Captiva

DTC B2745

The traction control system switch is a normally open switch that closes when the switch is activated. When activated, the switch grounds the traction control system signal circuit. The body control module (BCM) converts the signal into serial data, which is used by the electronic brake control module (EBCM) to enable/disable the traction control system.

The BCM detects the traction control system switch is activated for 60 seconds or more.

Schematic Reference

Antilock Brake System Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

ABS Description and Operation

Electrical Information Reference

Scan Tool Reference

Control Module References for scan tool information

1. Ignition ON, with a scan tool command the IPC display test ON and OFF. The Stabilitrak indicator should turn ON and OFF.

⇒	If the indicator does not turn ON and OFF, replace the P16 Instrument Cluster.

2. Observe the scan tool BCM, Traction Control Switch parameter while pressing and releasing the traction control switch. The reading should change between Active and Inactive.

1. Ignition OFF, disconnect the harness connector at the S48A Multi-Function Switch Instrument Panel or the S48D Multi-Function Switch 2 Instrument Panel.
2. Ignition OFF, test for less than 5 Ω between the ground circuit terminal listed below and ground.

•	Terminal 2 (S48D Multi-Function Switch 2 Instrument Panel)

•	Terminal 16 (S48A Multi-Function Switch Instrument Panel)

⇒	If greater than the specified range, test the ground circuit for an open/high resistance.

3. Ignition ON, verify the scan tool Traction Control Switch parameter is Inactive.

⇒	If not the specified value, test the appropriate signal circuit for a short to ground.

4. Install a 3A fused jumper wire between the appropriate signal circuit terminal and the ground circuit terminal listed below. Verify the scan tool Traction Control Switch parameter is Active.

•	Signal Terminal 1 and Ground Terminal 2 (S48D Multi-Function Switch 2 Instrument Panel)

•	Signal Terminal 5 and Ground Terminal 16 (S48A Multi-Function Switch Instrument Panel)

⇒	If not the specified value, test the signal circuit for a short to voltage or an open/high resistance.

5. If all circuits test normal, test or replace the traction control switch. If the DTC resets, replace the K9 Body Control Module (BCM).

1. Ignition OFF, disconnect the harness connector at the S48A Multi-Function Switch Instrument Panel or the S48D Multi-Function Switch 2 Instrument Panel.
2. Test for infinite resistance between the appropriate signal terminal and the ground terminal listed below with the switch in the open position.

•	Signal Terminal 1 and Ground Terminal 2 (S48D Multi-Function Switch 2 Instrument Panel)

•	Signal Terminal 5 and Ground Terminal 16 (S48A Multi-Function Switch Instrument Panel)

⇒	If not the specified value, replace the S48A Multi-Function Switch Instrument Panel or the S48D Multi-Function Switch 2 Instrument Panel.

3. Test for less than 3 Ω between the appropriate signal terminal and the ground terminal listed below with the switch in the closed position.

•	Signal Terminal 1 and Ground Terminal 2 (S48D Multi-Function Switch 2 Instrument Panel)

•	Signal Terminal 5 and Ground Terminal 16 (S48A Multi-Function Switch Instrument Panel)

⇒	If greater than the specified range, replace the S48A Multi-Function Switch Instrument Panel or the S48D Multi-Function Switch 2 Instrument Panel.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.