RM36D0EC _58 Vehicle Interior _083104 HEATING / AIR CONDITIONING _0402828 AIR CONDITIONING SYSTEM(for Gasoline Model) C

HEATING / AIR CONDITIONING  AIR CONDITIONING SYSTEM(for Gasoline Model)  B143A87  Lost Communication with Air Inlet Damper Control Servo Motor LIN Missing Message  


DESCRIPTION

The air conditioning harness assembly and No. 1 air conditioning radiator damper servo sub-assembly connect the air conditioning amplifier assembly and the No. 1 blower damper servo sub-assembly. The air conditioning amplifier assembly supplies power and sends operation instructions to No. 1 blower damper servo sub-assembly through the air conditioning harness assembly and No. 1 air conditioning radiator damper servo sub-assembly. The No. 1 blower damper servo sub-assembly sends pulse signals to inform the air conditioning amplifier assembly of the damper position.

DTC No. Detection Item DTC Detection Condition Trouble Area Memory
B143A87 Lost Communication with Air Inlet Damper Control Servo Motor LIN Missing Message
Diagnosis Condition:

Ignition switch ON


Malfunction Status:

Error or lost communication with No. 1 blower damper servo sub-assembly


Detection Time:

Continuously for 10 seconds or more


·

No. 1 blower damper servo sub-assembly

·

Air conditioning harness assembly


Memorized

DTC Detection Condition Combination Table
Vehicle Condition
Pattern 1 Pattern 2
Diagnosis Condition Ignition switch ON ○ ○
Malfunction Error communication with No. 1 blower damper servo sub-assembly ○ -
Lost communication with No. 1 blower damper servo sub-assembly - ○
Detection Time Continuously for 10 seconds or more Continuously for 10 seconds or more
Trip Count 1 trip 1 trip

HINT:

If the conditions of either of these patterns are detected, a DTC will be stored.


WIRING DIAGRAM

E396770E01
5.042,0.708 5.813,0.906 0.771,0.198 10 false BUS 5.031,1.094 5.802,1.292 0.771,0.198 10 false B BUS 5.052,1.49 5.823,1.688 0.771,0.198 10 false BUS G 4.76,0.677 5.01,0.875 0.25,0.198 10 false 3 4.76,1.104 5.01,1.302 0.25,0.198 10 false 4 4.771,1.479 5.021,1.677 0.25,0.198 10 false 2 1.042,1.135 1.75,1.573 0.708,0.438 10 false Driver Side Air Mix 0.99,3.958 2.063,4.177 1.073,0.219 10 false Front Mode 0.771,4.896 2.688,5.563 1.917,0.667 10 false No. 1 Air Conditioning Radiator Damper Servo Sub-assembly 0.875,7.5 2.573,8 1.698,0.5 10 false No. 1 Blower Damper Servo Sub-assembly 3.156,7.438 4.698,7.875 1.542,0.438 10 false Air Conditioning Harness Assembly 4.729,8.083 5.5,8.281 0.771,0.198 10 false z11 4.719,8.25 6.99,8.5 2.271,0.25 10 false Air Conditioning Amplifier Assembly 0.885,8.563 3.26,8.823 2.375,0.26 10 false : LIN Communication Line 6.021,0.823 6.792,1.021 0.771,0.198 10 false IC 6.333,0.938 7.104,1.135 0.771,0.198 10 false +B 0.75,2.448 1.823,2.802 1.073,0.354 10 false Front Passenger Side Air Mix

PROCEDURE

1.CHECK DTC
a.

Check for DTCs.

Body Electrical > Air Conditioner > Trouble Codes
50001 450

Result:
Result Proceed to
B142A88 is output A
B142A88 is not output B



A

GO TO B142A88

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING SYSTEM (for Gasoline Model)>B142A88


B

CHECK NO. 1 BLOWER DAMPER SERVO SUB-ASSEMBLY

Click hereVehicle Interior>HEATING / AIR CONDITIONING>BLOWER UNIT>DISASSEMBLY