NOTE As the temperature increases the resistance decreases

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NG: Replace front room temperature sensor.

2004 ACCESSORIES & EQUIPMENT Air Conditioning System - Diagnostics - Sequoia

OK: Go to next step.

3. Check harness and connector between front room temperature 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 12: AMBIENT TEMPERATURE SENSOR CIRCUIT

CIRCUIT DESCRIPTION

This sensor detects the ambient temperature and sends the appropriate signals to the integration control and panel.

DTC No

Detection Item

Trouble Area

12

Open or short in ambient temperature sensor circuit.

• Ambient lernp. sensor

• Harness or connector between ambient temp, sensor and integration control and panel

• Integration control and panel

G02S22176

G02S22176

Fig. 29: DTC Table

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

WIRING DIAGRAM

WIRING DIAGRAM

Fig. 30: Wiring Diagram - Ambient Temperature Sensor Circuit Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

INSPECTION PROCEDURE

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

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

a. Turn ignition switch to ON.

b. Measure voltage between terminals TAM and SG-1 of integration control and panel connector at each temperature.

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