2005 INFINITI QX4 Factory Service Manual

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Page 529 of 3419

INFINITI QX4 2005 Factory Service Manual ATC-134 TROUBLE DIAGNOSIS Revision: October 20052005 QX56 DIAGNOSTIC PROCEDURE FOR WATER VALVE 1. CHECK WATER VALVE RELAY POWER INPUT CIRCUITS 1. Turn ignition switch OFF. 2. Disconnect water valve re

Page 530 of 3419

INFINITI QX4 2005 Factory Service Manual TROUBLE DIAGNOSIS ATC-135 C D E F G H I K L MA B AT C Revision: October 20052005 QX56 4. CHECK WATER VALVE RELAY Check water valve relay. Refer to ATC-136, " Wat er Va lve Relay" . OK or NG OK >> GO T

Page 531 of 3419

INFINITI QX4 2005 Factory Service Manual ATC-136 TROUBLE DIAGNOSIS Revision: October 20052005 QX56 COMPONENT INSPECTION Water Valve R elay Check continuity between terminals by supplying 12 volts and ground to coil side terminals of relay. L

Page 532 of 3419

INFINITI QX4 2005 Factory Service Manual TROUBLE DIAGNOSIS ATC-137 C D E F G H I K L MA B AT C Revision: October 20052005 QX56 Ambient Sensor CircuitEJS003Y2 COMPONENT DESCRIPTION Ambient Sensor The ambient sensor is attached on the radiator

Page 533 of 3419

INFINITI QX4 2005 Factory Service Manual ATC-138 TROUBLE DIAGNOSIS Revision: October 20052005 QX56 2. CHECK CIRCUIT CONTINUITY BETWEEN AMBIENT SENSOR AND FRONT AIR CONTROL 1. Turn ignition switch OFF. 2. Disconnect front air control connect

Page 534 of 3419

INFINITI QX4 2005 Factory Service Manual TROUBLE DIAGNOSIS ATC-139 C D E F G H I K L MA B AT C Revision: October 20052005 QX56 COMPONENT INSPECTION Ambient Sensor After disconnecting ambient sensor connector E1, measure resis- tance between

Page 535 of 3419

INFINITI QX4 2005 Factory Service Manual ATC-140 TROUBLE DIAGNOSIS Revision: October 20052005 QX56 In-vehicle Sensor CircuitEJS003Y3 COMPONENT DESCRIPTION In-vehicle Sensor The in-vehicle sensor is located on instrument lower driver panel. I

Page 536 of 3419

INFINITI QX4 2005 Factory Service Manual TROUBLE DIAGNOSIS ATC-141 C D E F G H I K L MA B AT C Revision: October 20052005 QX56 DIAGNOSTIC PROCEDURE FOR IN-VEHICLE SENSOR SYMPTOM: in-vehicle sensor circuit is open or shorted. Using the CONSUL
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