Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM1000000028C3K |
Model Year Start: 2023 |
Model: GR Corolla |
Prod Date Range: [11/2022 -
] |
Title: HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Gasoline Model with Automatic Air Conditioning System): B14037F; Front Air Outlet Damper Control Servo Motor Actuator Stuck Off; 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [11/2022 - ] |
DTC
|
B14037F
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Front Air Outlet Damper Control Servo Motor Actuator Stuck Off
|
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 assembly activates the motor (normal or reverse) based on these signals to move the air outlet damper to the appropriate position, which controls the air outlet switching.
DTC No.
|
Detection Item
|
DTC Detection Condition
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Trouble Area
|
Memory
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B14037F
|
Front Air Outlet Damper Control Servo Motor Actuator Stuck Off
|
Diagnosis Condition:
-
No. 1 air conditioning radiator damper servo sub-assembly operating
Malfunction:
-
Damper servo operation request signals are output but the damper position sensor value does not change.
-
Damper servo operation request signals are output but the damper position sensor value is abnormal.
Detection Time:
-
Continuously for 30 seconds or more
|
-
No. 1 air conditioning radiator damper servo sub-assembly
-
Air conditioning harness assembly
-
Air conditioning radiator assembly
|
Memorized
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DTC Detection Condition Combination Table
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Vehicle Condition
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Pattern 1
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Pattern 2
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Diagnosis Condition
|
No. 1 air conditioning radiator damper servo sub-assembly operating
|
○
|
○
|
Malfunction
|
Damper servo operation request signals are output but the damper position sensor value does not change.
|
○
|
-
|
Damper servo operation request signals are output but the damper position sensor value is abnormal.
|
-
|
○
|
Detection Time
|
Continuously for 30 seconds or more
|
Continuously for 30 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
for M20A-FKS
for Single Type:
for Dual Type:
for G16E-GTS
for Single Type:
for Dual Type:
CAUTION / NOTICE / HINT
NOTICE:
-
This DTC is also output for the damper link, damper lock, etc. Before performing inspection, perform servomotor initialization and check that there are no mechanical malfunctions.
Click here
-
This DTC is also output when servomotor initialization has failed. When servomotor initialization has failed, repair any malfunctions and perform servomotor initialization again.
Click here
PROCEDURE
1.
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CHECK NO. 1 AIR CONDITIONING RADIATOR DAMPER SERVO SUB-ASSEMBLY (INSTALLATION CONDITION)
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(a) Check that the No. 1 air conditioning radiator damper servo sub-assembly is installed correctly.
Click here
OK:
No. 1 air conditioning radiator damper servo sub-assembly is installed correctly.
OK
|
|
|
2.
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CHECK NO. 1 AIR CONDITIONING RADIATOR DAMPER SERVO SUB-ASSEMBLY (MOTOR, LINK, DAMPER)
|
(a) Check for a wire harness caught between the links of the motors and dampers.
OK:
No wire harnesses are caught between the links of the motors and dampers.
NG |
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REMOVE PINCHED WIRE HARNESS
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OK
|
|
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3.
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CHECK AIR CONDITIONING RADIATOR ASSEMBLY (DAMPER)
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(a) Remove the No. 1 air conditioning radiator damper servo sub-assembly.
Click here
(b) Operate the dampers by hand.
OK:
The dampers are easily operated by hand.
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