2005 INFINITI QX4 Factory Service Manual

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Page 497 of 3419

INFINITI QX4 2005 Factory Service Manual ATC-102 TROUBLE DIAGNOSIS Revision: October 20052005 QX56 SYSTEM DESCRIPTION Component Parts Rear blower speed control system components are: Front air control Rear blower switch (front) Rear air c

Page 498 of 3419

INFINITI QX4 2005 Factory Service Manual TROUBLE DIAGNOSIS ATC-103 C D E F G H I K L MA B AT C Revision: October 20052005 QX56 3. CHECK REAR AIR CONTROL Refer to ATC-102, " Rear Blower Switch (Rear) Circuit" . OK or NG OK >> GO TO 4. NG >> R

Page 499 of 3419

INFINITI QX4 2005 Factory Service Manual ATC-104 TROUBLE DIAGNOSIS Revision: October 20052005 QX56 Trouble Diagnosis Procedure For Rear Blower Motor (1 - 4 Speed) SYMPTOM: Rear blower motor does not rotate when rear blower control dial (fro

Page 500 of 3419

INFINITI QX4 2005 Factory Service Manual TROUBLE DIAGNOSIS ATC-105 C D E F G H I K L MA B AT C Revision: October 20052005 QX56 1. DIAGNOSTIC PROCEDURE Blower motor rotates normally at each speed. OK or NG OK >> Inspection End. NG >> 1. Does

Page 501 of 3419

INFINITI QX4 2005 Factory Service Manual ATC-106 TROUBLE DIAGNOSIS Revision: October 20052005 QX56 6. CHECK REAR BLOWER MOTOR RELAY (COIL SIDE) POWER SUPPLY CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect fuse block (J/B) connector. 3. Tu

Page 502 of 3419

INFINITI QX4 2005 Factory Service Manual TROUBLE DIAGNOSIS ATC-107 C D E F G H I K L MA B AT C Revision: October 20052005 QX56 10. CHECK REAR BLOWER MOTOR RELAY (SWITCH SIDE) POWER SUPPLY CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect fu

Page 503 of 3419

INFINITI QX4 2005 Factory Service Manual ATC-108 TROUBLE DIAGNOSIS Revision: October 20052005 QX56 15. CHECK REAR BLOWER MOTOR GROUND CIRCUIT TO REAR BLOWER MOTOR RESISTOR 1. Turn ignition switch OFF. 2. Disconnect rear blower motor (A) and

Page 504 of 3419

INFINITI QX4 2005 Factory Service Manual TROUBLE DIAGNOSIS ATC-109 C D E F G H I K L MA B AT C Revision: October 20052005 QX56 18. CHECK REAR BLOWER SWITCH (FRONT) Refer to AT C - 11 0 , " Rear Blower Switch (Front)" . OK or NG OK >> GO TO
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