A/C Problem

Share your FORScan experience with other users
Post Reply
BetyOops
Posts: 2
Joined: Sat Mar 31, 2018 11:08 am
Vehicle: Mazda CX5 2.2 175 AWD

A/C Problem

Post by BetyOops » Wed Apr 25, 2018 3:25 pm

Hello everybody,

I have a Mazda CX5 2.2D 2014 Selection and since a few week my A/C doesn't make cold...

With Forscan i have theses DTC in EATC Module:

Code: Select all

(OK) [17:08:48.021] On Demand Self-Test has been started
(WARN) [17:08:51.095] Test completed, found DTCs: B1A63:13, B1A64:13, U0155:00
===DTC B1A63:13===
Code: B1A63 - Right Solar Sensor

Additional Fault Symptom:
- Circuit Open

Module: Electronic Automatic Temperature Control===END DTC B1A63:13===

===DTC B1A64:13===
Code: B1A64 - Left Solar Sensor

Additional Fault Symptom:
- Circuit Open

Module: Electronic Automatic Temperature Control===END DTC B1A64:13===

===DTC U0155:00===
Code: U0155 - Lost Communication With Instrument Panel Cluster Control Module

Module: Electronic Automatic Temperature Control===END DTC U0155:00===

Can someone plz help me ?

Thx you !

Vladsky
Posts: 139
Joined: Sat Aug 13, 2016 10:50 pm
Vehicle: 2017 Ferd PHEV

Re: A/C Problem

Post by Vladsky » Wed Apr 25, 2018 3:53 pm

BetyOops wrote:Hello everybody,

I have a Mazda CX5 2.2D 2014 Selection and since a few week my A/C doesn't make cold...

With Forscan i have theses DTC in EATC Module:

Code: Select all

(OK) [17:08:48.021] On Demand Self-Test has been started
(WARN) [17:08:51.095] Test completed, found DTCs: B1A63:13, B1A64:13, U0155:00
===DTC B1A63:13===
Code: B1A63 - Right Solar Sensor

Additional Fault Symptom:
- Circuit Open

Module: Electronic Automatic Temperature Control===END DTC B1A63:13===

===DTC B1A64:13===
Code: B1A64 - Left Solar Sensor

Additional Fault Symptom:
- Circuit Open

Module: Electronic Automatic Temperature Control===END DTC B1A64:13===

===DTC U0155:00===
Code: U0155 - Lost Communication With Instrument Panel Cluster Control Module

Module: Electronic Automatic Temperature Control===END DTC U0155:00===

Can someone plz help me ?

Thx you !
Howdy.

Sure. Inspect the wiring and connections to the indicated solar sensors as a start - may be a common harness. Replace the sensor(s) if necessary, as a test. Those sensors should be located on the upper dash - where they are exposed to the sun, lol.

It may also be an internal fault in the EATC - that's gonna hurt the ol' pocketbook. But - check the low-hangin' fruit first.

If you need DIY info to disassemble the dash, wiring diagrams, etc - that is out-of-scope for the forum, IMHO. Forscan has done it's job identifying the probable root cause. Now it's yer turn to complete the diagnosis and execute a physical repair.

Suggest you try a Mazda forum or a friendly Mazda dealer's parts counter. Mine will print out anything I request from service publications for free.

Salut
Vlad
Last edited by Vladsky on Wed Apr 25, 2018 4:05 pm, edited 1 time in total.

BetyOops
Posts: 2
Joined: Sat Mar 31, 2018 11:08 am
Vehicle: Mazda CX5 2.2 175 AWD

Re: A/C Problem

Post by BetyOops » Wed Apr 25, 2018 4:05 pm

Thank for your answer. I'll Check this.

In addition, I ve just montinor Some PID:

Image

AC_PRES between -7 and -10Kpa ... What is the normal value?

Mareng
Posts: 8
Joined: Mon Jan 29, 2018 9:41 pm
Vehicle: Mazda 6 Diesel, 2.2, 2014, Britain
Location: Great Britain

Re: A/C Problem

Post by Mareng » Tue May 15, 2018 10:37 pm

Another good test is to place a thermometer probe in a dash ac outlet, the difference between outside ambient ( say from your dash reading ) and the probe delivery temperature should be a minimum of 11°C, any less and you are possibly short of gas.
I assume you give the ac an ocassional run even during the winter in order to lubricate the compressor seals. Failure to do this can cause leakage of refrigerant and hence not blowing cold. Those pressures are dependant on the gas used in the system. They look like on the suction side of the compressor.

Post Reply