. Using the Fan and Mode switches to raise or lower the data number: ºC spec. The on-board diagnosticsactually allows full readout of it's data and adjustments to how it functionsbesides just returning error codes. Use the Fan switch to toggle through the menu items. Use the Mode switch to toggle through the menu items.
Blower is working and air flow is strong. I get very strong air flow from defroster vents but air tempature is always cold. Ambient tempature reading is correct. Read my extremely long post that I wrote a while back and it will explain everything. It may be the door actuators themselves, but it could also be your climate control panel.
I've seen this happen before, and more often it was the venting doors, but it could be the panel still I've seen failures of those as well. If you have any further questions about it just ask me and I can probably help you out. One side note - if you do manage to borrow a climate pod, it must be from a 91-96 Z, as the 90 model had a panel that functioned differently and is not compatible with your 93. During the summer the air conditioner was working fine. Use the Mode switch and the Fan switch to toggle through the menu items. The stepmonitor will have the right single dash lit step 3 in 1. I have not hot air in the 1990 2+2 with the auto climate system.
The step monitor should be 3 dashes step 5in 1. Its a pain to fix but I was able to do it. Mode and fan speed can be set independently. This will activate the Monitor DiagnosisMode step 3 in 1. Thestep monitor should be the right two dashes lit step 4 in 1. Difference between upper and lower target temperatures -2. Data -20 to -1 0 1 to 20 ºC spec.
I'm not really sure what mine means with a 49 listed. Difference between upper and lower target temperatures -3. If their panel functions just like yours, then you have problems inside the dash with the vent door actuators. A ' ' hash in the step monitor on the left indicatesan open circuit. When the upper and lower venticon appears, a stabilized outlet temperature 30ºC 86ºF is reachedafter the air mix door has be working for about a minute. Temperaturedata is returned in the display's 'Set' digits. Desired internal tempature setting works correctly.
One of the more complexsubsystems in the Z32 is the climate control. A dash '-' in the step monitor to the far leftindicates a short circuit. Thestep monitor should be 2 dashes with a space in-between step 6 in 1. All controls seem to be working. Sounds like you have the same problem I had last winter!!!! AutoClimate Control Diagnostics: The auto climate control has anon-board self diagnostic to solve control problems. It's a problem with the switching of the vent doors in the climate ducting inside the dash. Trouble Codes: The auto climate control stores error codes for later retrieval.
Use the Fan and Mode switches to raise or lower the code to change thedesired data or status reading returned. What you can do is, if you know someone else with a Z, borrow their climate panel it's easy to remove - two screws on the bottom of the pod, a little finagling with the hazard switch, and then unplugging the harnesses in the back , install it in your car, and try it out - if you are able to control the heat ducts at will with their panel, then yours has failed. The 'Set' digits in the display will show how much of adifference by 'data' numbers in relation to temperature difference. Monitor Diagnosis Mode: The control unit will display temperature data in this mode. To enter a diagnostic mode: 1. This is worked out from the '95 manual.
Data -36 to -2 0 2 to 36 ºF spec. . . . . .