X-Type 2002 A/C Climate Control panel buttons not lighting up
#1
03-27-2022 | 02:31 AM
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From: Brisbane
#3
03-28-2022 | 03:15 PM
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Joined: Feb 2021
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From: Christchurch
Hi Kasino,
I will assume you have the automatic climate control system in your 2002 car, not the manual version.
Do you have any displayed figures in the climate control LCD....temp etc?
When you say heater is not working....are you able to get heater fan to operate and step up and down in fan speed?
Are you able to command air direction changes to the different vents?
Are the missing lights you initially referred to are the mode switch lights in the centre of the AC, Auto and recirculate buttons?
Are there any other features of the car (aside form the climate control) that you have noticed malfunctioning?
To get you underway, there are three separate fuses located in the central junction fuse box that provide supply lines to the climate control module. Fuse box is located in the passenger side foot well - for the right hand drive model you likely have.
That would be the first place to start, confirming that all three fuses are intact good fuses.
Fuse F75: 7.5Amp
Fuse F80: 7.5Amp
Fuse F99: 10 Amp
Next; if the fuses are all good, then you might just want to check you have not lost the earth return connectivity from plug IP101 pin 15 of the climate control module to ground (black wire).
Finally; if fuses are OK and you have a good earth to the control module, you are probably then looking to take the module out, opening it and inspecting it for any burnt copper tracks or burnt electronic components.
I will assume you have the automatic climate control system in your 2002 car, not the manual version.
Do you have any displayed figures in the climate control LCD....temp etc?
When you say heater is not working....are you able to get heater fan to operate and step up and down in fan speed?
Are you able to command air direction changes to the different vents?
Are the missing lights you initially referred to are the mode switch lights in the centre of the AC, Auto and recirculate buttons?
Are there any other features of the car (aside form the climate control) that you have noticed malfunctioning?
To get you underway, there are three separate fuses located in the central junction fuse box that provide supply lines to the climate control module. Fuse box is located in the passenger side foot well - for the right hand drive model you likely have.
That would be the first place to start, confirming that all three fuses are intact good fuses.
Fuse F75: 7.5Amp
Fuse F80: 7.5Amp
Fuse F99: 10 Amp
Next; if the fuses are all good, then you might just want to check you have not lost the earth return connectivity from plug IP101 pin 15 of the climate control module to ground (black wire).
Finally; if fuses are OK and you have a good earth to the control module, you are probably then looking to take the module out, opening it and inspecting it for any burnt copper tracks or burnt electronic components.
The following users liked this post:
Kasino (03-29-2022)
#4
03-29-2022 | 01:50 AM
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From: Brisbane
Hi h2o2steam,
Thanks for the reply.
I checked the fuses.. All good.
The LCD Displays the Temp when changing up and down. No HEAT.
Fan dial is working, Fan blower works, All air directions work And display in the LCD.
Auto button works (no led light) and displays in the LCD
Recycle, A/c, Def and Rear demister buttons work BUT No led light in the buttons & does not display in the LCD.
As for other issues:
I checked the car with an OBDII reader and all 4 O2 sensors have errors.
Regards Kasino
Thanks for the reply.
I checked the fuses.. All good.
The LCD Displays the Temp when changing up and down. No HEAT.
Fan dial is working, Fan blower works, All air directions work And display in the LCD.
Auto button works (no led light) and displays in the LCD
Recycle, A/c, Def and Rear demister buttons work BUT No led light in the buttons & does not display in the LCD.
As for other issues:
I checked the car with an OBDII reader and all 4 O2 sensors have errors.
Regards Kasino
#5
03-29-2022 | 07:10 PM
Veteran Member
Joined: Feb 2021
Posts: 5,459
Likes: 2,015
From: Christchurch
It's weird you have O2 sensor errors on all four. They are powered in pairs from the Power Distribution Fuse Box (under bonnet by brake booster).
You are looking for fuses F38 and F42 (both 30A).
The common earth grounds the two downstream sensors and provides only cable sheathing screening to the two upstream sensors.
That all comes back via Brown/Red stripe wire to ECM plug EN16 pin 130.
Harness problems are pretty common with chaffing or stress fractures of older wires now, so check to see if you have earth continuity getting to the downstream sensor plugs after you have checked the two supply fuses.
As for the heater operation and missing button LEDs......I think you might have two separate issues there.
I haven't had any reason or misfortune to need to open up the climate control module on my X-Type yet, but generally those button LEDs might have a common supply line feeding them and the light likely illuminates when the processor acknowledges the button press and 'grounds' the LED circuit to illuminate the light. For all such lights to not be working, then it is likely a common supply line or regulator in the control module has failed.....not likely an external problem.
So unless you have suitable electronic skills to trace that out, you might be looking for a replacement module to quickly solve that problem.
As for the "no heater" operation, seeing you have LCD display, fan up and down control and physical fan motor operation, the likely issue is either insufficient water flow through the heater core due to the core being plugged with sediments, or the heater air control flap is not being opened to allow air passing though the core into the heater distribution chamber. That might be a bad electric actuator or a failed or disengaged drive shaft from the heater control actuator to its diverter flap. There have been other members with demisting problems with diverter flaps out of mechanical registration, sometimes using some glue to re-secure once aligned.
You are looking for fuses F38 and F42 (both 30A).
The common earth grounds the two downstream sensors and provides only cable sheathing screening to the two upstream sensors.
That all comes back via Brown/Red stripe wire to ECM plug EN16 pin 130.
Harness problems are pretty common with chaffing or stress fractures of older wires now, so check to see if you have earth continuity getting to the downstream sensor plugs after you have checked the two supply fuses.
As for the heater operation and missing button LEDs......I think you might have two separate issues there.
I haven't had any reason or misfortune to need to open up the climate control module on my X-Type yet, but generally those button LEDs might have a common supply line feeding them and the light likely illuminates when the processor acknowledges the button press and 'grounds' the LED circuit to illuminate the light. For all such lights to not be working, then it is likely a common supply line or regulator in the control module has failed.....not likely an external problem.
So unless you have suitable electronic skills to trace that out, you might be looking for a replacement module to quickly solve that problem.
As for the "no heater" operation, seeing you have LCD display, fan up and down control and physical fan motor operation, the likely issue is either insufficient water flow through the heater core due to the core being plugged with sediments, or the heater air control flap is not being opened to allow air passing though the core into the heater distribution chamber. That might be a bad electric actuator or a failed or disengaged drive shaft from the heater control actuator to its diverter flap. There have been other members with demisting problems with diverter flaps out of mechanical registration, sometimes using some glue to re-secure once aligned.
Last edited by h2o2steam; 03-30-2022 at 02:46 AM.
The following users liked this post:
Kasino (04-01-2022)
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