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

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