RM38T0EC _58 Vehicle Interior _104612 HEATING / AIR CONDITIONING _0601796 AIR CONDITIONING SYSTEM(for HEV Model) C

HEATING / AIR CONDITIONING  AIR CONDITIONING SYSTEM(for HEV Model)  B140587  Lost Communication with Front Air Mix Damper Control Servo Motor LIN Missing Message  


DESCRIPTION

The air conditioning harness assembly connects the air conditioning amplifier assembly and the No. 1 air conditioning radiator damper servo sub-assembly.

The air conditioning amplifier assembly supplies power and sends operation instructions to No. 1 air conditioning radiator damper servo sub-assembly through the air conditioning harness assembly.

The No. 1 air conditioning radiator 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
B140587 Lost Communication with Front Air Mix Damper Control Servo Motor LIN Missing Message Diagnosis Condition:

Ignition switch ON


Malfunction Status:

Error or lost communication with No. 1 air conditioning radiator damper servo sub-assembly


Detection Time:

Continuously for 10 seconds or more


No. 1 air conditioning radiator damper servo sub-assembly Memorized

DTC Detection Condition Combination Table
Vehicle Condition
Pattern 1 Pattern 2
Diagnosis Condition Ignition switch ON ○ ○
Malfunction Error communication with No. 1 air conditioning radiator damper servo sub-assembly ○ -
Lost communication with No. 1 air conditioning radiator 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

w/ Rear Air Duct
E521188E14
1.865,1.208 2.177,1.406 0.313,0.198 10 false IC 0.448,2.552 2.354,3.125 1.906,0.573 10 false No. 1 Air Conditioning Radiator Damper Servo Sub-assembly 3.167,2.573 4.708,3.177 1.542,0.604 10 false Air Conditioning Harness Assembly 5.396,2.563 6.969,3.25 1.573,0.688 10 false Air Conditioning Amplifier Assembly 0.76,3.333 3.083,3.677 2.323,0.344 10 false : LIN Communication Line 6.229,0.5 6.542,0.698 0.313,0.198 10 false +B 6.625,1.177 6.938,1.375 0.313,0.198 10 false IC 5.417,0.563 6.188,0.76 0.771,0.198 10 false B BUS 5.417,1.083 5.875,1.281 0.458,0.198 10 false BUS 5.406,1.604 6.177,1.802 0.771,0.198 10 false BUS G 0.552,2.094 1.75,2.375 1.198,0.281 10 false Front Air Mix

w/o Rear Air Duct
E521188E19
1.865,1.208 2.177,1.406 0.313,0.198 10 false IC 0.448,2.552 2.354,3.125 1.906,0.573 10 false No. 1 Air Conditioning Radiator Damper Servo Sub-assembly 3.167,2.573 4.708,3.177 1.542,0.604 10 false Air Conditioning Harness Assembly 5.396,2.563 6.969,3.25 1.573,0.688 10 false Air Conditioning Amplifier Assembly 0.76,3.333 3.083,3.677 2.323,0.344 10 false : LIN Communication Line 6.229,0.5 6.542,0.698 0.313,0.198 10 false +B 6.625,1.177 6.938,1.375 0.313,0.198 10 false IC 5.417,0.563 6.188,0.76 0.771,0.198 10 false BUSB 5.417,1.083 5.875,1.281 0.458,0.198 10 false BUS 5.406,1.604 6.177,1.802 0.771,0.198 10 false BUSG 0.552,2.094 1.75,2.375 1.198,0.281 10 false Front Air Mix

PROCEDURE

1.CHECK FOR 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 DTC B142A88

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


B

REPLACE NO. 1 AIR CONDITIONING RADIATOR DAMPER SERVO SUB-ASSEMBLY

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