 52 II, this happened many times now. After it back, everything is OK, it has passed its calibration well.

Take it to your nearest service centre. it could be the PCB which is giving problem

You should take it to the dealer and ask for the unlock code and the procedure for your radio for your year, make, and model car and radio combination.

You might be able to punch in the codes yourself, if they are kind enough to tell you how.

Good luck on this repair.

cal error is not a big deal it is just a programming adjustment, it is not the cause of the cd fault. GM radios have a history of cd drive failures. we fix them alot. if you buy another used radio then you will need to reprogram it to work with your truck. or getting it fixed will not need to get programmed.

Hold down all three buttons and the device will reset itself.