Circuit Description

The SUB-TP sensor is similar to the main TP sensor. SUB-TP sensor is used for Traction Control System (TRAC). DTC is set when ECM consistently detects less than .1 volt on VTA2 circuit and closed SUB-TP switch is off. DTC will also set if ECM detects more than 4.9 volts on circuit VTA2. Possible causes are:

• Open or short in SUB-TP sensor circuit.
• SUB-TP sensor.
• ECM.