Test J: The Traction Control Indicator On The Switch Is Never Illuminated

Pinpoint Test J: The Traction Control Indicator On the Switch Is Never Illuminated

Normal Operation
The ABS module sends a reference voltage to the traction control switch along circuit 959 (GY). When the switch is pressed, the reference voltage continues through the switch to ground along circuit 57 (BK). The ABS module then disables the traction control system when it detects this change in reference voltage and sends a message to the instrument cluster along the high-speed controller area network (HS-CAN) bus to illuminate the indicator. After receiving the ABS module message, the instrument cluster sends a message to the lighting control module (LCM) over the serial communication protocol (SCP) bus to illuminate the indicator and the LCM supplies voltage to circuit 961 (WH/PK) which illuminates the indicator.

This pinpoint test is intended to diagnose the following:
^ Wiring, terminals or connectors
^ Lighting control module
^ Traction control switch

J1-J5:

J5 (Continued)-J9: