| Last Modified: 07-31-2024 | 6.11:8.1.0 | Doc ID: RM1000000026Z3R |
| Model Year Start: 2023 | Model: Corolla | Prod Date Range: [09/2022 - ] |
| Title: HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for HV Model): B140587; Lost Communication with Front Air Mix Damper Control Servo Motor LIN Missing Message; 2023 - 2025 MY Corolla Corolla HV [09/2022 - ] | ||
|
DTC |
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 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 |
|---|---|---|---|---|
|
B140587 |
Lost Communication with Front Air Mix Damper Control Servo Motor LIN Missing Message |
Diagnosis Condition:
Malfunction:
Detection Time:
|
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 in communication line between air conditioning amplifier assembly and No. 1 air conditioning radiator damper servo sub-assembly |
○ |
- |
|
Open in communication line between air conditioning amplifier assembly and 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 |
|---|---|
|
DTC B142A88 is output |
A |
|
DTC B142A88 is not output |
B |
| A |
|
| B |
|
REPLACE NO. 1 AIR CONDITIONING RADIATOR DAMPER SERVO SUB-ASSEMBLY |
|
|