Justin's Toyota Service

NOTE As the front air mix servomotor moves from cool side to warm side the resistance decreases

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2004 ACCESSORIES & EQUIPMENT Air Conditioning System - Diagnostics - Sequoia

Fig. 67: Moving Front Air Mix Servomotor From Cool Side To Warm Side Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: Replace front air mix servomotor. OK: Go to next step.

3. Check harness and connector between front air mix damper position sensor and integration control and panel (See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).

NG: Repair or replace harness or connector.

OK: Check and replace integration control and panel.

DTC 32: AIR INLET DAMPER POSITION SENSOR CIRCUIT

CIRCUIT DESCRIPTION

This sensor detects the position of the air inlet damper and sends the appropriate signals to the integration control and panel

The position sensor is built into the air inlet damper control servomotor assembly.

2004 ACCESSORIES & EQUIPMENT Air Conditioning System - Diagnostics - Sequoia

Fig. 68: TPI Terminal Voltage Measuring Graph Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Fig. 68: TPI Terminal Voltage Measuring Graph Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

DTC No	Detection Item	Trouble Area
32	Short to ground or power source circuit in air inlet damper position sensor circuit.	• Air inlet damper position sensor • Harness or connector between air inlet damper position sensor and integration control and panel • Integration control and panel

G0M22216

G0M22216

Fig. 69: DTC Table

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. WIRING DIAGRAM

2004 ACCESSORIES & EQUIPMENT Air Conditioning System - Diagnostics - Sequoia

Fig. 70: Wiring Diagram - Air Inlet Damper Position Sensor Circuit Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

INSPECTION PROCEDURE

1. Check voltage between terminals TP1 and SG-4 of integration control and panel. PREPARATION:

Remove integration control and panel with connectors still connected. CHECK:

a. Turn ignition switch to ON.

b. Press REC/FRS switch to change air inlet between fresh and recirculation air, and measure voltage between terminals TP1 and SG-4 of integration control and panel when the air inlet damper control servomotor operates.

2004 ACCESSORIES & EQUIPMENT Air Conditioning System - Diagnostics - Sequoia

Fig. 71: Measuring Voltage Between Terminals TPI & SG-4 Of Integration Control & Panel Connector

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

SWITCHES VOLTAGE

FRS-REC Switch	Voltage
REC	3.5 - 4.5 V
FRS	0.5-1.5V

0 0