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Discussion Starter #1
The climate control unit has a self-diagnostic function. To run the self-diagnostic function, do the following:

1. Turn the ignition switch to LOCK (0) and then back to ON (II).

2. Press and hold the ON/OFF button, then within 10 seconds press and release the REAR WINDOW DEFOGGER/MIRROR DEFOGGER button
five times. Release the ON/OFF button.

3. ALL LCD segments come on for 2 seconds, then the self-diagnostic function begins.

NOTE:

  • The blower motor will run at various speeds regardless of what the panel is displaying.
  • If there is any problem in the system, the temperature indicator flashes 88. Refer to checking for DTCs.
  • If there is more than one DTC, they are displayed one at a time in sequence followed by a pause (all the display indicator segments illuminate) between the DTCs.
  • If there are no problems detected, the system will flash NO.
4. Turn the ignition switch to LOCK (0) to cancel the self-diagnostic function. After completing repair work, run the self-diagnostic function again to make sure that there are no other DTCs.

How to check the past DTC's

The climate control unit can record DTCs of the past trouble. How to read the past DTC is as follows.

1. Turn the ignition switch to LOCK (0), and then back to ON (II).

2. Press and hold both the AUTO and ON/OFF buttons.

3. During press and hold both the AUTO and ON/OFF buttons, and the past trouble is indicate.

NOTE:

  • If there is any problem in the system, the temperature indicator flashes 88. Refer to checking for DTCs.
  • If there is more than one DTC, they are displayed one at a time in sequence followed by a pause (all the display indicator segments
  • If there are no problems detected, the system will flash no.


How to Clear the Past DTCs:

1. Turn the ignition switch to LOCK (0).

2. Press and hold both the AUTO and WINDSHIELD DEFROSTER buttons, then turn the ignition switch to ON (II).

3. After about 5 seconds the windshield defroster indicator starts to blink, release the buttons.

4. Do the How to check the past DTCs to verify DTCs have been cleared.


Run the Sensor Input Display Mode:

1. Press and hold both the AUTO and RECIRCULATION buttons, then start the engine.

2. After the engine starts, release both buttons. The climate control unit will flash the sensor number and then the value for that sensor. Record
the value displayed.

3. To advance to the next sensor, press the REAR WINDOW DEFOGGER/MIRROR DEFOGGER button.

4. To cancel the sensor input display mode, press the AUTO button or turn the ignition switch to LOCK (0).

NOTE:
  • The sensor values will be displayed in degrees Celsius (°C) or an alphanumeric code. Use the chart to convert the value to degrees
  • Fahrenheit (°F).
  • If the sensor value displays ‘‘Er’’, this indicates there is an open or short in the circuit or sensor. Check for DTCs using the HDS, or use
  • the climate control self-diagnostic function.
  • If necessary, compare the sensor input display to a known-good vehicle under the same test conditions.
  • If the sensor displayed value is out of the normal range, refer to the sensor test or substitute a known-good sensor, and recheck.
 

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Premium Member
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873 Posts
Well done Bog... There must be some tricks to do with I-MID as well, hopefully someone will update us...
 

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Premium Member
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6,455 Posts
Discussion Starter #3
Well done Bog... There must be some tricks to do with I-MID as well, hopefully someone will update us...
Yep, I'm convinced there is another hidden menu other than the 'Diag' one... not much info about.

Got the above from the US as it applies to USDM 2013 Civic which used the same HVAC system as ours, just a different looking switch unit.
 

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my module it's showing an ''E9'' in the A (vent temperature air out) sensor when running the sensor input display mode

it's this an indicator of a bad sensor or a short circuit??


thanks for your help!
 
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