Chevrolet Trax: DTC B101D: Electronic control unit hardware
Diagnostic Instructions
- Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
- Review Strategy Based Diagnosis for an overview of the diagnostic
approach.
- Diagnostic Procedure Instructions provides an overview of each
diagnostic category.
DTC Descriptor
DTC B101D
Electronic Control Unit Hardware
For symptom byte information, refer to Symptom Byte List .
Circuit/System Description
The internal fault detection is handled inside the device. The symptom byte
information is for engineering
reference only. No external circuit diagnosis is involved.
Conditions for Running the DTC
- The device runs the program to detect an internal fault when power up is
commanded. The only
requirements are voltage and ground. This program runs even if the voltage
is out of the valid operating range.
- The keyless entry control module will set this DTC with symptom byte 39
when the keyless entry control
module antenna is activated.
Conditions for Setting the DTC
The device has detected an internal malfunction.
Action Taken When the DTC Sets
The device refuses all additional inputs
Conditions for Clearing the DTC
- A current DTC clears when the malfunction is no longer present.
- A history DTC clears when the device ignition cycle counter reaches the
reset threshold of 50, without a
repeat of the malfunction.
Diagnostic Aids
This DTC may be stored as a history DTC without affecting the operation of
the device.
Do not replace a device based only on DTC B101D being set in history with the
exception of the
following devices:
- K36 Inflatable Restraint Sensing and Diagnostic Module (SDM)
- K85 Passenger Presence Detection Module
If DTC B101D is set as current, replace the appropriate device.
Reference Information
Schematic Reference
- Data Communication Schematics (Encore), Data Communication Schematics (Trax)
- Control Module References
Connector End View Reference
WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS -
INDEX - ENCORE WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT
CONNECTOR END VIEWS - INDEX - TRAX
Description and Operation
Data Link Communications Description and Operation
Electrical Information Reference
- Circuit Testing
- Connector Repairs
- Testing for Intermittent Conditions and Poor Connections
- Wiring Repairs
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
- Ignition ON.
- Verify DTC B101D is not set.
- If DTC B101D is set with symptom byte 43
- Program the device that set the DTC.
- Verify the DTC does not set.
- If the DTC sets, replace the device that set the DTC.
- If the DTC does not set
- All OK.
- If DTC B101D is set with any symptom byte, except symptom byte 43
Replace the device that set the DTC.
- All OK
Repair Instructions
Perform the Diagnostic Repair Verification after completing the repair.
Control Module References for device replacement, programming and setup
READ NEXT:
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic
approach.
Diag
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic
approach.
Diag
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic
approach.
Diag
SEE MORE:
NOTE: This is GENERAL information. This article is not intended to
be specific to any
unique situation or individual vehicle configuration. For model-specific
information see appropriate articles where available.
INSPECTION
NOTE: This is GENERAL information. This article is not
intended to be spec
WARNING: The engine must be running when the transmission fluid fill
plug is
removed, or excessive fluid loss will occur. Transmission fluid may be
hot. Since the actual fluid level is unknown, stand clear when removing
the fill plug. Have a container ready to capture any lost fluid. Do not turn
th