Toyota Tacoma 2015-2018 Service Manual: Air Inlet Damper Position Sensor Circuit (B1432/32)

Toyota Tacoma 2015-2018 Service Manual / Air Conditioning / Air Conditioning System(for Automatic Air Conditioning System) / Air Inlet Damper Position Sensor Circuit (B1432/32)

DESCRIPTION

This sensor detects the position of the air inlet damper and sends the appropriate signals to the air conditioning amplifier assembly. The position sensor is built into the No. 1 air conditioning servo assembly (fresh/recirculation damper).

DTC No.	DTC Detection Condition	Trouble Area
B1432/32	Short to ground or power source circuit air inlet damper position sensor circuit.	No. 1 air conditioning servo assembly (fresh/recirculation damper) 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 recirculation/fresh 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 Inlet Damper Position	Air inlet damper servo motor actual position / Air inlet damper servo motor actual position / Min.: -14.0% Max.: 113.5%	FRESH: 0.0% RECIRCULATION: 100.0%	-
Air Inlet Damper Target	Air inlet damper servo motor target position / Min.: -14.0% Max.: 113.5%	FRESH: 0.0% RECIRCULATION: 100.0%	-

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

Air Inlet Damper Position

Air inlet damper servo motor actual position /

Air inlet damper servo motor actual position / Min.: -14.0%

Max.: 113.5%

FRESH: 0.0%

RECIRCULATION: 100.0%

Air Inlet Damper Target

Air inlet damper servo motor target position /

Min.: -14.0%

Max.: 113.5%

FRESH: 0.0%

RECIRCULATION: 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 SERVO ASSEMBLY (FRESH/RECIRCULATION DAMPER)

(a) Remove the No. 1 air conditioning servo assembly (fresh/recirculation damper) (See page (b) Inspect the No. 1 air conditioning servo assembly (fresh/recirculation damper) ).

(b) Inspect the No. 1 air conditioning servo assembly (fresh/recirculation damper) (See page ).

REPLACE NO. 1 AIR CONDITIONING SERVO ASSEMBLY (FRESH/RECIRCULATION DAMPER)

3.	CHECK HARNESS AND CONNECTOR (NO. 1 AIR CONDITIONING SERVO ASSEMBLY - AIR CONDITIONING AMPLIFIER ASSEMBLY)

(a) Disconnect the D29 No. 1 air conditioning servo assembly (fresh/recirculation damper) connector.

(b) Disconnect the A35 and A36 air conditioning amplifier assembly connectors.

Standard Resistance:

Tester Connection	Condition	Specified Condition
D29-1 (SG) - A36-13 (S5-2)	Always	Below 1 Ω
D29-2 (TPI) - A35-6 (TPI)	Always	Below 1 Ω
D29-3 (S5) - A35-16 (SG-3)	Always	Below 1 Ω
D29-1 (SG) or A36-13 (S5-2) - Body ground	Always	10 kΩ or higher
D29-2 (TPI) or A35-6 (TPI) - Body ground	Always	10 kΩ or higher
D29-3 (S5) or A35-16 (SG-3) - Body ground	Always	10 kΩ or higher

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

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