Engine swap from z18xe to z22yh

2006 HOLDEN ASTRA
214,172 MILES • 2.2L • 4 CYL • 2WD • AUTOMATIC
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HANSWILFRED
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  • 2 POSTS
Checked air conditioning, no signal from switch.
checked operation from fuse panel to compressor, all okay.
command A/C rely with ACU all okay. test HVAC module to ACU all okay. social data between ECU and HVAC controls.

Advised by mechanic that incorrect codes/running gear.
Feb 10, 2020 at 3:04 AM
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STEVE W.
  • ✓ASE Certified Mechanic
  • 15,200 POSTS
  • ASE Certified Mechanic
What parts were swapped to make the new engine run? The most likely issue is what the mechanic said, If you used the ECU from a 2.2 engine but the body module and controls are the 1.8 parts then are not able to communicate with each other. However, I would expect far more than just the A/C being effected. Do all the other items on the car work and just no A/C?
Feb 10, 2020 at 9:06 AM
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HANSWILFRED
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Hello sir, as of the moment the A/C is the only one not working. there are no running electric current for it. i don't know if it's applicable to reprogram the car.
Feb 10, 2020 at 6:37 PM
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STEVE W.
  • ✓ASE Certified Mechanic
  • 15,200 POSTS
  • ASE Certified Mechanic
If it is only the AC and it worked prior to the swap I would look at the wiring to it very close. Have seen more than a few pinched wires after a swap. Did you use the same AC parts that were on the car originally? Do you have access to a factory level scan tool that would allow you to test the CAN bus signals to the controller and verify that it is sending the command signal? Lastly if you used the PCM for the 2.2 do you know if the AC on it worked?
Feb 10, 2020 at 6:52 PM
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