Toyota Tundra (2015 year). Manual — part 2280
Last Modified: 9-16-2014
6.6 C
Doc ID: RM000002VXI00XX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Manual Air Conditioning System): B1442/42; Air
Inlet Damper Control Servo Motor Circuit; 2015 MY Tundra [08/2014 - ]
DTC
B1442/42 Air Inlet Damper Control Servo Motor Circuit
DESCRIPTION
inlet damper to any position, which controls the intake air settings (FRESH, FRESH / RECIRCULATION and
RECIRCULATION).
HINT:
Confirm that no mechanical problem is present because this diagnostic trouble code can be output when
either a damper link or damper is mechanically locked.
DTC
CODE
DTC DETECTION CONDITION
TROUBLE AREA
B1442/42
Air inlet damper position sensor value does not change even if air
conditioning amplifier operated air inlet damper servo motor
Air inlet servo
motor
Air conditioning
harness
Air conditioning
amplifier
WIRING DIAGRAM
AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Manual Air...
A
NEXT
INSPECTION PROCEDURE
PROCEDURE
1.
READ VALUE USING TECHSTREAM (AIR INLET DAMPER TARGET PULSE)
(a) Use the Data List to check if the air inlet servo motor is functioning properly.
Air Conditioner
TESTER DISPLAY
MEASUREMENT ITEM / RANGE
NORMAL CONDITION
DIAGNOSTIC NOTE
Air Inlet Damper Targ Pulse
Air inlet damper target pulse /
Min.: 0, Max.: 255
REC: 7
FRS: 28
-
OK:
The display is as specified in the normal condition.
Result
RESULT
PROCEED TO
OK (Checking from the DTC)
A
OK (Checking from the PROBLEM SYMPTOMS TABLE)
B
NG
C
B
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN
PROBLEM SYMPTOMS TABLE
C
REPLACE AIR CONDITIONING AMPLIFIER
2.
REPLACE AIR INLET SERVO MOTOR
(a) Temporarily replace the air inlet servo motor with a new one
.
HINT:
Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor
with a new one and check that the condition returns to normal.
AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Manual Air...
NEXT
3.
CHECK FOR DTC
(a) Clear the DTC
.
(b) Check for DTC
.
OK:
DTC is not output.
NG
GO TO STEP 4
OK
END (AIR INLET SERVO MOTOR IS DEFECTIVE)
4.
REPLACE AIR CONDITIONING HARNESS
(a) Replace the air conditioning harness.
5.
CHECK FOR DTC
(a) Clear the DTC
.
(b) Check for DTC again
.
OK:
DTC is not output.
NG
REPLACE AIR CONDITIONING AMPLIFIER
OK
END (AIR CONDITIONING HARNESS IS
DEFECTIVE)
AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Manual Air...
Last Modified: 9-16-2014
6.6 C
Doc ID: RM000002VXJ00XX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Manual Air Conditioning System): B1443/43; Air
Outlet Damper Control Servo Motor Circuit; 2015 MY Tundra [08/2014 - ]
DTC
B1443/43 Air Outlet Damper Control Servo Motor Circuit
DESCRIPTION
The No. 1 damper servo sub-assembly (air outlet servo motor) sends pulse signals to inform the air conditioning
HINT:
Confirm that no mechanical problem is present because this diagnostic trouble code can be output when
either a damper link or damper is mechanically locked.
DTC
CODE
DTC DETECTION CONDITION
TROUBLE AREA
B1443/43
Air outlet damper position sensor value does not change
even if air conditioning amplifier operates No. 1 damper
servo sub-assembly (air outlet servo motor)
No. 1 damper servo
sub-assembly (air outlet
servo motor)
Air conditioning harness
Air conditioning amplifier
WIRING DIAGRAM
INSPECTION PROCEDURE
AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Manual Air...
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