Toyota Tacoma (2015-2018) Service Manual: Air Mix Control Servo Motor
Inspection
INSPECTION
PROCEDURE
1. INSPECT AIR MIX CONTROL SERVO MOTOR (for Manual Air Conditioning System)
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(a) Inspect the servo motor operation. Text in Illustration
(1) When 12 V is applied between terminals 4 (IGN) and 1 (GND), and 0 V is applied between terminals 2 (SIG) and 1 (GND), check that the line connecting the 2 notches moves to the 0 V position. If the result is not as specified, replace the air mix control servo motor. (2) When 12 V is applied between terminals 4 (IGN) and 1 (GND), and 6 V is applied between terminals 2 (SIG) and 1 (GND), check that the line connecting the 2 notches moves to the 6 V position. If the result is not as specified, replace the air mix control servo motor. (3) When 12 V is applied between terminals 4 (IGN) and 1 (GND), and between terminals 2 (SIG) and 1 (GND), check that the line connecting the 2 notches moves to the 12 V position. If the result is not as specified, replace the air mix control servo motor. |
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2. INSPECT AIR MIX CONTROL SERVO MOTOR (for Automatic Air Conditioning System)
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(a) Inspect the servo motor operation. (1) Connect the positive (+) lead from the battery to terminal 7 (MHD) and negative (-) lead to terminals 1 (SG), then check that the shaft rotates clockwise smoothly. (2) Connect the positive (+) lead from the battery to terminal 6 (MCD) and negative (-) lead to terminal 1 (SG) then check that the shaft rotates counterclockwise smoothly. If the operations are not as specified, replace the air mix control servo motor. |
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Air Inlet Control Servo Motor
Inspection
INSPECTION
PROCEDURE
1. INSPECT AIR INLET CONTROL SERVO MOTOR
(a) Inspect the servo motor operation.
(1) Connect the positive (+) lead from the battery to terminal 1 (FR ...
Air Outlet Control Servo Motor
Inspection
INSPECTION
PROCEDURE
1. INSPECT MODE CONTROL SERVO MOTOR
(a) Inspect the servo motor operation.
(1) When 12V is applied between terminals 4 (IGN) and 1 (GND), and 0V
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Other materials:
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
If a trouble code is indicated while checking DTCs, inspect the circuit listed
for that code in the table below, and proceed to the applicable page.
Cruise Control System
DTC Code
Detection Item
MIL
See page
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System Description
SYSTEM DESCRIPTION
Text in Illustration
*a
Indication Example
*b
Tachometer
*c
Engine Coolant Temperature Receiver Gauge
*d
Speedometer
*e
Fuel Receiver Gauge
*f
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If the shift lever cannot be shifted from P (vehicles with an automatic transmission)
If the shift lever cannot be shifted with your foot on the brake, there may
be a problem with the shift lock system (a system to prevent accidental operation
of the shift lever). Have the vehicle inspected by your Toyota dealer immediately.
The following steps may be used as an emergency measur ...
