Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: Air Outlet Damper Control Servo Motor Circuit (B1443/43)

DESCRIPTION

This No. 1 air conditioning radiator damper servo sub-assembly (for mode switching) is controlled by the air conditioning amplifier assembly and moves the mode damper to the desired position.

DTC No.

DTC Detection Condition

Trouble Area

B1443/43

Mode damper position sensor value does not change even if air conditioning amplifier assembly operates mode damper servo motor.

  • No. 1 air conditioning radiator damper servo sub-assembly (for mode switching)
  • Harness or connector
  • Air conditioning amplifier assembly

WIRING DIAGRAM

PROCEDURE

PROCEDURE

1.

READ VALUE USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Operate the mode switch.

(e) Enter the following menus: Body Electrical / Air Conditioner / Data List.

(f) Check the value(s) by referring to the table below.

Air Conditioner

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

Air Outlet Damper Position

Mode damper servo motor actual position /

Min.: -14.0%

Max.: 113.5%

FACE: 0.0%

DEF: 100.0%

-

Air Outlet Damper Target

Mode damper servo motor target position /

Min.: -14.0%

Max.: 113.5%

FACE: 0.0%

DEF: 100.0%

-

OK:

The display is as specified in the Normal Condition column.

Result

Proceed to

NG

A

OK (When troubleshooting according to Problem Symptoms Table)

B

OK (When troubleshooting according to the DTC)

C

B

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

C

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY

A

2.

INSPECT NO. 1 AIR CONDITIONING RADIATOR DAMPER SERVO SUB-ASSEMBLY (FOR MODE SWITCHING)

(a) Remove the No. 1 air conditioning radiator damper servo sub-assembly (for mode switching) (See page (b) Inspect the No. 1 air conditioning radiator damper servo sub-assembly (for ).

(b) Inspect the No. 1 air conditioning radiator damper servo sub-assembly (for mode switching) (See page ).

NG

REPLACE NO. 1 AIR CONDITIONING RADIATOR DAMPER SERVO SUB-ASSEMBLY (FOR MODE SWITCHING)

OK

3.

CHECK HARNESS AND CONNECTOR (NO. 1 AIR CONDITIONING RADIATOR DAMPER SERVO SUB-ASSEMBLY - AIR CONDITIONING AMPLIFIER ASSEMBLY)

(a) Disconnect the D32 No. 1 air conditioning radiator damper servo sub-assembly (for mode switching) connector.

(b) Disconnect the A35 air conditioning amplifier assembly connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

D32-6 (FACE) - A35-27 (AOF)

Always

Below 1 Ω

D32-7 (DEF) - A35-28 (AOD)

Always

Below 1 Ω

D32-6 (FACE) or A35-27 (AOF)

Always

10 kΩ or higher

D32-7 (DEF) or A35-28 (AOD)

Always

10 kΩ or higher

OK

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

Lost Communication with ECM (U0100,U0142,U0155)
DESCRIPTION DTC No. DTC Detecting Condition Trouble Area U0100 No communication with ECM CAN communication system ...

Air Outlet Damper Position Sensor Circuit (B1433/33)
DESCRIPTION This sensor detects the position of the mode damper and sends the appropriate signals to the air conditioning amplifier assembly. The position sensor is built into the No. 1 air condi ...

Other materials:

Front Fog Light Circuit
DESCRIPTION The main body ECU (multiplex network body ECU) controls the front fog lights. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Inspect the fuses for circuits related to this system before performing the following inspection procedure. If the main body ECU (multiplex ...

Clutch Start Cancel Switch
Inspection INSPECTION PROCEDURE 1. INSPECT CLUTCH START CANCEL SWITCH ASSEMBLY (a) Using an ohmmeter, check that there is resistance between terminals 2 and 4. Standard: 10 kΩ or higher If the result is not as specified, replace the clutch start cancel switch. ...

Unable to Unlock Steering Wheel (Engine cannot Start)
DESCRIPTION The steering lock actuator assembly activates the steering lock motor and moves the lock bar into the steering column to lock the steering. The steering may not unlock when the lock bar gets stuck in the lock hole of the steering column. In this case, if the engine switch is turned ...

© 2011-2019 Copyright www.ttguide.net