Buick Regal: DTC B097F
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 B097F 01
Transmission Tow Mode Indicator Circuit Short to Battery
Diagnostic Fault Information
1. Tour Mode Indicator Malfunction
Circuit/System Description
The Tour Mode Switch and tour mode LED are combined into the S48E
Multifunction Switch - Center
Console. The body control module (BCM) monitors the status of the Tour Mode
Switch. When the tour
mode switch is pressed, the BCM will request the Suspension Control Module,
Transmission Control
Module (TCM) and Engine Control Module (ECM) via serial data to control the
vehicle ride
characteristic according to the selected mode. The BCM will command the tour
mode LED ON to notify
the driver of the selected mode.
Conditions for Running the DTC
The ignition is ON.
Conditions for Setting the DTC
The BCM detects a short to voltage on the indicator control circuit.
Action Taken When the DTC Sets
DTC B097F 01 is stored in the BCM memory.
Conditions for Clearing the DTC
The BCM no longer detects a malfunction.
Reference Information
Schematic Reference
Electronic Suspension Control Wiring Schematics
Connector End View Reference
COMPONENT CONNECTOR END VIEW INDEX
Description and Operation
Driver Information Center (DIC) 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
1. Observe the tour mode LED while pressing and releasing the Tour Mode
Switch. Verify the tour
mode LED turns ON and OFF.
- If LED does not turn ON and OFF
Proceed to Circuit/System Testing.
- Go to next step: If LED turns ON and OFF
2. All OK.
Circuit/System Testing
NOTE: Circuit/System Verification must be performed before proceeding
with
Circuit/System Testing.
1. Ignition OFF, disconnect the harness connector at the X3 harness connector
at the K9 Body
Control Module and the S48E Multifunction Switch - Center Console. Ignition ON.
2. Test for less than 1 V between the signal circuit terminal 14 and ground.
Repair the short to voltage in the circuit.
- Go to next step: If less than 1 V
3. Test for infinite resistance between the signal circuit terminal 14 and
ground.
- If less than infinite resistance
Repair the short to ground in the circuit.
- Go to next step: If infinite resistance
4. Test for less than 2 Ω in the signal circuit end to end.
Repair the open/high resistance in the circuit.
- Go to next step: If less than 2 Ω
5. Ignition OFF, connect the harness connector X3 at the K9 Body Control
Module. Ignition ON.
6. Test for less than 1V between the control circuit terminal 18 and ground.
- Ignition OFF, disconnect the harness connector X5 at the K9 Body Control
Module.
- Test for less than 1V between the control circuit and ground.
- If 1 V or greater, repair the short to voltage in the circuit.
- If less than 1V, replace the K9 Body Control Module.
- Go to next step: If less than 1 V
7. Verify a test lamp illuminates between the B+ circuit terminal 3 and
ground.
- If the test lamp does not illuminate and the circuit fuse is OK
- Ignition OFF.
- Test for less than 2 Ω in the B+ circuit end to end.
- If 2 Ω or greater, repair the open/high resistance in the circuit.
- If less than 2 Ω, verify the fuse is OK and there is voltage at the
fuse.
- If the test lamp does not illuminate and the circuit fuse is open
- Ignition OFF.
- Test for infinite resistance between the B+ circuit and ground.
- If less than infinite resistance, repair the short to ground on the
circuit.
- If infinite resistance, K9 Body Control Module.
- Go to next step: If the test lamp illuminates
8. Connect a test lamp between the control circuit terminal 15 and B+,
ignition ON.
9. Verify the test lamp turns ON and OFF when commanding the Tour Switch
Indicator Active and
Inactive with a scan tool.
- If the test lamp is always ON
- Ignition OFF, disconnect the X5 harness connector at the K9 Body Control
Module, ignition
ON.
- Test for infinite resistance between the control circuit and ground.
- If less than infinite resistance, repair the short to ground on the
circuit.
- If infinite resistance, replace the K9 Body Control Module
- If the test lamp is always OFF
- Ignition OFF, disconnect the X5 harness connector at the K9 Body Control
Module.
- Test for less than 2 Ω in the control circuit end to end.
- If 2 Ω or greater, repair the open/high resistance in the control
circuit.
- If less than 2 Ω, replace the K9 Body Control Module.
- Go to next step: If the test lamp turns ON and OFF
10. Test or replace the S48E Multifunction Switch - Center Console.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic
procedure.
- Displays and Gauges Component Replacement Reference
- Control Module References for control module replacement, programming,
and setup
READ NEXT:
Diagnostic Instructions
Perform the Diagnostic System Check prior to using this diagnostic
procedure:Diagnostic System
Check - Vehicle
Review the description of Strategy Based Diagnosis:Strategy
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:
ARROWS AND SYMBOLS
This service manual uses various symbols in order to describe different
service operations.
Front of Vehicle
View Detail
Ambient Air Mixed with Another Gas or Indicate Temperature Change
Motion or Direction
View Angle
Dimension (1:2)
Ambient/Clean Air Flow or Cool Air Fl
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
DT