B2745

DTC B2745





Circuit Description
The traction control switch is a normally open switch that closes when the switch is activated. When activated, the switch supplies signal ground to the traction control ground signal circuit. The powertrain interface module (PIM) converts the signal ground input into serial data, which is used by the ABS-TCS electronic control unit (ECU) to enable or disable traction control, and by the instrument cluster to display traction control status.

Conditions for Running the DTC
Conditions for running the DTC are:
^ The ignition is switched ON.
^ The ignition voltage is 10 - 16 volts.

Conditions for Setting the DTC
The PIM detects the traction control switch is activated for 60 seconds or more.

Action Taken When the DTC Sets
A TRAC OFF message is displayed on the instrument cluster multi-function display.

Conditions for Clearing the DTC
Refer to Diagnostic General Descriptions for information on the conditions for clearing DTCs.

Diagnostic Aids
Refer to Cruise Control Description and Operation for cruise control switch description, operation and inspection procedures. Refer to Cruise Control Schematics, Cruise Control Component Views, and Cruise Control Connector End Views. Refer to Testing for Intermittent Conditions and Poor Connections for intermittent fault conditions.

Test Description
The numbers below refer to the step numbers on the diagnostic table.
2. This step tests the traction control switch using the scan tool.
4. This step tests the traction control switch signal circuit.
6. This step tests the PIM harness connector for serviceability.