Last Modified: 07-31-2024 |
6.11:8.1.0 |
Doc ID: RM1000000026Z8A |
Model Year Start: 2023 |
Model: GR Corolla |
Prod Date Range: [09/2022 - 11/2022] |
Title: HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for TMC Made, and Gasoline Model, with Automatic Air Conditioning System): B14067F; Front Air Mix Damper Control Servo Motor Actuator Stuck Off; 2023 MY Corolla Corolla Hatchback GR Corolla [09/2022 - 11/2022] |
DTC
|
B14067F
|
Front Air Mix 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
|
Trouble Area
|
Memory
|
B14067F
|
Front Air Mix 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
|
DTC Detection Condition Combination Table
|
Vehicle Condition
|
Pattern 1
|
Pattern 2
|
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 G16E-GTS:
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
(a) Check for DTCs.
Body Electrical > Air Conditioner > Trouble Codes
Result
|
Proceed to
|
B14067F is output
|
A
|
DTCs in conjunction with No. 1 air conditioning radiator damper servo sub-assembly are output at same time
|
B
|
A
|
|
|
2.
|
CHECK NO. 1 AIR CONDITIONING RADIATOR DAMPER SERVO SUB-ASSEMBLY (INSTALLATION CONDITION)
|
(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
|
|
|
3.
|
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 |
|
REMOVE PINCHED WIRE HARNESS
|
OK
|
|
|
4.
|
PERFORM ACTIVE TEST USING GTS
|
(a) Perform the Active Test according to the display on the GTS.
Body Electrical > Air Conditioner > Active Test
Tester Display
|
Measurement Item
|
Control Range
|
Diagnostic Note
|
Front Air Mix Damper Control Servo Motor
|
This test activates the front air mix damper control servo motor.
(No. 1 air conditioning radiator damper servo sub-assembly (air mix))
|
128: Min
384: Max
|
Operate with the ignition switch ON.
|
Body Electrical > Air Conditioner > Data List
Tester Display
|
Measurement Item
|
Range
|
Normal Condition
|
Inspection Item
|
Front Air Mix Damper Control Servo Motor Actual Pulse
|
No. 1 air conditioning radiator damper servo sub-assembly (air mix) actual pulse
|
128 to 384
|
-
MAX COLD: 257 (pulse)
-
MAX HOT: 165 (pulse)
|
No. 1 air conditioning radiator damper servo sub-assembly (air mix) circuit malfunction
|
Body Electrical > Air Conditioner > Active Test
Active Test Display
|
Front Air Mix Damper Control Servo Motor
|
Data List Display
|
Front Air Mix Damper Control Servo Motor Actual Pulse
|
OK:
The value of the Data List changes in accordance with the operation of the Active Test.
OK
|
|
|
5.
|
PERFORM ACTIVE TEST USING GTS
|
(a) Perform the Active Test according to the display on the GTS.
Body Electrical > Air Conditioner > Active Test
Tester Display
|
Measurement Item
|
Control Range
|
Diagnostic Note
|
Front Air Mix Damper Control Servo Motor
|
This test activates the front air mix damper control servo motor.
(No. 1 air conditioning radiator damper servo sub-assembly (air mix))
|
128: Min
384: Max
|
Operate with the ignition switch ON.
|
Body Electrical > Air Conditioner > Data List
Tester Display
|
Measurement Item
|
Range
|
Normal Condition
|
Inspection Item
|
Front Air Mix Damper Control Servo Motor Target Pulse
|
No. 1 air conditioning radiator damper servo sub-assembly (air mix) target pulse
|
128 to 384
|
-
MAX COLD: 257 (pulse)
-
MAX HOT: 165 (pulse)
|
No. 1 air conditioning radiator damper servo sub-assembly (air mix) circuit malfunction
|
Front Air Mix Damper Control Servo Motor Actual Pulse
|
No. 1 air conditioning radiator damper servo sub-assembly (air mix) actual pulse
|
128 to 384
|
-
MAX COLD: 257 (pulse)
-
MAX HOT: 165 (pulse)
|
No. 1 air conditioning radiator damper servo sub-assembly (air mix) circuit malfunction
|
Body Electrical > Air Conditioner > Active Test
Active Test Display
|
Front Air Mix Damper Control Servo Motor
|
Data List Display
|
Front Air Mix Damper Control Servo Motor Target Pulse
|
Front Air Mix Damper Control Servo Motor Actual Pulse
|
OK:
The target pulse value of the Data List matches the actual pulse.
NG
|
|
|
6.
|
REPLACE NO. 1 AIR CONDITIONING RADIATOR DAMPER SERVO SUB-ASSEMBLY
|
Click here
NEXT
|
|
|
7.
|
PERFORM ACTIVE TEST USING GTS
|
(a) Perform the Active Test according to the display on the GTS.
Body Electrical > Air Conditioner > Active Test
Tester Display
|
Measurement Item
|
Control Range
|
Diagnostic Note
|
Front Air Mix Damper Control Servo Motor
|
This test activates the front air mix damper control servo motor.
(No. 1 air conditioning radiator damper servo sub-assembly (air mix))
|
128: Min
384: Max
|
Operate with the ignition switch ON.
|
Body Electrical > Air Conditioner > Data List
Tester Display
|
Measurement Item
|
Range
|
Normal Condition
|
Inspection Item
|
Front Air Mix Damper Control Servo Motor Actual Pulse
|
No. 1 air conditioning radiator damper servo sub-assembly (air mix) actual pulse
|
128 to 384
|
-
MAX COLD: 257 (pulse)
-
MAX HOT: 165 (pulse)
|
No. 1 air conditioning radiator damper servo sub-assembly (air mix) circuit malfunction
|
Body Electrical > Air Conditioner > Active Test
Active Test Display
|
Front Air Mix Damper Control Servo Motor
|
Data List Display
|
Front Air Mix Damper Control Servo Motor Actual Pulse
|
OK:
The value of the Data List changes in accordance with the operation of the Active Test.
OK |
|
END
|
8.
|
PERFORM ACTIVE TEST USING GTS
|
(a) Perform the Active Test according to the display on the GTS.
Body Electrical > Air Conditioner > Active Test
Tester Display
|
Measurement Item
|
Control Range
|
Diagnostic Note
|
Front Air Outlet Damper Control Servo Motor
|
This test activates the front air outlet damper control servo motor.
(No. 1 air conditioning radiator damper servo sub-assembly (front mode))
|
128: Min
384: Max
|
Operate with the ignition switch ON.
|
Body Electrical > Air Conditioner > Data List
Tester Display
|
Measurement Item
|
Range
|
Normal Condition
|
Inspection Item
|
Front Air Outlet Damper Control Servo Motor Actual Pulse
|
No. 1 air conditioning radiator damper servo sub-assembly (front mode) actual pulse
|
128 to 384
|
-
FACE: 256 (pulse)
-
B/L: 267 (pulse)
-
FOOT-A: 288 (pulse)
-
FOOT-R (F): 297 (pulse)
-
FOOT-D: 305 (pulse)
-
F/D-R: 320 (pulse)
-
D/F: 339 (pulse)
-
DEF: 348 (pulse)
|
No. 1 air conditioning radiator damper servo sub-assembly (front mode) circuit malfunction
|
Body Electrical > Air Conditioner > Active Test
Active Test Display
|
Front Air Outlet Damper Control Servo Motor
|
Data List Display
|
Front Air Outlet Damper Control Servo Motor Actual Pulse
|
OK:
The value of the Data List changes in accordance with the operation of the Active Test.
NG
|
|
|
9.
|
CHECK AIR CONDITIONING RADIATOR ASSEMBLY (DAMPER)
|
(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.
NG |
|
REPAIR OR REPLACE AIR CONDITIONING RADIATOR ASSEMBLY
|
|