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2007 Escalade ESV AC snowflake blinks.
3 years 3 months ago #46627
by Velez
2007 Escalade ESV AC snowflake blinks. was created by Velez
AC BLOWS WARM AIR. (Front and back)
Was finally able to get snowflake to light. But it only blinks 3 times and goes off.
I just got a MAXICOM 808BT.
What reading values should I be looking for to determine if it’s the ambient air temp sensor like most users guess is the issue?
I’m aware of other issues it may be and hoping I could read the MAXICOM data to narrow down the issue. I’m looking for help deciphering Maxicom Readings
Was finally able to get snowflake to light. But it only blinks 3 times and goes off.
I just got a MAXICOM 808BT.
What reading values should I be looking for to determine if it’s the ambient air temp sensor like most users guess is the issue?
I’m aware of other issues it may be and hoping I could read the MAXICOM data to narrow down the issue. I’m looking for help deciphering Maxicom Readings
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3 years 3 months ago #46629
by Tyler
Replied by Tyler on topic 2007 Escalade ESV AC snowflake blinks.
Check the A/C pressure sensor reading in the PCM. If it's near zero, that'd be why the light flashes. :lol: Find out where the refrigerant went.
You can also check the A/C Disable history in the PCM. Should store the last eight reasons it disabled the A/C.
You can also check the A/C Disable history in the PCM. Should store the last eight reasons it disabled the A/C.
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3 years 3 months ago #46634
by Velez
Replied by Velez on topic 2007 Escalade ESV AC snowflake blinks.
Awesome! Thx so much!
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3 years 3 months ago #46635
by RJMARRA
Replied by RJMARRA on topic 2007 Escalade ESV AC snowflake blinks.
I Found & attached a TSB on this issue.
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3 years 3 months ago #46650
by Velez
Replied by Velez on topic 2007 Escalade ESV AC snowflake blinks.
Very helpful thx !!
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3 years 2 months ago #47331
by Velez
Replied by Velez on topic 2007 Escalade ESV AC snowflake blinks.
AC disable history. RPM unstable.
Was able to get snowflake to come on after pulling a vacuum and adding refrigerant. Had to jump relay to get compressor to engage. Compressor clicks on and off quickly with relay installed. High pressure not holding. AC not cold. Ambient air temp sensor shows accurate in sacanner.
No, I did not add any dye. I’m guessing that’s my next step.
Was able to get snowflake to come on after pulling a vacuum and adding refrigerant. Had to jump relay to get compressor to engage. Compressor clicks on and off quickly with relay installed. High pressure not holding. AC not cold. Ambient air temp sensor shows accurate in sacanner.
No, I did not add any dye. I’m guessing that’s my next step.
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