Thursday, February 6, 2020

2010 Acura Truck MDX V6-3.7L Page 1


A L L Diagnostic Trouble Codes ( DTC ): Manufacturer Code Charts



A and Auto



DTC Troubleshooting: B1225 (A and AUTO)



DTC B1225 or DTC indicator A and AUTO:



An Open in the In-Car Temperature Sensor Circuit



1. Clear the DTCs with the HDS.



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



3. Do the self-diagnostic function with the HDS or the climate control unit.



4. Check for DTCs.



Is DTC B1225 or A and AUTO indicated?



YES -



Go to step 5.



NO -



Intermittent failure, check for loose wires or poor connections in the in-car temperature sensor circuit.?



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



6. Remove the humidity/in-car temperature sensor See: Heating and Air Conditioning/Cabin Temperature Sensor / Switch/Service and Repair,



and test it.



Is the in-car temperature sensor OK?



YES -



With the humidity/in-car temperature sensor disconnected, go to step 7.



NO -



Replace the humidity/in-car temperature sensor See: Heating and Air Conditioning/Cabin Temperature Sensor / Switch/Service and Repair.?



7. Disconnect climate control unit connector A (40P).



8. Check for continuity between climate control unit connector A (40P) terminal No. 5 and humidity/in-car temperature sensor 4P connector

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