Hombre S Regular Cab 4WD V6-4.3L (1999)
Body Control Module: Diagnostic Aids
Checking Aftermarket Accessories
Important: Do not connect aftermarket accessories into the following circuits:
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SIR circuits, all such circuits are indicated on circuit diagrams with the SIR symbol. Refer to SIR Service Precautions Caution in Cautions and
Notes.
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OBDII circuits, all such circuits are indicated on circuit diagrams with the OBDII symbol.
Refer to OBD II Symbol Description Notice in Cautions and Notices.
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.
Connector Repairs
The Connector Repairs section contains the following types of connector repair information. Using these elements together will make connector repair
faster and easier:
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Connector Position Assurance Locks.
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Terminal Position Assurance Locks.
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Push to Seat Connectors.
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Repairing Damaged Wire Insulation.
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Wiring Repairs.
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Splicing Copper Wire Using Splice Clips.
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Splicing Copper Wire Using Splice Clips.
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Splicing Twisted or Shielded Cable.
Connector Position Assurance Locks
The Connector Position Assurance (CPA) is a small plastic insert that fits through the locking tabs of all the SIR system electrical connectors. The CPA
ensures that the connector halves cannot vibrate apart. You must have the CPA in place in order to ensure good contact between the SIR mating
terminals.
Terminal Position Assurance Locks
The Terminal Position Assurance (TPA) insert resembles the plastic combs used in the control module connectors. The TPA keeps the terminal securely
seated in the connector Body. Do not remove the TPA from the connector Body unless you remove a terminal for replacement.
Push to Seat Connectors
Terminal Removal
Follow the steps below in order to repair push to seat connectors.
