2011 INFINITI QX56 Factory Service Manual

ESP inoperative oil capacity jacking oil additives infotainment boot

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INFINITI QX56 2011 Factory Service Manual
SERVICE INFORMATION FOR ELECTRICAL INCIDENTGI-45
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When inspecting a ground connection follow these rules:
- Remove the ground bolt or screw.
- In

SERVICE INFORMATION FOR ELECTRICAL INCIDENTGI-45
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When inspecting a ground connection follow these rules:
- Remove the ground bolt or screw.
- Inspect all mating surfaces for tarnish, dirt, rust, etc.
- Clean as required to assure good contact.
- Reinstall bolt or screw securely.
- Inspect for “add-on” accessories which may be interfering with the ground circuit.
- If several wires are crimped into one ground eyelet terminal, check for proper crimps. Check all of the wires are clean, securely fastened and providing a good ground path. If multiple wires are cased in one eyelet
check no ground wires have excess wire insulation.
For detailed ground distribution information, re fer to “Ground Distribution” in PG section.
VOLTAGE DROP TESTS
Voltage drop tests are often used to find components or circuits which have excessive resistance. A voltage
drop in a circuit is caused by a resistance when the circuit is in operation.
Check the wire in the illustration. When measuring re sistance with DMM, contact by a single strand of wire
will give reading of 0 ohms. This would indicate a good circuit. When the circuit operates, this single strand
of wire is not able to carry the current. The single st rand will have a high resistance to the current. This will
be picked up as a slight voltage drop.
Unwanted resistance can be caused by many situations as follows:
- Undersized wiring (single strand example)
- Corrosion on switch contacts
- Loose wire connections or splices.
If repairs are needed always use wire that is of the same or larger gauge.
Measuring Voltage Drop — Accumulated Method
Connect the DMM across the connector or part of the ci rcuit you want to check. The positive lead of the
DMM should be closer to power and the negative lead closer to ground.
Operate the circuit.
The DMM will indicate how many volts are being used to “push” current through that part of the circuit.
SGI853
Revision: 2010 May2011 QX56

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INFINITI QX56 2011 Factory Service Manual
GI-46
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SERVICE INFORMATION FOR ELECTRICAL INCIDENT
Note in the illustration that there is an excessive 4.1 volt drop between the battery and the bulb.
Measuring Voltage Drop —

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SERVICE INFORMATION FOR ELECTRICAL INCIDENTGI-47
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INPUT-OUTPUT VOLTAGE CHART
The voltage value is based on the body ground.
*: If high resistan

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INFINITI QX56 2011 Factory Service Manual
GI-48
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CONSULT-III/GST CHECKING SYSTEM
CONSULT-III/GST CHECKING SYSTEM
DescriptionINFOID:0000000006280856
When CONSULT-III/GST is connected with a data link connector
(A) equipp

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INFINITI QX56 2011 Factory Service Manual
CONSULT-III/GST CHECKING SYSTEMGI-49
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x: Applicable
*1: If GST application is equipped , functions in accordance with SAE J1 979 and ISO 15031-5 ca

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CONSULT-III/GST CHECKING SYSTEM
CONSULT-III/GST Data Link Connector (DLC) Circuit
INFOID:0000000006280858
INSPECTION PROCEDURE
If the CONSULT-III/GST cannot diagnose the s

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CONSULT-III/GST CHECKING SYSTEMGI-51
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Wiring Diagram - CONSULT- III/GST CHECKING SYSTEM -INFOID:0000000006280859
WITH ICC
JCAWM0358GB
Revision: 201

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INFINITI QX56 2011 Factory Service Manual
GI-52
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CONSULT-III/GST CHECKING SYSTEM
JCAWM0359GB
Revision: 2010 May2011 QX56

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