Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Lost Communication with Front Air Outlet Damper Control Servo Motor LIN Missing Message (B140287)

DESCRIPTION

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

The No. 1 air conditioning radiator damper servo sub-assembly sends damper position information to the air conditioning amplifier assembly.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Memory

B140287

Lost Communication with Front Air Outlet 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

PROCEDURE

1.

CHECK FOR DTC

(a) Check for DTCs.

Body Electrical > Air Conditioner > Trouble Codes

Result

Proceed to

B142A88 is output

A

B142A88 is not output

B

A

GO TO DTC B142A88

B

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

    READ NEXT:

     Front Air Outlet Damper Control Servo Motor Actuator Stuck Off (B14037F)

    DESCRIPTION The No. 1 air conditioning radiator damper servo sub-assembly sends pulse signals to inform the air conditioning amplifier assembly of the damper position. The air conditioning amplifier

     Lost Communication with Front Air Mix Damper Control Servo Motor LIN Missing Message (B140587)

    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 a

     Front Air Mix Damper Control Servo Motor Actuator Stuck Off (B14067F)

    DESCRIPTION The No. 1 air conditioning radiator damper servo sub-assembly sends pulse signals to inform the air conditioning amplifier assembly of the damper position. The air conditioning amplifier a

    SEE MORE:

     Road Test

    ROAD TEST PROBLEM SYMPTOM CONFIRMATION (a) Based on the result of the customer problem analysis, try to reproduce the symptoms. If the problem is that the transaxle does not change gear ratios or changes ratios at the wrong engine speed, conduct the following road test while referring to the

     On-vehicle Inspection

    ON-VEHICLE INSPECTION CAUTION / NOTICE / HINT CAUTION: When working near the engine room while the engine has started or the power source mode is ignition switch to ON, do not touch the rotating components such as the fan, etc. Touching rotating components such as the fan, etc. could re

    © 2020-2025 Copyright www.tcorollacross.com PT NL