Hombre S Regular Cab 4WD V6-4.3L (1999)
Special functions (analog outputs): This test allows for analog outputs of the BCM system to be set at a desired value.
Clear diagnostic trouble codes (DTCs): This test will erase all DTCs stored for the system currently selected. If the malfunction is still present, the DTC
may immediately reset.
Security data (content theft): This test contains information system applicable to the content theft system.
The Diagnostic Executive
The diagnostic executive is a unique segment of software that is designed in order to perform the following functions:
-
Coordinate and prioritize the diagnostic procedures
-
Define the protocol for recording and displaying the results
-
Receive the diagnostic test results and records the pass and the fail status
The following list shows the main responsibilities of the diagnostic executive:
-
Monitor the diagnostic test-enabling conditions
-
Record pending DTCs
-
Record current DTCs
-
Record history DTCs
-
Monitor and record test status information
-
Record pass and fail status of test results
A diagnostic test is a series of steps that has a beginning and an end. The result of a diagnostic test is pass or fail, which is reported to the diagnostic
executive. When a diagnostic test reports a pass result, the diagnostic executive records the following data:
The fault identified by the diagnostic test is not currently active.
When a diagnostic test reports a fail result, the diagnostic executive records the following data:
-
The fault identified by the diagnostic test is currently active.
-
The fault identified by the diagnostic test has been active since the last 100 ignition cycles or since the codes have been cleared.
-
The code supported BIT is enabled.
Diagnostic Trouble Code (DTC) Diagnosis
This information uses the following items in order to direct you in performing specific tests in order to locate and repair the problem:
-
Diagnostic tables
-
Wiring diagrams
-
Descriptive text
The diagnostic table is a step by step procedure used in order to determine the circuit or the component that is the source of the problem. The following
items are located above the diagnostic table:
-
Wiring diagrams
-
Descriptive text
-
Test conditions
-
Failure conditions
-
Actions taken when a DTC is set
When the diagnostic trouble codes (DTCs) are set, the BCM detects a malfunction in a particular circuit or other system. Other system malfunctions are
generally (but not exclusively) reported to the BCM via Class 2 data message. The BCM is programmed with routines for internal checks that the BCM
follows only under prescribed conditions (called test conditions).
When these conditions exist, the BCM inspects certain circuits or systems for a malfunction. These inspections are called failure conditions or conditions
for setting the DTC. When these conditions are true, a DTC is set. The BCM turns the SECURITY malfunction indicator lamp (MIL) to the ON position
for the Passlock (TM) system related malfunctions. Refer to the applicable DTC table for procedures and details.
See: Computers and Control Systems/Testing and Inspection/Diagnostic Trouble Code Descriptions/B Codes - Body Control Module
