2009 INFINITI QX56 Factory Service Manual

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Page 2225 of 4171

INFINITI QX56 2009 Factory Service Manual LIFTING POINTGI-31
< PRECAUTION >
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• When setting the lift arm, do not allow the arm to contact the brake tubes, brake cable, or fuel lines.
WAIA0029E
Revision: Decemb

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INFINITI QX56 2009 Factory Service Manual GI-32
< PRECAUTION >
TOW TRUCK TOWING
TOW TRUCK TOWING
Tow Truck TowingINFOID:0000000005867507
WARNING:
• Never get under the vehicle while it is supported only by the jack. Always use safety stands

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INFINITI QX56 2009 Factory Service Manual TOW TRUCK TOWINGGI-33
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INIFINTI recommends that towing dollies be used when towing 4WD
equipped vehicles or place the vehicle on a flat bed truck.
CAUTION

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INFINITI QX56 2009 Factory Service Manual GI-34
< BASIC INSPECTION >
SERVICE INFORMATION FOR ELECTRICAL INCIDENT
BASIC INSPECTION
SERVICE INFORMATION FOR ELECTRICAL INCIDENT
Work FlowINFOID:0000000003771212
WORK FLOW
Control Units and Electri

GI-34
< BASIC INSPECTION >
SERVICE INFORMATION FOR ELECTRICAL INCIDENT
BASIC INSPECTION
SERVICE INFORMATION FOR ELECTRICAL INCIDENT
Work FlowINFOID:0000000003771212
WORK FLOW
Control Units and Electrical PartsINFOID:0000000003771213
PRECAUTIONS
• Never reverse polarity of battery terminals.
• Install only parts specified for a vehicle.
• Before replacing the control unit, check the i nput and output and functions of the component parts.
• Do not apply excessive force when disconnecting a connector.
SGI838
STEP DESCRIPTION
STEP 1 Get detailed information about the conditions and the environment when the incident occurred.
The following are key pieces of information required to make a good analysis:
WHAT
Vehicle Model, Engine, Transmission/Transaxle and the System (i.e. Radio).
WHEN Date, Time of Day, Weather Conditions, Frequency.
WHERE Road Conditions, Altitude and Traffic Situation.
HOW System Symptoms, Operating Conditions
(Other Components Interaction).
Service History and if any After Market Accessories have been installed.
STEP 2 Operate the system, road test if necessary.
Verify the parameter of the incident.
If the problem cannot be duplicated, refer to “Incident Simulation Tests”.
STEP 3 Get the proper diagnosis materials together including:
• Power Supply Routing
• System Operation Descriptions
• Applicable Service Manual Sections
• Check for any Service Bulletins
Identify where to begin diagnosis based upon your knowledge of the system operation and the customer comments.
STEP 4 Inspect the system for mechanical binding, loose connectors or wiring damage.
Determine which circuits and components are involved and diagnose using the Power Supply Routing and Harness Lay-
outs.
STEP 5 Repair or replace the incident circuit or component.
STEP 6 Operate the system in all modes. Verify the system works properly under all conditions. Make sure you have not inad-
vertently created a new incident during your diagnosis or repair steps.
Revision: December 20092009 QX56

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INFINITI QX56 2009 Factory Service Manual SERVICE INFORMATION FOR ELECTRICAL INCIDENTGI-35
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• Do not apply excessive shock to the control unit by dropping or hit- ting it.
• Be careful t

Page 2230 of 4171

INFINITI QX56 2009 Factory Service Manual GI-36
< BASIC INSPECTION >
SERVICE INFORMATION FOR ELECTRICAL INCIDENT
HOW TO PROBE CONNECTORS
• Connector damage and an intermittent connection can result from improperly probing of the connector d

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INFINITI QX56 2009 Factory Service Manual SERVICE INFORMATION FOR ELECTRICAL INCIDENTGI-37
< BASIC INSPECTION >
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• Some connectors do not have a notch above each terminal. To probe each terminal, remove the co

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INFINITI QX56 2009 Factory Service Manual GI-38
< BASIC INSPECTION >
SERVICE INFORMATION FOR ELECTRICAL INCIDENT
4. While moving the connector, check whether the male terminalcan be easily inserted or not.
• If the male terminal can be easi

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