Toyota Tundra (2015 year). Manual — part 2260
INSPECTION PROCEDURE
PROCEDURE
1.
READ VALUE USING TECHSTREAM (COOL AIR BYPASS SERVO MOTOR TARGET
PULSE)
(a) Use the Data List to check if the servo motor is functioning properly.
Air Conditioner
TESTER DISPLAY
MEASUREMENT ITEM / RANGE
NORMAL CONDITION
DIAGNOSTIC NOTE
Cool Air Bypass Pulse
Cool air bypass servo motor target pulse /
Min.: 0, Max.: 255
Open: 8 (pulse)
Close: 50 (pulse)
-
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
AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Automatic A...
A
NEXT
NEXT
2.
REPLACE COOL AIR BYPASS SERVO MOTOR (for Passenger Side)
(a) Temporarily replace the cool air bypass 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.
3.
CHECK FOR DTC
(a) Clear the DTC
.
(b) Check for DTC
.
OK:
DTC is not output.
NG
GO TO STEP 4
OK
END (COOL AIR BYPASS 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:
AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Automatic A...
DTC is not output.
NG
REPLACE AIR CONDITIONING AMPLIFIER
OK
END (AIR CONDITIONING HARNESS IS
DEFECTIVE)
AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Automatic A...
Last Modified: 9-16-2014
6.6 C
Doc ID: RM000002VXK00WX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Automatic Air Conditioning System): B1446/46; Air
Mix Damper Control Servo Motor Circuit (Driver Side); 2015 MY Tundra [08/2014 - ]
DTC
B1446/46 Air Mix Damper Control Servo Motor Circuit (Driver Side)
DESCRIPTION
The No. 1 damper servo sub-assembly (air mix damper servo motor [for driver side]) sends pulse signals to
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
B1446/46
Air mix damper position sensor value does not change
even if air conditioning amplifier operates No. 1 damper
servo sub-assembly (air mix damper servo motor [for
driver side])
No. 1 damper servo
sub-assembly (air mix damper
servo motor [for driver side])
Air conditioning harness
Air conditioning amplifier
WIRING DIAGRAM
AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Automatic A...
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст