2001 INFINITI QX4 Factory Service Manual

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Page 2305 of 2395

INFINITI QX4 2001 Factory Service Manual Diagnostic ProcedureNBTF0022 1 CHECK TRANSFER MOTOR AND TRANSFER MOTOR RELAY SMT782D Refer to ªTransfer Motorº and ªTransfer Motor Relayº, ªCOMPONENT INSPECTIONº, TF-113. OK or NG OK©GO TO 3. N

Page 2306 of 2395

INFINITI QX4 2001 Factory Service Manual 4 CHECK TRANSFER MOTOR RELAY POWER SOURCE 1. Disconnect transfer motor relay harness connector. 2. Turn ignition switch to ªONº position. 3. Check voltage between transfer motor relay harness connec

Page 2307 of 2395

INFINITI QX4 2001 Factory Service Manual 5 CHECK HARNESS CONTINUITY 1. Turn ignition switch to ªOFFº position. 2. Check continuity between the following terminals. ITransfer control unit 41 and Transfer motor 14 ITransfer control unit 41 a

Page 2308 of 2395

INFINITI QX4 2001 Factory Service Manual Diagnostic ProcedureNBTF0023 1 CHECK TRANSFER FLUID TEMPERATURE SENSOR Refer to ª2-4WD Shift Solenoid Valve and Transfer Fluid Temperature Sensorº, ªCOMPONENT INSPECTIONº, TF-111. OK or NG OK©GO

Page 2309 of 2395

INFINITI QX4 2001 Factory Service Manual 4 CHECK INPUT SIGNAL SMT784D With CONSULT-II 1. Start engine. 2. Select ªECU INPUT SIGNALSº in Data Monitor. 3. Read out the value of ªFLUID TEMP SEº. Voltage: 20ÉC (68ÉF): Approx. 1.5V 80ÉC (1

Page 2310 of 2395

INFINITI QX4 2001 Factory Service Manual 5 CHECK INPUT SIGNAL Without CONSULT-II 1. Turn ignition switch to ªONº position. 2. Check voltage between transfer control unit harness connector terminals 28 and 31. Voltage: 20ÉC (68ÉF): Approx

Page 2311 of 2395

INFINITI QX4 2001 Factory Service Manual Diagnostic ProcedureNBTF0024 1 CHECK ATP SWITCH, WAIT DETECTION SWITCH AND NEUTRAL-4LO SWITCH SMT786D Refer to ªATP Switch, Neutral-4LO Switch and Wait Detection Switchº, ªCOMPONENT INSPECTIONº, T

Page 2312 of 2395

INFINITI QX4 2001 Factory Service Manual 4 CHECK INPUT SIGNAL With CONSULT-II 1. Select ªECU INPUT SIGNALSº in Data Monitor. 2. Read out the ON/OFF status of ªATP SWº, ªNEUTRAL SWº and ªWAIT DETCT SWº. SMT976D OK or NG OK©GO TO 6. N
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