Trying to decipher 01 WJ AZC Codes

[xj^REMY]

Tried posting on other boards, but not getting any response... Maybe someone here can help out

Finally experiencing the typical WJ broken blend door issue... Dual Climate Control, no heat on passenger side...

Per the AZC diagnostic, I have 1 current fault code...
16 = Right temperature door not responding

& historical fault codes...
51 = AI (Recirc) door travel range too small
53 = Left temperature door travel too small
54 = Left temperature door travel too large

I will be replacing the blend doors with... http://blendorstore.com/l

...Pending on the accuracy of the fault codes 16 & 51

The recirculating door is functioning... I visually verified by lowering the glove compartment & cycling the recirculating mode on/off... & I feel the air difference... If this code means there's something wrong with the recirculating door/actuator, I'm pulling the dash & HVAC box

& per http://blendorstore.com/faq...

Question - I have a fault code of #16 when I do the test, you say that is likely the actuator motor failing. I'm wondering if the broken blend door could be binding the actuator not letting it turn and have the same code.

16 = Right temperature door not responding. This is the code that indicates the passenger’s side actuator motor problem.

If the blend doors are binding and causing the actuator motor to stop, you would have the #23 or #55 - Right temperature door travel to small.

The blend doors would have to be broken for them to bind and the broken blend doors would show a fault code.

As this motor is behind the HVAC box on the firewall side, it can not be accessed without removing the dashboard and HVAC box from the vehicle.

Without cutting an access hole in the HVAC box for a visual check, you will have to rely on the Fault Code system for this actuator motor problem.

:dunno:

I dont have a 55... So does it mean the passenger side blend door actuator IS busted??

My other uncertainty, is code 51 an isolated issue, or is the diagnostics mis-diagnosing because of the other malfunctions??

I dont want to waste time hacking an access/maintenance hole into the HVAC box, if it has to come completely out anyways.

Anybody have any ideas/insight??

 

[jeeptech1]

just pull the hvac housing and split the case. you are just gonna give yourself a headache trying to figure out what codes are real. ive found when it comes to wj's just pull it apart and see what doors are broken and then replace them. actuators dont usually go out. just my 2 cents

 

[xj^REMY]

thanks... im leaning in that direction... i dont want to have to go thru pulling the dash again for a mode door in a year, so i think all doors will be replaced