Toyota Tacoma (2015-2018) Service Manual: Air Outlet Damper Position Sensor Circuit (B1433/33)

Toyota Tacoma (2015-2018) Service Manual / Air Conditioning / Air Conditioning System(for Automatic Air Conditioning 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 conditioning radiator damper servo sub-assembly (for mode switching).

DTC No.	DTC Detection Condition	Trouble Area
B1433/33	Short to ground or power source circuit mode damper position sensor circuit.	No. 1 air conditioning radiator damper servo sub-assembly (for mode switching) Harness or connector Air conditioning amplifier assembly

WIRING DIAGRAM

PROCEDURE

1.	READ VALUE USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to 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%	-

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

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY

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 ).

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

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.

Standard Resistance:

Tester Connection	Condition	Specified Condition
D32-3 (S5) - A36-30 (S5-5)	Always	Below 1 Ω
D32-2 (TPM) - A35-3 (TPO)	Always	Below 1 Ω
D32-1 (SG) - A35-19 (SG-6)	Always	Below 1 Ω
D32-3 (S5) or A36-30 (S5-5) - Body ground	Always	10 kΩ or higher
D32-2 (TPM) or A35-3 (TPO) - Body ground	Always	10 kΩ or higher
D32-1 (SG) or A35-19 (SG-6) - Body ground	Always	10 kΩ or higher

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

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 p ...

Air Mix Damper Position Sensor Circuit (Driver Side) (B1436/36)

DESCRIPTION This sensor detects the position of the air mix damper (for driver side) and sends the appropriate signals to the air conditioning amplifier assembly. The position sensor is built int ...

Other materials:

A-TRAC Indicator Light does not Come ON
DESCRIPTION The A-TRAC does not operate even if the A-TRAC switch is pressed under the following conditions: The TRAC or VSC system is faulty. The temperature inside the hydraulic brake booster increases and the A-TRAC operation is suspended. WIRING DIAGRAM Refer to A-TRAC ...

Vehicle Position Mark Deviates Greatly
CAUTION / NOTICE / HINT NOTICE: If standard size tires are not installed, the vehicle position mark may deviate from the route even if the navigation system is operating normally. Make sure that standard size tires are installed to the vehicle before inspection. PROCE ...

Check Bus 2 Lines for Short Circuit
DESCRIPTION There may be a short circuit between the CAN main bus lines and/or CAN branch lines when the resistance between terminals 18 (CA4H) and 17 (CA4L) of the central gateway ECU (network gateway ECU) is below 54 Ω. Detection Item Trouble Area Resi ...