Toyota Corolla Cross: Lost Communication with Front Left Air Mix Damper Control Servo Motor LIN Missing Message (B144B87)
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 |
|---|---|---|---|---|
| B144B87 |
Lost Communication with Front Left Air Mix Damper Control Servo Motor LIN Missing Message |
Diagnosis Condition:
Malfunction Status:
Detection Time:
| No. 1 air conditioning radiator damper servo sub-assembly |
Memorized |
|
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
.png)
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 |
.gif) | GO TO DTC B142A88 |
| B |
| REPLACE NO. 1 AIR CONDITIONING RADIATOR DAMPER SERVO SUB-ASSEMBLY |
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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
Lost Communication with Front Right Air Mix Damper Control Servo Motor LIN Missing Message (B145A87)
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 ass
Front Right Air Mix Damper Control Servo Motor Actuator Stuck Off (B145B7F)
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:
Sensor Frozen Indication (Dirty or Frozen)
DESCRIPTION
When the ultrasonic sensor is dirty or frozen, "Parking Assist
Unavailable Please Clean Parking Assist Sensor" is displayed on the multi-information
display in the combination meter assembly.
PROCEDURE
1.
CHECK FOR DTC
(a) Clear the DTCs.
Precaution
PRECAUTION NOTICE: When disassembling the headlight assembly, use static electricity countermeasures SST (desktop anti-static mat set) and observe all precautions to prevent damage to the system by electrostatic discharge (ESD).
STATIC ELECTRICITY COUNTERMEASURES SST SST: Desktop antistatic mat set
