i-350 L5-3.5L (2006)
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OBD II circuits, all such circuits are indicated on circuit diagrams with the OBD II symbol.
Always check for aftermarket accessories (non-OEM) as the first step in diagnosing electrical problems. If the vehicle is so equipped, disconnect the
system to verify that these add-on accessories are not the cause of the problems.
Possible causes of vehicle problems related to aftermarket accessories include:
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Power feeds connected to points other than the battery
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Antenna location
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Transceiver wiring located too close to vehicle electronic modules or wiring
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Poor shielding or poor connectors on antenna feed line
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Check for recent service bulletins detailing installation guidelines for aftermarket accessories.
Using Connector Test Adapters
USING CONNECTOR TEST ADAPTERS
NOTE:
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Do not insert test equipment probes (DVOM etc..) into any connector or fuse block terminal. The diameter of the test probes will deform most
terminals. A deformed terminal will cause a poor connection, which will result in a system failure. Always use the J-35616 GM-Approved
Terminal Test Kit or the J 42675 Flat-Wire Probe Adapter in order to front probe terminals. Do not use paper clips or other substitutes to probe
terminals.
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When using the J-35616 GM-Approved Terminal Test Kit, ensure the terminal test adapter choice is the correct size for the connector terminal. Do
not visually choose the terminal test adapter because some connector terminal cavities may appear larger than the actual terminal in the cavity.
Using a larger terminal test adapter will damage the terminal. Refer to the J-35616 GM-Approved Terminal Test Kit label on the inside of the
J-35616 GM-Approved Terminal Test Kit for the correct adapter along with the connector end view for terminal size.
Probing Electrical Connectors
PROBING ELECTRICAL CONNECTORS
IMPORTANT: Always be sure to reinstall the connector position assurance (CPA) and terminal position assurance (TPA) when reconnecting
connectors or replacing terminals.
Frontprobe
Disconnect the connector and probe the terminals from the mating side (front) of the connector.
NOTE:
-
Do not insert test equipment probes (DVOM etc..) into any connector or fuse block terminal. The diameter of the test probes will deform most
terminals. A deformed terminal will cause a poor connection, which will result in a system failure. Always use the J-35616 GM-Approved
Terminal Test Kit or the J 42675 Flat-Wire Probe Adapter in order to front probe terminals. Do not use paper clips or other substitutes to probe
terminals.
-
When using the J-35616 GM-Approved Terminal Test Kit, ensure the terminal test adapter choice is the correct size for the connector terminal. Do
not visually choose the terminal test adapter because some connector terminal cavities may appear larger than the actual terminal in the cavity.
Using a larger terminal test adapter will damage the terminal. Refer to the J-35616 GM-Approved Terminal Test Kit label on the inside of the
J-35616 GM-Approved Terminal Test Kit for the correct adapter along with the connector end view for terminal size.
