2001 INFINITI QX4 Factory Service Manual

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Page 673 of 2395

INFINITI QX4 2001 Factory Service Manual SEF768Z TROUBLE DIAGNOSIS Ð SPECIFICATION VALUE Diagnostic Procedure (Contd) EC-138

Page 674 of 2395

INFINITI QX4 2001 Factory Service Manual SEF615Z GI MA EM LC FE AT TF PD AX SU BR ST RS BT HA SC EL IDX TROUBLE DIAGNOSIS Ð SPECIFICATION VALUE Diagnostic Procedure (Contd) EC-139

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INFINITI QX4 2001 Factory Service Manual DescriptionNBEC0045Intermittent incidents (I/I) may occur. In many cases, the problem resolves itself (the part or circuit function returns to normal without intervention). It is important to realize

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INFINITI QX4 2001 Factory Service Manual ECM Terminals and Reference ValueNBEC0648Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output

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INFINITI QX4 2001 Factory Service Manual Main Power Supply and Ground Circuit WIRING DIAGRAMNBEC0047 MEC940C TROUBLE DIAGNOSIS FOR POWER SUPPLY Main Power Supply and Ground Circuit EC-142

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INFINITI QX4 2001 Factory Service Manual MEC941C GI MA EM LC FE AT TF PD AX SU BR ST RS BT HA SC EL IDX TROUBLE DIAGNOSIS FOR POWER SUPPLY Main Power Supply and Ground Circuit (Contd) EC-143

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INFINITI QX4 2001 Factory Service Manual DIAGNOSTIC PROCEDURENBEC0049 1 INSPECTION START Start engine. Is engine running? YesorNo Ye s©GO TO 9. No©GO TO 2. 2 CHECK ECM POWER SUPPLY CIRCUIT-I 1. Turn ignition switch ªOFFº and then ªONº.

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INFINITI QX4 2001 Factory Service Manual 5 CHECK POWER SUPPLY-II 1. Disconnect ECM relay. SEF681UB 2. Check voltage between ECM relay terminals 1, 5 and ground with CONSULT-II or tester. SEF956Y OK or NG OK©GO TO 7. NG©GO TO 6. 6 DETECT MA
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