Non-Hybrid Less than 3900 kg (8600 lb) GVW
StabiliTrak Indicator Malfunction
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.
Diagnostic Fault Information
Circuit Description
The instrument panel cluster (IPC) illuminates the Stabilitrak indicator during the IPC bulb check or when the electronic brake control module (EBCM) detects a fault and sends a serial data message to the IPC commanding the indicator ON.
Reference Information
Schematic Reference
Antilock Brake System Schematics Less than 3900 kg (8600 lb) GVW
Connector End View Reference
Component Connector End Views Connector Views
Description and Operation
ABS Description and Operation ABS (Greater than/Equal to 3900 kg (8600 lb) GVW)
Electrical Information Reference
* Circuit Testing Circuit Testing
* Connector Repairs Connector Repairs
* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs Wiring Repairs
Scan Tool Reference
Control Module References Control Module References for scan tool information
Circuit/System Verification
1. Ignition ON.
2. Verify the scan tool BCM Traction Control Switch parameter changes between Active and Inactive while pressing and releasing the traction control switch.
• If the parameter does not change
Refer to Circuit/System Testing.
• If the parameter changes
3. Verify the traction/stability control indicator turns ON and OFF when commanding the Instrument Panel Cluster, Lamp Test ON and OFF with a scan tool.
• If the indicator does not turn ON and OFF
Replace the IPC.
• If the indicator turns ON and OFF
4. All OK.
Circuit/System Testing
1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the multifunction switch assembly-I/P. It may take up to 2 minutes for all vehicle systems to power down.
2. Test for less than 5 ohm between the ground circuit terminal 3 and ground.
• If 5 ohm or greater
1. Ignition OFF.
2. Test for less than 2 ohm in the ground circuit end to end.
• If 2 ohm or greater, repair the open/high resistance in the circuit.
• If less than 2 ohm, repair the open/high resistance in the ground connection.
• If less than 5 ohm
3. Ignition ON.
4. Verify the scan tool Traction Control Switch parameter is Inactive.
• If not Inactive
1. Ignition OFF, disconnect the X2 harness connector at the BCM.
2. Test for infinite resistance between the signal circuit and ground.
• If less than infinite resistance, repair the short to ground on the circuit.
• If infinite resistance, replace the BCM.
• If Inactive
5. Install a 3 A fused jumper wire between the signal circuit terminal 1 and the ground circuit terminal 3.
6. Verify the scan tool Traction Control Switch parameter is Active.
• If not Active
1. Ignition OFF, disconnect the X2 harness connector at the BCM, ignition ON.
2. Test for less than 1 V between the signal circuit and ground.
• If 1 V or greater, repair the short to voltage on the circuit.
• If less than 1 V
3. Test for less than 2 ohm in the signal end to end.
• If 2 ohm or greater, repair the open/high resistance in the circuit.
• If less than 2 ohm, replace the BCM.
• If Active
7. Test or replace the multifunction switch assembly-I/P.
Component Testing
1. Ignition OFF, disconnect the harness connector at the multifunction switch assembly-I/P.
2. Test for infinite resistance between the signal terminal 1 and the ground terminal 3 with the switch in the open position.
• If less than infinite resistance
Replace the multifunction switch assembly-I/P
• If infinite resistance
3. Test for less than 2 ohm between the signal terminal 1 and the ground terminal 3 with the switch in the closed position.
• If 2 ohm or greater
Replace the multifunction switch assembly-I/P
• If less than 2 ohm
4. All OK.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the repair.
* Accessory Switch Replacement (Except Cadillac) Service and RepairAccessory Switch Replacement (Cadillac) Service and Repair
* Control Module References Control Module References for BCM or IPC replacement, programming and setup